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[apache] / configure.in
1 dnl
2 dnl Autoconf configuration for Apache httpd
3 dnl
4 dnl     Use ./buildconf to produce a configure script
5 dnl
6
7 AC_PREREQ(2.50)
8 AC_INIT(ABOUT_APACHE)
9
10 AC_CONFIG_HEADER(include/ap_config_auto.h)
11 AC_CONFIG_AUX_DIR(build)
12
13 dnl #
14 dnl # Include our own M4 macros along with those for APR and libtool
15 dnl #
16 sinclude(build/apr_common.m4)
17 sinclude(build/find_apr.m4)
18 sinclude(build/find_apu.m4)
19 sinclude(acinclude.m4)
20
21 dnl Later versions of autoconf (>= 2.62) by default cause the produced
22 dnl configure script to emit at least warnings when it comes across unknown
23 dnl command line options. These versions also have the macro
24 dnl AC_DISABLE_OPTION_CHECKING defined which turns this off by default.
25 dnl We want to have this turned off here since our configure calls can
26 dnl contain options for APR / APR-UTIL configure that are unknown to us.
27 dnl So avoid confusing the user by turning this off. See also PR 45221.
28 ifdef([AC_DISABLE_OPTION_CHECKING], [AC_DISABLE_OPTION_CHECKING])
29
30 dnl XXX we can't just use AC_PREFIX_DEFAULT because that isn't subbed in
31 dnl by configure until it is too late.  Is that how it should be or not?
32 dnl Something seems broken here.                                               
33 AC_PREFIX_DEFAULT(/usr/local/apache2)
34
35 dnl Get the layout here, so we can pass the required variables to apr
36 APR_ENABLE_LAYOUT(Apache, [errordir iconsdir htdocsdir cgidir])
37
38 dnl reparse the configure arguments.
39 APR_PARSE_ARGUMENTS
40
41 dnl export expanded and relative configure argument variables
42 APACHE_EXPORT_ARGUMENTS
43
44 dnl Save user-defined environment settings for later restoration
45 dnl
46 APR_SAVE_THE_ENVIRONMENT(CPPFLAGS)
47 APR_SAVE_THE_ENVIRONMENT(CFLAGS)
48 APR_SAVE_THE_ENVIRONMENT(CXXFLAGS)
49 APR_SAVE_THE_ENVIRONMENT(LDFLAGS)
50 APR_SAVE_THE_ENVIRONMENT(LIBS)
51 APR_SAVE_THE_ENVIRONMENT(INCLUDES)
52
53 dnl Generate ./config.nice for reproducing runs of configure
54 dnl
55 APR_CONFIG_NICE(config.nice)
56
57 nl='
58 '
59 dnl Check that mkdir -p works
60 APR_MKDIR_P_CHECK($top_srcdir/build/mkdir.sh)
61
62 dnl get an EGREP to use in the Makefiles
63 AC_PROG_EGREP
64 APACHE_SUBST(EGREP)
65
66 dnl ## Run configure for packages Apache uses
67
68 dnl shared library support for these packages doesn't currently
69 dnl work on some platforms
70
71 AC_CANONICAL_SYSTEM
72
73 orig_prefix="$prefix"
74
75 echo $ac_n "${nl}Configuring Apache Portable Runtime library ...${nl}"
76
77 AC_ARG_WITH(included-apr,
78 APACHE_HELP_STRING(--with-included-apr,Use bundled copies of APR/APR-Util))
79
80 if test "x$with_included_apr" = "xyes"; then
81    apr_found=reconfig
82 else 
83    APR_FIND_APR("$srcdir/srclib/apr", "./srclib/apr", 1, 1 2)
84 fi
85
86 if test "$apr_found" = "no"; then
87   AC_MSG_ERROR([APR not found.  Please read the documentation.])
88 fi
89
90 if test "$apr_found" = "reconfig"; then
91   APR_SUBDIR_CONFIG(srclib/apr,
92                     [$apache_apr_flags --prefix=$prefix --exec-prefix=$exec_prefix --libdir=$libdir --includedir=$includedir --bindir=$bindir --datadir=$datadir --with-installbuilddir=$installbuilddir],
93                     [--enable-layout=*|\'--enable-layout=*])
94   dnl We must be the first to build and the last to be cleaned
95 dnl  AP_BUILD_SRCLIB_DIRS="apr libapreq $AP_BUILD_SRCLIB_DIRS"
96 dnl  AP_CLEAN_SRCLIB_DIRS="$AP_CLEAN_SRCLIB_DIRS libapreq apr"
97   AP_BUILD_SRCLIB_DIRS="apr $AP_BUILD_SRCLIB_DIRS"
98   AP_CLEAN_SRCLIB_DIRS="$AP_CLEAN_SRCLIB_DIRS apr"
99
100   dnl We have to find apr-N-config when we reconfigure APR.
