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detect _FORTIFY_SOURCE on openwrt

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This commit is contained in:
Paul Gardner-Stephen 2016-09-22 15:41:40 +09:30
parent 00c8f0fc65
commit 33a82bb012
1 changed files with 12 additions and 5 deletions
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17
configure.ac
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@ -18,12 +18,19 @@ dnl AX_CHECK_COMPILE_FLAG[-D_FORTIFY_SOURCE=1],[AC_DEFINE([FORTIFY_SOURCE_ENABLE
dnl [Fortify source already defined.])])
dnl AX_CHECK_COMPILE_FLAG[-D_FORTIFY_SOURCE=2],[AC_DEFINE([FORTIFY_SOURCE_ENABLED], [1],
dnl [Fortify source already defined.])])
AC_EGREP_CPP(dont_have_fortify_source, [
#ifdef _FORTIFY_SOURCE
yes_have_fortify_source
#else
dont_have_fortify_source
AC_TRY_RUN([
#ifdef __cplusplus
extern "C"
#endif
#include <stdio.h>
int main(int argc, char **argv)
{
#ifndef _FORTIFY_SOURCE
return 0;
#else
return 1;
#endif
}
], [
AC_MSG_CHECKING([if _FORTIFY_SOURCE automatically declared])
AC_MSG_RESULT([Adding -D_FORTIFY_SOURCE=2 to CFLAGS])