206 lines
7.7 KiB
CMake
206 lines
7.7 KiB
CMake
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## Utility CMake functions.
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# ----------------------------------------------------------------------------
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## Convert boolean value to 0 or 1
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macro (bool_to_int VAR)
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if (${VAR})
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set (${VAR} 1)
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else ()
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set (${VAR} 0)
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endif ()
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endmacro ()
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# ----------------------------------------------------------------------------
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## Extract version numbers from version string
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function (version_numbers version major minor patch)
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if (version MATCHES "([0-9]+)(\\.[0-9]+)?(\\.[0-9]+)?(rc[1-9][0-9]*|[a-z]+)?")
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if (CMAKE_MATCH_1)
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set (_major ${CMAKE_MATCH_1})
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else ()
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set (_major 0)
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endif ()
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if (CMAKE_MATCH_2)
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set (_minor ${CMAKE_MATCH_2})
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string (REGEX REPLACE "^\\." "" _minor "${_minor}")
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else ()
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set (_minor 0)
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endif ()
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if (CMAKE_MATCH_3)
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set (_patch ${CMAKE_MATCH_3})
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string (REGEX REPLACE "^\\." "" _patch "${_patch}")
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else ()
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set (_patch 0)
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endif ()
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else ()
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set (_major 0)
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set (_minor 0)
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set (_patch 0)
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endif ()
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set ("${major}" "${_major}" PARENT_SCOPE)
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set ("${minor}" "${_minor}" PARENT_SCOPE)
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set ("${patch}" "${_patch}" PARENT_SCOPE)
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endfunction ()
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# ----------------------------------------------------------------------------
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## Determine if cache entry exists
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macro (gflags_is_cached retvar varname)
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if (DEFINED ${varname})
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get_property (${retvar} CACHE ${varname} PROPERTY TYPE SET)
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else ()
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set (${retvar} FALSE)
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endif ()
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endmacro ()
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# ----------------------------------------------------------------------------
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## Add gflags configuration variable
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#
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# The default value of the (cached) configuration value can be overridden either
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# on the CMake command-line or the super-project by setting the GFLAGS_<varname>
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# variable. When gflags is a subproject of another project (GFLAGS_IS_SUBPROJECT),
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# the variable is not added to the CMake cache. Otherwise it is cached.
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macro (gflags_define type varname docstring default)
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# note that ARGC must be expanded here, as it is not a "real" variable
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# (see the CMake documentation for the macro command)
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if ("${ARGC}" GREATER 5)
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message (FATAL_ERROR "gflags_variable: Too many macro arguments")
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endif ()
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if (NOT DEFINED GFLAGS_${varname})
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if (GFLAGS_IS_SUBPROJECT AND "${ARGC}" EQUAL 5)
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set (GFLAGS_${varname} "${ARGV4}")
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else ()
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set (GFLAGS_${varname} "${default}")
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endif ()
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endif ()
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if (GFLAGS_IS_SUBPROJECT)
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if (NOT DEFINED ${varname})
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set (${varname} "${GFLAGS_${varname}}")
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endif ()
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else ()
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set (${varname} "${GFLAGS_${varname}}" CACHE ${type} "${docstring}")
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endif ()
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endmacro ()
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# ----------------------------------------------------------------------------
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## Set property of cached gflags configuration variable
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macro (gflags_property varname property value)
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gflags_is_cached (_cached ${varname})
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if (_cached)
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# note that property must be expanded here, as it is not a "real" variable
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# (see the CMake documentation for the macro command)
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if ("${property}" STREQUAL "ADVANCED")
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if (${value})
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mark_as_advanced (FORCE ${varname})
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else ()
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mark_as_advanced (CLEAR ${varname})
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endif ()
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else ()
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set_property (CACHE ${varname} PROPERTY "${property}" "${value}")
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endif ()
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endif ()
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unset (_cached)
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endmacro ()
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# ----------------------------------------------------------------------------
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## Modify value of gflags configuration variable
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macro (gflags_set varname value)
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gflags_is_cached (_cached ${varname})
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if (_cached)
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set_property (CACHE ${varname} PROPERTY VALUE "${value}")