101   for majorver in 1 2; do
102     test_apr_config="./srclib/apr/apr-${majorver}-config"
103     if test -f "$test_apr_config"; then
104       apr_config="$test_apr_config"
105     fi
106   done
107 fi
108
109 APR_SETIFNULL(CC, `$apr_config --cc`)
110 APR_SETIFNULL(CPP, `$apr_config --cpp`)
111 APR_ADDTO(CFLAGS, `$apr_config --cflags`)
112 APR_ADDTO(CPPFLAGS, `$apr_config --cppflags`)
113 dnl internal-only CPPFLAGS (shouldn't affect third-party module builds)
114 INTERNAL_CPPFLAGS=""
115 APR_ADDTO(LDFLAGS, `$apr_config --ldflags`)
116 SHLIBPATH_VAR=`$apr_config --shlib-path-var`
117 APR_BINDIR=`$apr_config --bindir`
118 APR_INCLUDEDIR=`$apr_config --includedir`
119 APR_INCLUDES=`$apr_config --includes`
120 APR_VERSION=`$apr_config --version`
121 apr_major_version=`echo ${APR_VERSION} | sed 's,\..*,,'`
122 APR_CONFIG="$APR_BINDIR/apr-${apr_major_version}-config"
123
124 dnl echo $ac_n "${nl}Configuring Apache Request Library...${nl}"
125 dnl APR_SUBDIR_CONFIG(srclib/libapreq, [--with-apr=../apr/apr-2-config --prefix=$prefix --exec-prefix=$exec_prefix --libdir=$libdir --includedir=$includedir --bindir=$bindir --datadir=$datadir --with-installbuilddir=$installbuilddir])
126 dnl APR_ADDTO(INCLUDES, [-I\$(top_srcdir)/srclib/libapreq/include])
127
128 echo $ac_n "${nl}Configuring Apache Portable Runtime Utility library...${nl}"
129
130 if test "x${apr_major_version}" = "x2"; then
131    apu_found=obsolete
132 elif test "x$with_included_apr" = "xyes"; then
133    apu_found=reconfig
134 else 
135    dnl If httpd is buildconf'ed against an apr 2.x tree, then 1.x
136    dnl isn't supported. 
137    ifdef([APR_FIND_APU], [
138      APR_FIND_APU("$srcdir/srclib/apr-util", "./srclib/apr-util", 
139                   1, ${apr_major_version})
140    ], [apu_found=no])
141 fi
142
143 if test "$apu_found" = "no"; then
144   AC_MSG_ERROR([APR-util not found.  Please read the documentation.])
145 fi
146
147 # Catch some misconfigurations:
148 case ${apr_found}.${apu_found} in
149 reconfig.yes)
150   AC_MSG_ERROR([Cannot use an external APR-util with the bundled APR])
151   ;;
152 yes.reconfig)
153   AC_MSG_ERROR([Cannot use an external APR with the bundled APR-util])
154   ;;
155 esac  
156
157 if test "$apu_found" = "reconfig"; then
158   APR_SUBDIR_CONFIG(srclib/apr-util,
159                     [--with-apr=../apr --prefix=$prefix --exec-prefix=$exec_prefix --libdir=$libdir --includedir=$includedir --bindir=$bindir],
160                     [--enable-layout=*|\'--enable-layout=*])
161   dnl We must be the last to build and the first to be cleaned
162   AP_BUILD_SRCLIB_DIRS="$AP_BUILD_SRCLIB_DIRS apr-util"
163   AP_CLEAN_SRCLIB_DIRS="apr-util $AP_CLEAN_SRCLIB_DIRS"
164   dnl APR and APR-Util major versions must match
165   apu_config="./srclib/apr-util/apu-${apr_major_version}-config"
166 fi
167
168 if test "$apu_found" = "obsolete"; then
169   AC_MSG_NOTICE([APR-util obsoleted, woohoo])
170 else
171   APR_ADDTO(LDFLAGS, `$apu_config --ldflags`)
172   APU_BINDIR=`$apu_config --bindir`
173   APU_INCLUDEDIR=`$apu_config --includedir`
174   APU_INCLUDES=`$apu_config --includes`
175   APU_VERSION=`$apu_config --version`
176   APU_CONFIG="$APU_BINDIR/apu-`echo ${APU_VERSION} | sed 's,\..*,,'`-config"
177 fi
178
179 dnl In case we picked up CC and CPP from APR, get that info into the
180 dnl config cache so that PCRE uses it.  Otherwise, CC and CPP used for
181 dnl PCRE and for our config tests will be whatever PCRE determines.
182 AC_PROG_CC
183 AC_PROG_CPP
184
185 dnl Try to get c99 support for variadic macros
186 ifdef([AC_PROG_CC_C99], [AC_PROG_CC_C99])
187
188 if test "x${cache_file}" = "x/dev/null"; then
189   # Likewise, ensure that CC and CPP are passed through to the pcre
190   # configure script iff caching is disabled (the autoconf 2.5x default).
