38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
https://lists.gnu.org/archive/html/bug-bash/2023-02/msg00000.html)
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From 2cdf8b42885189b3cf7c47096b01f104e520546a Mon Sep 17 00:00:00 2001
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From: Sam James <sam@gentoo.org>
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Date: Thu, 2 Feb 2023 05:43:37 +0000
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Subject: [PATCH] aclocal.m4: fix -Wimplicit-function-declaration in dup2 check
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dup2 requires a <unistd.h> include. Fixes the following when diffing config.log
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when testing with a stricter compiler:
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```
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-warning: call to undeclared function 'dup2'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
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+error: call to undeclared function 'dup2'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
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```
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--- aclocal.m4
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+++ aclocal.m4
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@@ -238,6 +238,9 @@ AC_CACHE_VAL(bash_cv_dup2_broken,
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdlib.h>
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+#ifdef HAVE_UNISTD_H
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+#include <unistd.h>
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+#endif
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int
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main()
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{
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--- configure
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+++ configure
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@@ -18121,6 +18121,9 @@ else $as_nop
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdlib.h>
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+#ifdef HAVE_UNISTD_H
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+#include <unistd.h>
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+#endif
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int
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main()
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{
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