Display binary location even if source and symbol lookups fail
[babeltrace.git] / m4 / ax_require_defined.m4
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1# ===========================================================================
2# http://www.gnu.org/software/autoconf-archive/ax_require_defined.html
3# ===========================================================================
4#
5# SYNOPSIS
6#
7# AX_REQUIRE_DEFINED(MACRO)
8#
9# DESCRIPTION
10#
11# AX_REQUIRE_DEFINED is a simple helper for making sure other macros have
12# been defined and thus are available for use. This avoids random issues
13# where a macro isn't expanded. Instead the configure script emits a
14# non-fatal:
15#
16# ./configure: line 1673: AX_CFLAGS_WARN_ALL: command not found
17#
18# It's like AC_REQUIRE except it doesn't expand the required macro.
19#
20# Here's an example:
21#
22# AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
23#
24# LICENSE
25#
26# Copyright (c) 2014 Mike Frysinger <vapier@gentoo.org>
27#
28# Copying and distribution of this file, with or without modification, are
29# permitted in any medium without royalty provided the copyright notice
30# and this notice are preserved. This file is offered as-is, without any
31# warranty.
32
33#serial 1
34
35AC_DEFUN([AX_REQUIRE_DEFINED], [dnl
36 m4_ifndef([$1], [m4_fatal([macro ]$1[ is not defined; is a m4 file missing?])])
37])dnl AX_REQUIRE_DEFINED
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