191   export CC; export CPP
192 fi
193
194 dnl Absolute source/build directory
195 abs_srcdir=`(cd $srcdir && pwd)`
196 abs_builddir=`pwd`
197
198 AC_ARG_WITH(pcre,
199 APACHE_HELP_STRING(--with-pcre=PATH,Use external PCRE library))
200
201 AC_PATH_PROG(PCRE_CONFIG, pcre-config, false)
202 if test -d "$with_pcre" && test -x "$with_pcre/bin/pcre-config"; then
203    PCRE_CONFIG=$with_pcre/bin/pcre-config
204 elif test -x "$with_pcre"; then
205    PCRE_CONFIG=$with_pcre
206 fi
207
208 if test "$PCRE_CONFIG" != "false"; then
209   if $PCRE_CONFIG --version >/dev/null 2>&1; then :; else
210     AC_MSG_ERROR([Did not find pcre-config script at $PCRE_CONFIG])
211   fi
212   AC_MSG_NOTICE([Using external PCRE library from $PCRE_CONFIG])
213   APR_ADDTO(PCRE_INCLUDES, [`$PCRE_CONFIG --cflags`])
214   APR_ADDTO(PCRE_LIBS, [`$PCRE_CONFIG --libs`])
215 else
216   AC_MSG_ERROR([pcre-config for libpcre not found. PCRE is required and available from http://pcre.org/])
217 fi
218 APACHE_SUBST(PCRE_LIBS)
219
220 echo $ac_n "${nl}Configuring Apache httpd ...${nl}"
221
222 dnl If the source dir is not equal to the build dir, 
223 dnl then we are running in VPATH mode.
224
225 APR_ADDTO(INCLUDES, [-I.])
226
227 if test "$abs_builddir" != "$abs_srcdir"; then
228   APR_ADDTO(INCLUDES, [-I\$(top_builddir)/include])
229 fi
230
231 APR_ADDTO(INCLUDES, [-I\$(top_srcdir)/os/\$(OS_DIR) -I\$(top_srcdir)/include])
232
233 # apr/apr-util --includes may pick up system paths for dependent
234 # libraries, so ensure these are later in INCLUDES than local source
235 # directories.
236 APR_ADDTO(INCLUDES, $APR_INCLUDES)
237 APR_ADDTO(INCLUDES, $APU_INCLUDES)
238
239 dnl Add in path to PCRE includes
240 APR_ADDTO(INCLUDES, $PCRE_INCLUDES)
241
242 echo $ac_n "${nl}Applying OS-specific hints for httpd ...${nl}"
243
244 case $host in
245   *os2*)
246       # Use a custom made libtool replacement
247       echo "using aplibtool"
248       LIBTOOL="$abs_srcdir/srclib/apr/build/aplibtool"
249       SH_LIBTOOL="$LIBTOOL --shared --export-all"
250       SH_LIBS="\$(ALL_LIBS)"
251       CORE_IMPLIB_FILE="ApacheCoreOS2.la"
252       CORE_IMPLIB="$abs_srcdir/server/$CORE_IMPLIB_FILE"
253       MK_IMPLIB="emximp"
254       other_targets="$other_targets os2core"
255       INSTALL_PROG_FLAGS="-e .exe"
256       SHLTCFLAGS=""
257       LTCFLAGS=""
258       ;;
259   *)
260       if test "x$LTFLAGS" = "x"; then
261           LTFLAGS='--silent'
262       fi
263       my_libtool=`$apr_config --apr-libtool`
264       LIBTOOL="$my_libtool \$(LTFLAGS)"
265       libtoolversion=`$my_libtool --version`
266       case $libtoolversion in
267           *1.[[45]]* | *[[2-9]].[[0-9]]*)
268               SH_LIBTOOL='$(LIBTOOL)'
269               SHLTCFLAGS="-prefer-pic"
270               LTCFLAGS="-prefer-non-pic -static"
271               ;;
272           *)
273               SH_LIBTOOL='$(SHELL) $(top_builddir)/shlibtool $(LTFLAGS)'
274               SHLTCFLAGS=""
275               LTCFLAGS=""
276               ;;
277       esac
278       ;;
279 esac
280 APACHE_SUBST(SHLTCFLAGS)
281 APACHE_SUBST(LTCFLAGS)
282
283 case $host in
284   *-apple-aux3*)
285       APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
286       ;;
287   *os2-emx*)
288       APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
289       ;;
290   *-linux-*)
291       case `uname -r` in
292         2.[[2-9]]* ) 
293             APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
294             ;;
295         * )
296             ;;
297       esac
298       ;;
299   *486-*-bsdi* | *-netbsd* | *-freebsd* | *-apple-darwin* | *-dec-osf* | *-qnx)
300       APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
301       ;;
302   *-solaris2*)
303       dnl This is a hack -- we should be using AC_TRY_RUN instead
304       ap_platform_runtime_link_flag="-R"
305       dnl solaris 8 and above don't have a thundering herd
306       dnl not sure about rev's before this one.
