AC_MSG_ERROR([m4 missing])
fi
-# GCC flags
-
-test_gcc_flag() {
- AC_LANG_CONFTEST([int main(int argc, char*argv[]) {}])
- $CC -c conftest.c $CFLAGS -o conftest.o > /dev/null 2> /dev/null
- ret=$?
- rm -f conftest.o
- return $ret
-}
-
-# If using GCC specify some additional parameters
-if test "x$GCC" = "xyes" ; then
- DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wcast-align -Wwrite-strings -Winline -Wno-unused-parameter -ffast-math"
-
- for flag in $DESIRED_FLAGS ; do
- AC_MSG_CHECKING([whether $CC accepts $flag])
- if test_gcc_flag $flag ; then
- CFLAGS="$CFLAGS $flag"
- AC_MSG_RESULT([yes])
- else
- AC_MSG_RESULT([no])
- fi
- done
-fi
+dnl Compiler flags
+DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wcast-align -Wwrite-strings -Winline -Wno-unused-parameter -ffast-math"
+
+for flag in $DESIRED_FLAGS ; do
+ CC_CHECK_CFLAGS([$flag], [CFLAGS="$CFLAGS $flag"])
+done
# Native atomic operation support
AC_ARG_ENABLE([atomic-arm-linux-helpers],