doc: use ASCII in .texi files where UTF-8 isn't needed

[gnulib.git] / m4 / assert.m4

diff --git a/m4/assert.m4 b/m4/assert.m4
index c7348e4..b9bb634 100644 (file)
--- a/m4/assert.m4
+++ b/m4/assert.m4
@@ -1,13 +1,24 @@
-#serial 2
-dnl based on code from Eleftherios Gkioulekas
+#serial 7
+
+# Copyright (C) 1998-1999, 2001, 2004, 2008-2014 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
 
-AC_DEFUN(jm_ASSERT,
+dnl based on code from Eleftherios Gkioulekas
+dnl Autoconf 2.60 provides AC_HEADER_ASSERT for the same purpose, but
+dnl it has broken semantics for --enable-assert until 2.64.
+AC_DEFUN([gl_ASSERT],
 [
-  AC_MSG_CHECKING(whether to enable assertions)
-  AC_ARG_ENABLE(assert,
-       [  --disable-assert        turn off assertions],
-       [ AC_MSG_RESULT(no)
-         AC_DEFINE(NDEBUG,1,[Define to 1 if assertions should be disabled.]) ],
-       [ AC_MSG_RESULT(yes) ]
-               )
+  AC_MSG_CHECKING([whether to enable assertions])
+  AC_ARG_ENABLE([assert],
+    [AS_HELP_STRING([--disable-assert], [turn off assertions])],
+    [AS_IF([test "x$enableval" = xno],
+      [AC_DEFINE([NDEBUG], [1],
+        [Define to 1 if assertions should be disabled.])],
+      [test "x$enableval" != xyes],
+      [AC_MSG_WARN([invalid argument supplied to --enable-assert])
+      enable_assert=yes])],
+    [enable_assert=yes])
+  AC_MSG_RESULT([$enable_assert])
 ])