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   AX_CFLAGS_WARN_ALL   [(shellvar [,default, [A/NA]])]
AX_CXXFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])]
AX_FCFLAGS_WARN_ALL  [(shellvar [,default, [A/NA]])]


Try to find a compiler option that enables most reasonable warnings.

For the GNU compiler it will be -Wall (and -ansi -pedantic) The result is added to the shellvar being CFLAGS, CXXFLAGS, or FCFLAGS by default.

Currently this macro knows about the GCC, Solaris, Digital Unix, AIX, HP-UX, IRIX, NEC SX-5 (Super-UX 10), Cray J90 (Unicos, and Intel compilers. For a given compiler, the Fortran flags are much more experimental than their C equivalents.

   - $1 shell-variable-to-add-to : CFLAGS, CXXFLAGS, or FCFLAGS
 - $2 add-value-if-not-found : nothing
 - $3 action-if-found : add value to shellvariable
 - $4 action-if-not-found : nothing

NOTE: These macros depend on AX_APPEND_FLAG.

Source Code

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


Copyright © 2008 Guido U. Draheim
Copyright © 2010 Rhys Ulerich

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 3 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.

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