307       case `uname -r` in
308         5.[567]*)
309             ;;
310         * )
311             APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
312             ;;
313       esac
314       ;;
315   *cygwin*)
316       APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
317       ;;
318   *mingw32*)
319       APR_ADDTO(INTERNAL_CPPFLAGS, [-DAP_DECLARE_EXPORT])
320       APR_SETIFNULL(ac_cv_func_times, [no])
321       APR_SETIFNULL(ac_cv_func_getpwnam, [no])
322       APR_SETIFNULL(ac_cv_func_getgrnam, [no])
323       ;;
324   *aix*)
325       aixver=`echo $host | sed 's/^[[^0-9]]*//' | sed 's/\.//g'`
326       if test $aixver -ge 4320; then
327         APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
328       fi
329       ;;
330   *os390*)
331       APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
332       ;;
333 esac
334
335 APR_SETVAR(AP_NONBLOCK_WHEN_MULTI_LISTEN, [1])
336
337 dnl
338 dnl Process command line arguments. This is done early in the process so the
339 dnl user can get feedback quickly in case of an error.
340 dnl
341 dnl ### need to move some of the arguments "up here"
342
343 dnl ## Check for programs
344
345 AC_PATH_PROG(RM, rm)
346 AC_PATH_PROG(PKGCONFIG, pkg-config)
347 AC_PATH_PROG(RSYNC, rsync)
348 AC_PROG_AWK
349 AC_PROG_LN_S
350 AC_CHECK_TOOL(RANLIB, ranlib, true)
351 dnl AC_PATH_PROG(PERL_PATH, perl)
352 AC_CHECK_PROGS(LYNX_PATH,[lynx links elinks], [lynx])
353
354 # Hard-coded install programs
355 MKINSTALLDIRS="\$(abs_srcdir)/build/mkdir.sh"
356 INSTALL="\$(LIBTOOL) --mode=install \$(abs_srcdir)/build/install.sh -c"
357 APACHE_SUBST(MKINSTALLDIRS)
358 APACHE_SUBST(INSTALL)
359
360 dnl Various OS checks that apparently set required flags
361 ifdef([AC_USE_SYSTEM_EXTENSIONS], [
362 AC_USE_SYSTEM_EXTENSIONS
363 ], [
364 AC_AIX
365 AC_MINIX
366 ])
367
368 AC_ISC_POSIX
369
370 # Ensure that satisfactory versions of apr and apr-util are 
371 # found if external copies are configured.
372 if test "${apr_found}" = "yes"; then
373   # Require at least APR 1.3.x otherwise fail
374   APACHE_CHECK_APxVER([apr], 1, 3)
375 fi
376
377 if test "${apu_found}" = "yes"; then
378   # Require at least APR-util 1.3.x otherwise fail
379   if test "${apr_found}" = "yes"; then
380     # we need to add the APR includes to CPPFLAGS
381     apu_ckver_CPPFLAGS="$CPPFLAGS"
382     CPPFLAGS="$CPPFLAGS `$apr_config --includes`"
383     APACHE_CHECK_APxVER([apu], 1, 3)
384     CPPFLAGS="$apu_ckver_CPPFLAGS"
385   else
386     APACHE_CHECK_APxVER([apu], 1, 3)
387   fi
388 fi
389
390 dnl Check for what we can generate dependency files with
391 APR_CHECK_DEPEND
392
393 dnl ## Check for libraries
394
395 dnl ## Check for header files
396
397 dnl I think these are just used all over the place, so just check for
398 dnl them at the base of the tree. If some are specific to a single
399 dnl directory, they should be moved (Comment #Spoon)
400
401 dnl Regarding standard header files: AC_HEADER_STDC doesn't set symbols
402 dnl HAVE_STRING_H, HAVE_STDLIB_H, etc., so those are checked for
403 dnl explicitly so that the normal HAVE_xxx_H symbol is defined.
404
405 AC_HEADER_STDC
406 AC_CHECK_HEADERS( \
407 string.h \
408 limits.h \
409 unistd.h \
410 sys/socket.h \
411 pwd.h \
412 grp.h \
413 strings.h \
414 sys/prctl.h \
415 sys/processor.h \
416 sys/sem.h \
417 sys/sdt.h
418 )
419 AC_HEADER_SYS_WAIT
420
421 dnl ## Check for typedefs, structures, and compiler characteristics.
