* data/bison.c++: Merge the two generated headers. Insert a copyright

[bison.git] / configure.in

diff --git a/configure.in b/configure.in
index 9e8d2d5b9232e4e03a44dccf3921127eef25f6dd..654caf2914064dc155516eac226c33d0447b31f5 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -42,6 +42,11 @@ AC_ISC_POSIX
 AM_PROG_CC_STDC
 AC_PROG_RANLIB
 AM_MISSING_PROG([AUTOM4TE], [autom4te])
+BISON_PROG_GNU_M4
+if test x"$ac_cv_prog_gnu_m4" != xyes; then
+  AC_MSG_ERROR([GNU M4 1.4 is required])
+fi
+AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
 
 AC_ARG_ENABLE(gcc-warnings,
 [  --enable-gcc-warnings   turn on lots of GCC warnings (not recommended)],
@@ -89,7 +94,8 @@ AC_FUNC_ALLOCA
 AC_FUNC_OBSTACK
 AC_FUNC_ERROR_AT_LINE
 AC_FUNC_STRNLEN
-AC_CHECK_FUNCS(mkstemp setlocale)
+UTILS_FUNC_MKSTEMP
+AC_CHECK_FUNCS(setlocale)
 AC_CHECK_DECLS([free, stpcpy, strchr, strspn, strnlen, malloc, memchr, memrchr])
 AC_REPLACE_FUNCS(stpcpy strchr strspn memchr memrchr)
 jm_FUNC_MALLOC