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ID:370 - add anonymous union support in CFLAGS for older gcc

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In older GCC versions when an element in an anonymous unions/structures are
addressed by name, gcc must use -fms-extensions.

Change-Id: Id80617ad9336c7a02fbe613b58e3f337fa4baeee
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.xx.bhuvaragan@ericsson.com>
This commit is contained in:
Parthasarathy Bhuvaragan 2015-02-16 14:57:36 +01:00 committed by Zdenek Styblik
parent 531569ec62
commit 925a2fe55c
1 changed files with 18 additions and 0 deletions
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18
configure.ac
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@ -130,6 +130,24 @@ if test "x$xenable_all_options" = "xyes" || test "x$xenable_solaris_opt" = "xyes
AC_DEFINE(ENABLE_ALL_OPTIONS, [1], [Define to 1 to enable all command line options.]) AC_DEFINE(ENABLE_ALL_OPTIONS, [1], [Define to 1 to enable all command line options.])
fi fi
dnl Determine anonymous union/structure support in GCC
AC_TRY_COMPILE([
#include <stdio.h>
], [
struct test {
union {
int a;
unsigned int b;
};
} test;
printf("a is %d", test.a);
], ac_need_fms_extension=no, ac_need_fms_extension=yes)
if test "x$ac_need_fms_extension" = "xyes"; then
CFLAGS="$CFLAGS -fms-extensions"
AC_SUBST(CFLAGS)
fi
dnl check for OpenSSL functionality dnl check for OpenSSL functionality
AC_ARG_ENABLE([internal-md5], AC_ARG_ENABLE([internal-md5],
[AC_HELP_STRING([--enable-internal-md5], [AC_HELP_STRING([--enable-internal-md5],