422
423 AC_C_CONST
424
425 dnl ## Check for library functions
426 dnl ## sqrt() only needed in support/ab.c
427 saved_LIBS="$LIBS"
428 LIBS=""
429 AC_SEARCH_LIBS(sqrt, m)
430 MATH_LIBS="$LIBS"
431 APACHE_SUBST(MATH_LIBS)
432 LIBS="$saved_LIBS"
433
434 saved_LIBS="$LIBS"
435 LIBS=""
436 AC_SEARCH_LIBS(crypt, crypt)
437 CRYPT_LIBS="$LIBS"
438 APACHE_SUBST(CRYPT_LIBS)
439 LIBS="$saved_LIBS"
440
441 dnl See Comment #Spoon
442
443 AC_CHECK_FUNCS( \
444 getpwnam \
445 getgrnam \
446 initgroups \
447 bindprocessor \
448 prctl \
449 timegm \
450 getpgid \
451 fopen64
452 )
453
454 dnl confirm that a void pointer is large enough to store a long integer
455 APACHE_CHECK_VOID_PTR_LEN
456
457 AC_CACHE_CHECK([for gettid()], ac_cv_gettid,
458 [AC_TRY_RUN(#define _GNU_SOURCE
459 #include <unistd.h>
460 #include <sys/syscall.h>
461 #include <sys/types.h>
462 int main(int argc, char **argv) {
463 pid_t t = syscall(SYS_gettid); return t == -1 ? 1 : 0; },
464 [ac_cv_gettid=yes], [ac_cv_gettid=no], [ac_cv_gettid=no])])
465 if test "$ac_cv_gettid" = "yes"; then
466     AC_DEFINE(HAVE_GETTID, 1, [Define if you have gettid()])
467 fi
468
469 dnl ## Check for the tm_gmtoff field in struct tm to get the timezone diffs
470 AC_CACHE_CHECK([for tm_gmtoff in struct tm], ac_cv_struct_tm_gmtoff,
471 [AC_TRY_COMPILE([#include <sys/types.h>
472 #include <time.h>], [struct tm tm; tm.tm_gmtoff;],
473   ac_cv_struct_tm_gmtoff=yes, ac_cv_struct_tm_gmtoff=no)])
474 if test "$ac_cv_struct_tm_gmtoff" = "yes"; then
475     AC_DEFINE(HAVE_GMTOFF, 1, [Define if struct tm has a tm_gmtoff field])
476 fi
477
478 dnl ## Set up any appropriate OS-specific environment variables for apachectl
479
480 case $host in
481     *aix*)
482         # for 32-bit builds, increase MAXDATA to allow lots of threads
483         if test x$OBJECT_MODE != x64; then
484             OS_SPECIFIC_VARS="LDR_CNTRL=\"MAXDATA=0x80000000\" ; export LDR_CNTRL ;"
485         fi
486         OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS AIXTHREAD_SCOPE=S ; export AIXTHREAD_SCOPE"
487         OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; AIXTHREAD_MUTEX_DEBUG=OFF ; export AIXTHREAD_MUTEX_DEBUG"
488         OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; AIXTHREAD_RWLOCK_DEBUG=OFF ; export AIXTHREAD_RWLOCK_DEBUG"
489         OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; AIXTHREAD_COND_DEBUG=OFF ; export AIXTHREAD_COND_DEBUG"
490         OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; SPINLOOPTIME=1000 ; export SPINLOOPTIME"
491         OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; YIELDLOOPTIME=8 ; export YIELDLOOPTIME"
492         OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; MALLOCMULTIHEAP=considersize,heaps:8 ; export MALLOCMULTIHEAP"
493         ;;
494     *os390*)
495         OS_SPECIFIC_VARS="export _CEE_RUNOPTS=\"STACK(,,ANY)\" ; export _EDC_ADD_ERRNO2=1"
496         ;;
497     *)
498         OS_SPECIFIC_VARS=""
499 esac
500       
501 AC_ARG_WITH(port,APACHE_HELP_STRING(--with-port=PORT,Port on which to listen (default is 80)),
502         [if test "$withval" = "yes"; then AC_MSG_ERROR('option --with-port requires a value (the TCP port number)'); else PORT="$withval"; fi],
503         [PORT=80])
504
505 AC_ARG_WITH(sslport,APACHE_HELP_STRING(--with-sslport=SSLPORT,Port on which to securelisten (default is 443)),
506         [if test "$withval" = "yes"; then AC_MSG_ERROR('option --with-sslport requires a value (the SSL TCP port number)'); else SSLPORT="$withval"; fi],
507         [SSLPORT=443])
508
509 DTRACE=true
510 AC_ARG_ENABLE(dtrace,APACHE_HELP_STRING(--enable-dtrace,Enable DTrace probes),
511 [
512   enable_dtrace=$enableval
513   APR_ADDTO(CPPFLAGS, -DAPR_DTRACE_PROVIDER)
514   AC_MSG_ERROR('DTrace Support in the build system is not complete. Patches Welcome!')
515 ],
516 [
517   enable_dtrace=no
518 ])
519
520 dnl Disabled dtrace build for now.
