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ax_require_defined

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])

Source Code

Download the latest version of ax_require_defined.m4 or browse the macro’s revision history.

License

Copyright © 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.