[cmake-developers] [CMake 0014060]: FindGLUT puts NOTFOUND in GLUT_LIBRARIES

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=14060 
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Reported By:                Marcel Loose
Assigned To:                
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Project:                    CMake
Issue ID:                   14060
Category:                   Modules
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2013-04-04 08:16 EDT
Last Modified:              2013-04-04 08:16 EDT
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Summary:                    FindGLUT puts NOTFOUND in GLUT_LIBRARIES
Description: 
FindGLUT puts GLUT_Xmu_LIBRARY-NOTFOUND;GLUT_Xi_LIBRARY-NOTFOUND in the variable
GLUT_LIBRARIES, when GLUT_FOUND is TRUE.

This causes CMake to bail out with the following error:

CMake Error: The following variables are used in this project, but they are set
to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake
files:
GLUT_Xi_LIBRARY (ADVANCED)
    linked by target "foo" in directory /home/marcel/temp/cmake/findglut-bug
GLUT_Xmu_LIBRARY (ADVANCED)
    linked by target "foo" in directory /home/marcel/temp/cmake/findglut-bug


Steps to Reproduce: 
1. Create a CMakeLists.txt file that contains the following:

cmake_minimum_required(VERSION 2.8)
project(FindGLUT_Bug C)
find_package(GLUT)
if(GLUT_FOUND)
  add_executable(foo foo.c)
  target_link_libraries(foo ${GLUT_LIBRARIES})
endif()

2. Create a (empty) file foo.c

3. Run cmake


Additional Information: 
This bug is also present in cmake 2.8.9. Older versions of cmake (e.g. 2.8.0)
set GLUT_FOUND to FALSE, which is probably also not what you'd want, because if
I remove the NOTFOUND entries from GLUT_LIBRARIES, everything works fine.

Workaround:

set(_glut_libraries)
foreach(_lib ${GLUT_LIBRARIES})
  if(_lib)
    list(APPEND _glut_libraries ${_lib})
  endif()
endforeach()
set(GLUT_LIBRARIES ${_glut_libraries})

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Issue History 
Date Modified    Username       Field                    Change               
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2013-04-04 08:16 Marcel Loose   New Issue                                    
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