1 dnl Process this file with autoconf to produce a configure script.
4 dnl Developers, please strive to achieve this order:
6 dnl 0. Initialization and options processing
12 dnl 6. Compiler characteristics
13 dnl 7. Functions, global variables
14 dnl 8. System services
16 dnl Read the Autoconf manual for details.
18 m4_pattern_forbid(^PGAC_)dnl to catch undefined macros
20 AC_INIT([PostgreSQL], [12devel], [pgsql-bugs@postgresql.org])
22 m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.69], [], [m4_fatal([Autoconf version 2.69 is required.
23 Untested combinations of 'autoconf' and PostgreSQL versions are not
24 recommended. You can remove the check from 'configure.in' but it is then
25 your responsibility whether the result works or not.])])
26 AC_COPYRIGHT([Copyright (c) 1996-2018, PostgreSQL Global Development Group])
27 AC_CONFIG_SRCDIR([src/backend/access/common/heaptuple.c])
28 AC_CONFIG_AUX_DIR(config)
29 AC_PREFIX_DEFAULT(/usr/local/pgsql)
30 AC_SUBST(configure_args, [$ac_configure_args])
32 [PG_MAJORVERSION=`expr "$PACKAGE_VERSION" : '\([0-9][0-9]*\)'`]
33 AC_SUBST(PG_MAJORVERSION)
34 AC_DEFINE_UNQUOTED(PG_MAJORVERSION, "$PG_MAJORVERSION", [PostgreSQL major version as a string])
36 PGAC_ARG_REQ(with, extra-version, [STRING], [append STRING to version],
37 [PG_VERSION="$PACKAGE_VERSION$withval"],
38 [PG_VERSION="$PACKAGE_VERSION"])
39 AC_DEFINE_UNQUOTED(PG_VERSION, "$PG_VERSION", [PostgreSQL version as a string])
44 AC_MSG_CHECKING([which template to use])
46 PGAC_ARG_REQ(with, template, [NAME], [override operating system template],
49 list) echo; ls "$srcdir/src/template"; exit;;
50 *) if test -f "$srcdir/src/template/$with_template" ; then
53 AC_MSG_ERROR(['$withval' is not a valid template name. Use 'list' for a list.])
58 # --with-template not given
62 cygwin*) template=cygwin ;;
63 darwin*) template=darwin ;;
64 dragonfly*) template=netbsd ;;
65 freebsd*) template=freebsd ;;
66 hpux*) template=hpux ;;
67 linux*|gnu*|k*bsd*-gnu)
69 mingw*) template=win32 ;;
70 netbsd*) template=netbsd ;;
71 openbsd*) template=openbsd ;;
72 solaris*) template=solaris ;;
75 if test x"$template" = x"" ; then
77 *******************************************************************
78 PostgreSQL has apparently not been ported to your platform yet.
79 To try a manual configuration, look into the src/template directory
80 for a similar platform and use the '--with-template=' option.
82 Please also contact <pgsql-bugs@postgresql.org> to see about
83 rectifying this. Include the above 'checking host system type...'
85 *******************************************************************
91 AC_MSG_RESULT([$template])
96 # Initialize default assumption that we do not need separate assembly code
97 # for TAS (test-and-set). This can be overridden by the template file
105 ## Command line options
109 # Add non-standard directories to the include path
111 PGAC_ARG_REQ(with, includes, [DIRS], [look for additional header files in DIRS])
115 # Add non-standard directories to the library search path
117 PGAC_ARG_REQ(with, libraries, [DIRS], [look for additional libraries in DIRS],
118 [LIBRARY_DIRS=$withval])
120 PGAC_ARG_REQ(with, libs, [DIRS], [alternative spelling of --with-libraries],
121 [LIBRARY_DIRS=$withval])
125 # 64-bit integer date/time storage is now the only option, but to avoid
126 # unnecessary breakage of build scripts, continue to accept an explicit
127 # "--enable-integer-datetimes" switch.
129 PGAC_ARG_BOOL(enable, integer-datetimes, yes, [obsolete option, no longer supported],
131 [AC_MSG_ERROR([--disable-integer-datetimes is no longer supported])])
137 AC_MSG_CHECKING([whether NLS is wanted])
138 PGAC_ARG_OPTARG(enable, nls,
139 [LANGUAGES], [enable Native Language Support],
141 [WANTED_LANGUAGES=$enableval],
142 [AC_DEFINE(ENABLE_NLS, 1,
143 [Define to 1 if you want National Language Support. (--enable-nls)])])
144 AC_MSG_RESULT([$enable_nls])
146 AC_SUBST(WANTED_LANGUAGES)
149 # Default port number (--with-pgport), default 5432
151 AC_MSG_CHECKING([for default port number])
152 PGAC_ARG_REQ(with, pgport, [PORTNUM], [set default port number [5432]],
153 [default_port=$withval],
155 AC_MSG_RESULT([$default_port])
156 # Need both of these because some places want an integer and some a string
157 AC_DEFINE_UNQUOTED(DEF_PGPORT, ${default_port},
158 [Define to the default TCP port number on which the server listens and
159 to which clients will try to connect. This can be overridden at run-time,
160 but it's convenient if your clients have the right default compiled in.
161 (--with-pgport=PORTNUM)])
162 AC_DEFINE_UNQUOTED(DEF_PGPORT_STR, "${default_port}",
163 [Define to the default TCP port number as a string constant.])
164 AC_SUBST(default_port)
166 # It's worth validating port; you can get very confusing errors otherwise
167 if test x"$default_port" = x""; then
168 AC_MSG_ERROR([invalid --with-pgport specification: empty string])
169 elif test ! x`echo "$default_port" | sed -e 's/[[0-9]]*//'` = x""; then
170 AC_MSG_ERROR([invalid --with-pgport specification: must be a number])
171 elif test ! x`echo "$default_port" | sed -e 's/^0.//'` = x"$default_port"; then
172 AC_MSG_ERROR([invalid --with-pgport specification: must not have leading 0])
173 elif test "$default_port" -lt "1" -o "$default_port" -gt "65535"; then
174 AC_MSG_ERROR([invalid --with-pgport specification: must be between 1 and 65535])
178 # '-rpath'-like feature can be disabled
180 PGAC_ARG_BOOL(enable, rpath, yes,
181 [do not embed shared library search path in executables])
182 AC_SUBST(enable_rpath)
187 PGAC_ARG_BOOL(enable, spinlocks, yes,
188 [do not use spinlocks])
193 PGAC_ARG_BOOL(enable, atomics, yes,
194 [do not use atomic operations])
197 # Random number generation
199 PGAC_ARG_BOOL(enable, strong-random, yes,
200 [do not use a strong random number source])
201 AC_SUBST(enable_strong_random)
204 # --enable-debug adds -g to compiler flags
206 PGAC_ARG_BOOL(enable, debug, no,
207 [build with debugging symbols (-g)])
208 AC_SUBST(enable_debug)
211 # --enable-profiling enables gcc profiling
213 PGAC_ARG_BOOL(enable, profiling, no,
214 [build with profiling enabled ])
217 # --enable-coverage enables generation of code coverage metrics with gcov
219 PGAC_ARG_BOOL(enable, coverage, no,
220 [build with coverage testing instrumentation],
221 [PGAC_PATH_PROGS(GCOV, gcov)
222 if test -z "$GCOV"; then
223 AC_MSG_ERROR([gcov not found])
225 PGAC_PATH_PROGS(LCOV, lcov)
226 if test -z "$LCOV"; then
227 AC_MSG_ERROR([lcov not found])
229 PGAC_PATH_PROGS(GENHTML, genhtml)
230 if test -z "$GENHTML"; then
231 AC_MSG_ERROR([genhtml not found])
233 AC_SUBST(enable_coverage)
238 PGAC_ARG_BOOL(enable, dtrace, no,
239 [build with DTrace support],
240 [PGAC_PATH_PROGS(DTRACE, dtrace)
241 if test -z "$DTRACE"; then
242 AC_MSG_ERROR([dtrace not found])
244 AC_SUBST(DTRACEFLAGS)])
245 AC_SUBST(enable_dtrace)
250 PGAC_ARG_BOOL(enable, tap-tests, no,
251 [enable TAP tests (requires Perl and IPC::Run)])
252 AC_SUBST(enable_tap_tests)
257 AC_MSG_CHECKING([for block size])
258 PGAC_ARG_REQ(with, blocksize, [BLOCKSIZE], [set table block size in kB [8]],
259 [blocksize=$withval],
268 *) AC_MSG_ERROR([Invalid block size. Allowed values are 1,2,4,8,16,32.])
270 AC_MSG_RESULT([${blocksize}kB])
272 AC_DEFINE_UNQUOTED([BLCKSZ], ${BLCKSZ}, [
273 Size of a disk block --- this also limits the size of a tuple. You
274 can set it bigger if you need bigger tuples (although TOAST should
275 reduce the need to have large tuples, since fields can be spread
276 across multiple tuples).
278 BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ
279 is currently 2^15 (32768). This is determined by the 15-bit widths
280 of the lp_off and lp_len fields in ItemIdData (see
281 include/storage/itemid.h).
283 Changing BLCKSZ requires an initdb.
287 # Relation segment size
289 AC_MSG_CHECKING([for segment size])
290 PGAC_ARG_REQ(with, segsize, [SEGSIZE], [set table segment size in GB [1]],
293 # this expression is set up to avoid unnecessary integer overflow
294 # blocksize is already guaranteed to be a factor of 1024
295 RELSEG_SIZE=`expr '(' 1024 / ${blocksize} ')' '*' ${segsize} '*' 1024`
296 test $? -eq 0 || exit 1
297 AC_MSG_RESULT([${segsize}GB])
299 AC_DEFINE_UNQUOTED([RELSEG_SIZE], ${RELSEG_SIZE}, [
300 RELSEG_SIZE is the maximum number of blocks allowed in one disk file.
301 Thus, the maximum size of a single file is RELSEG_SIZE * BLCKSZ;
302 relations bigger than that are divided into multiple files.
304 RELSEG_SIZE * BLCKSZ must be less than your OS' limit on file size.
305 This is often 2 GB or 4GB in a 32-bit operating system, unless you
306 have large file support enabled. By default, we make the limit 1 GB
307 to avoid any possible integer-overflow problems within the OS.
308 A limit smaller than necessary only means we divide a large
309 relation into more chunks than necessary, so it seems best to err
310 in the direction of a small limit.
312 A power-of-2 value is recommended to save a few cycles in md.c,
313 but is not absolutely required.
315 Changing RELSEG_SIZE requires an initdb.
321 AC_MSG_CHECKING([for WAL block size])
322 PGAC_ARG_REQ(with, wal-blocksize, [BLOCKSIZE], [set WAL block size in kB [8]],
323 [wal_blocksize=$withval],
325 case ${wal_blocksize} in
326 1) XLOG_BLCKSZ=1024;;
327 2) XLOG_BLCKSZ=2048;;
328 4) XLOG_BLCKSZ=4096;;
329 8) XLOG_BLCKSZ=8192;;
330 16) XLOG_BLCKSZ=16384;;
331 32) XLOG_BLCKSZ=32768;;
332 64) XLOG_BLCKSZ=65536;;
333 *) AC_MSG_ERROR([Invalid WAL block size. Allowed values are 1,2,4,8,16,32,64.])
335 AC_MSG_RESULT([${wal_blocksize}kB])
337 AC_DEFINE_UNQUOTED([XLOG_BLCKSZ], ${XLOG_BLCKSZ}, [
338 Size of a WAL file block. This need have no particular relation to BLCKSZ.
339 XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,
340 XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O
341 buffers, else direct I/O may fail.
