Build: Update configure.in with `autoupdate'.

diff --git a/configure.in b/configure.in
index 3f3b4f4d7b83f3df2ffa77440f6000c34a0f5eed..10036bbd50a81d958242496772f5c520020edd1b 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -104,7 +104,7 @@ STEPMAKE_BISON(OPTIONAL, 1.29)
 STEPMAKE_FLEX(REQUIRED)
 STEPMAKE_FLEXLEXER(REQUIRED)
 STEPMAKE_FLEXLEXER_LOCATION
-AC_LANG_C
+AC_LANG([C])
 STEPMAKE_LOCALE
 STEPMAKE_GETTEXT
 STEPMAKE_MSGFMT(REQUIRED)
@@ -124,15 +124,12 @@ CFLAGS="$save_CFLAGS"
 save_CPPFLAGS="$CPPFLAGS"
 CPPFLAGS="$GUILE_CFLAGS $CPPFLAGS"
 AC_MSG_CHECKING(GUILE rational bugfix)
-AC_TRY_CPP(
-#include <libguile.h>
+AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <libguile.h>
 #ifdef SCM_FRACTION_REDUCED_BIT
 #error
 #endif
-,
-AC_MSG_RESULT(ok),
-REQUIRED="$REQUIRED GUILE-with-rational-bugfix"
-AC_MSG_RESULT(Must have patched GUILE rational support. See INSTALL.txt))
+]])],[AC_MSG_RESULT(ok)],[REQUIRED="$REQUIRED GUILE-with-rational-bugfix"
+AC_MSG_RESULT(Must have patched GUILE rational support. See INSTALL.txt)])
 CPPFLAGS="$save_CPPFLAGS"