Build Fix -- FFI auto-detection via pkg-config

	* m4/sxe-emodffi.m4 (SXE_FFI_TRY_PKGCONFIG): Save the results of
	SXE_PC_CHECK_CPPFLAGS into FFI_CPPFLAGS _before_ checking for
	headers.

Signed-off-by: Steve Youngs <steve@sxemacs.org>

diff --git a/m4/sxe-emodffi.m4 b/m4/sxe-emodffi.m4
index be8849f..4c0c0d9 100644 (file)
--- a/m4/sxe-emodffi.m4
+++ b/m4/sxe-emodffi.m4
@@ -118,14 +118,15 @@ AC_DEFUN([SXE_FFI_TRY_PKGCONFIG], [dnl
                sxe_cv_feat_ffi="no"
                MM_FAIL
        else
-               SXE_CHECK_HEADERS([ffi.h])
                SXE_PC_CHECK_EXISTS([libffi])
                SXE_PC_CHECK_VERSION([libffi])
                SXE_PC_CHECK_CPPFLAGS([libffi])
                SXE_PC_CHECK_LDFLAGS([libffi])
                SXE_PC_CHECK_LIBS([libffi])
-               SXE_DUMP_LIBS
+               FFI_CPPFLAGS="${sxe_cv_pc_libffi_cppflags}"
                CPPFLAGS="$CPPFLAGS $FFI_CPPFLAGS"
+               SXE_CHECK_HEADERS([ffi.h])
+               SXE_DUMP_LIBS
                if test "$ac_cv_header_ffi_h" = "yes"; then
                        AC_CHECK_LIB([ffi], [ffi_call], [dnl
                                sxe_cv_feat_ffi="yes"