343 Changing XLOG_BLCKSZ requires an initdb.
350 # For historical reasons you can also use --with-CC to specify the C compiler
351 # to use, although the standard way to do this is to set the CC environment
353 PGAC_ARG_REQ(with, CC, [CMD], [set compiler (deprecated)], [CC=$with_CC])
356 aix) pgac_cc_list="gcc xlc"; pgac_cxx_list="g++ xlC";;
357 *) pgac_cc_list="gcc cc"; pgac_cxx_list="g++ c++";;
360 AC_PROG_CC([$pgac_cc_list])
363 # Error out if the compiler does not support C99, as the codebase
365 if test "$ac_cv_prog_cc_c99" = no; then
366 AC_MSG_ERROR([C compiler "$CC" does not support C99])
369 AC_PROG_CXX([$pgac_cxx_list])
371 # Check if it's Intel's compiler, which (usually) pretends to be gcc,
372 # but has idiosyncrasies of its own. We assume icc will define
373 # __INTEL_COMPILER regardless of CFLAGS.
374 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __INTEL_COMPILER
376 @%:@endif])], [ICC=yes], [ICC=no])
378 # Check if it's Sun Studio compiler. We assume that
379 # __SUNPRO_C will be defined for Sun Studio compilers
380 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __SUNPRO_C
382 @%:@endif])], [SUN_STUDIO_CC=yes], [SUN_STUDIO_CC=no])
384 AC_SUBST(SUN_STUDIO_CC)
390 # Checked early because subsequent tests depend on it.
391 PGAC_ARG_BOOL(with, llvm, no, [build with LLVM based JIT support],
392 [AC_DEFINE([USE_LLVM], 1, [Define to 1 to build with LLVM based JIT support. (--with-llvm)])])
394 dnl must use AS_IF here, else AC_REQUIRES inside PGAC_LLVM_SUPPORT malfunctions
395 AS_IF([test "$with_llvm" = yes], [
406 . "$srcdir/src/template/$template" || exit
408 # C[XX]FLAGS are selected so:
409 # If the user specifies something in the environment, that is used.
410 # else: If the template file set something, that is used.
411 # else: If coverage was enabled, don't set anything.
412 # else: If the compiler is GCC, then we use -O2.
413 # else: If the compiler is something else, then we use -O, unless debugging.
415 if test "$ac_env_CFLAGS_set" = set; then
416 CFLAGS=$ac_env_CFLAGS_value
417 elif test "${CFLAGS+set}" = set; then
418 : # (keep what template set)
419 elif test "$enable_coverage" = yes; then
420 : # no optimization by default
421 elif test "$GCC" = yes; then
424 # if the user selected debug mode, don't use -O
425 if test "$enable_debug" != yes; then
430 if test "$ac_env_CXXFLAGS_set" = set; then
431 CXXFLAGS=$ac_env_CXXFLAGS_value
432 elif test "${CXXFLAGS+set}" = set; then
433 : # (keep what template set)
434 elif test "$enable_coverage" = yes; then
435 : # no optimization by default
436 elif test "$GCC" = yes; then
439 # if the user selected debug mode, don't use -O
440 if test "$enable_debug" != yes; then
445 # When generating bitcode (for inlining) we always want to use -O2
446 # even when --enable-debug is specified. The bitcode it's not going to
447 # be used for line-by-line debugging, and JIT inlining doesn't work
448 # without at least -O1 (otherwise clang will emit 'noinline'
449 # attributes everywhere), which is bad for testing. Still allow the
450 # environment to override if done explicitly.
451 if test "$ac_env_BITCODE_CFLAGS_set" = set; then
452 BITCODE_CFLAGS=$ac_env_BITCODE_CFLAGS_value
454 BITCODE_CFLAGS="-O2 $BITCODE_CFLAGS"
456 if test "$ac_env_BITCODE_CXXFLAGS_set" = set; then
457 BITCODE_CXXFLAGS=$ac_env_BITCODE_CXXFLAGS_value
459 BITCODE_CXXFLAGS="-O2 $BITCODE_CXXFLAGS"
462 # C[XX]FLAGS we determined above will be added back at the end
465 user_CXXFLAGS=$CXXFLAGS
467 user_BITCODE_CFLAGS=$BITCODE_CFLAGS
469 user_BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS
472 # set CFLAGS_VECTOR from the environment, if available
473 if test "$ac_env_CFLAGS_VECTOR_set" = set; then
474 CFLAGS_VECTOR=$ac_env_CFLAGS_VECTOR_value
477 # Some versions of GCC support some additional useful warning flags.
478 # Check whether they are supported, and add them to CFLAGS if so.
479 # ICC pretends to be GCC but it's lying; it doesn't support these flags,
480 # but has its own. Also check other compiler-specific flags here.
482 if test "$GCC" = yes -a "$ICC" = no; then
483 CFLAGS="-Wall -Wmissing-prototypes -Wpointer-arith"
484 CXXFLAGS="-Wall -Wpointer-arith"
485 # These work in some but not all gcc versions
486 PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement])
487 # -Wdeclaration-after-statement isn't applicable for C++
488 # Really don't want VLAs to be used in our dialect of C
489 PGAC_PROG_CC_CFLAGS_OPT([-Werror=vla])
490 # -Wvla is not applicable for C++
491 PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels])
492 PGAC_PROG_CXX_CFLAGS_OPT([-Wendif-labels])
493 PGAC_PROG_CC_CFLAGS_OPT([-Wmissing-format-attribute])
494 PGAC_PROG_CXX_CFLAGS_OPT([-Wmissing-format-attribute])
495 # This was included in -Wall/-Wformat in older GCC versions
496 PGAC_PROG_CC_CFLAGS_OPT([-Wformat-security])
497 PGAC_PROG_CXX_CFLAGS_OPT([-Wformat-security])
498 # Disable strict-aliasing rules; needed for gcc 3.3+
499 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
500 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
501 # Disable optimizations that assume no overflow; needed for gcc 4.3+
502 PGAC_PROG_CC_CFLAGS_OPT([-fwrapv])
503 PGAC_PROG_CXX_CFLAGS_OPT([-fwrapv])
504 # Disable FP optimizations that cause various errors on gcc 4.5+ or maybe 4.6+
505 PGAC_PROG_CC_CFLAGS_OPT([-fexcess-precision=standard])
506 PGAC_PROG_CXX_CFLAGS_OPT([-fexcess-precision=standard])
507 # Optimization flags for specific files that benefit from vectorization
508 PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTOR, [-funroll-loops])
509 PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTOR, [-ftree-vectorize])
510 # We want to suppress clang's unhelpful unused-command-line-argument warnings
511 # but gcc won't complain about unrecognized -Wno-foo switches, so we have to
512 # test for the positive form and if that works, add the negative form
514 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wunused-command-line-argument])
515 if test -n "$NOT_THE_CFLAGS"; then
516 CFLAGS="$CFLAGS -Wno-unused-command-line-argument"
518 # Similarly disable useless truncation warnings from gcc 8+
520 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wformat-truncation])
521 if test -n "$NOT_THE_CFLAGS"; then
522 CFLAGS="$CFLAGS -Wno-format-truncation"
525 PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wstringop-truncation])
526 if test -n "$NOT_THE_CFLAGS"; then
527 CFLAGS="$CFLAGS -Wno-stringop-truncation"
529 elif test "$ICC" = yes; then
530 # Intel's compiler has a bug/misoptimization in checking for
531 # division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.
532 PGAC_PROG_CC_CFLAGS_OPT([-mp1])
533 PGAC_PROG_CXX_CFLAGS_OPT([-mp1])
534 # Make sure strict aliasing is off (though this is said to be the default)
535 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
536 PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])
537 elif test "$PORTNAME" = "aix"; then
538 # AIX's xlc has to have strict aliasing turned off too
539 PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])
540 PGAC_PROG_CXX_CFLAGS_OPT([-qnoansialias])
541 PGAC_PROG_CC_CFLAGS_OPT([-qlonglong])
542 PGAC_PROG_CXX_CFLAGS_OPT([-qlonglong])
543 elif test "$PORTNAME" = "hpux"; then
544 # On some versions of HP-UX, libm functions do not set errno by default.
545 # Fix that by using +Olibmerrno if the compiler recognizes it.
546 PGAC_PROG_CC_CFLAGS_OPT([+Olibmerrno])
547 PGAC_PROG_CXX_CFLAGS_OPT([+Olibmerrno])
550 AC_SUBST(CFLAGS_VECTOR, $CFLAGS_VECTOR)
552 # Determine flags used to emit bitcode for JIT inlining. Need to test
553 # for behaviour changing compiler flags, to keep compatibility with
554 # compiler used for normal postgres code.
555 if test "$with_llvm" = yes ; then
556 CLANGXX="$CLANG -xc++"
558 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fno-strict-aliasing])
559 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fno-strict-aliasing])
560 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fwrapv])
561 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fwrapv])
562 PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fexcess-precision=standard])
563 PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fexcess-precision=standard])
566 # supply -g if --enable-debug
567 if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
571 if test "$enable_debug" = yes && test "$ac_cv_prog_cxx_g" = yes; then
572 CXXFLAGS="$CXXFLAGS -g"
575 # enable code coverage if --enable-coverage
576 if test "$enable_coverage" = yes; then
577 if test "$GCC" = yes; then
578 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
579 CXXFLAGS="$CXXFLAGS -fprofile-arcs -ftest-coverage"
581 AC_MSG_ERROR([--enable-coverage is supported only when using GCC])
585 # enable profiling if --enable-profiling
586 if test "$enable_profiling" = yes && test "$ac_cv_prog_cc_g" = yes; then
587 if test "$GCC" = yes; then
588 AC_DEFINE([PROFILE_PID_DIR], 1,
589 [Define to 1 to allow profiling output to be saved separately for each process.])
590 CFLAGS="$CFLAGS -pg $PLATFORM_PROFILE_FLAGS"
591 CXXFLAGS="$CXXFLAGS -pg $PLATFORM_PROFILE_FLAGS"
593 AC_MSG_ERROR([--enable-profiling is supported only when using GCC])
597 # We already have this in Makefile.win32, but configure needs it too
598 if test "$PORTNAME" = "win32"; then
599 CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32 -DEXEC_BACKEND"
602 # Now that we're done automatically adding stuff to C[XX]FLAGS, put back the
603 # user-specified flags (if any) at the end. This lets users override
604 # the automatic additions.
605 CFLAGS="$CFLAGS $user_CFLAGS"
606 CXXFLAGS="$CXXFLAGS $user_CXXFLAGS"
607 BITCODE_CFLAGS="$BITCODE_CFLAGS $user_BITCODE_CFLAGS"
608 BITCODE_CXXFLAGS="$BITCODE_CXXFLAGS $user_BITCODE_CXXFLAGS"
610 AC_SUBST(BITCODE_CFLAGS, $BITCODE_CFLAGS)
611 AC_SUBST(BITCODE_CXXFLAGS, $BITCODE_CXXFLAGS)
613 # Check if the compiler still works with the final flag settings
614 # (note, we're not checking that for CXX, which is optional)
615 AC_MSG_CHECKING([whether the C compiler still works])
616 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
617 [AC_MSG_RESULT(yes)],
619 AC_MSG_ERROR([cannot proceed])])
621 # Defend against gcc -ffast-math
622 if test "$GCC" = yes; then
623 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifdef __FAST_MATH__
625 @%:@endif])], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
628 # Defend against clang being used on x86-32 without SSE2 enabled. As current
629 # versions of clang do not understand -fexcess-precision=standard, the use of
630 # x87 floating point operations leads to problems like isinf possibly returning
631 # false for a value that is infinite when converted from the 80bit register to
632 # the 8byte memory representation.
