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c37f6c4c7c
As part of that we also upgrade required autoconf version to 2.69 which is what I see in rhel/centos 7 and ubuntu 14.04. Both are old enough. And, of course, .tar.gz releases still ship "packaged" configure, so will work on older distros. This fixes issue #1335.
13 lines
503 B
Plaintext
13 lines
503 B
Plaintext
AC_DEFUN([AX_C___ATTRIBUTE__], [
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AC_MSG_CHECKING(for __attribute__)
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AC_CACHE_VAL(ac_cv___attribute__, [
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
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static void foo(void) __attribute__ ((unused));
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void foo(void) { exit(1); }]], [[]])],[ac_cv___attribute__=yes],[ac_cv___attribute__=no
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])])
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if test "$ac_cv___attribute__" = "yes"; then
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AC_DEFINE(HAVE___ATTRIBUTE__, 1, [define if your compiler has __attribute__])
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fi
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AC_MSG_RESULT($ac_cv___attribute__)
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])
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