dnl AC_HELP_STRING, so let's try to call it if we can.
dnl Note: this define must be on one line so that it can be properly returned
dnl as the help string.
-AC_DEFUN(APACHE_HELP_STRING,[ifelse(regexp(AC_ACVERSION, 2\.1), -1, AC_HELP_STRING($1,$2),[ ]$1 substr([ ],len($1))$2)])dnl
+AC_DEFUN([APACHE_HELP_STRING],[ifelse(regexp(AC_ACVERSION, 2\.1), -1, AC_HELP_STRING($1,$2),[ ]$1 substr([ ],len($1))$2)])dnl
dnl APACHE_SUBST(VARIABLE)
dnl Makes VARIABLE available in generated files
dnl (do not use @variable@ in Makefiles, but $(variable))
-AC_DEFUN(APACHE_SUBST,[
+AC_DEFUN([APACHE_SUBST],[
APACHE_VAR_SUBST="$APACHE_VAR_SUBST $1"
AC_SUBST($1)
])
dnl APACHE_FAST_OUTPUT(FILENAME)
dnl Perform substitutions on FILENAME (Makefiles only)
-AC_DEFUN(APACHE_FAST_OUTPUT,[
+AC_DEFUN([APACHE_FAST_OUTPUT],[
APACHE_FAST_OUTPUT_FILES="$APACHE_FAST_OUTPUT_FILES $1"
])
dnl APACHE_GEN_CONFIG_VARS
dnl Creates config_vars.mk
-AC_DEFUN(APACHE_GEN_CONFIG_VARS,[
+AC_DEFUN([APACHE_GEN_CONFIG_VARS],[
+ APACHE_SUBST(HTTPD_VERSION)
+ APACHE_SUBST(HTTPD_MMN)
APACHE_SUBST(abs_srcdir)
APACHE_SUBST(bindir)
APACHE_SUBST(sbindir)
APACHE_SUBST(MK_IMPLIB)
APACHE_SUBST(MKDEP)
APACHE_SUBST(INSTALL_PROG_FLAGS)
+ APACHE_SUBST(MPM_MODULES)
+ APACHE_SUBST(ENABLED_MPM_MODULE)
APACHE_SUBST(DSO_MODULES)
APACHE_SUBST(ENABLED_DSO_MODULES)
APACHE_SUBST(LOAD_ALL_MODULES)
dnl APACHE_GEN_MAKEFILES
dnl Creates Makefiles
-AC_DEFUN(APACHE_GEN_MAKEFILES,[
+AC_DEFUN([APACHE_GEN_MAKEFILES],[
$SHELL $srcdir/build/fastgen.sh $srcdir $ac_cv_mkdir_p $BSD_MAKEFILE $APACHE_FAST_OUTPUT_FILES
])
-dnl ## APACHE_OUTPUT(file)
-dnl ## adds "file" to the list of files generated by AC_OUTPUT
-dnl ## This macro can be used several times.
-AC_DEFUN(APACHE_OUTPUT, [
- APACHE_OUTPUT_FILES="$APACHE_OUTPUT_FILES $1"
-])
-
dnl
dnl APACHE_TYPE_RLIM_T
dnl
dnl If rlim_t is not defined, define it to int
dnl
-AC_DEFUN(APACHE_TYPE_RLIM_T, [
+AC_DEFUN([APACHE_TYPE_RLIM_T], [
AC_CACHE_CHECK([for rlim_t], ac_cv_type_rlim_t, [
AC_TRY_COMPILE([
#include <sys/types.h>
define(mod_buildvars, [CFLAGS CXXFLAGS CPPFLAGS LDFLAGS LIBS INCLUDES])
dnl
dnl APACHE_MODPATH_INIT(modpath)
-AC_DEFUN(APACHE_MODPATH_INIT,[
+AC_DEFUN([APACHE_MODPATH_INIT],[
current_dir=$1
modpath_current=modules/$1
modpath_static=
> $modpath_current/modules.mk
])dnl
dnl
-AC_DEFUN(APACHE_MODPATH_FINISH,[
+AC_DEFUN([APACHE_MODPATH_FINISH],[
echo "DISTCLEAN_TARGETS = modules.mk" >> $modpath_current/modules.mk
echo "static = $modpath_static" >> $modpath_current/modules.mk
echo "shared = $modpath_shared" >> $modpath_current/modules.mk
])dnl
dnl
dnl APACHE_MODPATH_ADD(name[, shared[, objects [, ldflags[, libs]]]])
-AC_DEFUN(APACHE_MODPATH_ADD,[
+AC_DEFUN([APACHE_MODPATH_ADD],[
if test -z "$3"; then
objects="mod_$1.lo"
else
])dnl
dnl Same as APACHE_MODPATH_INIT/FINISH but for MPMs
dnl APACHE_MPMPATH_INIT(mpmpath)
-AC_DEFUN(APACHE_MPMPATH_INIT,[
