MantisBT - CMake
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IDProjectCategoryView StatusDate SubmittedLast Update
0016039CMakeCMakepublic2016-03-30 15:052016-06-10 14:21
ReporterMelven Roehrig-Zoellner 
Assigned To 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionno change required 
PlatformOSWindowsOS Version
Product VersionCMake 3.5 
Target VersionFixed in Version 
Summary0016039: if( languages MATCHES c) always true for pure Fortran projects
DescriptionA lot of Modules (for example findBLAS.cmake, findLAPACK.cmake) do checks of the form:

get_property( _LANGUAGES_ GLOBAL PROPERTY ENABLED_LANGUAGES )
if( _LANGUAGES_ MATCHES C )
...

Even in pure Fortran projects this is always true on windows systems as the RC language is added automatically (and Fortran;RC MATCHES C).
Steps To ReproduceCreate a pure Fortran project and call find_package(LAPACK).
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Issue History
Date ModifiedUsernameFieldChange
2016-03-30 15:05Melven Roehrig-ZoellnerNew Issue
2016-03-30 15:51Ben BoeckelNote Added: 0040770
2016-03-30 16:14Melven Roehrig-ZoellnerNote Added: 0040771
2016-03-30 16:30Ben BoeckelNote Added: 0040772
2016-04-01 08:46Melven Roehrig-ZoellnerNote Added: 0040789
2016-04-01 11:27Rolf Eike BeerNote Added: 0040797
2016-04-01 11:27Rolf Eike BeerSeveritymajor => minor
2016-04-01 11:27Rolf Eike BeerStatusnew => resolved
2016-04-01 11:27Rolf Eike BeerResolutionopen => no change required
2016-04-05 10:03Brad KingNote Added: 0040813
2016-06-10 14:21Kitware RobotNote Added: 0041201
2016-06-10 14:21Kitware RobotStatusresolved => closed

Notes
(0040770)
Ben Boeckel   
2016-03-30 15:51   
That kind of check is wrong and should instead use list(FIND) to see if the language is enabled.
(0040771)
Melven Roehrig-Zoellner   
2016-03-30 16:14   
Ok, then this is just a bug in FindBLAS.cmake and FindLAPACK.cmake...
(0040772)
Ben Boeckel   
2016-03-30 16:30   
Hrm, would seem so. I'll try out a patch here.
(0040789)
Melven Roehrig-Zoellner   
2016-04-01 08:46   
I've sent a patch to the developers Mailing list; I hope we didn't do the same work twice...
(0040797)
Rolf Eike Beer   
2016-04-01 11:27   
cmake --help-variable 'CMAKE_<LANG>_COMPILER_LOADED'

-> if (CMAKE_Fortran_COMPILER_LOADED)
(0040813)
Brad King   
2016-04-05 10:03   
Find{BLAS,LAPACK}: Fix when used in pure Fortran projects
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=1694112d [^]
(0041201)
Kitware Robot   
2016-06-10 14:21   
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