521 enable_dtrace=no
522
523 case $host in
524   *-solaris2*)
525     if test $enable_dtrace = "yes" -a "$ac_cv_header_sys_sdt_h" = "yes"; then
526         AC_DEFINE(AP_ENABLE_DTRACE, 1,
527                   [Enable DTrace probes])
528         DTRACE="/usr/sbin/dtrace $DTRACEFLAGS"
529         test -f include/apache_probes.h || $DTRACE -h -s apache_probes.d -o include/apache_probes.h
530     fi
531     ;;
532 esac
533
534 APACHE_SUBST(DTRACE)
535
536 AC_ARG_ENABLE(hook-probes,APACHE_HELP_STRING(--enable-hook-probes,Enable APR hook probes),
537 [
538     AC_DEFINE(AP_HOOK_PROBES_ENABLED, 1,
539         [Enable the APR hook probes capability, reading from ap_hook_probes.h])
540     APR_ADDTO(INTERNAL_CPPFLAGS, -DAP_HOOK_PROBES_ENABLED)
541 ])dnl
542
543 AC_ARG_ENABLE(exception-hook,APACHE_HELP_STRING(--enable-exception-hook,Enable fatal exception hook),
544 [
545     AC_DEFINE(AP_ENABLE_EXCEPTION_HOOK, 1,
546               [Allow modules to run hook after a fatal exception])
547 ])dnl
548
549 AC_ARG_ENABLE(maintainer-mode,APACHE_HELP_STRING(--enable-maintainer-mode,Turn on debugging and compile time warnings),
550 [
551   APR_ADDTO(CPPFLAGS, -DAP_DEBUG)
552   if test "$GCC" = "yes"; then
553     APR_ADDTO(CFLAGS,[-Wall -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -Wpointer-arith])
554     APACHE_ADD_GCC_CFLAG([-Wdeclaration-after-statement])
555     APACHE_ADD_GCC_CFLAG([-Werror=declaration-after-statement])
556     APACHE_ADD_GCC_CFLAG([-Wformat])
557     APACHE_ADD_GCC_CFLAG([-Wformat-security])
558     APACHE_ADD_GCC_CFLAG([-Werror=format-security])
559   elif test "$AIX_XLC" = "yes"; then
560     APR_ADDTO(CFLAGS,-qfullpath -qinitauto=FE -qcheck=all -qinfo=pro)
561   fi
562 ])dnl
563
564 AC_ARG_ENABLE(debugger-mode,APACHE_HELP_STRING(--enable-debugger-mode,Turn on debugging and compile time warnings and turn off optimization),
565 [
566   APR_ADDTO(CPPFLAGS, -DAP_DEBUG)
567   if test "$GCC" = "yes"; then
568     APR_ADDTO(CFLAGS,[-Wall -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -Wpointer-arith -O0])
569     APACHE_ADD_GCC_CFLAG([-Wdeclaration-after-statement])
570     APACHE_ADD_GCC_CFLAG([-Werror=declaration-after-statement])
571     APACHE_ADD_GCC_CFLAG([-Wformat])
572     APACHE_ADD_GCC_CFLAG([-Wformat-security])
573     APACHE_ADD_GCC_CFLAG([-Werror=format-security])
574   elif test "$AIX_XLC" = "yes"; then
575     APR_ADDTO(CFLAGS,-qfullpath -qinitauto=FE -qcheck=all -qinfo=pro)
576   fi
577 ])dnl
578
579 dnl Conditionally enable PIE support for GNU toolchains.
580 AC_ARG_ENABLE(pie,APACHE_HELP_STRING(--enable-pie,Build httpd as a Position Independent Executable))
581 if test "$enable_pie" = "yes"; then
582    AC_CACHE_CHECK([whether $CC accepts PIE flags], [ap_cv_cc_pie], [
583      save_CFLAGS=$CFLAGS
584      save_LDFLAGS=$LDFLAGS
585      CFLAGS="$CFLAGS -fPIE"
586      LDFLAGS="$LDFLAGS -pie"
587      AC_TRY_RUN([static int foo[30000]; int main () { return 0; }],
588       [ap_cv_cc_pie=yes], [ap_cv_cc_pie=no], [ap_cv_cc_pie=yes])
589      CFLAGS=$save_CFLAGS
590      LDFLAGS=$save_LDFLAGS
591    ])
592    if test "$ap_cv_cc_pie" = "yes"; then
593      PICFLAGS="-fPIE"
594      PILDFLAGS="-pie"
595    else
596      AC_ERROR([--enable-pie requested but $CC failed using PIE flags])
597    fi
598 fi
599 AC_SUBST(PICFLAGS)
600 AC_SUBST(PILDFLAGS)
601
602 prefix="$orig_prefix"
603 APACHE_ENABLE_MODULES
604
605 dnl reading config stubs
606 esyscmd(./build/config-stubs .)
