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| author | Max Kellermann <max@duempel.org> | 2014-06-11 08:08:33 +0200 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2014-06-11 08:08:33 +0200 |
| commit | 044c81b644810e003a51f3178b413e01f3eb5088 (patch) | |
| tree | 30f0e30a9258a117cde1429c69077e8bed4e6393 /m4/ax_require_defined.m4 | |
| parent | 507d8fdc6f63800cd022d77fbe2ccbdac097759f (diff) | |
| download | mpd-044c81b644810e003a51f3178b413e01f3eb5088.tar.gz mpd-044c81b644810e003a51f3178b413e01f3eb5088.tar.xz mpd-044c81b644810e003a51f3178b413e01f3eb5088.zip | |
m4: update to autoconf-archive 20140228
Diffstat (limited to 'm4/ax_require_defined.m4')
| -rw-r--r-- | m4/ax_require_defined.m4 | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/m4/ax_require_defined.m4 b/m4/ax_require_defined.m4 new file mode 100644 index 000000000..cae11112d --- /dev/null +++ b/m4/ax_require_defined.m4 @@ -0,0 +1,37 @@ +# =========================================================================== +# 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 |