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Include <sys/inotify.h> in the inotify_init probe, to avoid
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an implicit function declaration. Future compilers are likely
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to reject implicit function declarations by default, making
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the configure check invalid as written.
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Fixed upstream via:
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commit da4b42688a6cd5444eefb91bf40183d88203ffca
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Author: Mojca Miklavec <mojca@macports.org>
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Date: Sat Nov 5 13:22:25 2022 +0100
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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:
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conftest.c:56:33: error: implicitly declaring library function 'exit'
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with type 'void (int) __attribute__((noreturn))'
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[-Werror,-Wimplicit-function-declaration]
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See https://trac.macports.org/ticket/61672
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Closes #22946.
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diff --git a/configure b/configure
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index 54eb7a74f95d4dd2..232d202cc5da2345 100755
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--- a/configure
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+++ b/configure
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@@ -37928,7 +37916,9 @@ if ${wx_cv_inotify_usable+:} false; then :
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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-int main() { return inotify_init(); }
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+
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+ #include <sys/inotify.h>
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+ int main() { return inotify_init(); }
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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wx_cv_inotify_usable=yes
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diff --git a/configure.in b/configure.in
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index c76c528f6635bece..bf6a33b3c10dc27a 100644
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--- a/configure.in
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+++ b/configure.in
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@@ -5622,7 +5622,9 @@ if test "$wxUSE_FSWATCHER" = "yes"; then
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[whether inotify is usable],
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wx_cv_inotify_usable,
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AC_LINK_IFELSE(
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- [AC_LANG_SOURCE([int main() { return inotify_init(); }])],
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+ [AC_LANG_SOURCE([
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+ #include <sys/inotify.h>
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+ int main() { return inotify_init(); }])],
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[wx_cv_inotify_usable=yes],
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[wx_cv_inotify_usable=no]
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)
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