dnl
m4_pattern_forbid(^PGAC_)dnl to catch undefined macros
-AC_INIT([PostgreSQL], [9.5devel], [pgsql-bugs@postgresql.org])
+AC_INIT([PostgreSQL], [9.6devel], [pgsql-bugs@postgresql.org])
m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.69], [], [m4_fatal([Autoconf version 2.69 is required.
Untested combinations of 'autoconf' and PostgreSQL versions are not
# Check if it's Intel's compiler, which (usually) pretends to be gcc,
# but has idiosyncrasies of its own. We assume icc will define
# __INTEL_COMPILER regardless of CFLAGS.
-AC_TRY_COMPILE([], [@%:@ifndef __INTEL_COMPILER
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __INTEL_COMPILER
choke me
-@%:@endif], [ICC=[yes]], [ICC=[no]])
+@%:@endif])], [ICC=yes], [ICC=no])
# Check if it's Sun Studio compiler. We assume that
# __SUNPRO_C will be defined for Sun Studio compilers
-AC_TRY_COMPILE([], [@%:@ifndef __SUNPRO_C
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __SUNPRO_C
choke me
-@%:@endif], [SUN_STUDIO_CC=yes], [SUN_STUDIO_CC=no])
+@%:@endif])], [SUN_STUDIO_CC=yes], [SUN_STUDIO_CC=no])
AC_SUBST(SUN_STUDIO_CC)
fi
fi
+# CFLAGS we determined above will be added back at the end
+user_CFLAGS=$CFLAGS
+CFLAGS=""
+
# set CFLAGS_VECTOR from the environment, if available
if test "$ac_env_CFLAGS_VECTOR_set" = set; then
CFLAGS_VECTOR=$ac_env_CFLAGS_VECTOR_value
# but has its own. Also check other compiler-specific flags here.
if test "$GCC" = yes -a "$ICC" = no; then
- CFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wpointer-arith"
+ CFLAGS="-Wall -Wmissing-prototypes -Wpointer-arith"
# These work in some but not all gcc versions
PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement])
PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels])
# Optimization flags for specific files that benefit from vectorization
PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTOR, [-funroll-loops])
PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTOR, [-ftree-vectorize])
+ # We want to suppress clang's unhelpful unused-command-line-argument warnings
+ # but gcc won't complain about unrecognized -Wno-foo switches, so we have to
+ # test for the positive form and if that works, add the negative form
+ PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wunused-command-line-argument])
+ if test -n "$NOT_THE_CFLAGS"; then
+ CFLAGS="$CFLAGS -Wno-unused-command-line-argument"
+ fi
elif test "$ICC" = yes; then
# Intel's compiler has a bug/misoptimization in checking for
# division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.
elif test "$PORTNAME" = "aix"; then
# AIX's xlc has to have strict aliasing turned off too
PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])
+ PGAC_PROG_CC_CFLAGS_OPT([-qlonglong])
elif test "$PORTNAME" = "hpux"; then
# On some versions of HP-UX, libm functions do not set errno by default.
# Fix that by using +Olibmerrno if the compiler recognizes it.
CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32 -DEXEC_BACKEND"
fi
-# Check if the compiler still works with the template settings
+# Now that we're done automatically adding stuff to CFLAGS, put back the
+# user-specified flags (if any) at the end. This lets users override
+# the automatic additions.
+CFLAGS="$CFLAGS $user_CFLAGS"
+
+# Check if the compiler still works with the final flag settings
AC_MSG_CHECKING([whether the C compiler still works])
-AC_TRY_LINK([], [return 0;],
+AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_MSG_ERROR([cannot proceed])])
# Defend against gcc -ffast-math
if test "$GCC" = yes; then
-AC_TRY_COMPILE([], [@%:@ifdef __FAST_MATH__
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifdef __FAST_MATH__
choke me
-@%:@endif], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
+@%:@endif])], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
fi
AC_PROG_CPP
AC_CACHE_CHECK([whether ld -R works], [pgac_cv_prog_ld_R],
[
pgac_save_LDFLAGS=$LDFLAGS; LDFLAGS="$LDFLAGS -Wl,-R/usr/lib"
- AC_TRY_LINK([], [], [pgac_cv_prog_ld_R=yes], [pgac_cv_prog_ld_R=no])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
+ [pgac_cv_prog_ld_R=yes],
+ [pgac_cv_prog_ld_R=no])
LDFLAGS=$pgac_save_LDFLAGS
])
ld_R_works=$pgac_cv_prog_ld_R
AC_MSG_ERROR([Perl not found])
fi
PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
+ if test "$perl_useshrplib" != yes && test "$perl_useshrplib" != true; then
+ AC_MSG_ERROR([cannot build PL/Perl because libperl is not a shared library
+You might have to rebuild your Perl installation. Refer to the
+documentation for details. Use --without-perl to disable building
+PL/Perl.])
