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authorJörg Frings-Fürst <debian@jff-webhosting.net>2016-08-20 15:09:31 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2016-08-20 15:09:31 +0200
commit143bfc9f801c84428074312d661f8e08803df83b (patch)
tree59a8a447529bd9ce3807aa8bacef861dc5aafd70 /m4/ax_require_defined.m4
parent29a7aef998e975b42401cfa96d1b750d91eadf06 (diff)
Imported Upstream version 0.23.5upstream/0.23.5
Diffstat (limited to 'm4/ax_require_defined.m4')
-rw-r--r--m4/ax_require_defined.m437
1 files changed, 37 insertions, 0 deletions
diff --git a/m4/ax_require_defined.m4 b/m4/ax_require_defined.m4
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+# ===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_require_defined.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_REQUIRE_DEFINED(MACRO)
+#
+# DESCRIPTION
+#
+# AX_REQUIRE_DEFINED is a simple helper for making sure other macros have
+# been defined and thus are available for use. This avoids random issues
+# where a macro isn't expanded. Instead the configure script emits a
+# non-fatal:
+#
+# ./configure: line 1673: AX_CFLAGS_WARN_ALL: command not found
+#
+# It's like AC_REQUIRE except it doesn't expand the required macro.
+#
+# Here's an example:
+#
+# AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
+#
+# LICENSE
+#
+# Copyright (c) 2014 Mike Frysinger <vapier@gentoo.org>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 1
+
+AC_DEFUN([AX_REQUIRE_DEFINED], [dnl
+ m4_ifndef([$1], [m4_fatal([macro ]$1[ is not defined; is a m4 file missing?])])
+])dnl AX_REQUIRE_DEFINED