MantisBT - CMake
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IDProjectCategoryView StatusDate SubmittedLast Update
0012426CMake(No Category)public2011-08-27 12:502016-06-10 14:31
ReporterStephen Kelly 
Assigned ToAlex Neundorf 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Summary0012426: cmake --find-package doesn't seem to set language correctly
DescriptionI also note that it creates some output files in $PWD which it does not clear up afterward.

kde-devel@bishop:~/dev/src/kf5/tier1/itemmodels{frameworks}$ cmake --find-package -DNAME=Grantlee -DCOMPILER_ID=GNU -DLANGUAGE=CXX -DMODE=EXIST
CMake Error at /home/kde-devel/dev/qt47/kde46/share/cmake-2.8/Modules/CheckSymbolExists.cmake:69 (TRY_COMPILE):
  Unknown extension ".cxx" for file

    /home/kde-devel/dev/src/kf5/tier1/itemmodels/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx

  try_compile() works only for enabled languages. Currently these are:

   

  See project() command to enable other languages.
Call Stack (most recent call first):
  /home/kde-devel/dev/qt47/kde46/share/cmake-2.8/Modules/CheckCXXSymbolExists.cmake:41 (_CHECK_SYMBOL_EXISTS)
  /home/kde-devel/dev/qt47/kde46/share/cmake-2.8/Modules/FindQt4.cmake:718 (CHECK_CXX_SYMBOL_EXISTS)
  /home/kde-devel/dev/qt47/kde46/lib/cmake/grantlee/GrantleeConfig.cmake:19 (find_package)
  /home/kde-devel/dev/qt47/kde46/share/cmake-2.8/Modules/CMakeFindPackageMode.cmake:166 (find_package)


Grantlee not found.
CMake Error: Problem processing arguments. Aborting.
Steps To Reproduce
Additional Information
TagsNo tags attached.
Relationships
child of 0014676closed Alex Neundorf cmake --find-package summary ticket 
Attached Files
Issue History
Date ModifiedUsernameFieldChange
2011-08-27 12:50Stephen KellyNew Issue
2011-08-29 10:09Brad KingAssigned To => Alex Neundorf
2011-08-29 10:09Brad KingStatusnew => assigned
2011-09-12 17:11Alex NeundorfNote Added: 0027410
2011-09-12 17:12Alex NeundorfPrioritynormal => high
2011-09-12 17:12Alex NeundorfDescription Updatedbug_revision_view_page.php?rev_id=416#r416
2011-09-16 07:41Alex NeundorfNote Added: 0027432
2011-09-16 10:40Stephen KellyNote Added: 0027433
2011-09-16 18:25Alex NeundorfNote Added: 0027442
2012-08-13 14:32Alex NeundorfPriorityhigh => normal
2012-08-13 14:32Alex NeundorfStatusassigned => backlog
2014-01-01 12:21Alex NeundorfRelationship addedchild of 0014676
2016-06-10 14:28Kitware RobotNote Added: 0041894
2016-06-10 14:28Kitware RobotStatusbacklog => resolved
2016-06-10 14:28Kitware RobotResolutionopen => moved
2016-06-10 14:31Kitware RobotStatusresolved => closed

Notes
(0027410)
Alex Neundorf   
2011-09-12 17:11   
Hmm, this is not an easy one...

It does a try_compile(), and try_compile() needs a fully set up toolchain. But most of this is skipped in this mode.

Alex
(0027432)
Alex Neundorf   
2011-09-16 07:41   
I merged a fix into next, which gives a better error message:
"The TRY_COMPILE() command is not supported in --find-package mode."

This doesn't make it work, but IMO is much better.
This means some modules do not work in --find-package mode.
But I'd consider this good enough for releasing as a first version.

What do you think ?

Alex
(0027433)
Stephen Kelly   
2011-09-16 10:40   
I think it depends on whether it's fixable. In the current state, even attempting to find Qt will fail.

cmake --find-package -DNAME=Qt -DCOMPILER_ID=GNU -DLANGUAGE=CXX -DMODE=EXIST

I'm not familiar with why it doesn't more fully set up a toolchain (speed?), but if that can be fixed in the future maybe it's ok.

In the current state anything using struct_has_member, check_symbol_exists etc will not work. I don't know how common that is in find files or config files, but if it's common, then I don't think there's any rush to put the feature into cmake until the issue is resolved.
(0027442)
Alex Neundorf   
2011-09-16 18:25   
FindQt4.cmake is probably the most complex Find-module coming with cmake.
Ok, boost maybe.

Config-files should not have those tests, since they should know what features the package they belong to have.
So I also had the idea to support only Config-mode, but as it is now, additionally also Find-module which don't have any try_compile()s will work.
(0041894)
Kitware Robot   
2016-06-10 14:28   
Resolving issue as `moved`.

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