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Fix implicit declaration configuration errors with Xcode 12

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Some configure could fail with errors like the following:

conftest.c:56:33: error: implicitly declaring library function 'exit'
with type 'void (int) __attribute__((noreturn))'
[-Werror,-Wimplicit-function-declaration]

See https://trac.macports.org/ticket/61672

See #22946.

(cherry picked from commit da4b42688a6cd5444eefb91bf40183d88203ffca)
This commit is contained in:
Mojca Miklavec 2022-11-05 13:22:25 +01:00 committed by Vadim Zeitlin
parent 55c1ad85b4
commit a0b7450f69
2 changed files with 10 additions and 2 deletions
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6
configure vendored
View File

@ -26147,6 +26147,7 @@ else
#include <zlib.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
@ -26286,6 +26287,7 @@ else
#include <png.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
@ -37959,7 +37961,9 @@ if ${wx_cv_inotify_usable+:} false; then :
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int main() { return inotify_init(); }
#include <sys/inotify.h>
int main() { return inotify_init(); }
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
wx_cv_inotify_usable=yes

6
configure.in
View File

@ -2514,6 +2514,7 @@ if test "$wxUSE_ZLIB" != "no" ; then
[
#include <zlib.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
@ -2599,6 +2600,7 @@ if test "$wxUSE_LIBPNG" != "no" ; then
[
#include <png.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
@ -5623,7 +5625,9 @@ if test "$wxUSE_FSWATCHER" = "yes"; then
[whether inotify is usable],
wx_cv_inotify_usable,
AC_LINK_IFELSE(
[AC_LANG_SOURCE([int main() { return inotify_init(); }])],
[AC_LANG_SOURCE([
#include <sys/inotify.h>
int main() { return inotify_init(); }])],
[wx_cv_inotify_usable=yes],
[wx_cv_inotify_usable=no]
)