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else ()
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set (${varname} "${value}")
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endif ()
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unset (_cached)
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endmacro ()
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# ----------------------------------------------------------------------------
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## Configure public header files
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function (configure_headers out)
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set (tmp)
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foreach (src IN LISTS ARGN)
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if (IS_ABSOLUTE "${src}")
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list (APPEND tmp "${src}")
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elseif (EXISTS "${PROJECT_SOURCE_DIR}/src/${src}.in")
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configure_file ("${PROJECT_SOURCE_DIR}/src/${src}.in" "${PROJECT_BINARY_DIR}/include/${GFLAGS_INCLUDE_DIR}/${src}" @ONLY)
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list (APPEND tmp "${PROJECT_BINARY_DIR}/include/${GFLAGS_INCLUDE_DIR}/${src}")
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else ()
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configure_file ("${PROJECT_SOURCE_DIR}/src/${src}" "${PROJECT_BINARY_DIR}/include/${GFLAGS_INCLUDE_DIR}/${src}" COPYONLY)
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list (APPEND tmp "${PROJECT_BINARY_DIR}/include/${GFLAGS_INCLUDE_DIR}/${src}")
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endif ()
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endforeach ()
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set (${out} "${tmp}" PARENT_SCOPE)
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endfunction ()
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# ----------------------------------------------------------------------------
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## Configure source files with .in suffix
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function (configure_sources out)
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set (tmp)
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foreach (src IN LISTS ARGN)
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if (src MATCHES ".h$" AND EXISTS "${PROJECT_SOURCE_DIR}/src/${src}.in")
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configure_file ("${PROJECT_SOURCE_DIR}/src/${src}.in" "${PROJECT_BINARY_DIR}/include/${GFLAGS_INCLUDE_DIR}/${src}" @ONLY)
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list (APPEND tmp "${PROJECT_BINARY_DIR}/include/${GFLAGS_INCLUDE_DIR}/${src}")
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else ()
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list (APPEND tmp "${PROJECT_SOURCE_DIR}/src/${src}")
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endif ()
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endforeach ()
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set (${out} "${tmp}" PARENT_SCOPE)
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endfunction ()
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# ----------------------------------------------------------------------------
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## Add usage test
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#
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# Using PASS_REGULAR_EXPRESSION and FAIL_REGULAR_EXPRESSION would
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# do as well, but CMake/CTest does not allow us to specify an
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# expected exit status. Moreover, the execute_test.cmake script
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# sets environment variables needed by the --fromenv/--tryfromenv tests.
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macro (add_gflags_test name expected_rc expected_output unexpected_output cmd)
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set (args "--test_tmpdir=${PROJECT_BINARY_DIR}/Testing/Temporary"
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"--srcdir=${PROJECT_SOURCE_DIR}/test")
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add_test (
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NAME ${name}
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COMMAND "${CMAKE_COMMAND}" "-DCOMMAND:STRING=$<TARGET_FILE:${cmd}>;${args};${ARGN}"
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"-DEXPECTED_RC:STRING=${expected_rc}"
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"-DEXPECTED_OUTPUT:STRING=${expected_output}"
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"-DUNEXPECTED_OUTPUT:STRING=${unexpected_output}"
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-P "${PROJECT_SOURCE_DIR}/cmake/execute_test.cmake"
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WORKING_DIRECTORY "${GFLAGS_FLAGFILES_DIR}"
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)
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endmacro ()
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# ------------------------------------------------------------------------------
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## Register installed package with CMake
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#
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# This function adds an entry to the CMake registry for packages with the
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# path of the directory where the package configuration file of the installed
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# package is located in order to help CMake find the package in a custom
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# installation prefix. This differs from CMake's export(PACKAGE) command
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# which registers the build directory instead.
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function (register_gflags_package CONFIG_DIR)
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if (NOT IS_ABSOLUTE "${CONFIG_DIR}")
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set (CONFIG_DIR "${CMAKE_INSTALL_PREFIX}/${CONFIG_DIR}")
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endif ()
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string (MD5 REGISTRY_ENTRY "${CONFIG_DIR}")
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if (WIN32)
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install (CODE
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"execute_process (
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COMMAND reg add \"HKCU\\\\Software\\\\Kitware\\\\CMake\\\\Packages\\\\${PACKAGE_NAME}\" /v \"${REGISTRY_ENTRY}\" /d \"${CONFIG_DIR}\" /t REG_SZ /f
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RESULT_VARIABLE RT
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ERROR_VARIABLE ERR
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OUTPUT_QUIET
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)
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if (RT EQUAL 0)
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message (STATUS \"Register: Added HKEY_CURRENT_USER\\\\Software\\\\Kitware\\\\CMake\\\\Packages\\\\${PACKAGE_NAME}\\\\${REGISTRY_ENTRY}\")
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else ()
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string (STRIP \"\${ERR}\" ERR)
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message (STATUS \"Register: Failed to add registry entry: \${ERR}\")
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endif ()"
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)
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elseif (IS_DIRECTORY "$ENV{HOME}")
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file (WRITE "${PROJECT_BINARY_DIR}/${PACKAGE_NAME}-registry-entry" "${CONFIG_DIR}")
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install (
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FILES "${PROJECT_BINARY_DIR}/${PACKAGE_NAME}-registry-entry"
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DESTINATION "$ENV{HOME}/.cmake/packages/${PACKAGE_NAME}"
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RENAME "${REGISTRY_ENTRY}"
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)
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endif ()
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endfunction ()
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