+AC_DEFUN([APACHE_MPMPATH_INIT],[
current_dir=$1
modpath_current=server/mpm/$1
modpath_static=
> $modpath_current/modules.mk
])dnl
dnl
-AC_DEFUN(APACHE_MPMPATH_FINISH,[
+AC_DEFUN([APACHE_MPMPATH_FINISH],[
for var in mod_buildvars; do
if eval val=\"\$MOD_$var\"; test -n "$val"; then
echo "MOD_$var = $val" >> $modpath_current/modules.mk
dnl path -- relative path to MPM (default: server/mpm/mpmname)
dnl libs -- libs needed by this MPM
dnl
-AC_DEFUN(APACHE_MPM_MODULE,[
+AC_DEFUN([APACHE_MPM_MODULE],[
if ap_mpm_is_enabled $1; then
if test -z "$3"; then
objects="$1.lo"
static =
shared = $libname
EOF
- DSO_MODULES="$DSO_MODULES mpm_$1"
+ MPM_MODULES="$MPM_MODULES mpm_$1"
# add default MPM to LoadModule list
if test $1 = $default_mpm; then
- ENABLED_DSO_MODULES="${ENABLED_DSO_MODULES},mpm_$1"
+ ENABLED_MPM_MODULE="mpm_$1"
fi
fi
$4
dnl prereq_module's APACHE_MODULE() statement must have been processed
dnl before the current APACHE_MODULE() statement.
dnl
-AC_DEFUN(APACHE_MODULE,[
+AC_DEFUN([APACHE_MODULE],[
AC_MSG_CHECKING(whether to enable mod_$1)
define([optname],[--]ifelse($5,yes,disable,enable)[-]translit($1,_,-))dnl
AC_ARG_ENABLE(translit($1,_,-),APACHE_HELP_STRING(optname(),$2),force_$1=$enableval,enable_$1=ifelse($5,,maybe-all,$5))
_apmod_required="no"
;;
esac
- if test "$enable_$1" = "static"; then
- enable_$1=static
+ if test "$enable_$1" = "static" -o "$enable_$1" = "shared"; then
+ :
elif test "$enable_$1" = "yes"; then
enable_$1=$module_default
+ elif test "$enable_$1" = "few"; then
+ if test "$module_selection" = "few" -o "$module_selection" = "most" -o \
+ "$module_selection" = "all" -o "$module_selection" = "reallyall"
+ then
+ enable_$1=$module_default
+ else
+ enable_$1=no
+ fi
+ _apmod_extra_msg=" ($module_selection)"
elif test "$enable_$1" = "most"; then
if test "$module_selection" = "most" -o "$module_selection" = "all" -o \
"$module_selection" = "reallyall"
then
enable_$1=$module_default
- elif test "$module_selection" = "few" -o "$module_selection" = "none"; then
+ else
enable_$1=no
fi
_apmod_extra_msg=" ($module_selection)"
- elif test "$enable_$1" = "maybe-all"; then
+ elif test "$enable_$1" = "all" -o "$enable_$1" = "maybe-all"; then
if test "$module_selection" = "all" -o "$module_selection" = "reallyall"
then
enable_$1=$module_default
else
enable_$1=no
fi
- elif test "$enable_$1" = "no" -a "$module_selection" = "reallyall" -a \
- "$force_$1" != "no" ; then
+ elif test "$enable_$1" = "reallyall" -o "$enable_$1" = "no" ; then
+ if test "$module_selection" = "reallyall" -a "$force_$1" != "no" ; then
enable_$1=$module_default
_apmod_extra_msg=" ($module_selection)"
+ else
+ enable_$1=no
+ fi
+ else
+ enable_$1=no
fi
if test "$enable_$1" != "no"; then
dnl If we plan to enable it, allow the module to run some autoconf magic
dnl that may disable it because of missing dependencies.