634 # Only perform the test if the compiler doesn't understand
635 # -fexcess-precision=standard, that way a potentially fixed compiler will work
637 if test "$pgac_cv_prog_CC_cflags__fexcess_precision_standard" = no; then
638 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
639 @%:@if defined(__clang__) && defined(__i386__) && !defined(__SSE2_MATH__)
643 [AC_MSG_ERROR([Compiling PostgreSQL with clang, on 32bit x86, requires SSE2 support. Use -msse2 or use gcc.])])
651 # Set up TAS assembly code if needed; the template file has now had its
652 # chance to request this.
654 AC_CONFIG_LINKS([src/backend/port/tas.s:src/backend/port/tas/${tas_file}])
656 if test "$need_tas" = yes ; then
665 # Automatic dependency tracking
667 PGAC_ARG_BOOL(enable, depend, no, [turn on automatic dependency tracking],
673 # Enable assert checks
675 PGAC_ARG_BOOL(enable, cassert, no, [enable assertion checks (for debugging)],
676 [AC_DEFINE([USE_ASSERT_CHECKING], 1,
677 [Define to 1 to build with assertion checks. (--enable-cassert)])])
681 # Include directories
684 IFS="${IFS}${PATH_SEPARATOR}"
685 # SRCH_INC comes from the template file
686 for dir in $with_includes $SRCH_INC; do
687 if test -d "$dir"; then
688 INCLUDES="$INCLUDES -I$dir"
690 AC_MSG_WARN([*** Include directory $dir does not exist.])
698 # Library directories
701 IFS="${IFS}${PATH_SEPARATOR}"
702 # LIBRARY_DIRS comes from command line, SRCH_LIB from template file.
703 for dir in $LIBRARY_DIRS $SRCH_LIB; do
704 if test -d "$dir"; then
705 LIBDIRS="$LIBDIRS -L$dir"
707 AC_MSG_WARN([*** Library directory $dir does not exist.])
713 # Enable thread-safe client libraries
715 AC_MSG_CHECKING([allow thread-safe client libraries])
716 PGAC_ARG_BOOL(enable, thread-safety, yes, [disable thread-safety in client libraries])
717 if test "$enable_thread_safety" = yes; then
718 AC_DEFINE([ENABLE_THREAD_SAFETY], 1,
719 [Define to 1 to build client libraries as thread-safe code. (--enable-thread-safety)])
721 AC_MSG_RESULT([$enable_thread_safety])
722 AC_SUBST(enable_thread_safety)
727 AC_MSG_CHECKING([whether to build with ICU support])
728 PGAC_ARG_BOOL(with, icu, no, [build with ICU support],
729 [AC_DEFINE([USE_ICU], 1, [Define to build with ICU support. (--with-icu)])])
730 AC_MSG_RESULT([$with_icu])
733 if test "$with_icu" = yes; then
734 PKG_CHECK_MODULES(ICU, icu-uc icu-i18n)
738 # Optionally build Tcl modules (PL/Tcl)
740 AC_MSG_CHECKING([whether to build with Tcl])
741 PGAC_ARG_BOOL(with, tcl, no, [build Tcl modules (PL/Tcl)])
742 AC_MSG_RESULT([$with_tcl])
745 # We see if the path to the Tcl/Tk configuration scripts is specified.
746 # This will override the use of tclsh to find the paths to search.
748 PGAC_ARG_REQ(with, tclconfig, [DIR], [tclConfig.sh is in DIR])
751 # Optionally build Perl modules (PL/Perl)
753 AC_MSG_CHECKING([whether to build Perl modules])
754 PGAC_ARG_BOOL(with, perl, no, [build Perl modules (PL/Perl)])
755 AC_MSG_RESULT([$with_perl])
759 # Optionally build Python modules (PL/Python)
761 AC_MSG_CHECKING([whether to build Python modules])
762 PGAC_ARG_BOOL(with, python, no, [build Python modules (PL/Python)])
763 AC_MSG_RESULT([$with_python])
764 AC_SUBST(with_python)
769 AC_MSG_CHECKING([whether to build with GSSAPI support])
770 PGAC_ARG_BOOL(with, gssapi, no, [build with GSSAPI support],
772 AC_DEFINE(ENABLE_GSS, 1, [Define to build with GSSAPI support. (--with-gssapi)])
773 krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
775 AC_MSG_RESULT([$with_gssapi])
776 AC_SUBST(with_gssapi)
783 # Kerberos configuration parameters
785 PGAC_ARG_REQ(with, krb-srvnam,
786 [NAME], [default service principal name in Kerberos (GSSAPI) [postgres]],
788 [with_krb_srvnam="postgres"])
789 AC_SUBST(with_krb_srvnam)
790 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
791 [Define to the name of the default PostgreSQL service principal in Kerberos (GSSAPI). (--with-krb-srvnam=NAME)])
797 AC_MSG_CHECKING([whether to build with PAM support])
798 PGAC_ARG_BOOL(with, pam, no,
799 [build with PAM support],
800 [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
801 AC_MSG_RESULT([$with_pam])
807 AC_MSG_CHECKING([whether to build with BSD Authentication support])
808 PGAC_ARG_BOOL(with, bsd-auth, no,
809 [build with BSD Authentication support],
810 [AC_DEFINE([USE_BSD_AUTH], 1, [Define to 1 to build with BSD Authentication support. (--with-bsd-auth)])])
811 AC_MSG_RESULT([$with_bsd_auth])
817 AC_MSG_CHECKING([whether to build with LDAP support])
818 PGAC_ARG_BOOL(with, ldap, no,
819 [build with LDAP support],
820 [AC_DEFINE([USE_LDAP], 1, [Define to 1 to build with LDAP support. (--with-ldap)])])
821 AC_MSG_RESULT([$with_ldap])
828 AC_MSG_CHECKING([whether to build with Bonjour support])
829 PGAC_ARG_BOOL(with, bonjour, no,
830 [build with Bonjour support],
831 [AC_DEFINE([USE_BONJOUR], 1, [Define to 1 to build with Bonjour support. (--with-bonjour)])])
832 AC_MSG_RESULT([$with_bonjour])
838 AC_MSG_CHECKING([whether to build with OpenSSL support])
839 PGAC_ARG_BOOL(with, openssl, no, [build with OpenSSL support],
840 [AC_DEFINE([USE_OPENSSL], 1, [Define to build with OpenSSL support. (--with-openssl)])])
841 AC_MSG_RESULT([$with_openssl])
842 AC_SUBST(with_openssl)
847 AC_MSG_CHECKING([whether to build with SELinux support])
848 PGAC_ARG_BOOL(with, selinux, no, [build with SELinux support])
849 AC_SUBST(with_selinux)
850 AC_MSG_RESULT([$with_selinux])
855 AC_MSG_CHECKING([whether to build with systemd support])
856 PGAC_ARG_BOOL(with, systemd, no, [build with systemd support],
857 [AC_DEFINE([USE_SYSTEMD], 1, [Define to build with systemd support. (--with-systemd)])])
858 AC_SUBST(with_systemd)
859 AC_MSG_RESULT([$with_systemd])
864 PGAC_ARG_BOOL(with, readline, yes,
865 [do not use GNU Readline nor BSD Libedit for editing])
866 # readline on MinGW has problems with backslashes in psql and other bugs.
867 # This is particularly a problem with non-US code pages.
868 # Therefore disable its use until we understand the cause. 2004-07-20
869 if test "$PORTNAME" = "win32"; then
870 if test "$with_readline" = yes; then
871 AC_MSG_WARN([*** Readline does not work on MinGW --- disabling])
880 PGAC_ARG_BOOL(with, libedit-preferred, no,
881 [prefer BSD Libedit over GNU Readline])
887 # There are at least three UUID libraries in common use: the FreeBSD/NetBSD
888 # library, the e2fsprogs libuuid (now part of util-linux-ng), and the OSSP
889 # UUID library. More than one of these might be present on a given platform,
890 # so we make the user say which one she wants.
892 PGAC_ARG_REQ(with, uuid, [LIB], [build contrib/uuid-ossp using LIB (bsd,e2fs,ossp)])
893 if test x"$with_uuid" = x"" ; then
896 PGAC_ARG_BOOL(with, ossp-uuid, no, [obsolete spelling of --with-uuid=ossp])
897 if test "$with_ossp_uuid" = yes ; then
901 if test "$with_uuid" = bsd ; then
902 AC_DEFINE([HAVE_UUID_BSD], 1, [Define to 1 if you have BSD UUID support.])
903 UUID_EXTRA_OBJS="md5.o sha1.o"
904 elif test "$with_uuid" = e2fs ; then
905 AC_DEFINE([HAVE_UUID_E2FS], 1, [Define to 1 if you have E2FS UUID support.])
906 UUID_EXTRA_OBJS="md5.o sha1.o"
907 elif test "$with_uuid" = ossp ; then
908 AC_DEFINE([HAVE_UUID_OSSP], 1, [Define to 1 if you have OSSP UUID support.])
910 elif test "$with_uuid" = no ; then
913 AC_MSG_ERROR([--with-uuid must specify one of bsd, e2fs, or ossp])
916 AC_SUBST(UUID_EXTRA_OBJS)
922 PGAC_ARG_BOOL(with, libxml, no, [build with XML support],
923 [AC_DEFINE([USE_LIBXML], 1, [Define to 1 to build with XML support. (--with-libxml)])])
925 if test "$with_libxml" = yes ; then
926 PGAC_PATH_PROGS(XML2_CONFIG, xml2-config)
927 if test -n "$XML2_CONFIG"; then
928 for pgac_option in `$XML2_CONFIG --cflags`; do
930 -I*|-D*) CPPFLAGS="$CPPFLAGS $pgac_option";;
933 for pgac_option in `$XML2_CONFIG --libs`; do
935 -L*) LDFLAGS="$LDFLAGS $pgac_option";;
941 AC_SUBST(with_libxml)
946 PGAC_ARG_BOOL(with, libxslt, no, [use XSLT support when building contrib/xml2],
947 [AC_DEFINE([USE_LIBXSLT], 1, [Define to 1 to use XSLT support when building contrib/xml2. (--with-libxslt)])])
950 AC_SUBST(with_libxslt)
955 PGAC_ARG_REQ(with, system-tzdata,
956 [DIR], [use system time zone data in DIR])
957 AC_SUBST(with_system_tzdata)
962 PGAC_ARG_BOOL(with, zlib, yes,
970 # Assume system is ELF if it predefines __ELF__ as 1,
971 # otherwise believe host_os based default.
973 freebsd1*|freebsd2*) elf=no;;
974 freebsd3*|freebsd4*) elf=yes;;
983 [if test "X$elf" = "Xyes" ; then
994 CPPFLAGS="$CPPFLAGS $INCLUDES"
995 LDFLAGS="$LDFLAGS $LIBDIRS"
997 AC_ARG_VAR(LDFLAGS_EX, [extra linker flags for linking executables only])
998 AC_ARG_VAR(LDFLAGS_SL, [extra linker flags for linking shared libraries only])
1002 AC_SUBST(with_gnu_ld)
1005 AC_CHECK_TOOL(AR, ar, ar)
1006 if test "$PORTNAME" = "win32"; then
1007 AC_CHECK_TOOL(DLLTOOL, dlltool, dlltool)
1008 AC_CHECK_TOOL(DLLWRAP, dllwrap, dllwrap)
1009 AC_CHECK_TOOL(WINDRES, windres, windres)
1013 # When Autoconf chooses install-sh as install program it tries to generate
1014 # a relative path to it in each makefile where it substitutes it. This clashes
1015 # with our Makefile.global concept. This workaround helps.
