Configure: Fix Guile 1.9 typedef checks.

I forgot to update these checks after switching the test language to C++.

diff --git a/configure.in b/configure.in
index fcdaa5888425a80a46e794bd1d217aa1a06dec3a..7396379f9b94ae2936cf5c02643309ab37620b07 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -113,12 +113,12 @@ STEPMAKE_TEXMF_DIRS
 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"