ifelse([$6$7],,:,
[AC_MSG_RESULT([checking dependencies])
- ifelse([$7],,:,[if test "$enable_$7" = "no" ; then
- enable_$1=no
- AC_MSG_WARN("mod_$7 is disabled but required for mod_$1")
- elif test "$enable_$1" = "static" && test "$enable_$7" != "static" ; then
+ ifelse([$7],,:,[m4_foreach([prereq],[$7],
+ [if test "$enable_[]prereq" = "no" ; then
enable_$1=no
- AC_MSG_WARN("cannot build mod_$1 statically if mod_$7 is built shared")
- else])
+ AC_MSG_WARN("mod_[]prereq is disabled but required for mod_$1")
+ elif test "$enable_$1" = "static" && test "$enable_[]prereq" != "static" ; then
+ enable_$1=$enable_[]prereq
+ AC_MSG_WARN("building mod_$1 shared because mod_[]prereq is built shared")
+ el])se])
ifelse([$6],,:,[ $6])
ifelse([$7],,:,[fi])
AC_MSG_CHECKING(whether to enable mod_$1)
fi
shared="";;
*)
- enable_$1=`echo $enable_$1|sed 's/shared,*//'`
sharedobjs=yes
shared=yes
DSO_MODULES="$DSO_MODULES $1"
dnl
dnl APACHE_ENABLE_MODULES
dnl
-AC_DEFUN(APACHE_ENABLE_MODULES,[
+AC_DEFUN([APACHE_ENABLE_MODULES],[
module_selection=most
module_default=shared
])
])
-AC_DEFUN(APACHE_REQUIRE_CXX,[
+AC_DEFUN([APACHE_REQUIRE_CXX],[
if test -z "$apache_cxx_done"; then
AC_PROG_CXX
AC_PROG_CXXCPP
dnl Configure for OpenSSL, giving preference to
dnl "--with-ssl=<path>" if it was specified.
dnl
-AC_DEFUN(APACHE_CHECK_OPENSSL,[
+AC_DEFUN([APACHE_CHECK_OPENSSL],[
AC_CACHE_CHECK([for OpenSSL], [ac_cv_openssl], [
dnl initialise the variables we use
ac_cv_openssl=no
ap_openssl_found=""
ap_openssl_base=""
ap_openssl_libs=""
+ ap_openssl_mod_cflags=""
+ ap_openssl_mod_ldflags=""
dnl Determine the OpenSSL base directory, if any
AC_MSG_CHECKING([for user-provided OpenSSL base directory])
dnl Run library and function checks
liberrors=""
AC_CHECK_HEADERS([openssl/engine.h])
- AC_CHECK_FUNCS([SSLeay_version SSL_CTX_new], [], [liberrors="yes"])
- AC_CHECK_FUNCS([ENGINE_init ENGINE_load_builtin_engines RAND_egd])
+ AC_CHECK_FUNCS([SSL_CTX_new], [], [liberrors="yes"])
+ AC_CHECK_FUNCS([ENGINE_init ENGINE_load_builtin_engines RAND_egd \
+ CRYPTO_set_id_callback])
if test "x$liberrors" != "x"; then
AC_MSG_WARN([OpenSSL libraries are unusable])
fi
CPPFLAGS="$saved_CPPFLAGS"
LIBS="$saved_LIBS"
LDFLAGS="$saved_LDFLAGS"
+
+ dnl cache MOD_LDFLAGS, MOD_CFLAGS
+ ap_openssl_mod_cflags=$MOD_CFLAGS
+ ap_openssl_mod_ldflags=$MOD_LDFLAGS
])
if test "x$ac_cv_openssl" = "xyes"; then
AC_DEFINE(HAVE_OPENSSL, 1, [Define if OpenSSL is available])
+ APR_ADDTO(MOD_LDFLAGS, [$ap_openssl_mod_ldflags])
+ APR_ADDTO(MOD_CFLAGS, [$ap_openssl_mod_cflags])
+ fi
+
+ dnl On most platforms, the default multithreading logic in OpenSSL 1.0.x uses
+ dnl a threadid that is based on the address of errno. We need to double-check
+ dnl that &errno is, in fact, different for each thread before using that
+ dnl default.
