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Re: Testing for unknown flags in different compilers

From: Bob Friesenhahn
Subject: Re: Testing for unknown flags in different compilers
Date: Fri, 7 Mar 2014 15:07:05 -0600 (CST)
User-agent: Alpine 2.01 (GSO 1266 2009-07-14)

On Fri, 21 Feb 2014, Eric Blake wrote:

This will still remain true.  And the developer's choice of CFLAGS
should always take precedence over any default flags that autoconf
probes for in the absence of a developer preference.

This statement is one that I definitely believe in but it makes the grave assumption that it is possible to undo/override options specified in left to right order. This works for GCC but definitely not compilers at large. How would compilers be supported which do not provide the ability to remove an already supplied option?

Bob Friesenhahn
GraphicsMagick Maintainer,

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