STEPMAKE_GUILE_DEVEL(REQUIRED, 1.8.2)
# check for 2 typedefs added in Guile 1.9
-save_CFLAGS="$CFLAGS"
-CFLAGS="$GUILE_CFLAGS $CFLAGS"
+save_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS="$GUILE_CFLAGS $CXXFLAGS"
AC_CHECK_TYPES([scm_t_hash_fold_fn, scm_t_hash_handle_fn],
[AC_DEFINE(HAVE_GUILE_HASH_FUNC)], [],
[#include <libguile.h>])
-CFLAGS="$save_CFLAGS"
+CXXFLAGS="$save_CXXFLAGS"
## check rational bugfix.
save_CPPFLAGS="$CPPFLAGS"