portability: use va_start and va_end in the same function.

[bison.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 871b0df35739e7e678d2868722f635d9cf6a5875..4f1b20f94b62c9532b99d395bd3cada897fbec53 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -94,6 +94,8 @@ AC_PROG_YACC
 AC_PROG_RANLIB
 AC_PROG_GNU_M4
 AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
+AC_DEFINE_UNQUOTED([M4_GNU_OPTION], ["$M4_GNU"], [Define to "-g" if GNU M4
+supports -g, otherwise to "".])
 AM_MISSING_PROG([HELP2MAN], [help2man])
 AC_PATH_PROG([XSLTPROC], [xsltproc])
 AC_SUBST([XSLTPROC])
@@ -115,9 +117,10 @@ BISON_PREREQ_SUBPIPE
 BISON_PREREQ_TIMEVAR
 
 # Gettext.
-# We've never tested with gettext versions before 0.15, so play it safe.
-AM_GNU_GETTEXT([external], [need-formatstring-macros])
-AM_GNU_GETTEXT_VERSION([0.15])
+# We use gnulib, which is only guaranteed to work properly with the
+# latest Gettext.
+AM_GNU_GETTEXT([external], [need-ngettext])
+AM_GNU_GETTEXT_VERSION([0.17])
 BISON_I18N
 
 # Internationalized parsers.
@@ -145,11 +148,13 @@ AC_SUBST([O0CXXFLAGS], [`echo $CXXFLAGS | sed 's/-O[[0-9]] *//'`])
 gt_JAVACOMP([1.3], [1.4])
 gt_JAVAEXEC
 
-AC_SUBST([gl_PREFIXED_LIBOBJS],
-         [$(echo "$gl_LIBOBJS" | sed -e 's, , lib/,g')])
-for ac_var in ERRNO_H GETOPT_H INTTYPES_H STDBOOL_H STDINT_H WCHAR_H WCTYPE_H
+# We use gnulib, but from lib/local.mk instead of lib/Makefile.am.
+# So prefix paths with lib/.  See also etc/prefix-gnulib-mk.
+gl_LIBOBJS=`echo "$gl_LIBOBJS" | sed -e 's, , lib/,g'`
+for ac_var in ALLOCA_H ERRNO_H FCNTL_H GETOPT_H INTTYPES_H \
+              STDBOOL_H STDINT_H SYS_WAIT_H WCHAR_H WCTYPE_H
 do
-  eval "$ac_var=lib/\$$ac_var"
+  eval "test 'x$ac_var' = x || $ac_var=lib/\$$ac_var"
 done
 AC_CONFIG_FILES([Makefile
                 po/Makefile.in