+ fi
PGAC_CHECK_PERL_EMBED_LDFLAGS
fi
if test "$with_python" = yes; then
PGAC_PATH_PYTHON
PGAC_CHECK_PYTHON_EMBED_SETUP
+
+ # We need libpython as a shared library. With Python >=2.5, we
+ # check the Py_ENABLE_SHARED setting. On Debian, the setting is not
+ # correct before the jessie release (http://bugs.debian.org/695979).
+ # We also want to support older Python versions. So as a fallback
+ # we see if there is a file that is named like a shared library.
+
+ if test "$python_enable_shared" != 1; then
+ if test "$PORTNAME" = darwin; then
+ # OS X does supply a .dylib even though Py_ENABLE_SHARED does
+ # not get set. The file detection logic below doesn't succeed
+ # on older OS X versions, so make it explicit.
+ python_enable_shared=1
+ elif test "$PORTNAME" = win32; then
+ # Windows also needs an explicit override.
+ python_enable_shared=1
+ else
+ # We don't know the platform shared library extension here yet,
+ # so we try some candidates.
+ for dlsuffix in .so .sl; do
+ if ls "$python_libdir"/libpython*${dlsuffix}* >/dev/null 2>&1; then
+ python_enable_shared=1
+ break
+ fi
+ done
+ fi
+ fi
+
+ if test "$python_enable_shared" != 1; then
+ AC_MSG_ERROR([cannot build PL/Python because libpython is not a shared library
+You might have to rebuild your Python installation. Refer to the
+documentation for details. Use --without-python to disable building
+PL/Python.])
+ fi
fi
if test "$cross_compiling" = yes && test -z "$with_system_tzdata"; then
fi
fi
+#
+# Pthreads
+#
+# For each platform, we need to know about any special compile and link
+# libraries, and whether the normal C function names are thread-safe.
+# See the comment at the top of src/port/thread.c for more information.
+# WIN32 doesn't need the pthread tests; it always uses threads
+#
+# These tests are run before the library-tests, because linking with the
+# other libraries can pull in the pthread functions as a side-effect. We
+# want to use the -pthread or similar flags directly, and not rely on
+# the side-effects of linking with some other library.
+#
+# note: We have to use AS_IF here rather than plain if. The AC_CHECK_HEADER
+# invocation below is the first one in the script, and autoconf generates
+# additional code for that, which must not be inside the if-block. AS_IF
+# knows how to do that.
+AS_IF([test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"],
+[ # then
+AX_PTHREAD # set thread flags
+
+# Some platforms use these, so just define them. They can't hurt if they
+# are not supported. For example, on Solaris -D_POSIX_PTHREAD_SEMANTICS
+# enables 5-arg getpwuid_r, among other things.
+PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE -D_POSIX_PTHREAD_SEMANTICS"
+
+# Check for *_r functions
+_CFLAGS="$CFLAGS"
+_LIBS="$LIBS"
+CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+LIBS="$LIBS $PTHREAD_LIBS"
+
+AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
+pthread.h not found; use --disable-thread-safety to disable thread safety])])
+
+AC_CHECK_FUNCS([strerror_r getpwuid_r gethostbyname_r])
+
+# Do test here with the proper thread flags
+PGAC_FUNC_STRERROR_R_INT
+
+CFLAGS="$_CFLAGS"
+LIBS="$_LIBS"
+
+], [ # else
+# do not use values from template file
+PTHREAD_CFLAGS=
+PTHREAD_LIBS=
+]) # fi
+
+AC_SUBST(PTHREAD_CFLAGS)
+AC_SUBST(PTHREAD_LIBS)
+
##
## Libraries
AC_SEARCH_LIBS(shm_unlink, rt)
# Solaris:
AC_SEARCH_LIBS(fdatasync, [rt posix4])
+# Required for thread_test.c on Solaris
+AC_SEARCH_LIBS(sched_yield, rt)
# Required for thread_test.c on Solaris 2.5:
# Other ports use it too (HP-UX) so test unconditionally
AC_SEARCH_LIBS(gethostbyname_r, nsl)
AC_CHECK_LIB(xslt, xsltCleanupGlobals, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
fi
+# Note: We can test for libldap_r only after we know PTHREAD_LIBS
+if test "$with_ldap" = yes ; then
+ _LIBS="$LIBS"
+ if test "$PORTNAME" != "win32"; then
+ AC_CHECK_LIB(ldap, ldap_bind, [],
+ [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
+ [$EXTRA_LDAP_LIBS])
+ LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
+ if test "$enable_thread_safety" = yes; then
+ # on some platforms ldap_r fails to link without PTHREAD_LIBS
+ AC_CHECK_LIB(ldap_r, ldap_simple_bind, [],
+ [AC_MSG_ERROR([library 'ldap_r' is required for LDAP])],
+ [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
+ LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"
+ else
+ LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
+ fi
+ else
+ AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
+ LDAP_LIBS_FE="-lwldap32"
+ LDAP_LIBS_BE="-lwldap32"
+ fi
+ LIBS="$_LIBS"
+fi
+AC_SUBST(LDAP_LIBS_FE)
+AC_SUBST(LDAP_LIBS_BE)
+
# for contrib/sepgsql
if test "$with_selinux" = yes; then
AC_CHECK_LIB(selinux, security_compute_create_name, [],
m4_defun([AC_PROG_CC_STDC], []) dnl We don't want that.
AC_C_BIGENDIAN
-PGAC_C_INLINE
+AC_C_INLINE
PGAC_PRINTF_ARCHETYPE
AC_C_FLEXIBLE_ARRAY_MEMBER
PGAC_C_SIGNED
PGAC_C_FUNCNAME_SUPPORT
PGAC_C_STATIC_ASSERT
PGAC_C_TYPES_COMPATIBLE
+PGAC_C_BUILTIN_BSWAP32
PGAC_C_BUILTIN_CONSTANT_P
PGAC_C_BUILTIN_UNREACHABLE
PGAC_C_VA_ARGS
case $host_cpu in
ppc*|powerpc*)
AC_MSG_CHECKING([whether assembler supports lwarx hint bit])
- AC_TRY_COMPILE([],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[int a = 0; int *p = &a; int r;
- __asm__ __volatile__ (" lwarx %0,0,%1,1\n" : "=&r"(r) : "r"(p));],
+ __asm__ __volatile__ (" lwarx %0,0,%1,1\n" : "=&r"(r) : "r"(p));])],
[pgac_cv_have_ppc_mutex_hint=yes],
[pgac_cv_have_ppc_mutex_hint=no])
AC_MSG_RESULT([$pgac_cv_have_ppc_mutex_hint])
LIBS_including_readline="$LIBS"
LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
-AC_CHECK_FUNCS([cbrt dlopen fdatasync getifaddrs getpeerucred getrlimit mbstowcs_l memmove poll pstat pthread_is_threaded_np readlink setproctitle setsid shm_open sigprocmask symlink sync_file_range towlower utime utimes wcstombs wcstombs_l])
+AC_CHECK_FUNCS([cbrt dlopen fdatasync getifaddrs getpeerucred getrlimit mbstowcs_l memmove poll pstat pthread_is_threaded_np readlink setproctitle setsid shm_open symlink sync_file_range towlower utime utimes wcstombs wcstombs_l])
AC_REPLACE_FUNCS(fseeko)
case $host_os in
AC_SUBST(HAVE_IPV6)
AC_CACHE_CHECK([for PS_STRINGS], [pgac_cv_var_PS_STRINGS],
-[AC_TRY_LINK(
+[AC_LINK_IFELSE([AC_LANG_PROGRAM(
[#include <machine/vmparam.h>
#include <sys/exec.h>
],
[PS_STRINGS->ps_nargvstr = 1;
-PS_STRINGS->ps_argvstr = "foo";],
+PS_STRINGS->ps_argvstr = "foo";])],
[pgac_cv_var_PS_STRINGS=yes],
[pgac_cv_var_PS_STRINGS=no])])
if test "$pgac_cv_var_PS_STRINGS" = yes ; then
dnl Cannot use AC_CHECK_FUNC because isinf may be a macro
AC_CACHE_CHECK([for isinf], ac_cv_func_isinf,
-[AC_TRY_LINK([
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <math.h>
double glob_double;
],
-[return isinf(glob_double) ? 0 : 1;],
+[return isinf(glob_double) ? 0 : 1;])],
[ac_cv_func_isinf=yes],
[ac_cv_func_isinf=no])])
AC_LIBOBJ(getopt_long)
fi
-# Win32 support
+# Win32 (really MinGW) support
if test "$PORTNAME" = "win32"; then
AC_REPLACE_FUNCS(gettimeofday)
+ AC_LIBOBJ(dirmod)
AC_LIBOBJ(kill)
AC_LIBOBJ(open)
AC_LIBOBJ(system)
AC_SUBST(have_win32_dbghelp,no)
fi
-dnl Cannot use AC_CHECK_FUNC because sigsetjmp may be a macro
-dnl (especially on GNU libc)
-dnl See also comments in c.h.
