[cmake-developers] [CMake 0013439]: consecutive find_package(Boost ...) statements only find the static lib regardless of Boost_USE_STATIC_LIBS

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://www.cmake.org/Bug/view.php?id=13439 
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Reported By:                Pieter Swinkels
Assigned To:                
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Project:                    CMake
Issue ID:                   13439
Category:                   CMake
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2012-07-25 17:33 EDT
Last Modified:              2012-07-25 17:33 EDT
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Summary:                    consecutive find_package(Boost ...) statements only
find the static lib regardless of Boost_USE_STATIC_LIBS
Description: 
Consecutive find_package(Boost ...) statements for the same Boost component in
the same file CMakeLists.txt but 

  - the first time with Boost_USE_STATIC_LIBS to ON and 
  - the second time with BOOST_USE_STATIC_LIBS to OFF 

always finds the static library.

Steps to Reproduce: 
Try something like this:

set(Boost_USE_STATIC_LIBS ON)

find_package(Boost COMPONENTS unit_test_framework REQUIRED)
if (Boost_FOUND)
  include_directories(${Boost_INCLUDE_DIRS})
endif (Boost_FOUND)

# ${BOOST_LIBRARIES} contains the static version of the library

add_executable(my-static-find-package-boost-test main-static.cpp)
target_link_libraries(my-static-find-package-boost-test ${Boost_LIBRARIES})

unset(Boost_LIBRARIES)
message("Boost_LIBRARIES: ${Boost_LIBRARIES}")

set(Boost_USE_STATIC_LIBS OFF)

find_package(Boost COMPONENTS unit_test_framework REQUIRED)
if (Boost_FOUND)
  include_directories(${Boost_INCLUDE_DIRS})
endif (Boost_FOUND)

# ${BOOST_LIBRARIES} still contains the static version of the library

add_executable(my-dynamic-find-package-boost-test main-dynamic.cpp)
target_link_libraries(my-dynamic-find-package-boost-test ${Boost_LIBRARIES})


Additional Information: 
It is not that the dynamic library cannot be found. If I uncomment the first
invocation, clear the cache (!) and run cmake, the dynamic library is found.
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Issue History 
Date Modified    Username       Field                    Change               
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2012-07-25 17:33 Pieter SwinkelsNew Issue                                    
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