1017 *install-sh*) install_bin='';;
1018 *) install_bin=$INSTALL;;
1020 AC_SUBST(install_bin)
1022 PGAC_PATH_PROGS(TAR, tar)
1025 # When Autoconf chooses install-sh as mkdir -p program it tries to generate
1026 # a relative path to it in each makefile where it substitutes it. This clashes
1027 # with our Makefile.global concept. This workaround helps.
1029 *install-sh*) MKDIR_P='\${SHELL} \${top_srcdir}/config/install-sh -c -d';;
1036 if test "$with_perl" = yes; then
1037 if test -z "$PERL"; then
1038 AC_MSG_ERROR([Perl not found])
1040 PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
1041 if test "$perl_useshrplib" != yes && test "$perl_useshrplib" != true; then
1042 AC_MSG_ERROR([cannot build PL/Perl because libperl is not a shared library
1043 You might have to rebuild your Perl installation. Refer to the
1044 documentation for details. Use --without-perl to disable building
1047 # On most platforms, archlibexp is also where the Perl include files live ...
1048 perl_includespec="-I$perl_archlibexp/CORE"
1049 # ... but on newer macOS versions, we must use -iwithsysroot to look
1051 if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
1052 if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
1053 perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
1056 AC_SUBST(perl_includespec)dnl
1057 PGAC_CHECK_PERL_EMBED_CCFLAGS
1058 PGAC_CHECK_PERL_EMBED_LDFLAGS
1061 if test "$with_python" = yes; then
1063 PGAC_CHECK_PYTHON_EMBED_SETUP
1066 if test "$cross_compiling" = yes && test -z "$with_system_tzdata"; then
1067 PGAC_PATH_PROGS(ZIC, zic)
1068 if test -z "$ZIC"; then
1070 When cross-compiling, either use the option --with-system-tzdata to use
1071 existing time-zone data, or set the environment variable ZIC to a zic
1072 program to use during the build.])
1079 # For each platform, we need to know about any special compile and link
1080 # libraries, and whether the normal C function names are thread-safe.
1081 # See the comment at the top of src/port/thread.c for more information.
1082 # WIN32 doesn't need the pthread tests; it always uses threads
1084 # These tests are run before the library-tests, because linking with the
1085 # other libraries can pull in the pthread functions as a side-effect. We
1086 # want to use the -pthread or similar flags directly, and not rely on
1087 # the side-effects of linking with some other library.
1089 # note: We have to use AS_IF here rather than plain if. The AC_CHECK_HEADER
1090 # invocation below is the first one in the script, and autoconf generates
1091 # additional code for that, which must not be inside the if-block. AS_IF
1092 # knows how to do that.
1093 AS_IF([test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"],
1095 AX_PTHREAD # set thread flags
1097 # Some platforms use these, so just define them. They can't hurt if they
1098 # are not supported. For example, on Solaris -D_POSIX_PTHREAD_SEMANTICS
1099 # enables 5-arg getpwuid_r, among other things.
1100 PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE -D_POSIX_PTHREAD_SEMANTICS"
1102 # Check for *_r functions
1105 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
1106 LIBS="$LIBS $PTHREAD_LIBS"
1108 AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
1109 pthread.h not found; use --disable-thread-safety to disable thread safety])])
1111 AC_CHECK_FUNCS([strerror_r getpwuid_r gethostbyname_r])
1113 # Do test here with the proper thread flags
1114 PGAC_FUNC_STRERROR_R_INT
1120 # do not use values from template file
1125 AC_SUBST(PTHREAD_CFLAGS)
1126 AC_SUBST(PTHREAD_LIBS)
1132 ## Most libraries are included only if they demonstrably provide a function
1133 ## we need, but libm is an exception: always include it, because there are
1134 ## too many compilers that play cute optimization games that will break
1135 ## probes for standard functions such as pow().
1138 AC_CHECK_LIB(m, main)
1139 AC_SEARCH_LIBS(setproctitle, util)
1140 AC_SEARCH_LIBS(dlopen, dl)
1141 AC_SEARCH_LIBS(socket, [socket ws2_32])
1142 AC_SEARCH_LIBS(shl_load, dld)
1143 AC_SEARCH_LIBS(getopt_long, [getopt gnugetopt])
1144 AC_SEARCH_LIBS(crypt, crypt)
1145 AC_SEARCH_LIBS(shm_open, rt)
1146 AC_SEARCH_LIBS(shm_unlink, rt)
1147 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1149 AC_SEARCH_LIBS(fdatasync, [rt posix4])
1150 # Required for thread_test.c on Solaris
1151 AC_SEARCH_LIBS(sched_yield, rt)
1152 # Required for thread_test.c on Solaris 2.5:
1153 # Other ports use it too (HP-UX) so test unconditionally
1154 AC_SEARCH_LIBS(gethostbyname_r, nsl)
1156 AC_SEARCH_LIBS(shmget, cygipc)
1158 if test "$with_readline" = yes; then
1160 if test x"$pgac_cv_check_readline" = x"no"; then
1161 AC_MSG_ERROR([readline library not found
1162 If you have readline already installed, see config.log for details on the
1163 failure. It is possible the compiler isn't looking in the proper directory.
1164 Use --without-readline to disable readline support.])
1168 if test "$with_zlib" = yes; then
1169 AC_CHECK_LIB(z, inflate, [],
1170 [AC_MSG_ERROR([zlib library not found
1171 If you have zlib already installed, see config.log for details on the
1172 failure. It is possible the compiler isn't looking in the proper directory.
1173 Use --without-zlib to disable zlib support.])])
1176 if test "$enable_spinlocks" = yes; then
1177 AC_DEFINE(HAVE_SPINLOCKS, 1, [Define to 1 if you have spinlocks.])
1180 *** Not using spinlocks will cause poor performance.])
1183 if test "$enable_atomics" = yes; then
1184 AC_DEFINE(HAVE_ATOMICS, 1, [Define to 1 if you want to use atomics if available.])
1187 *** Not using atomic operations will cause poor performance.])
1190 if test "$with_gssapi" = yes ; then
1191 if test "$PORTNAME" != "win32"; then
1192 AC_SEARCH_LIBS(gss_init_sec_context, [gssapi_krb5 gss 'gssapi -lkrb5 -lcrypto'], [],
1193 [AC_MSG_ERROR([could not find function 'gss_init_sec_context' required for GSSAPI])])
1195 LIBS="$LIBS -lgssapi32"
1199 if test "$with_openssl" = yes ; then
1201 if test "$PORTNAME" != "win32"; then
1202 AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
1203 AC_CHECK_LIB(ssl, SSL_new, [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
1205 AC_SEARCH_LIBS(CRYPTO_new_ex_data, [eay32 crypto], [], [AC_MSG_ERROR([library 'eay32' or 'crypto' is required for OpenSSL])])
1206 AC_SEARCH_LIBS(SSL_new, [ssleay32 ssl], [], [AC_MSG_ERROR([library 'ssleay32' or 'ssl' is required for OpenSSL])])
1208 AC_CHECK_FUNCS([SSL_clear_options SSL_get_current_compression X509_get_signature_nid])
1209 # Functions introduced in OpenSSL 1.1.0. We used to check for
1210 # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
1211 # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
1212 # doesn't have these OpenSSL 1.1.0 functions. So check for individual
1214 AC_CHECK_FUNCS([OPENSSL_init_ssl BIO_get_data BIO_meth_new ASN1_STRING_get0_data RAND_OpenSSL])
1215 # OpenSSL versions before 1.1.0 required setting callback functions, for
1216 # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
1217 # function was removed.
1218 AC_CHECK_FUNCS([CRYPTO_lock])
1221 if test "$with_pam" = yes ; then
1222 AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
1225 if test "$with_libxml" = yes ; then
1226 AC_CHECK_LIB(xml2, xmlSaveToBuffer, [], [AC_MSG_ERROR([library 'xml2' (version >= 2.6.23) is required for XML support])])
1229 if test "$with_libxslt" = yes ; then
1230 AC_CHECK_LIB(xslt, xsltCleanupGlobals, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
1233 # Note: We can test for libldap_r only after we know PTHREAD_LIBS
1234 if test "$with_ldap" = yes ; then
1236 if test "$PORTNAME" != "win32"; then
1237 AC_CHECK_LIB(ldap, ldap_bind, [],
1238 [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
1240 LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
1241 if test "$enable_thread_safety" = yes; then
1242 # on some platforms ldap_r fails to link without PTHREAD_LIBS
1243 AC_CHECK_LIB(ldap_r, ldap_simple_bind, [],
1244 [AC_MSG_ERROR([library 'ldap_r' is required for LDAP])],
1245 [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
1246 LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"
1248 LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
1250 AC_CHECK_FUNCS([ldap_initialize])
1252 AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
1253 LDAP_LIBS_FE="-lwldap32"
1254 LDAP_LIBS_BE="-lwldap32"
1258 AC_SUBST(LDAP_LIBS_FE)
1259 AC_SUBST(LDAP_LIBS_BE)
1261 # for contrib/sepgsql
1262 if test "$with_selinux" = yes; then
1263 AC_CHECK_LIB(selinux, security_compute_create_name, [],
1264 [AC_MSG_ERROR([library 'libselinux', version 2.1.10 or newer, is required for SELinux support])])
1267 # for contrib/uuid-ossp
1268 if test "$with_uuid" = bsd ; then
1269 # On BSD, the UUID functions are in libc
1270 AC_CHECK_FUNC(uuid_to_string,
1272 [AC_MSG_ERROR([BSD UUID functions are not present])])
1273 elif test "$with_uuid" = e2fs ; then
1274 # On macOS, the UUID functions are in libc
1275 AC_CHECK_FUNC(uuid_generate,
1277 [AC_CHECK_LIB(uuid, uuid_generate,
1278 [UUID_LIBS="-luuid"],
1279 [AC_MSG_ERROR([library 'uuid' is required for E2FS UUID])])])
1280 elif test "$with_uuid" = ossp ; then
1281 AC_CHECK_LIB(ossp-uuid, uuid_export,
1282 [UUID_LIBS="-lossp-uuid"],
1283 [AC_CHECK_LIB(uuid, uuid_export,
1284 [UUID_LIBS="-luuid"],
1285 [AC_MSG_ERROR([library 'ossp-uuid' or 'uuid' is required for OSSP UUID])])])
1296 AC_CHECK_HEADERS(m4_normalize([
1326 # On BSD, test for net/if.h will fail unless sys/socket.h
1327 # is included first.
1328 AC_CHECK_HEADERS(net/if.h, [], [],
1329 [AC_INCLUDES_DEFAULT
1330 #include <sys/socket.h>
1333 # On OpenBSD, test for sys/ucred.h will fail unless sys/param.h
1334 # is included first.
1335 AC_CHECK_HEADERS(sys/ucred.h, [], [],
1336 [AC_INCLUDES_DEFAULT
1337 #include <sys/param.h>
1340 # At least on IRIX, test for netinet/tcp.h will fail unless
1341 # netinet/in.h is included first.
1342 AC_CHECK_HEADERS(netinet/tcp.h, [], [],
1343 [AC_INCLUDES_DEFAULT
1344 #include <netinet/in.h>
1347 if expr x"$pgac_cv_check_readline" : 'x-lreadline' >/dev/null ; then
1348 AC_CHECK_HEADERS(readline/readline.h, [],
1349 [AC_CHECK_HEADERS(readline.h, [],
1350 [AC_MSG_ERROR([readline header not found
1351 If you have readline already installed, see config.log for details on the
1352 failure. It is possible the compiler isn't looking in the proper directory.
