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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

Closes #22946.
This commit is contained in:
Mojca Miklavec 2022-11-05 13:22:25 +01:00 • committed by Vadim Zeitlin
parent 5c72c7af35
commit da4b42688a
2 changed files with 10 additions and 2 deletions
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6
configure.in
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@ -2215,6 +2215,7 @@ if test "$wxUSE_ZLIB" != "no" ; then
[
#include <zlib.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
@ -2300,6 +2301,7 @@ if test "$wxUSE_LIBPNG" != "no" ; then
[
#include <png.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
@ -5086,7 +5088,9 @@ 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]
)