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.
20 lines
503 B
Plaintext
20 lines
503 B
Plaintext
dnl @synopsis XIPH_ADD_CXXFLAGS
|
|
dnl
|
|
dnl Add the given option to CXXFLAGS, if it doesn't break the compiler
|
|
|
|
AC_DEFUN([XIPH_ADD_CXXFLAGS],
|
|
[AC_MSG_CHECKING([if $CXX accepts $1])
|
|
AC_LANG_ASSERT([C++])
|
|
ac_add_cxxflags__old_cxxflags="$CXXFLAGS"
|
|
CXXFLAGS="$1"
|
|
AC_TRY_LINK([
|
|
#include <cstdio>
|
|
],
|
|
[puts("Hello, World!"); return 0;],
|
|
AC_MSG_RESULT([yes])
|
|
CXXFLAGS="$ac_add_cxxflags__old_cxxflags $1",
|
|
AC_MSG_RESULT([no])
|
|
CXXFLAGS="$ac_add_cxxflags__old_cxxflags"
|
|
)
|
|
])# XIPH_ADD_CXXFLAGS
|