Add GNULib module, for missing snprintf on OSF1 V4.0, reported by

Yoann Vandoorselaere <yoann@prelude-ids.org>.
Note that lib/ does not yet use it.

1 files changed, 44 insertions, 0 deletions

diff --git a/gl/m4/alloca.m4 b/gl/m4/alloca.m4
new file mode 100644
index 0000000000..6fcb205e94
--- /dev/null
+++ b/gl/m4/alloca.m4
@@ -0,0 +1,44 @@
+# alloca.m4 serial 4
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_ALLOCA],
+[
+  dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
+  AC_REQUIRE([AC_PROG_CPP])
+  AC_REQUIRE([AC_PROG_EGREP])
+
+  AC_REQUIRE([AC_FUNC_ALLOCA])
+  if test $ac_cv_func_alloca_works = no; then
+    gl_PREREQ_ALLOCA
+  fi
+
+  # Define an additional variable used in the Makefile substitution.
+  if test $ac_cv_working_alloca_h = yes; then
+    AC_EGREP_CPP([Need own alloca], [
+#if defined __GNUC__ || defined _AIX || defined _MSC_VER
+	Need own alloca
+#endif
+      ],
+      [AC_DEFINE(HAVE_ALLOCA, 1,
+	    [Define to 1 if you have `alloca' after including <alloca.h>,
+	     a header that may be supplied by this distribution.])
+       ALLOCA_H=alloca.h],
+      [ALLOCA_H=])
+  else
+    ALLOCA_H=alloca.h
+  fi
+  AC_SUBST([ALLOCA_H])
+
+  AC_DEFINE(HAVE_ALLOCA_H, 1,
+    [Define HAVE_ALLOCA_H for backward compatibility with older code
+     that includes <alloca.h> only if HAVE_ALLOCA_H is defined.])
+])
+
+# Prerequisites of lib/alloca.c.
+# STACK_DIRECTION is already handled by AC_FUNC_ALLOCA.
+AC_DEFUN([gl_PREREQ_ALLOCA], [:])