990c6b0b90
Some native build tools, particularly those for cross compiling, may have a limit on the length of the full path to an object file name that is lower than the platform otherwise supports. This change allows the limit to be set by the project toolchain file through the variable CMAKE_OBJECT_PATH_MAX.
57 lines
2.2 KiB
CMake
57 lines
2.2 KiB
CMake
INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR})
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IF ("${PROJECT_SOURCE_DIR}" STREQUAL "${ANOTHER_PROJ_SOURCE_DIR}")
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SET(BUILD_SHARED_LIBS 1)
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# Construct a source file outside the tree whose full path is close to
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# the path length limit. This will cause the full path to the object
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# file in the build tree to exceed the maximum path length which will
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# test cmLocalGenerator::CreateSafeUniqueObjectFileName.
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GET_FILENAME_COMPONENT(DEEPDIR
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${OutOfSource_BINARY_DIR}/../OutOfSourceDeep/deeper ABSOLUTE)
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# Test giving the generator a custom limit.
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SET(CMAKE_OBJECT_PATH_MAX 220)
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# Use a separate variable for computation.
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SET(MAXPATH "${CMAKE_OBJECT_PATH_MAX}")
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# VS8 adds "OutOfSource/SubDir/OutOfSourceSubdir/../../../" to the
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# path of the source file for no good reason. Reduce the length
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# limit by 46 characters to account for it. It should still be long
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# enough to require special object file name conversion.
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IF(${CMAKE_GENERATOR} MATCHES "Visual Studio 8")
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MATH(EXPR MAXPATH "${MAXPATH} - 46")
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ENDIF(${CMAKE_GENERATOR} MATCHES "Visual Studio 8")
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# MAXPATH less 25 for last /and/deeper/simple.cxx part and small safety
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MATH(EXPR MAXPATH "${MAXPATH} - 25")
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STRING(LENGTH "${DEEPDIR}" DEEPDIR_LEN)
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WHILE("${DEEPDIR_LEN}" LESS "${MAXPATH}")
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SET(DEEPDIR ${DEEPDIR}/and/deeper)
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STRING(LENGTH "${DEEPDIR}" DEEPDIR_LEN)
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ENDWHILE("${DEEPDIR_LEN}" LESS "${MAXPATH}")
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SET(DEEPSRC ${DEEPDIR}/simple.cxx)
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STRING(LENGTH "${DEEPSRC}" DEEPSRC_LEN)
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CONFIGURE_FILE(simple.cxx.in ${DEEPSRC} COPYONLY)
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# Watcom WMake seems to have problems with long command lines. Just
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# disable this part of the test until it is resolved.
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IF(${CMAKE_GENERATOR} MATCHES "Watcom WMake")
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SET(DEEPSRC "")
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ADD_DEFINITIONS(-DNO_DEEPSRC)
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ENDIF(${CMAKE_GENERATOR} MATCHES "Watcom WMake")
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ADD_LIBRARY(testlib testlib.cxx)
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ADD_EXECUTABLE (simple simple.cxx ../simple.cxx ${DEEPSRC})
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TARGET_LINK_LIBRARIES(simple testlib outlib)
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ENDIF ("${PROJECT_SOURCE_DIR}" STREQUAL "${ANOTHER_PROJ_SOURCE_DIR}")
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# test getting a definition from a subdir
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SET (WEASELS SIZZLING)
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GET_DIRECTORY_PROPERTY(incDirs INCLUDE_DIRECTORIES)
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IF(NOT incDirs)
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MESSAGE(FATAL_ERROR "GET_DIRECTORY_PROPERTY(INCLUDE_DIRECTORIES) returned empty list")
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ENDIF(NOT incDirs)
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