+ AC_CACHE_CHECK([if OpenSSL can use &errno as a THREADID],
+ [ac_cv_openssl_use_errno_threadid], [
+ ac_cv_openssl_use_errno_threadid=no
+
+ save_CFLAGS=$CFLAGS
+ save_LIBS=$LIBS
+
+ CFLAGS=`$apr_config --cflags --cppflags --includes`
+ LIBS=`$apr_config --link-ld`
+
+ AC_RUN_IFELSE([
+ AC_LANG_PROGRAM([[
+ #include <stdlib.h>
+
+ #include "apr_pools.h"
+ #include "apr_thread_cond.h"
+ #include "apr_thread_proc.h"
+
+ #define NUM_THREADS 10
+
+ struct thread_data {
+ apr_thread_mutex_t *mutex;
+ apr_thread_cond_t *cv;
+ int *init_count;
+ void *errno_addr;
+ };
+
+ /**
+ * Thread entry point. Waits for all the threads to be started, then
+ * records the address of errno into the thread_data.
+ */
+ void * APR_THREAD_FUNC tmain(apr_thread_t *thread, void *data)
+ {
+ struct thread_data *tdata = data;
+
+ /* The only point of this barrier is to make sure that all threads
+ * are started before we record &errno, hopefully preventing any
+ * false negatives in case a platform "recycles" threads. */
+ apr_thread_mutex_lock(tdata->mutex);
+ ++(*tdata->init_count);
+
+ if (*tdata->init_count == NUM_THREADS) {
+ apr_thread_cond_broadcast(tdata->cv);
+ } else {
+ while (*tdata->init_count != NUM_THREADS) {
+ apr_thread_cond_wait(tdata->cv, tdata->mutex);
+ }
+ }
+ apr_thread_mutex_unlock(tdata->mutex);
+
+ tdata->errno_addr = &errno;
+ return NULL;
+ }
+ ]], [[
+ int ret = 0;
+ apr_status_t status;
+ int i;
+ int j;
+
+ apr_pool_t *pool;
+ apr_thread_mutex_t *mutex;
+ apr_thread_cond_t *cv;
+ int init_count = 0;
+
+ struct thread_data tdata[NUM_THREADS] = { 0 };
+ apr_thread_t *threads[NUM_THREADS] = { 0 };
+
+ if (apr_initialize() != APR_SUCCESS) {
+ exit(1);
+ }
+
+ /* Set up the shared APR primitives. */
+ if ((apr_pool_create(&pool, NULL) != APR_SUCCESS)
+ || (apr_thread_mutex_create(&mutex, 0, pool) != APR_SUCCESS)
+ || (apr_thread_cond_create(&cv, pool) != APR_SUCCESS)) {
+ ret = 2;
+ goto out;
+ }
+
+ /* Start every thread. */
+ for (i = 0; i < NUM_THREADS; ++i) {
+ tdata[i].mutex = mutex;
+ tdata[i].cv = cv;
+ tdata[i].init_count = &init_count;
+
+ status = apr_thread_create(&threads[i], NULL, tmain, &tdata[i],
+ pool);
+ if (status != APR_SUCCESS) {
+ ret = 3;
+ goto out;
+ }
+ }
+
+ /* Wait for them to finish (they'll record and exit after every one
+ * has been started). */
+ for (i = 0; i < NUM_THREADS; ++i) {
+ apr_thread_join(&status, threads[i]);
+ if (status != APR_SUCCESS) {
+ ret = 4;
+ goto out;
+ }
+ }
+
+ /* Check that no addresses were duplicated. */
+ for (i = 0; i < NUM_THREADS - 1; ++i) {
+ for (j = i + 1; j < NUM_THREADS; ++j) {
+ if (tdata[i].errno_addr == tdata[j].errno_addr) {
+ ret = 5;
+ goto out;
+ }
+ }
+ }
+
+ out:
+ apr_terminate();
+ exit(ret);
+ ]])
+ ], [
+ ac_cv_openssl_use_errno_threadid=yes
+ ], [
+ ac_cv_openssl_use_errno_threadid=no
+ ], [
+ dnl Assume the worst when cross-compiling; users can override via either
+ dnl cachevars or the config header if necessary.
