vkd3d/m4/check-cflags.m4

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dnl
dnl This file contains code derived from WINE_TRY_CFLAGS() and is used courtesy of Alexandre Julliard.
dnl
dnl VKD3D_CHECK_CFLAGS(flags)
AC_DEFUN([VKD3D_CHECK_CFLAGS],
[AS_VAR_PUSHDEF([vkd3d_cflags], vkd3d_cv_cflags_[[$1]])dnl
AC_CACHE_CHECK([whether the compiler supports $1], vkd3d_cflags,
[vkd3d_cflags_saved=$CFLAGS
CFLAGS="$CFLAGS $1 -Werror"
AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(int argc, char **argv) { return 0; }]])],
[AS_VAR_SET(vkd3d_cflags, yes)],
[AS_VAR_SET(vkd3d_cflags, no)])
CFLAGS=$vkd3d_cflags_saved])
AS_VAR_IF([vkd3d_cflags], [yes], [VKD3D_CFLAGS="$VKD3D_CFLAGS $1"])dnl
AS_VAR_POPDEF([vkd3d_cflags])])