1353 Use --without-readline to disable readline support.])])])
1354 AC_CHECK_HEADERS(readline/history.h, [],
1355 [AC_CHECK_HEADERS(history.h, [],
1356 [AC_MSG_ERROR([history header not found
1357 If you have readline already installed, see config.log for details on the
1358 failure. It is possible the compiler isn't looking in the proper directory.
1359 Use --without-readline to disable readline support.])])])
1362 if expr x"$pgac_cv_check_readline" : 'x-ledit' >/dev/null ; then
1363 # Some installations of libedit usurp /usr/include/readline/, which seems
1364 # bad practice, since in combined installations readline will have its headers
1365 # there. We might have to resort to AC_EGREP checks to make sure we found
1366 # the proper header...
1367 AC_CHECK_HEADERS(editline/readline.h, [],
1368 [AC_CHECK_HEADERS(readline.h, [],
1369 [AC_CHECK_HEADERS(readline/readline.h, [],
1370 [AC_MSG_ERROR([readline header not found
1371 If you have libedit already installed, see config.log for details on the
1372 failure. It is possible the compiler isn't looking in the proper directory.
1373 Use --without-readline to disable libedit support.])])])])
1374 # Note: in a libedit installation, history.h is sometimes a dummy, and may
1375 # not be there at all. Hence, don't complain if not found. We must check
1376 # though, since in yet other versions it is an independent header.
1377 AC_CHECK_HEADERS(editline/history.h, [],
1378 [AC_CHECK_HEADERS(history.h, [],
1379 [AC_CHECK_HEADERS(readline/history.h)])])
1382 if test "$with_zlib" = yes; then
1383 AC_CHECK_HEADER(zlib.h, [], [AC_MSG_ERROR([zlib header not found
1384 If you have zlib already installed, see config.log for details on the
1385 failure. It is possible the compiler isn't looking in the proper directory.
1386 Use --without-zlib to disable zlib support.])])
1389 if test "$with_gssapi" = yes ; then
1390 AC_CHECK_HEADERS(gssapi/gssapi.h, [],
1391 [AC_CHECK_HEADERS(gssapi.h, [], [AC_MSG_ERROR([gssapi.h header file is required for GSSAPI])])])
1394 if test "$with_openssl" = yes ; then
1395 AC_CHECK_HEADER(openssl/ssl.h, [], [AC_MSG_ERROR([header file <openssl/ssl.h> is required for OpenSSL])])
1396 AC_CHECK_HEADER(openssl/err.h, [], [AC_MSG_ERROR([header file <openssl/err.h> is required for OpenSSL])])
1399 if test "$with_pam" = yes ; then
1400 AC_CHECK_HEADERS(security/pam_appl.h, [],
1401 [AC_CHECK_HEADERS(pam/pam_appl.h, [],
1402 [AC_MSG_ERROR([header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.])])])
1405 if test "$with_bsd_auth" = yes ; then
1406 AC_CHECK_HEADER(bsd_auth.h, [], [AC_MSG_ERROR([header file <bsd_auth.h> is required for BSD Authentication support])])
1409 if test "$with_systemd" = yes ; then
1410 AC_CHECK_HEADER(systemd/sd-daemon.h, [], [AC_MSG_ERROR([header file <systemd/sd-daemon.h> is required for systemd support])])
1413 if test "$with_libxml" = yes ; then
1414 AC_CHECK_HEADER(libxml/parser.h, [], [AC_MSG_ERROR([header file <libxml/parser.h> is required for XML support])])
1417 if test "$with_libxslt" = yes ; then
1418 AC_CHECK_HEADER(libxslt/xslt.h, [], [AC_MSG_ERROR([header file <libxslt/xslt.h> is required for XSLT support])])
1421 if test "$with_ldap" = yes ; then
1422 if test "$PORTNAME" != "win32"; then
1423 AC_CHECK_HEADERS(ldap.h, [],
1424 [AC_MSG_ERROR([header file <ldap.h> is required for LDAP])])
1427 AC_CHECK_HEADERS(winldap.h, [],
1428 [AC_MSG_ERROR([header file <winldap.h> is required for LDAP])],
1429 [AC_INCLUDES_DEFAULT
1430 #include <windows.h>
1435 if test "$with_bonjour" = yes ; then
1436 AC_CHECK_HEADER(dns_sd.h, [], [AC_MSG_ERROR([header file <dns_sd.h> is required for Bonjour])])
1437 dnl At some point we might add something like
1438 dnl AC_SEARCH_LIBS(DNSServiceRegister, dns_sd)
1439 dnl but right now, what that would mainly accomplish is to encourage
1440 dnl people to try to use the avahi implementation, which does not work.
1441 dnl If you want to use Apple's own Bonjour code on another platform,
1442 dnl just add -ldns_sd to LIBS manually.
1445 # for contrib/uuid-ossp
1446 if test "$with_uuid" = bsd ; then
1447 AC_CHECK_HEADERS(uuid.h,
1448 [AC_EGREP_HEADER([uuid_to_string], uuid.h, [],
1449 [AC_MSG_ERROR([header file <uuid.h> does not match BSD UUID library])])],
1450 [AC_MSG_ERROR([header file <uuid.h> is required for BSD UUID])])
1451 elif test "$with_uuid" = e2fs ; then
1452 AC_CHECK_HEADERS(uuid/uuid.h,
1453 [AC_EGREP_HEADER([uuid_generate], uuid/uuid.h, [],
1454 [AC_MSG_ERROR([header file <uuid/uuid.h> does not match E2FS UUID library])])],
1455 [AC_CHECK_HEADERS(uuid.h,
1456 [AC_EGREP_HEADER([uuid_generate], uuid.h, [],
1457 [AC_MSG_ERROR([header file <uuid.h> does not match E2FS UUID library])])],
1458 [AC_MSG_ERROR([header file <uuid/uuid.h> or <uuid.h> is required for E2FS UUID])])])
1459 elif test "$with_uuid" = ossp ; then
1460 AC_CHECK_HEADERS(ossp/uuid.h,
1461 [AC_EGREP_HEADER([uuid_export], ossp/uuid.h, [],
1462 [AC_MSG_ERROR([header file <ossp/uuid.h> does not match OSSP UUID library])])],
1463 [AC_CHECK_HEADERS(uuid.h,
1464 [AC_EGREP_HEADER([uuid_export], uuid.h, [],
1465 [AC_MSG_ERROR([header file <uuid.h> does not match OSSP UUID library])])],
1466 [AC_MSG_ERROR([header file <ossp/uuid.h> or <uuid.h> is required for OSSP UUID])])])
1469 if test "$PORTNAME" = "win32" ; then
1470 AC_CHECK_HEADERS(crtdefs.h)
1474 ## Types, structures, compiler characteristics
1477 m4_defun([AC_PROG_CC_STDC], []) dnl We don't want that.
1480 PGAC_PRINTF_ARCHETYPE
1481 AC_C_FLEXIBLE_ARRAY_MEMBER
1483 PGAC_C_FUNCNAME_SUPPORT
1484 PGAC_C_STATIC_ASSERT
1486 PGAC_C_TYPES_COMPATIBLE
1487 PGAC_C_BUILTIN_BSWAP16
1488 PGAC_C_BUILTIN_BSWAP32
1489 PGAC_C_BUILTIN_BSWAP64
1490 PGAC_C_BUILTIN_CONSTANT_P
1491 PGAC_C_BUILTIN_UNREACHABLE
1492 PGAC_C_COMPUTED_GOTO
1493 PGAC_STRUCT_TIMEZONE
1495 PGAC_STRUCT_SOCKADDR_UN
1496 PGAC_STRUCT_SOCKADDR_STORAGE
1497 PGAC_STRUCT_SOCKADDR_STORAGE_MEMBERS
1498 PGAC_STRUCT_ADDRINFO
1501 AC_TYPE_LONG_LONG_INT
1505 # MSVC doesn't cope well with defining restrict to __restrict, the
1506 # spelling it understands, because it conflicts with
1507 # __declspec(restrict). Therefore we define pg_restrict to the
1508 # appropriate definition, which presumably won't conflict.
1510 # Allow platforms with buggy compilers to force restrict to not be
1511 # used by setting $FORCE_DISABLE_RESTRICT=yes in the relevant
1514 if test "$ac_cv_c_restrict" = "no" -o "x$FORCE_DISABLE_RESTRICT" = "xyes"; then
1517 pg_restrict="$ac_cv_c_restrict"
1519 AC_DEFINE_UNQUOTED([pg_restrict], [$pg_restrict],
1520 [Define to keyword to use for C99 restrict support, or to nothing if not
1523 AC_CHECK_TYPES([struct cmsgcred], [], [],
1524 [#include <sys/socket.h>
1525 #include <sys/param.h>
1526 #ifdef HAVE_SYS_UCRED_H
1527 #include <sys/ucred.h>
1530 AC_CHECK_TYPES([struct option], [], [],
1531 [#ifdef HAVE_GETOPT_H
1535 if test "$with_zlib" = yes; then
1536 # Check that <zlib.h> defines z_streamp (versions before about 1.0.4
1537 # did not). While we could work around the lack of z_streamp, it
1538 # seems unwise to encourage people to use such old zlib versions...
1539 AC_CHECK_TYPE(z_streamp, [], [AC_MSG_ERROR([zlib version is too old
1540 Use --without-zlib to disable zlib support.])],
1541 [#include <zlib.h>])
1544 # On PPC, check if assembler supports LWARX instruction's mutex hint bit
1547 AC_MSG_CHECKING([whether assembler supports lwarx hint bit])
1548 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
1549 [int a = 0; int *p = &a; int r;
1550 __asm__ __volatile__ (" lwarx %0,0,%1,1\n" : "=&r"(r) : "r"(p));])],
1551 [pgac_cv_have_ppc_mutex_hint=yes],
1552 [pgac_cv_have_ppc_mutex_hint=no])
1553 AC_MSG_RESULT([$pgac_cv_have_ppc_mutex_hint])
1554 if test x"$pgac_cv_have_ppc_mutex_hint" = xyes ; then
1555 AC_DEFINE(HAVE_PPC_LWARX_MUTEX_HINT, 1, [Define to 1 if the assembler supports PPC's LWARX mutex hint bit.])
1560 # Check largefile support. You might think this is a system service not a
1561 # compiler characteristic, but you'd be wrong. We must check this before
1562 # probing existence of related functions such as fseeko, since the largefile
1563 # defines can affect what is generated for that.
1564 if test "$PORTNAME" != "win32"; then
1566 dnl Autoconf 2.69's AC_SYS_LARGEFILE believes it's a good idea to #define
1567 dnl _DARWIN_USE_64_BIT_INODE, but it isn't: on macOS 10.5 that activates a
1568 dnl bug that causes readdir() to sometimes return EINVAL. On later macOS
1569 dnl versions where the feature actually works, it's on by default anyway.
1570 AH_VERBATIM([_DARWIN_USE_64_BIT_INODE],[])
1573 # Check for largefile support (must be after AC_SYS_LARGEFILE)
1574 AC_CHECK_SIZEOF([off_t])
1576 # If we don't have largefile support, can't handle segsize >= 2GB.
1577 if test "$ac_cv_sizeof_off_t" -lt 8 -a "$segsize" != "1"; then
1578 AC_MSG_ERROR([Large file support is not enabled. Segment size cannot be larger than 1GB.])
1581 AC_CHECK_SIZEOF([bool], [],
1582 [#ifdef HAVE_STDBOOL_H
1583 #include <stdbool.h>
1588 ## Functions, global variables
1591 PGAC_VAR_INT_TIMEZONE
1592 AC_FUNC_ACCEPT_ARGTYPES
1593 PGAC_FUNC_GETTIMEOFDAY_1ARG
1594 PGAC_FUNC_WCSTOMBS_L
1596 # Some versions of libedit contain strlcpy(), setproctitle(), and other
1597 # symbols that that library has no business exposing to the world. Pending
1598 # acquisition of a clue by those developers, ignore libedit (including its
1599 # possible alias of libreadline) while checking for everything else.
