[cmake-developers] [CMake 0013038]: cannot set CMAKE_AR when cross-compiling Fortran-only project

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=13038 
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Reported By:                Marcin Wojdyr
Assigned To:                
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Project:                    CMake
Issue ID:                   13038
Category:                   CMake
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
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Date Submitted:             2012-03-12 13:04 EDT
Last Modified:              2012-03-12 13:04 EDT
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Summary:                    cannot set CMAKE_AR when cross-compiling
Fortran-only project
Description: 
I'm trying to cross-compile LAPACK 3.4.0 on Fedora using MinGW cross-compiler.
Binutils paths are not set correctly.

The CMAKE_AR in cache file is set to /usr/bin/ar, even if I explicitly set in
toolchain file
SET(CMAKE_AR:FILEPATH /usr/bin/i686-pc-mingw32-ar)
or
SET(CMAKE_AR /usr/bin/i686-pc-mingw32-ar)

The only way to have the paths set correctly is to do:
SET(_CMAKE_TOOLCHAIN_PREFIX i686-pc-mingw32-)
but this is cmake internal variable.

I don't know cmake well, so I may be wrong, but I'd suppose there are two issues
here.

1. _CMAKE_TOOLCHAIN_PREFIX is set in CMakeDetermineCCompiler and
CMakeDetermineCXXCompiler.cmake, but not in CMakeDetermineFortranCompiler.
Most of Fortran projects use also C, so it is set anyway, but LAPACK has only
Fortran.

2. CMAKE_AR and CMAKE_RANLIB set explicitly are not respected.

Last note: it used to work, I cross-compiled this or previous lapack version
with cmake 2.8.5 or 6.
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Issue History 
Date Modified    Username       Field                    Change               
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2012-03-12 13:04 Marcin Wojdyr  New Issue                                    
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