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Simple wrapper for the AM_MISSING_PROG which displays a warning MESSAGE if provided. A typical use is the following:

  AS_IF([test -z "$AWK"],[
    AX_MISSING_PROG(AWK,[awk],[awk seems missing ...])

Programs wrapped with AX_MISSING_PROG should be used only in the package building phase (because they will be wrapped with the automake ’missing’ script, which will not be installed).

Source Code

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


Copyright © 2008 Francesco Salvestrini

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <>.

As a special exception, the respective Autoconf Macro’s copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts, even though portions of the text of the Macro appear in them. The GNU General Public License (GPL) does govern all other use of the material that constitutes the Autoconf Macro.

This special exception to the GPL applies to versions of the Autoconf Macro released by the Autoconf Archive. When you make and distribute a modified version of the Autoconf Macro, you may extend this special exception to the GPL to apply to your modified version as well.

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