+ ac_cv_openssl_use_errno_threadid=no
+ ])
+
+ CFLAGS=$save_CFLAGS
+ LIBS=$save_LIBS
+ ])
+ if test "x$ac_cv_openssl_use_errno_threadid" = "xyes"; then
+ AC_DEFINE(AP_OPENSSL_USE_ERRNO_THREADID, 1,
+ [Define if OpenSSL can use an errno-based threadid callback on this platform])
fi
])
fi
])
-AC_DEFUN(APACHE_CHECK_SYSTEMD, [
+AC_DEFUN([APACHE_CHECK_SYSTEMD], [
dnl Check for systemd support for listen.c's socket activation.
case $host in
*-linux-*)
esac
])
-dnl
-dnl APACHE_CHECK_NGHTTP2
-dnl
-dnl Configure for nghttp2, giving preference to
-dnl "--with-nghttp2=<path>" if it was specified.
-dnl
-AC_DEFUN(APACHE_CHECK_NGHTTP2,[
- AC_CACHE_CHECK([for nghttp2], [ac_cv_nghttp2], [
- dnl initialise the variables we use
- ac_cv_nghttp2=no
- ap_nghttp2_found=""
- ap_nghttp2_base=""
- ap_nghttp2_libs=""
-
- dnl Determine the nghttp2 base directory, if any
- AC_MSG_CHECKING([for user-provided nghttp2 base directory])
- AC_ARG_WITH(nghttp2, APACHE_HELP_STRING(--with-nghttp2=PATH, nghttp2 installation directory), [
- dnl If --with-nghttp2 specifies a directory, we use that directory
- if test "x$withval" != "xyes" -a "x$withval" != "x"; then
- dnl This ensures $withval is actually a directory and that it is absolute
- ap_nghttp2_base="`cd $withval ; pwd`"
- fi
- ])
- if test "x$ap_nghttp2_base" = "x"; then
- AC_MSG_RESULT(none)
- else
- AC_MSG_RESULT($ap_nghttp2_base)
- fi
-
- dnl Run header and version checks
- saved_CPPFLAGS="$CPPFLAGS"
- saved_LIBS="$LIBS"
- saved_LDFLAGS="$LDFLAGS"
-
- dnl Before doing anything else, load in pkg-config variables
- if test -n "$PKGCONFIG"; then
- saved_PKG_CONFIG_PATH="$PKG_CONFIG_PATH"
- AC_MSG_CHECKING([for pkg-config along $PKG_CONFIG_PATH])
- if test "x$ap_nghttp2_base" != "x" -a \
- -f "${ap_nghttp2_base}/lib/pkgconfig/libnghttp2.pc"; then
- dnl Ensure that the given path is used by pkg-config too, otherwise
- dnl the system libnghttp2.pc might be picked up instead.
- PKG_CONFIG_PATH="${ap_nghttp2_base}/lib/pkgconfig${PKG_CONFIG_PATH+:}${PKG_CONFIG_PATH}"
- export PKG_CONFIG_PATH
- fi
- AC_ARG_ENABLE(nghttp2-staticlib-deps,APACHE_HELP_STRING(--enable-nghttp2-staticlib-deps,[link mod_h2 with dependencies of libnghttp2's static libraries (as indicated by "pkg-config --static"). Must be specified in addition to --enable-h2.]), [
- if test "$enableval" = "yes"; then
- PKGCONFIG_LIBOPTS="--static"
- fi
- ])
- ap_nghttp2_libs="`$PKGCONFIG $PKGCONFIG_LIBOPTS --libs-only-l --silence-errors libnghttp2`"
- if test $? -eq 0; then
- ap_nghttp2_found="yes"
- pkglookup="`$PKGCONFIG --cflags-only-I libnghttp2`"
- APR_ADDTO(CPPFLAGS, [$pkglookup])
- APR_ADDTO(MOD_CFLAGS, [$pkglookup])
- APR_ADDTO(ab_CFLAGS, [$pkglookup])
- pkglookup="`$PKGCONFIG $PKGCONFIG_LIBOPTS --libs-only-L libnghttp2`"
- APR_ADDTO(LDFLAGS, [$pkglookup])
- APR_ADDTO(MOD_LDFLAGS, [$pkglookup])
- pkglookup="`$PKGCONFIG $PKGCONFIG_LIBOPTS --libs-only-other libnghttp2`"