1600 LIBS_including_readline="$LIBS"
1601 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
1603 AC_CHECK_FUNCS(m4_normalize([
1617 pthread_is_threaded_np
1632 AC_REPLACE_FUNCS(fseeko)
1634 # NetBSD uses a custom fseeko/ftello built on fsetpos/fgetpos
1635 # Mingw uses macros to access Win32 API calls
1637 AC_DEFINE(HAVE_FSEEKO, 1, [Define to 1 because replacement version used.])
1638 ac_cv_func_fseeko=yes;;
1643 # posix_fadvise() is a no-op on Solaris, so don't incur function overhead
1644 # by calling it, 2009-04-02
1645 # http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
1646 dnl must use AS_IF here, else AC_REQUIRES inside AC_CHECK_DECLS malfunctions
1647 AS_IF([test "$PORTNAME" != "solaris"], [
1648 AC_CHECK_FUNCS(posix_fadvise)
1649 AC_CHECK_DECLS(posix_fadvise, [], [], [#include <fcntl.h>])
1652 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
1653 AC_CHECK_DECLS([strlcat, strlcpy, strnlen])
1654 # This is probably only present on macOS, but may as well check always
1655 AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
1657 AC_CHECK_DECLS([RTLD_GLOBAL, RTLD_NOW], [], [], [#include <dlfcn.h>])
1659 AC_CHECK_TYPE([struct sockaddr_in6],
1660 [AC_DEFINE(HAVE_IPV6, 1, [Define to 1 if you have support for IPv6.])],
1662 [$ac_includes_default
1663 #include <netinet/in.h>])
1665 AC_CACHE_CHECK([for PS_STRINGS], [pgac_cv_var_PS_STRINGS],
1666 [AC_LINK_IFELSE([AC_LANG_PROGRAM(
1667 [#include <machine/vmparam.h>
1668 #include <sys/exec.h>
1670 [PS_STRINGS->ps_nargvstr = 1;
1671 PS_STRINGS->ps_argvstr = "foo";])],
1672 [pgac_cv_var_PS_STRINGS=yes],
1673 [pgac_cv_var_PS_STRINGS=no])])
1674 if test "$pgac_cv_var_PS_STRINGS" = yes ; then
1675 AC_DEFINE([HAVE_PS_STRINGS], 1, [Define to 1 if the PS_STRINGS thing exists.])
1679 dnl Cannot use AC_CHECK_FUNC because isinf may be a macro
1680 AC_CACHE_CHECK([for isinf], ac_cv_func_isinf,
1681 [AC_LINK_IFELSE([AC_LANG_PROGRAM([
1685 [return isinf(glob_double) ? 0 : 1;])],
1686 [ac_cv_func_isinf=yes],
1687 [ac_cv_func_isinf=no])])
1689 if test $ac_cv_func_isinf = yes ; then
1690 AC_DEFINE(HAVE_ISINF, 1, [Define to 1 if you have isinf().])
1693 # Look for a way to implement a substitute for isinf()
1694 AC_CHECK_FUNCS([fpclass fp_class fp_class_d class], [break])
1697 AC_REPLACE_FUNCS(m4_normalize([
1717 # Windows uses a specialised env handler
1718 # and doesn't need a replacement getpeereid because it doesn't use
1721 AC_DEFINE(HAVE_UNSETENV, 1, [Define to 1 because replacement version used.])
1722 AC_DEFINE(HAVE_GETPEEREID, 1, [Define to 1 because function not required.])
1723 ac_cv_func_unsetenv=yes
1724 ac_cv_func_getpeereid=yes;;
1726 AC_REPLACE_FUNCS([unsetenv getpeereid])
1730 # System's version of getaddrinfo(), if any, may be used only if we found
1731 # a definition for struct addrinfo; see notes in src/include/getaddrinfo.h.
1732 # We use only our own getaddrinfo.c on Windows, but it's time to revisit that.
1733 if test x"$ac_cv_type_struct_addrinfo" = xyes && \
1734 test "$PORTNAME" != "win32"; then
1735 AC_REPLACE_FUNCS([getaddrinfo])
1737 AC_LIBOBJ(getaddrinfo)
1740 # Similarly, use system's getopt_long() only if system provides struct option.
1741 if test x"$ac_cv_type_struct_option" = xyes ; then
1742 AC_REPLACE_FUNCS([getopt_long])
1744 AC_LIBOBJ(getopt_long)
1747 # Solaris' getopt() doesn't do what we want for long options, so always use
1748 # our version on that platform.
1749 if test "$PORTNAME" = "solaris"; then
1753 # mingw has adopted a GNU-centric interpretation of optind/optreset,
1754 # so always use our version on Windows.
1755 if test "$PORTNAME" = "win32"; then
1757 AC_LIBOBJ(getopt_long)
1760 # Win32 (really MinGW) support
1761 if test "$PORTNAME" = "win32"; then
1762 AC_REPLACE_FUNCS(gettimeofday)
1768 AC_LIBOBJ(win32error)
1769 AC_LIBOBJ(win32security)
1770 AC_LIBOBJ(win32setlocale)
1771 AC_DEFINE([HAVE_SYMLINK], 1,
1772 [Define to 1 if you have the `symlink' function.])
1773 AC_CHECK_TYPES(MINIDUMP_TYPE, [pgac_minidump_type=yes], [pgac_minidump_type=no], [
1774 #define WIN32_LEAN_AND_MEAN
1775 #include <windows.h>
1777 #include <dbghelp.h>])
1779 if test x"$pgac_minidump_type" = x"yes" ; then
1780 AC_SUBST(have_win32_dbghelp,yes)
1782 AC_SUBST(have_win32_dbghelp,no)
1785 # Cygwin needs only a bit of that
1786 if test "$PORTNAME" = "cygwin"; then
1790 AC_CHECK_FUNC(syslog,
1791 [AC_CHECK_HEADER(syslog.h,
1792 [AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
1794 AC_CACHE_CHECK([for opterr], pgac_cv_var_int_opterr,
1795 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1796 [extern int opterr; opterr = 1;])],
1797 [pgac_cv_var_int_opterr=yes],
1798 [pgac_cv_var_int_opterr=no])])
1799 if test x"$pgac_cv_var_int_opterr" = x"yes"; then
1800 AC_DEFINE(HAVE_INT_OPTERR, 1, [Define to 1 if you have the global variable 'int opterr'.])
1803 AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
1804 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
1805 [extern int optreset; optreset = 1;])],
1806 [pgac_cv_var_int_optreset=yes],
1807 [pgac_cv_var_int_optreset=no])])
1808 if test x"$pgac_cv_var_int_optreset" = x"yes"; then
1809 AC_DEFINE(HAVE_INT_OPTRESET, 1, [Define to 1 if you have the global variable 'int optreset'.])
1812 AC_CHECK_FUNCS([strtoll __strtoll strtoq], [break])
1813 AC_CHECK_FUNCS([strtoull __strtoull strtouq], [break])
1814 # strto[u]ll may exist but not be declared
1815 AC_CHECK_DECLS([strtoll, strtoull])
1817 if test "$with_icu" = yes; then
1818 ac_save_CPPFLAGS=$CPPFLAGS
1819 CPPFLAGS="$ICU_CFLAGS $CPPFLAGS"
1821 # Verify we have ICU's header files
1822 AC_CHECK_HEADER(unicode/ucol.h, [],
1823 [AC_MSG_ERROR([header file <unicode/ucol.h> is required for ICU])])
1825 CPPFLAGS=$ac_save_CPPFLAGS
1828 if test "$with_llvm" = yes; then
1829 PGAC_CHECK_LLVM_FUNCTIONS()
1832 # Lastly, restore full LIBS list and check for readline/libedit symbols
1833 LIBS="$LIBS_including_readline"
1835 if test "$with_readline" = yes; then
1836 PGAC_VAR_RL_COMPLETION_APPEND_CHARACTER
1837 AC_CHECK_FUNCS([rl_completion_matches rl_filename_completion_function rl_reset_screen_size])
1838 AC_CHECK_FUNCS([append_history history_truncate_file])
1842 # This test makes sure that run tests work at all. Sometimes a shared
1843 # library is found by the linker, but the runtime linker can't find it.
1844 # This check should come after all modifications of compiler or linker
1845 # variables, and before any other run tests.
1846 AC_MSG_CHECKING([test program])
1847 AC_RUN_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],
1848 [AC_MSG_RESULT(ok)],
1849 [AC_MSG_RESULT(failed)
1851 Could not execute a simple test program. This may be a problem
1852 related to locating shared libraries. Check the file 'config.log'
1853 for the exact reason.]])],
1854 [AC_MSG_RESULT([cross-compiling])])
1856 # --------------------
1857 # Run tests below here
1858 # --------------------
1860 dnl Check to see if we have a working 64-bit integer type.
1861 dnl Since Postgres 8.4, we no longer support compilers without a working
1862 dnl 64-bit type; but we have to determine whether that type is called
1863 dnl "long int" or "long long int".
1865 PGAC_TYPE_64BIT_INT([long int])
1867 if test x"$HAVE_LONG_INT_64" = x"yes" ; then
1868 pg_int64_type="long int"
1870 PGAC_TYPE_64BIT_INT([long long int])
1871 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
1872 pg_int64_type="long long int"
1874 AC_MSG_ERROR([Cannot find a working 64-bit integer type.])
1878 AC_DEFINE_UNQUOTED(PG_INT64_TYPE, $pg_int64_type,
1879 [Define to the name of a signed 64-bit integer type.])
1881 # Select the printf length modifier that goes with that, too.
1882 if test x"$pg_int64_type" = x"long long int" ; then
1883 INT64_MODIFIER='"ll"'
1885 INT64_MODIFIER='"l"'
1888 AC_DEFINE_UNQUOTED(INT64_MODIFIER, $INT64_MODIFIER,
1889 [Define to the appropriate printf length modifier for 64-bit ints.])
1891 # has to be down here, rather than with the other builtins, because
1892 # the test uses PG_INT64_TYPE.
1893 PGAC_C_BUILTIN_OP_OVERFLOW
1895 # Check size of void *, size_t (enables tweaks for > 32bit address space)
1896 AC_CHECK_SIZEOF([void *])
1897 AC_CHECK_SIZEOF([size_t])
1898 AC_CHECK_SIZEOF([long])
1900 # Decide whether float4 is passed by value: user-selectable, enabled by default
1901 AC_MSG_CHECKING([whether to build with float4 passed by value])
1902 PGAC_ARG_BOOL(enable, float4-byval, yes, [disable float4 passed by value],
1903 [AC_DEFINE([USE_FLOAT4_BYVAL], 1,
1904 [Define to 1 if you want float4 values to be passed by value. (--enable-float4-byval)])
1905 float4passbyval=true],
1906 [float4passbyval=false])
1907 AC_MSG_RESULT([$enable_float4_byval])
1908 AC_DEFINE_UNQUOTED([FLOAT4PASSBYVAL], [$float4passbyval], [float4 values are passed by value if 'true', by reference if 'false'])
1910 # Decide whether float8 is passed by value.
1911 # Note: this setting also controls int8 and related types such as timestamp.
1912 # If sizeof(Datum) >= 8, this is user-selectable, enabled by default.
1913 # If not, trying to select it is an error.