-AC_CACHE_CHECK([for sigsetjmp], pgac_cv_func_sigsetjmp,
-[AC_TRY_LINK([#include <setjmp.h>],
- [sigjmp_buf x; sigsetjmp(x, 1);],
- [pgac_cv_func_sigsetjmp=yes],
- [pgac_cv_func_sigsetjmp=no])])
-if test x"$pgac_cv_func_sigsetjmp" = x"yes"; then
- AC_DEFINE(HAVE_SIGSETJMP, 1, [Define to 1 if you have sigsetjmp().])
+# Cygwin needs only a bit of that
+if test "$PORTNAME" = "cygwin"; then
+ AC_LIBOBJ(dirmod)
fi
-AC_DECL_SYS_SIGLIST
+AC_CHECK_DECLS([sys_siglist], [], [],
+[#include <signal.h>
+/* NetBSD declares sys_siglist in unistd.h. */
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+])
AC_CHECK_FUNC(syslog,
[AC_CHECK_HEADER(syslog.h,
[AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
AC_CACHE_CHECK([for opterr], pgac_cv_var_int_opterr,
-[AC_TRY_LINK([#include <unistd.h>],
- [extern int opterr; opterr = 1;],
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
+ [extern int opterr; opterr = 1;])],
[pgac_cv_var_int_opterr=yes],
[pgac_cv_var_int_opterr=no])])
if test x"$pgac_cv_var_int_opterr" = x"yes"; then
fi
AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
-[AC_TRY_LINK([#include <unistd.h>],
- [extern int optreset; optreset = 1;],
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
+ [extern int optreset; optreset = 1;])],
[pgac_cv_var_int_optreset=yes],
[pgac_cv_var_int_optreset=no])])
if test x"$pgac_cv_var_int_optreset" = x"yes"; then
fi
-#
-# Pthreads
-#
-# For each platform, we need to know about any special compile and link
-# libraries, and whether the normal C function names are thread-safe.
-# See the comment at the top of src/port/thread.c for more information.
-# WIN32 doesn't need the pthread tests; it always uses threads
-if test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"; then
-ACX_PTHREAD # set thread flags
-
-# Some platforms use these, so just define them. They can't hurt if they
-# are not supported. For example, on Solaris -D_POSIX_PTHREAD_SEMANTICS
-# enables 5-arg getpwuid_r, among other things.
-PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE -D_POSIX_PTHREAD_SEMANTICS"
-
-# Check for *_r functions
-_CFLAGS="$CFLAGS"
-_LIBS="$LIBS"
-CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-LIBS="$LIBS $PTHREAD_LIBS"
-
-if test "$PORTNAME" != "win32"; then
-AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([
-pthread.h not found; use --disable-thread-safety to disable thread safety])])
-fi
-
-AC_CHECK_FUNCS([strerror_r getpwuid_r gethostbyname_r])
-
-# Do test here with the proper thread flags
-PGAC_FUNC_GETPWUID_R_5ARG
-PGAC_FUNC_STRERROR_R_INT
-
-CFLAGS="$_CFLAGS"
-LIBS="$_LIBS"
-
-else
-# do not use values from template file
-PTHREAD_CFLAGS=
-PTHREAD_LIBS=
-fi
-
-AC_SUBST(PTHREAD_CFLAGS)
-AC_SUBST(PTHREAD_LIBS)
-
-
-# We can test for libldap_r only after we know PTHREAD_LIBS
-if test "$with_ldap" = yes ; then
- _LIBS="$LIBS"
- if test "$PORTNAME" != "win32"; then
- AC_CHECK_LIB(ldap, ldap_bind, [],
- [AC_MSG_ERROR([library 'ldap' is required for LDAP])],
- [$EXTRA_LDAP_LIBS])
- LDAP_LIBS_BE="-lldap $EXTRA_LDAP_LIBS"
- if test "$enable_thread_safety" = yes; then
- # on some platforms ldap_r fails to link without PTHREAD_LIBS
- AC_CHECK_LIB(ldap_r, ldap_simple_bind, [],
- [AC_MSG_ERROR([library 'ldap_r' is required for LDAP])],
- [$PTHREAD_CFLAGS $PTHREAD_LIBS $EXTRA_LDAP_LIBS])
- LDAP_LIBS_FE="-lldap_r $EXTRA_LDAP_LIBS"
- else
- LDAP_LIBS_FE="-lldap $EXTRA_LDAP_LIBS"
- fi
- else
- AC_CHECK_LIB(wldap32, ldap_bind, [], [AC_MSG_ERROR([library 'wldap32' is required for LDAP])])
- LDAP_LIBS_FE="-lwldap32"
- LDAP_LIBS_BE="-lwldap32"
- fi
- LIBS="$_LIBS"
-fi
-AC_SUBST(LDAP_LIBS_FE)
-AC_SUBST(LDAP_LIBS_BE)
-
-
# This test makes sure that run tests work at all. Sometimes a shared
# library is found by the linker, but the runtime linker can't find it.
# This check should come after all modifications of compiler or linker
# variables, and before any other run tests.
AC_MSG_CHECKING([test program])
-AC_TRY_RUN([int main() { return 0; }],
+AC_RUN_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],
[AC_MSG_RESULT(ok)],
[AC_MSG_RESULT(failed)
AC_MSG_ERROR([[
dnl If we need to use "long long int", figure out whether nnnLL notation works.
if test x"$HAVE_LONG_LONG_INT_64" = xyes ; then
- AC_TRY_COMPILE([
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#define INT64CONST(x) x##LL
long long int foo = INT64CONST(0x1234567890123456);
-],
- [],
+])],
[AC_DEFINE(HAVE_LL_CONSTANTS, 1, [Define to 1 if constants of type 'long long int' should have the suffix LL.])],
[])
fi
AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
[#include <stdio.h>])
-# We also check for sig_atomic_t, which *should* be defined per ANSI
-# C, but is missing on some old platforms.
-AC_CHECK_TYPES(sig_atomic_t, [], [], [#include <signal.h>])
+# Check for extensions offering the integer scalar type __int128.
+PGAC_TYPE_128BIT_INT
# Check for various atomic operations now that we have checked how to declare
# 64bit integers.
PGAC_HAVE_GCC__ATOMIC_INT32_CAS
PGAC_HAVE_GCC__ATOMIC_INT64_CAS
-if test "$PORTNAME" != "win32"
-then
-PGAC_FUNC_POSIX_SIGNALS
-if test "$pgac_cv_func_posix_signals" != yes -a "$enable_thread_safety" = yes; then
- AC_MSG_ERROR([
-Thread-safety requires POSIX signals, which are not supported by this
-operating system; use --disable-thread-safety to disable thread safety.])
+
+# Check for x86 cpuid instruction
+AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid],
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>],
+ [[unsigned int exx[4] = {0, 0, 0, 0};
+ __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
+ ]])],
+ [pgac_cv__get_cpuid="yes"],
+ [pgac_cv__get_cpuid="no"])])
+if test x"$pgac_cv__get_cpuid" = x"yes"; then
+ AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.])
+fi
+
+AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid],
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>],
+ [[unsigned int exx[4] = {0, 0, 0, 0};
+ __get_cpuid(exx[0], 1);
+ ]])],
+ [pgac_cv__cpuid="yes"],
+ [pgac_cv__cpuid="no"])])
+if test x"$pgac_cv__cpuid" = x"yes"; then
+ AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.])
+fi
+
+# Check for Intel SSE 4.2 intrinsics to do CRC calculations.
+#
+# First check if the _mm_crc32_u8 and _mm_crc32_u64 intrinsics can be used
+# with the default compiler flags. If not, check if adding the -msse4.2
+# flag helps. CFLAGS_SSE42 is set to -msse4.2 if that's required.