607
608 APACHE_SUBST(progname)
609 APACHE_SUBST(OS)
610 APACHE_SUBST(OS_DIR)
611 APACHE_SUBST(BUILTIN_LIBS)
612 APACHE_SUBST(SHLIBPATH_VAR)
613 APACHE_SUBST(OS_SPECIFIC_VARS)
614
615 PRE_SHARED_CMDS='echo ""'
616 POST_SHARED_CMDS='echo ""'
617
618 dnl apache_need_shared tells us if Apache modules are being built as DSOs
619
620 if test "$apache_need_shared" = "yes"; then
621   if test -f $ac_aux_dir/ltconfig; then
622     $SHELL $ac_aux_dir/ltconfig --output=shlibtool --disable-static --srcdir=$ac_aux_dir --cache-file=./config.cache $ac_aux_dir/ltmain.sh
623   fi
624   shared_build="shared-build"
625 fi
626
627 dnl enable_so tells us if *any* modules can be built as DSOs
628
629 if test "$enable_so" = "yes" -o "$enable_so" = "static"; then
630   case $host in
631     *-ibm-aix*)
632       APR_ADDTO(HTTPD_LDFLAGS, [-Wl,-uXML_Parse -Wl,-bE:$abs_builddir/server/httpd.exp])
633       APR_ADDTO(SH_LDFLAGS, [\$(EXTRA_LDFLAGS) \$(EXTRA_LIBS)])
634       APR_ADDTO(UTIL_LDFLAGS, [-Wl,-uXML_Parse])
635       ;;
636     *os390)
637       APR_ADDTO(HTTPD_LDFLAGS, [--main=$abs_srcdir/server/main.o --core-dll=$abs_srcdir/apachecore.dll])
638       APR_ADDTO(SH_LDFLAGS, [--core-dll=$abs_srcdir/apachecore.dll])
639   esac
640   MOD_SO_ENABLED=yes
641 fi
642 AC_SUBST(MOD_SO_ENABLED)
643
644 APACHE_SUBST(PRE_SHARED_CMDS)
645 APACHE_SUBST(POST_SHARED_CMDS)
646 APACHE_SUBST(shared_build)
647
648 AC_ARG_WITH(program-name,
649 APACHE_HELP_STRING(--with-program-name,alternate executable name),[
650   progname="$withval" ], [
651   progname="httpd"] )
652
653 # SuExec parameters
654 AC_ARG_WITH(suexec-bin,
655 APACHE_HELP_STRING(--with-suexec-bin,Path to suexec binary),[
656   AC_DEFINE_UNQUOTED(SUEXEC_BIN, "$withval", [Path to suexec binary] )
657 ] )
658
659 AC_ARG_WITH(suexec-caller,
660 APACHE_HELP_STRING(--with-suexec-caller,User allowed to call SuExec),[
661   AC_DEFINE_UNQUOTED(AP_HTTPD_USER, "$withval", [User allowed to call SuExec] ) ] )
662
663 AC_ARG_WITH(suexec-userdir,
664 APACHE_HELP_STRING(--with-suexec-userdir,User subdirectory),[
665   AC_DEFINE_UNQUOTED(AP_USERDIR_SUFFIX, "$withval", [User subdirectory] ) ] )
666
667 AC_ARG_WITH(suexec-docroot,
668 APACHE_HELP_STRING(--with-suexec-docroot,SuExec root directory),[
669   AC_DEFINE_UNQUOTED(AP_DOC_ROOT, "$withval", [SuExec root directory] ) ] )
670
671 AC_ARG_WITH(suexec-uidmin,
672 APACHE_HELP_STRING(--with-suexec-uidmin,Minimal allowed UID),[
673   AC_DEFINE_UNQUOTED(AP_UID_MIN, $withval, [Minimum allowed UID] ) ] )
674
675 AC_ARG_WITH(suexec-gidmin,
676 APACHE_HELP_STRING(--with-suexec-gidmin,Minimal allowed GID),[
677   AC_DEFINE_UNQUOTED(AP_GID_MIN, $withval, [Minimum allowed GID] ) ] )
678
679 AC_ARG_WITH(suexec-logfile,
680 APACHE_HELP_STRING(--with-suexec-logfile,Set the logfile),[
681   AC_DEFINE_UNQUOTED(AP_LOG_EXEC, "$withval", [SuExec log file] ) ] )
682
683 AC_ARG_WITH(suexec-safepath,
684 APACHE_HELP_STRING(--with-suexec-safepath,Set the safepath),[
685   AC_DEFINE_UNQUOTED(AP_SAFE_PATH, "$withval", [safe shell path for SuExec] ) ] )
686
687 AC_ARG_WITH(suexec-umask,
688 APACHE_HELP_STRING(--with-suexec-umask,umask for suexec'd process),[
689   AC_DEFINE_UNQUOTED(AP_SUEXEC_UMASK, 0$withval, [umask for suexec'd process] ) ] )
690
691 dnl APR should go after the other libs, so the right symbols can be picked up
692 if test x${apu_found} != xobsolete; then
693   AP_LIBS="$AP_LIBS `$apu_config --avoid-ldap --link-libtool --libs`"
694 fi
695 AP_LIBS="$AP_LIBS `$apr_config --link-libtool --libs`" 
696 APACHE_SUBST(AP_LIBS)
697 APACHE_SUBST(AP_BUILD_SRCLIB_DIRS)
698 APACHE_SUBST(AP_CLEAN_SRCLIB_DIRS)
699
700 AC_DEFINE(AP_USING_AUTOCONF, 1,
701                 [Using autoconf to configure Apache])
702
703 if test "$SINGLE_LISTEN_UNSERIALIZED_ACCEPT" = "1"; then
704     AC_DEFINE(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, 1, 
705               [This platform doesn't suffer from the thundering herd problem])
706 fi
707
708 if test "$AP_NONBLOCK_WHEN_MULTI_LISTEN" = "1"; then
709     AC_DEFINE(AP_NONBLOCK_WHEN_MULTI_LISTEN, 1, 
710               [Listening sockets are non-blocking when there are more than 1])
711 fi
712
713 APR_CHECK_APR_DEFINE(APR_HAVE_IPV6)
714
715 AC_ARG_ENABLE(v4-mapped,APACHE_HELP_STRING(--enable-v4-mapped,Allow IPv6 sockets to handle IPv4 connections),
716
717   v4mapped=$enableval
718 ],
719 [
720     case $host in
721     *freebsd5*|*netbsd*|*openbsd*)
722         v4mapped=no
723         ;;
724     *)
725         v4mapped=yes
726         ;;
727     esac
728     if ap_mpm_is_enabled winnt; then
729         dnl WinNT MPM doesn't support this.
