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