[CMake] Setting the compiler

[Alan W. Irwin]

On 2007-07-27 14:09-0500 Juan Sanchez wrote:

> I'm evaluating CMAKE for use by our group and I am running into an issue
> with selecting the compiler.
>
> Is there any way to set the compiler and flags in the CMakeLists.txt
> file?  This information appears to be ignored.  The FAQ as well as the
> book suggest setting environment variables.
>
> We have a script which we can use to determine the platform we are on,
> but setting CMAKE_CXX_COMPILER in the if block of the CMakeLists.txt is
> ignored.

If you are using ENABLE_LANGUAGE, then you may be a victim of bug 4772 where
I give some simple demonstrations of how C or C++ flags are not set properly
if either language is enabled with ENABLE_LANGUAGE.  Until this bug is
fixed, the only way currently to get complete language support is to avoid
using ENABLE_LANGUAGE.  Instead, specify the language in the PROJECT command
by using, e.g.,

PROJECT(test)

which by default gives proper language support for C and C++.
Alternatively, if you want non-default languages supported then
use, e.g.,

Project(test C Fortran)

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
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Linux-powered Science
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