if test "x$GCC" = xyes; then
CFLAGS="-std=c89 -pedantic -Wall -Wextra -Werror $CFLAGS"
CFLAGS="-D_XOPEN_SOURCE=500 -Wno-error=int-to-pointer-cast $CFLAGS"
+ # Additional security flags.
+ CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2 -fstack-protector -fPIE -pie"
+ LDFLAGS="$LDFLAGS -z relro -z now"
fi
AC_CHECK_LIB([pthread], [pthread_create],