1914 AC_MSG_CHECKING([whether to build with float8 passed by value])
1915 if test $ac_cv_sizeof_void_p -ge 8 ; then
1916 PGAC_ARG_BOOL(enable, float8-byval, yes, [disable float8 passed by value])
1918 PGAC_ARG_BOOL(enable, float8-byval, no, [disable float8 passed by value])
1919 if test "$enable_float8_byval" = yes ; then
1920 AC_MSG_ERROR([--enable-float8-byval is not supported on 32-bit platforms.])
1923 if test "$enable_float8_byval" = yes ; then
1924 AC_DEFINE([USE_FLOAT8_BYVAL], 1,
1925 [Define to 1 if you want float8, int8, etc values to be passed by value. (--enable-float8-byval)])
1926 float8passbyval=true
1928 float8passbyval=false
1930 AC_MSG_RESULT([$enable_float8_byval])
1931 AC_DEFINE_UNQUOTED([FLOAT8PASSBYVAL], [$float8passbyval], [float8, int8, and related values are passed by value if 'true', by reference if 'false'])
1933 # Determine memory alignment requirements for the basic C data types.
1935 AC_CHECK_ALIGNOF(short)
1936 AC_CHECK_ALIGNOF(int)
1937 AC_CHECK_ALIGNOF(long)
1938 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
1939 AC_CHECK_ALIGNOF(long long int)
1941 AC_CHECK_ALIGNOF(double)
1943 # Compute maximum alignment of any basic type.
1944 # We assume long's alignment is at least as strong as char, short, or int;
1945 # but we must check long long (if it is being used for int64) and double.
1946 # Note that we intentionally do not consider any types wider than 64 bits,
1947 # as allowing MAXIMUM_ALIGNOF to exceed 8 would be too much of a penalty
1948 # for disk and memory space.
1950 MAX_ALIGNOF=$ac_cv_alignof_long
1951 if test $MAX_ALIGNOF -lt $ac_cv_alignof_double ; then
1952 MAX_ALIGNOF=$ac_cv_alignof_double
1954 if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $ac_cv_alignof_long_long_int ; then
1955 MAX_ALIGNOF="$ac_cv_alignof_long_long_int"
1957 AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any C data type.])
1960 # Some platforms predefine the types int8, int16, etc. Only check
1961 # a (hopefully) representative subset.
1962 AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
1963 [#include <stdio.h>])
1965 # Some compilers offer a 128-bit integer scalar type.
1966 PGAC_TYPE_128BIT_INT
1968 # Check for various atomic operations now that we have checked how to declare
1970 PGAC_HAVE_GCC__SYNC_CHAR_TAS
1971 PGAC_HAVE_GCC__SYNC_INT32_TAS
1972 PGAC_HAVE_GCC__SYNC_INT32_CAS
1973 PGAC_HAVE_GCC__SYNC_INT64_CAS
1974 PGAC_HAVE_GCC__ATOMIC_INT32_CAS
1975 PGAC_HAVE_GCC__ATOMIC_INT64_CAS
1978 # Check for x86 cpuid instruction
1979 AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid],
1980 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>],
1981 [[unsigned int exx[4] = {0, 0, 0, 0};
1982 __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
1984 [pgac_cv__get_cpuid="yes"],
1985 [pgac_cv__get_cpuid="no"])])
1986 if test x"$pgac_cv__get_cpuid" = x"yes"; then
1987 AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.])
1990 AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid],
1991 [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>],
1992 [[unsigned int exx[4] = {0, 0, 0, 0};
1993 __get_cpuid(exx[0], 1);
1995 [pgac_cv__cpuid="yes"],
1996 [pgac_cv__cpuid="no"])])
1997 if test x"$pgac_cv__cpuid" = x"yes"; then
1998 AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.])
2001 # Check for Intel SSE 4.2 intrinsics to do CRC calculations.
2003 # First check if the _mm_crc32_u8 and _mm_crc32_u64 intrinsics can be used
2004 # with the default compiler flags. If not, check if adding the -msse4.2
2005 # flag helps. CFLAGS_SSE42 is set to -msse4.2 if that's required.
2006 PGAC_SSE42_CRC32_INTRINSICS([])
2007 if test x"$pgac_sse42_crc32_intrinsics" != x"yes"; then
2008 PGAC_SSE42_CRC32_INTRINSICS([-msse4.2])
2010 AC_SUBST(CFLAGS_SSE42)
2012 # Are we targeting a processor that supports SSE 4.2? gcc, clang and icc all
2013 # define __SSE4_2__ in that case.
2014 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
2016 #error __SSE4_2__ not defined
2018 ])], [SSE4_2_TARGETED=1])
2020 # Check for ARMv8 CRC Extension intrinsics to do CRC calculations.
2022 # First check if __crc32c* intrinsics can be used with the default compiler
2023 # flags. If not, check if adding -march=armv8-a+crc flag helps.
2024 # CFLAGS_ARMV8_CRC32C is set if the extra flag is required.
2025 PGAC_ARMV8_CRC32C_INTRINSICS([])
2026 if test x"$pgac_armv8_crc32c_intrinsics" != x"yes"; then
2027 PGAC_ARMV8_CRC32C_INTRINSICS([-march=armv8-a+crc])
2029 AC_SUBST(CFLAGS_ARMV8_CRC32C)
2031 # Select CRC-32C implementation.
2033 # If we are targeting a processor that has Intel SSE 4.2 instructions, we can
2034 # use the special CRC instructions for calculating CRC-32C. If we're not
2035 # targeting such a processor, but we can nevertheless produce code that uses
2036 # the SSE intrinsics, perhaps with some extra CFLAGS, compile both
2037 # implementations and select which one to use at runtime, depending on whether
2038 # SSE 4.2 is supported by the processor we're running on.
2040 # Similarly, if we are targeting an ARM processor that has the CRC
2041 # instructions that are part of the ARMv8 CRC Extension, use them. And if
2042 # we're not targeting such a processor, but can nevertheless produce code that
2043 # uses the CRC instructions, compile both, and select at runtime.
2045 # You can override this logic by setting the appropriate USE_*_CRC32 flag to 1
2046 # in the template or configure command line.
2047 if test x"$USE_SLICING_BY_8_CRC32C" = x"" && test x"$USE_SSE42_CRC32C" = x"" && test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"" && test x"$USE_ARMV8_CRC32C" = x"" && test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x""; then
2048 # Use Intel SSE 4.2 if available.
2049 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then
2052 # Intel SSE 4.2, with runtime check? The CPUID instruction is needed for
2053 # the runtime check.
2054 if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && (test x"$pgac_cv__get_cpuid" = x"yes" || test x"$pgac_cv__cpuid" = x"yes"); then
2055 USE_SSE42_CRC32C_WITH_RUNTIME_CHECK=1
2057 # Use ARM CRC Extension if available.
2058 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$CFLAGS_ARMV8_CRC32C" = x""; then
2061 # ARM CRC Extension, with runtime check?
2062 if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then
2063 USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1
2065 # fall back to slicing-by-8 algorithm, which doesn't require any
2066 # special CPU support.
2067 USE_SLICING_BY_8_CRC32C=1
2074 # Set PG_CRC32C_OBJS appropriately depending on the selected implementation.
2075 AC_MSG_CHECKING([which CRC-32C implementation to use])
2076 if test x"$USE_SSE42_CRC32C" = x"1"; then
2077 AC_DEFINE(USE_SSE42_CRC32C, 1, [Define to 1 use Intel SSE 4.2 CRC instructions.])
2078 PG_CRC32C_OBJS="pg_crc32c_sse42.o"
2079 AC_MSG_RESULT(SSE 4.2)
2081 if test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2082 AC_DEFINE(USE_SSE42_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check.])
2083 PG_CRC32C_OBJS="pg_crc32c_sse42.o pg_crc32c_sb8.o pg_crc32c_sse42_choose.o"
2084 AC_MSG_RESULT(SSE 4.2 with runtime check)
2086 if test x"$USE_ARMV8_CRC32C" = x"1"; then
2087 AC_DEFINE(USE_ARMV8_CRC32C, 1, [Define to 1 to use ARMv8 CRC Extension.])
2088 PG_CRC32C_OBJS="pg_crc32c_armv8.o"
2089 AC_MSG_RESULT(ARMv8 CRC instructions)
2091 if test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
2092 AC_DEFINE(USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use ARMv8 CRC Extension with a runtime check.])
2093 PG_CRC32C_OBJS="pg_crc32c_armv8.o pg_crc32c_sb8.o pg_crc32c_armv8_choose.o"
2094 AC_MSG_RESULT(ARMv8 CRC instructions with runtime check)
2096 AC_DEFINE(USE_SLICING_BY_8_CRC32C, 1, [Define to 1 to use software CRC-32C implementation (slicing-by-8).])
2097 PG_CRC32C_OBJS="pg_crc32c_sb8.o"
2098 AC_MSG_RESULT(slicing-by-8)
2103 AC_SUBST(PG_CRC32C_OBJS)
2106 # Select semaphore implementation type.
2107 if test "$PORTNAME" != "win32"; then
2108 if test x"$PREFERRED_SEMAPHORES" = x"NAMED_POSIX" ; then
2109 # Need sem_open for this
2110 AC_SEARCH_LIBS(sem_open, [rt pthread], [USE_NAMED_POSIX_SEMAPHORES=1])
2112 if test x"$PREFERRED_SEMAPHORES" = x"UNNAMED_POSIX" ; then
2113 # Need sem_init for this
2114 AC_SEARCH_LIBS(sem_init, [rt pthread], [USE_UNNAMED_POSIX_SEMAPHORES=1])
2116 AC_MSG_CHECKING([which semaphore API to use])
2117 if test x"$USE_NAMED_POSIX_SEMAPHORES" = x"1" ; then
2118 AC_DEFINE(USE_NAMED_POSIX_SEMAPHORES, 1, [Define to select named POSIX semaphores.])
2119 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2120 sematype="named POSIX"
2122 if test x"$USE_UNNAMED_POSIX_SEMAPHORES" = x"1" ; then
2123 AC_DEFINE(USE_UNNAMED_POSIX_SEMAPHORES, 1, [Define to select unnamed POSIX semaphores.])
2124 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
2125 sematype="unnamed POSIX"
2127 AC_DEFINE(USE_SYSV_SEMAPHORES, 1, [Define to select SysV-style semaphores.])
2128 SEMA_IMPLEMENTATION="src/backend/port/sysv_sema.c"
2132 AC_MSG_RESULT([$sematype])
2134 AC_DEFINE(USE_WIN32_SEMAPHORES, 1, [Define to select Win32-style semaphores.])
2135 SEMA_IMPLEMENTATION="src/backend/port/win32_sema.c"
2139 # Select shared-memory implementation type.
2140 if test "$PORTNAME" != "win32"; then
2141 AC_DEFINE(USE_SYSV_SHARED_MEMORY, 1, [Define to select SysV-style shared memory.])
2142 SHMEM_IMPLEMENTATION="src/backend/port/sysv_shmem.c"
2144 AC_DEFINE(USE_WIN32_SHARED_MEMORY, 1, [Define to select Win32-style shared memory.])
2145 SHMEM_IMPLEMENTATION="src/backend/port/win32_shmem.c"
2148 # Select random number source
2150 # You can override this logic by setting the appropriate USE_*RANDOM flag to 1
2151 # in the template or configure command line.
2153 # If not selected manually, try to select a source automatically.
