c3-lang/libffi/m4/ax_require_defined.m4

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• Hash : f31b9153
  Author :
  Date : 2018-03-18T15:13:21
  

  Add m4/ax_require_defined.m4
  

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• m4/ax_require_defined.m4

• # ===========================================================================
  #    https://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 2
  
  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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