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CMake/Tests/RunCMake/File_Generate/RunCMakeTest.cmake

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file: Add GENERATE command to produce files at generate time The idea is to write to a temp file which contains generator expressions, and at generate time, evaluate the generator expressions, and write the result to a file. Because executables on Windows are limited in the length of command line it is possible to use, it is common to write command line arguments to a file instead and specify the file as a source of arguments. This new FILE(GENERATE) subcommand allows the use of generator expressions to create such files so that they can be used with add_custom_command for example.
2013-01-02 20:10:04 +04:00
include(RunCMake)
run_cmake(CommandConflict)
if("${RunCMake_GENERATOR}" MATCHES "Visual Studio" OR "${RunCMake_GENERATOR}" MATCHES "XCode" )
run_cmake(OutputConflict)
endif()
run_cmake(EmptyCondition1)
run_cmake(EmptyCondition2)
run_cmake(BadCondition)
run_cmake(DebugEvaluate)
file(GENERATE): Only write the file if content is different. No policy is used to control this behavior for now.
2014-04-25 22:11:05 +04:00
set(timeformat "%Y%j%H%M%S")
file(REMOVE "${RunCMake_BINARY_DIR}/WriteIfDifferent-build/output_file.txt")
set(RunCMake_TEST_FILE "WriteIfDifferent")
set(RunCMake_TEST_BINARY_DIR "${RunCMake_BINARY_DIR}/WriteIfDifferent-build")
run_cmake(WriteIfDifferent-prepare)
unset(RunCMake_TEST_FILE)
unset(RunCMake_TEST_BINARY_DIR)
file(TIMESTAMP "${RunCMake_BINARY_DIR}/WriteIfDifferent-build/output_file.txt" timestamp ${timeformat})
if(NOT timestamp)
message(SEND_ERROR "Could not get timestamp for \"${RunCMake_BINARY_DIR}/WriteIfDifferent-build/output_file.txt\"")
endif()
execute_process(COMMAND ${CMAKE_COMMAND} -E sleep 1)
set(RunCMake_TEST_NO_CLEAN ON)
run_cmake(WriteIfDifferent)
file(TIMESTAMP "${RunCMake_BINARY_DIR}/WriteIfDifferent-build/output_file.txt" timestamp_after ${timeformat})
if(NOT timestamp_after)
message(SEND_ERROR "Could not get timestamp for \"${RunCMake_BINARY_DIR}/WriteIfDifferent-build/output_file.txt\"")
endif()
unset(RunCMake_TEST_NO_CLEAN)
if (NOT timestamp_after STREQUAL timestamp)
message(SEND_ERROR "WriteIfDifferent changed output file.")
endif()