05609d5b4b
Extra compile options are detected at configure time with new XIPH_ADD_*FLAGS m4 macros. Options enabled include -Wextra, -D_FORTIFY_SOURCE=2 and stack protection.
19 lines
452 B
Plaintext
19 lines
452 B
Plaintext
dnl @synopsis XIPH_ADD_CFLAGS
|
|
dnl
|
|
dnl Add the given option to CFLAGS, if it doesn't break the compiler
|
|
|
|
AC_DEFUN([XIPH_ADD_CFLAGS],
|
|
[AC_MSG_CHECKING([if $CC accepts $1])
|
|
ac_add_cflags__old_cflags="$CFLAGS"
|
|
CFLAGS="$1"
|
|
AC_TRY_LINK([
|
|
#include <stdio.h>
|
|
],
|
|
[puts("Hello, World!"); return 0;],
|
|
AC_MSG_RESULT([yes])
|
|
CFLAGS="$ac_add_cflags__old_cflags $1",
|
|
AC_MSG_RESULT([no])
|
|
CFLAGS="$ac_add_cflags__old_cflags"
|
|
)
|
|
])# XIPH_ADD_CFLAGS
|