2154 if test "$enable_strong_random" = "yes" && test x"$USE_OPENSSL_RANDOM" = x"" && test x"$USE_WIN32_RANDOM" = x"" && test x"$USE_DEV_URANDOM" = x"" ; then
2155 if test x"$with_openssl" = x"yes" ; then
2156 USE_OPENSSL_RANDOM=1
2157 elif test "$PORTNAME" = "win32" ; then
2160 AC_CHECK_FILE([/dev/urandom], [], [])
2162 if test x"$ac_cv_file__dev_urandom" = x"yes" ; then
2168 AC_MSG_CHECKING([which random number source to use])
2169 if test "$enable_strong_random" = yes ; then
2170 if test x"$USE_OPENSSL_RANDOM" = x"1" ; then
2171 AC_DEFINE(USE_OPENSSL_RANDOM, 1, [Define to use OpenSSL for random number generation])
2172 AC_MSG_RESULT([OpenSSL])
2173 elif test x"$USE_WIN32_RANDOM" = x"1" ; then
2174 AC_DEFINE(USE_WIN32_RANDOM, 1, [Define to use native Windows API for random number generation])
2175 AC_MSG_RESULT([Windows native])
2176 elif test x"$USE_DEV_URANDOM" = x"1" ; then
2177 AC_DEFINE(USE_DEV_URANDOM, 1, [Define to use /dev/urandom for random number generation])
2178 AC_MSG_RESULT([/dev/urandom])
2181 no source of strong random numbers was found
2182 PostgreSQL can use OpenSSL or /dev/urandom as a source of random numbers,
2183 for authentication protocols. You can use --disable-strong-random to use a
2184 built-in pseudo random number generator, but that may be insecure.])
2186 AC_DEFINE(HAVE_STRONG_RANDOM, 1, [Define to use have a strong random number source])
2188 AC_MSG_RESULT([weak builtin PRNG])
2190 *** Not using a strong random number source may be insecure.])
2193 # If not set in template file, set bytes to use libc memset()
2194 if test x"$MEMSET_LOOP_LIMIT" = x"" ; then
2195 MEMSET_LOOP_LIMIT=1024
2197 AC_DEFINE_UNQUOTED(MEMSET_LOOP_LIMIT, ${MEMSET_LOOP_LIMIT}, [Define bytes to use libc memset().])
2200 if test "$enable_nls" = yes ; then
2204 # Check for Tcl configuration script tclConfig.sh
2205 if test "$with_tcl" = yes; then
2206 PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
2207 PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
2208 [TCL_INCLUDE_SPEC,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
2209 AC_SUBST(TCL_SHLIB_LD_LIBS)dnl don't want to double-evaluate that one
2210 if test "$TCL_SHARED_BUILD" != 1; then
2211 AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
2212 Use --without-tcl to disable building PL/Tcl.])
2214 # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
2215 ac_save_CPPFLAGS=$CPPFLAGS
2216 CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
2217 AC_CHECK_HEADER(tcl.h, [], [AC_MSG_ERROR([header file <tcl.h> is required for Tcl])])
2218 CPPFLAGS=$ac_save_CPPFLAGS
2221 # check for <perl.h>
2222 if test "$with_perl" = yes; then
2223 ac_save_CPPFLAGS=$CPPFLAGS
2224 CPPFLAGS="$CPPFLAGS $perl_includespec"
2225 AC_CHECK_HEADER(perl.h, [], [AC_MSG_ERROR([header file <perl.h> is required for Perl])],
2226 [#include <EXTERN.h>])
2227 # While we're at it, check that we can link to libperl.
2228 # On most platforms, if perl.h is there then libperl.so will be too, but at
2229 # this writing Debian packages them separately. There is no known reason to
2230 # waste cycles on separate probes for the Tcl or Python libraries, though.
2231 pgac_save_LIBS=$LIBS
2232 LIBS="$perl_embed_ldflags"
2233 AC_MSG_CHECKING([for libperl])
2234 AC_LINK_IFELSE([AC_LANG_PROGRAM([
2237 ], [perl_alloc();])],
2238 [AC_MSG_RESULT(yes)],
2240 AC_MSG_ERROR([libperl library is required for Perl])])
2241 LIBS=$pgac_save_LIBS
2242 CPPFLAGS=$ac_save_CPPFLAGS
2245 # check for <Python.h>
2246 if test "$with_python" = yes; then
2247 ac_save_CPPFLAGS=$CPPFLAGS
2248 CPPFLAGS="$python_includespec $CPPFLAGS"
2249 AC_CHECK_HEADER(Python.h, [], [AC_MSG_ERROR([header file <Python.h> is required for Python])])
2250 CPPFLAGS=$ac_save_CPPFLAGS
2254 # Check for DocBook and tools
2257 PGAC_CHECK_DOCBOOK(4.2)
2258 PGAC_PATH_PROGS(DBTOEPUB, dbtoepub)
2259 PGAC_PATH_PROGS(XSLTPROC, xsltproc)
2260 PGAC_PATH_PROGS(FOP, fop)
2263 # Check for test tools
2265 if test "$enable_tap_tests" = yes; then
2266 # Check for necessary modules, unless user has specified the "prove" to use;
2267 # in that case it's her responsibility to have a working configuration.
2268 # (prove might be part of a different Perl installation than perl, eg on
2269 # MSys, so the result of AX_PROG_PERL_MODULES could be irrelevant anyway.)
2270 if test -z "$PROVE"; then
2271 # Test::More and Time::HiRes are supposed to be part of core Perl,
2272 # but some distros omit them in a minimal installation.
2273 AX_PROG_PERL_MODULES([IPC::Run Test::More=0.87 Time::HiRes], ,
2274 [AC_MSG_ERROR([Additional Perl modules are required to run TAP tests])])
2276 # Now make sure we know where prove is
2277 PGAC_PATH_PROGS(PROVE, prove)
2278 if test -z "$PROVE"; then
2279 AC_MSG_ERROR([prove not found])
2285 # We have to run the thread test near the end so we have all our symbols
2286 # defined. Cross compiling throws a warning.
2288 if test "$enable_thread_safety" = yes; then
2289 if test "$PORTNAME" != "win32"
2291 AC_MSG_CHECKING([thread safety of required library functions])
2295 CFLAGS="$CFLAGS $PTHREAD_CFLAGS -DIN_CONFIGURE"
2296 LIBS="$LIBS $PTHREAD_LIBS"
2298 [AC_LANG_SOURCE([[#include "$srcdir/src/test/thread/thread_test.c"]])],
2299 [AC_MSG_RESULT(yes)],
2301 AC_MSG_ERROR([thread test program failed
2302 This platform is not thread-safe. Check the file 'config.log' or compile
2303 and run src/test/thread/thread_test for the exact reason.
2304 Use --disable-thread-safety to disable thread safety.])],
2305 [AC_MSG_RESULT(maybe)
2307 *** Skipping thread test program because of cross-compile build.
2308 *** Run the program in src/test/thread on the target machine.
2313 AC_MSG_WARN([*** skipping thread test on Win32])
2317 # If compiler will take -Wl,--as-needed (or various platform-specific
2318 # spellings thereof) then add that to LDFLAGS. This is much easier than
2319 # trying to filter LIBS to the minimum for each executable.
2320 # On (at least) some Red-Hat-derived systems, this switch breaks linking to
2321 # libreadline; therefore we postpone testing it until we know what library
2322 # dependencies readline has. The test code will try to link with $LIBS.
2323 if test "$with_readline" = yes; then
2324 link_test_func=readline
2329 if test "$PORTNAME" = "darwin"; then
2330 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-dead_strip_dylibs], $link_test_func)
2331 elif test "$PORTNAME" = "openbsd"; then
2332 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,-Bdynamic], $link_test_func)
2334 PGAC_PROG_CC_LDFLAGS_OPT([-Wl,--as-needed], $link_test_func)
2337 # Create compiler version string
2338 if test x"$GCC" = x"yes" ; then
2339 cc_string=`${CC} --version | sed q`
2340 case $cc_string in [[A-Za-z]]*) ;; *) cc_string="GCC $cc_string";; esac
2341 elif test x"$SUN_STUDIO_CC" = x"yes" ; then
2342 cc_string=`${CC} -V 2>&1 | sed q`
2347 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
2348 ["PostgreSQL $PG_VERSION on $host, compiled by $cc_string, `expr $ac_cv_sizeof_void_p \* 8`-bit"],
2349 [A string containing the version number, platform, and C compiler])
2351 # Supply a numeric version string for use by 3rd party add-ons
2352 # awk -F is a regex on some platforms, and not on others, so make "." a tab
2353 [PG_VERSION_NUM="`echo "$PACKAGE_VERSION" | sed 's/[A-Za-z].*$//' |
2355 $AWK '{printf "%d%04d", $1, $2}'`"]
2356 AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
2357 AC_SUBST(PG_VERSION_NUM)
2359 # If we are inserting PG_SYSROOT into CPPFLAGS, do so symbolically not
2360 # literally, so that it's possible to override it at build time using
2361 # a command like "make ... PG_SYSROOT=path". This has to be done after
2362 # we've finished all configure checks that depend on CPPFLAGS.
2363 if test x"$PG_SYSROOT" != x; then
2364 CPPFLAGS=`echo "$CPPFLAGS" | sed -e "s| $PG_SYSROOT | \\\$(PG_SYSROOT) |"`
2366 AC_SUBST(PG_SYSROOT)
2369 # Begin output steps
2371 AC_MSG_NOTICE([using compiler=$cc_string])
2372 AC_MSG_NOTICE([using CFLAGS=$CFLAGS])
2373 AC_MSG_NOTICE([using CPPFLAGS=$CPPFLAGS])
2374 AC_MSG_NOTICE([using LDFLAGS=$LDFLAGS])
2375 # Currently only used when LLVM is used
2376 if test "$with_llvm" = yes ; then
2377 AC_MSG_NOTICE([using CXX=$CXX])
2378 AC_MSG_NOTICE([using CXXFLAGS=$CXXFLAGS])
2379 AC_MSG_NOTICE([using CLANG=$CLANG])
2380 AC_MSG_NOTICE([using BITCODE_CFLAGS=$BITCODE_CFLAGS])
2381 AC_MSG_NOTICE([using BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS])
2384 # prepare build tree if outside source tree
2385 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
2386 # Note 2: /bin/pwd might be better than shell's built-in at getting
2387 # a symlink-free name.
2388 if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
2392 if test "$no_create" != yes; then
2393 _AS_ECHO_N([preparing build tree... ])
2394 pgac_abs_top_srcdir=`cd "$srcdir" && pwd`
2395 $SHELL "$ac_aux_dir/prep_buildtree" "$pgac_abs_top_srcdir" "." \
2396 || AC_MSG_ERROR(failed)
2400 AC_SUBST(vpath_build)
2403 AC_CONFIG_FILES([GNUmakefile src/Makefile.global])
2406 src/backend/port/pg_sema.c:${SEMA_IMPLEMENTATION}
2407 src/backend/port/pg_shmem.c:${SHMEM_IMPLEMENTATION}
2408 src/include/pg_config_os.h:src/include/port/${template}.h
2409 src/Makefile.port:src/makefiles/Makefile.${template}
2412 if test "$PORTNAME" = "win32"; then
2413 AC_CONFIG_COMMANDS([check_win32_symlinks],[
2414 # Links sometimes fail undetected on Mingw -
2415 # so here we detect it and warn the user
2416 for FILE in $CONFIG_LINKS
2418 # test -e works for symlinks in the MinGW console
2419 test -e `expr "$FILE" : '\([[^:]]*\)'` || AC_MSG_WARN([*** link for $FILE -- please fix by hand])
2424 AC_CONFIG_HEADERS([src/include/pg_config.h],
2426 # Update timestamp for pg_config.h (see Makefile.global)
2427 echo >src/include/stamp-h
2430 AC_CONFIG_HEADERS([src/include/pg_config_ext.h],
2432 # Update timestamp for pg_config_ext.h (see Makefile.global)
2433 echo >src/include/stamp-ext-h
2436 AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
2437 [echo >src/interfaces/ecpg/include/stamp-h])