- APR_ADDTO(LDFLAGS, [$pkglookup])
- APR_ADDTO(MOD_LDFLAGS, [$pkglookup])
- fi
- PKG_CONFIG_PATH="$saved_PKG_CONFIG_PATH"
- fi
-
- dnl fall back to the user-supplied directory if not found via pkg-config
- if test "x$ap_nghttp2_base" != "x" -a "x$ap_nghttp2_found" = "x"; then
- APR_ADDTO(CPPFLAGS, [-I$ap_nghttp2_base/include])
- APR_ADDTO(MOD_CFLAGS, [-I$ap_nghttp2_base/include])
- APR_ADDTO(ab_CFLAGS, [-I$ap_nghttp2_base/include])
- APR_ADDTO(LDFLAGS, [-L$ap_nghttp2_base/lib])
- APR_ADDTO(MOD_LDFLAGS, [-L$ap_nghttp2_base/lib])
- if test "x$ap_platform_runtime_link_flag" != "x"; then
- APR_ADDTO(LDFLAGS, [$ap_platform_runtime_link_flag$ap_nghttp2_base/lib])
- APR_ADDTO(MOD_LDFLAGS, [$ap_platform_runtime_link_flag$ap_nghttp2_base/lib])
- fi
- fi
-
- AC_MSG_CHECKING([for nghttp2 version >= 1.0.0])
- AC_TRY_COMPILE([#include <nghttp2/nghttp2ver.h>],[
-#if !defined(NGHTTP2_VERSION_NUM)
-#error "Missing nghttp2 version"
-#endif
-#if NGHTTP2_VERSION_NUM < 0x010000
-#error "Unsupported nghttp2 version " NGHTTP2_VERSION_TEXT
-#endif],
- [AC_MSG_RESULT(OK)
- ac_cv_nghttp2=yes],
- [AC_MSG_RESULT(FAILED)])
-
- if test "x$ac_cv_nghttp2" = "xyes"; then
- ap_nghttp2_libs="${ap_nghttp2_libs:--lnghttp2} `$apr_config --libs`"
- APR_ADDTO(MOD_LDFLAGS, [$ap_nghttp2_libs])
- APR_ADDTO(LIBS, [$ap_nghttp2_libs])
- APR_SETVAR(ab_LDFLAGS, [$MOD_LDFLAGS])
- APACHE_SUBST(ab_CFLAGS)
- APACHE_SUBST(ab_LDFLAGS)
-
- dnl Run library and function checks
- liberrors=""
- AC_CHECK_HEADERS([nghttp2/nghttp2.h])
- AC_CHECK_FUNCS([nghttp2_session_server_new2], [], [liberrors="yes"])
- if test "x$liberrors" != "x"; then
- AC_MSG_WARN([nghttp2 library is unusable])
- fi
- else
- AC_MSG_WARN([nghttp2 version is too old])
- fi
-
- dnl restore
- CPPFLAGS="$saved_CPPFLAGS"
- LIBS="$saved_LIBS"
- LDFLAGS="$saved_LDFLAGS"
- ])
- if test "x$ac_cv_nghttp2" = "xyes"; then
- AC_DEFINE(HAVE_NGHTTP2, 1, [Define if nghttp2 is available])
- fi
-])
-
dnl
dnl APACHE_EXPORT_ARGUMENTS
dnl Export (via APACHE_SUBST) the various path-related variables that
dnl apache will use while generating scripts like autoconf and apxs and
dnl the default config file.
-AC_DEFUN(APACHE_SUBST_EXPANDED_ARG,[
+AC_DEFUN([APACHE_SUBST_EXPANDED_ARG],[
APR_EXPAND_VAR(exp_$1, [$]$1)
APACHE_SUBST(exp_$1)
APR_PATH_RELATIVE(rel_$1, [$]exp_$1, ${prefix})
APACHE_SUBST(rel_$1)
])
-AC_DEFUN(APACHE_EXPORT_ARGUMENTS,[
+AC_DEFUN([APACHE_EXPORT_ARGUMENTS],[
APACHE_SUBST_EXPANDED_ARG(exec_prefix)
APACHE_SUBST_EXPANDED_ARG(bindir)
APACHE_SUBST_EXPANDED_ARG(sbindir)
AC_CACHE_CHECK([whether gcc accepts $1], ap_gcc_ckvar, [
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $1"
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([int foo() { return 0; }])],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
[ap_gcc_ckvar=yes], [ap_gcc_ckvar=no])
CFLAGS="$save_CFLAGS"
])
projects / apache / blobdiff