doc: merge HACKING and README-hacking.

[bison.git] / m4 / m4.m4

diff --git a/m4/m4.m4 b/m4/m4.m4
index 3ef7908492fccf35ea2157feeb5724aaa8cb31e2..be0140f06a9fb1426adf1dfff04c4b91339a47be 100644 (file)
--- a/m4/m4.m4
+++ b/m4/m4.m4
@@ -1,9 +1,22 @@
-# serial 1
+# Copyright 2000 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-# BISON_AC_PROG_GNU_M4
-# --------------------
+# BISON_PROG_GNU_M4
+# -----------------
 # Check for GNU m4, at least 1.3 (supports frozen files).
-AC_DEFUN([BISON_AC_PROG_GNU_M4],
+AC_DEFUN([BISON_PROG_GNU_M4],
 [AC_PATH_PROGS(M4, gm4 gnum4 m4, m4)
 AC_CACHE_CHECK(whether m4 supports frozen files, ac_cv_prog_gnu_m4,
 [ac_cv_prog_gnu_m4=no