730         v4mapped=no
731     fi
732 ])
733
734 if test $v4mapped = "yes" -a $ac_cv_define_APR_HAVE_IPV6 = "yes"; then
735     AC_DEFINE(AP_ENABLE_V4_MAPPED, 1,
736               [Allow IPv4 connections on IPv6 listening sockets])
737 fi
738
739 AC_ARG_ENABLE(load-all-modules,APACHE_HELP_STRING(--enable-load-all-modules,Load all modules),
740
741   LOAD_ALL_MODULES=$enableval
742 ],
743 [
744   LOAD_ALL_MODULES="no"
745 ])
746
747 APACHE_FAST_OUTPUT(Makefile modules/Makefile srclib/Makefile) 
748 APACHE_FAST_OUTPUT(os/Makefile server/Makefile)
749 APACHE_FAST_OUTPUT(support/Makefile)
750
751 if test -d ./test; then
752     APACHE_FAST_OUTPUT(test/Makefile)
753 fi
754
755 dnl ## Finalize the variables
756 echo $ac_n "${nl}Restore user-defined environment settings...${nl}"
757
758 APR_RESTORE_THE_ENVIRONMENT(CPPFLAGS, EXTRA_)
759 APR_RESTORE_THE_ENVIRONMENT(CFLAGS, EXTRA_)
760 APR_RESTORE_THE_ENVIRONMENT(CXXFLAGS, EXTRA_)
761 APR_RESTORE_THE_ENVIRONMENT(LDFLAGS, EXTRA_)
762 APR_RESTORE_THE_ENVIRONMENT(LIBS, EXTRA_)
763 APR_RESTORE_THE_ENVIRONMENT(INCLUDES, EXTRA_)
764
765 echo $ac_n "${nl}Construct makefiles and header files...${nl}"
766
767 APACHE_GEN_CONFIG_VARS
768
769 dnl ## Build modules.c
770 rm -f modules.c
771 echo $MODLIST | $AWK -f $srcdir/build/build-modules-c.awk > modules.c
772
773 APR_EXPAND_VAR(ap_prefix, $prefix)
774 AC_DEFINE_UNQUOTED(HTTPD_ROOT, "${ap_prefix}",
775         [Root directory of the Apache install area])
776 AC_DEFINE_UNQUOTED(SERVER_CONFIG_FILE, "${rel_sysconfdir}/${progname}.conf",
777         [Location of the config file, relative to the Apache root directory])
778 AC_DEFINE_UNQUOTED(AP_TYPES_CONFIG_FILE, "${rel_sysconfdir}/mime.types",
779         [Location of the MIME types config file, relative to the Apache root directory])
780
781 perlbin=`$ac_aux_dir/PrintPath perl`
782 if test "x$perlbin" = "x"; then
783     perlbin="/replace/with/path/to/perl/interpreter"
784 fi
785 AC_SUBST(perlbin)
786
787 dnl If we are running on BSD/OS, we need to use the BSD .include syntax.
788
789 BSD_MAKEFILE=no
790 ap_make_include=include
791 ap_make_delimiter=' '
792 case $host in
793 *bsdi*)
794     # Check whether they've installed GNU make
795     if make --version > /dev/null 2>&1; then
796         true
797     else
798         BSD_MAKEFILE=yes
799         ap_make_include=.include
800         ap_make_delimiter='"'
801     fi
802     ;;
803 esac
804 AC_SUBST(ap_make_include)
805 AC_SUBST(ap_make_delimiter)
806
807 dnl Ensure that docs/conf is created.
808 test -d docs/conf||$mkdir_p docs/conf
809
810 dnl Ensure that the httpd version is included
811 HTTPD_VERSION=`$abs_srcdir/build/get-version.sh all $abs_srcdir/include/ap_release.h AP_SERVER`
812 AC_SUBST(HTTPD_VERSION)
813
814 AC_OUTPUT($APACHE_OUTPUT_FILES docs/conf/httpd.conf docs/conf/extra/httpd-autoindex.conf docs/conf/extra/httpd-dav.conf docs/conf/extra/httpd-default.conf docs/conf/extra/httpd-info.conf docs/conf/extra/httpd-languages.conf docs/conf/extra/httpd-manual.conf docs/conf/extra/httpd-mpm.conf docs/conf/extra/httpd-multilang-errordoc.conf docs/conf/extra/httpd-ssl.conf docs/conf/extra/httpd-userdir.conf docs/conf/extra/httpd-vhosts.conf docs/conf/extra/proxy-html.conf include/ap_config_layout.h support/apxs support/apachectl support/dbmmanage support/envvars-std support/log_server_status support/logresolve.pl support/phf_abuse_log.cgi support/split-logfile build/rules.mk build/pkg/pkginfo build/config_vars.sh,[true],[
815   APACHE_GEN_MAKEFILES
816 ])