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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
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