[CMake] "Toolchain" for native builds

[Adolfo Rodríguez]

One alternative that comes into my mind would be to invoke cmake like

cmake -C initialCache.cmake

where initialCache.cmake is a script that preloads a set of cache variables,
i.e., with entries like
set(CMAKE_CXX_COMPILER icpc CACHE STRING "CXX compiler." FORCE)

Would this accomplish what you want?

Adolfo.

On Fri, Jul 10, 2009 at 1:06 AM, S. Levent Yilmaz <leventyilmaz at gmail.com>wrote:

> This question was asked a while ago:
> http://www.cmake.org/pipermail/cmake/2009-June/030404.html with no
> definitive answer..
> So, I'll try to raise this issue from a different angle, perhaps this will
> make more sense to the developers.
>
> Take a look at this line:
>
> cmake \
>    -DCMAKE_CXX_COMPILER=icpc \
>    -DCMAKE_C_COMPILER=icc \
>    -DCMAKE_Fortran_COMPILER=ifort \
>    -DCMAKE_CXX_FLAGS_RELWITHDEBINFO='-O2 -g -debug inline-debug-info'  \
>    -DCMAKE_C_FLAGS_RELWITHDEBINFO='-O2 -g -debug inline-debug-info'  \
>    -DCMAKE_Fortran_FLAGS_RELWITHDEBINFO='-O2 -g -debug inline-debug-info'
>  \
>    -DBLA_VENDOR=Intel \
>    -DBLA_BLA \
>    /path/to/source
>
> Now, the thing I want to emphasize about this "configuration" line is that
> the settings are not specific to a given project. It just "activates" a
> custom compiler suite. Another perfectly reasonable scenario is further
> refinements made for specific platforms. And, really, compilation being
> cross or native is an orthogonal issue here.
>
> The earlier dialog was:
>
> >> [Will Dicharry wrote:]
>
> >> Am I misusing the toolchain file capability?
>
> > [Bill Hoffman wrote:]
>
> > Yes, that should only be used for cross-compiling.
>
> > To set the compilers you can set the environment variables FC, CC,
>> and CXX before running CMake.
>
>
> So, now my question is, how can I reduce the above cmake configure line
> muddied with plethora of compiler (and/or platform) specific definitions (or
> preceding environment variables for that matter) into:
>
> cmake -DCMAKE_OK_NOT_TOOLCHAIN_BUT_WHAT_FILE=site/macros/intel.cmake
> /path/to/source
>
> ?
>
> Levent
>
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-- 
Adolfo Rodríguez Tsouroukdissian

Robotics engineer
PAL ROBOTICS S.L
http://www.pal-robotics.com
Tel. +34.93.414.53.47
Fax.+34.93.209.11.09
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