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List: cmake
Subject: Re: [CMake] CMAKE_BUILD_TYPE and exact control of compiler options
From: René J. V. Bertin <rjvbertin () gmail ! com>
Date: 2015-10-13 10:52:01
Message-ID: 1444760551.8Lrxd2GGWn () portia ! local
[Download RAW message or body]
Dan Liew wrote:
> Hi,
>
>
> > - If not, what is the best/official way to get exact control over the
> > compiler and linker options used?
>
> I had to do something similar recently where I didn't want
> ``-DNDEBUG`` to be in any of the configurations.
>
> I used ``CMAKE_USER_MAKE_RULES_OVERRIDE `` to set the path to file
> containing overrides, this must be set before calling ``project()``
> I'm not sure if this is really the correct route to go down though for
> your use case.
That wouldn't be impossible. A more generic way to achieve what you did, one
that doesn't require patching "client" CMake files (which I find unacceptable):
Store the customised settings in a file (I'd call it cmake.initcache) and call
cmake as
%> cmake -C./cmake.initcache "$@"
This is an approach I follow with a more basic building workflow of my own, one
where I keep localised/customised settings (CC/CXX, CFLAGS/CXXFLAGS, LDFLAGS
etc) in a ./wconfigure.env file, which is parsed by wrappers to configure and
cmake. It's not a usual approach for MacPorts, though.
R.
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