+PGAC_SSE42_CRC32_INTRINSICS([])
+if test x"$pgac_sse42_crc32_intrinsics" != x"yes"; then
+ PGAC_SSE42_CRC32_INTRINSICS([-msse4.2])
+fi
+AC_SUBST(CFLAGS_SSE42)
+
+# Are we targeting a processor that supports SSE 4.2? gcc, clang and icc all
+# define __SSE4_2__ in that case.
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
+#ifndef __SSE4_2__
+#error __SSE4_2__ not defined
+#endif
+])], [SSE4_2_TARGETED=1])
+
+# Select CRC-32C implementation.
+#
+# If we are targeting a processor that has SSE 4.2 instructions, we can use the
+# special CRC instructions for calculating CRC-32C. If we're not targeting such
+# a processor, but we can nevertheless produce code that uses the SSE
+# intrinsics, perhaps with some extra CFLAGS, compile both implementations and
+# select which one to use at runtime, depending on whether SSE 4.2 is supported
+# by the processor we're running on.
+#
+# You can override this logic by setting the appropriate USE_*_CRC32 flag to 1
+# in the template or configure command line.
+if test x"$USE_SSE42_CRC32C" = x"" && test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"" && test x"$USE_SLICING_BY_8_CRC32C" = x""; then
+ if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then
+ USE_SSE42_CRC32C=1
+ else
+ # the CPUID instruction is needed for the runtime check.
+ if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && (test x"$pgac_cv__get_cpuid" = x"yes" || test x"$pgac_cv__cpuid" = x"yes"); then
+ USE_SSE42_CRC32C_WITH_RUNTIME_CHECK=1
+ else
+ # fall back to slicing-by-8 algorithm which doesn't require any special
+ # CPU support.
+ USE_SLICING_BY_8_CRC32C=1
+ fi
+ fi
fi
+
+# Set PG_CRC32C_OBJS appropriately depending on the selected implementation.
+AC_MSG_CHECKING([which CRC-32C implementation to use])
+if test x"$USE_SSE42_CRC32C" = x"1"; then
+ AC_DEFINE(USE_SSE42_CRC32C, 1, [Define to 1 use Intel SSE 4.2 CRC instructions.])
+ PG_CRC32C_OBJS="pg_crc32c_sse42.o"
+ AC_MSG_RESULT(SSE 4.2)
+else
+ if test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"1"; then
+ AC_DEFINE(USE_SSE42_CRC32C_WITH_RUNTIME_CHECK, 1, [Define to 1 to use Intel SSSE 4.2 CRC instructions with a runtime check.])
+ PG_CRC32C_OBJS="pg_crc32c_sse42.o pg_crc32c_sb8.o pg_crc32c_choose.o"
+ AC_MSG_RESULT(SSE 4.2 with runtime check)
+ else
+ AC_DEFINE(USE_SLICING_BY_8_CRC32C, 1, [Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check.])
+ PG_CRC32C_OBJS="pg_crc32c_sb8.o"
+ AC_MSG_RESULT(slicing-by-8)
+ fi
fi
+AC_SUBST(PG_CRC32C_OBJS)
# Select semaphore implementation type.
if test "$with_tcl" = yes; then
PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
- [TCL_INCLUDE_SPEC,TCL_LIB_FILE,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
+ [TCL_INCLUDE_SPEC,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
AC_SUBST(TCL_SHLIB_LD_LIBS)dnl don't want to double-evaluate that one
+ if test "$TCL_SHARED_BUILD" != 1; then
+ AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
+Use --without-tcl to disable building PL/Tcl.])
+ fi
# now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
ac_save_CPPFLAGS=$CPPFLAGS
CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
pgac_save_LIBS=$LIBS
LIBS="$perl_embed_ldflags"
AC_MSG_CHECKING([for libperl])
- AC_TRY_LINK([
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <EXTERN.h>
#include <perl.h>
-], [perl_alloc();],
+], [perl_alloc();])],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_MSG_ERROR([libperl library is required for Perl])])
_LIBS="$LIBS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS -DIN_CONFIGURE"
LIBS="$LIBS $PTHREAD_LIBS"
-AC_TRY_RUN([#include "$srcdir/src/test/thread/thread_test.c"],
+AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[#include "$srcdir/src/test/thread/thread_test.c"]])],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_MSG_ERROR([thread test program failed
tr '.' ' ' |
$AWK '{printf "%d%02d%02d", $1, $2, (NF >= 3) ? $3 : 0}'`"]
AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
+AC_SUBST(PG_VERSION_NUM)
# Begin output steps
projects / postgresql / blobdiff