166 lines
4.8 KiB
CMake
166 lines
4.8 KiB
CMake
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if(NOT DEFINED CMake_SOURCE_DIR)
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message(FATAL_ERROR "CMake_SOURCE_DIR not defined")
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endif()
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if(NOT DEFINED dir)
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message(FATAL_ERROR "dir not defined")
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endif()
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if(NOT DEFINED gen)
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message(FATAL_ERROR "gen not defined")
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endif()
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# Call cmake once to get a baseline/reference output build tree: "Build".
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# Then call cmake N more times, each time making a copy of the entire
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# build tree after cmake is done configuring/generating. At the end,
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# analyze the diffs in the generated build trees. Expect no diffs.
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#
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message(STATUS "CTEST_FULL_OUTPUT (Avoid ctest truncation of output)")
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set(N 7)
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# First setup source and binary trees:
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#
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execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory
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${dir}/Source
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)
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execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory
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${dir}/Build
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)
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory
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${CMake_SOURCE_DIR}/Tests/CTestTest/SmallAndFast
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${dir}/Source
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)
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execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory
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${dir}/Build
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)
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# Patch SmallAndFast to build a .cxx executable too:
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#
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy
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${dir}/Source/echoargs.c
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${dir}/Source/echoargs.cxx
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)
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file(APPEND "${dir}/Source/CMakeLists.txt" "\nadd_executable(echoargsCXX echoargs.cxx)\n")
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# Loop N times, saving a copy of the configured/generated build tree each time:
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#
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foreach(i RANGE 1 ${N})
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# Equivalent sequence of shell commands:
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#
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message(STATUS "${i}: cd Build && cmake -G \"${gen}\" ../Source && cd .. && cp -r Build b${i}")
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# Run cmake:
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#
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execute_process(COMMAND ${CMAKE_COMMAND} -G ${gen} ../Source
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RESULT_VARIABLE result
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OUTPUT_VARIABLE stdout
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ERROR_VARIABLE stderr
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WORKING_DIRECTORY ${dir}/Build
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)
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message(STATUS "result='${result}'")
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message(STATUS "stdout='${stdout}'")
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message(STATUS "stderr='${stderr}'")
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message(STATUS "")
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# Save this iteration of the Build directory:
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#
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execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory
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${dir}/b${i}
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)
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory
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${dir}/Build
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${dir}/b${i}
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RESULT_VARIABLE result
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OUTPUT_VARIABLE stdout
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ERROR_VARIABLE stderr
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)
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message(STATUS "result='${result}'")
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message(STATUS "stdout='${stdout}'")
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message(STATUS "stderr='${stderr}'")
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message(STATUS "")
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endforeach()
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# Function to analyze diffs between two directories.
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# Set DIFF_EXECUTABLE before calling if 'diff' is available.
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#
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function(analyze_directory_diffs d1 d2 diff_count_var)
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set(diffs 0)
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message(STATUS "Analyzing directory diffs between:")
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message(STATUS " d1='${d1}'")
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message(STATUS " d2='${d2}'")
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if(NOT "${d1}" STREQUAL "" AND NOT "${d2}" STREQUAL "")
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message(STATUS "info: analyzing directories")
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file(GLOB_RECURSE files1 RELATIVE "${d1}" "${d1}/*")
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file(GLOB_RECURSE files2 RELATIVE "${d2}" "${d2}/*")
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if("${files1}" STREQUAL "${files2}")
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message(STATUS "info: file lists the same")
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#message(STATUS " files='${files1}'")
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foreach(f ${files1})
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execute_process(COMMAND ${CMAKE_COMMAND} -E compare_files
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${d1}/${f}
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${d2}/${f}
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RESULT_VARIABLE result
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OUTPUT_VARIABLE stdout
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ERROR_VARIABLE stderr
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)
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if(result STREQUAL 0)
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#message(STATUS "info: file '${f}' the same")
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else()
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math(EXPR diffs "${diffs} + 1")
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message(STATUS "warning: file '${f}' differs from d1 to d2")
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file(READ "${d1}/${f}" f1contents)
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message(STATUS "contents of file '${d1}/${f}'
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[===[${f1contents}]===]")
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file(READ "${d2}/${f}" f2contents)
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message(STATUS "contents of file '${d2}/${f}'
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[===[${f2contents}]===]")
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if(DIFF_EXECUTABLE)
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message(STATUS "diff of files '${d1}/${f}' '${d2}/${f}'")
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message(STATUS "[====[")
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execute_process(COMMAND ${DIFF_EXECUTABLE} "${d1}/${f}" "${d2}/${f}")
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message(STATUS "]====]")
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endif()
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endif()
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endforeach()
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else()
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math(EXPR diffs "${diffs} + 1")
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message(STATUS "warning: file *lists* differ - some files exist in d1/not-d2 or not-d1/d2...")
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message(STATUS " files1='${files1}'")
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message(STATUS " files2='${files2}'")
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endif()
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endif()
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set(${diff_count_var} ${diffs} PARENT_SCOPE)
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endfunction(analyze_directory_diffs)
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# Analyze diffs between b1:b2, b2:b3, b3:b4, b4:b5 ... bN-1:bN.
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# Expect no diffs.
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#
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find_program(DIFF_EXECUTABLE diff)
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set(total_diffs 0)
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foreach(i RANGE 2 ${N})
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math(EXPR prev "${i} - 1")
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set(count 0)
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analyze_directory_diffs(${dir}/b${prev} ${dir}/b${i} count)
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message(STATUS "diff count='${count}'")
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message(STATUS "")
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math(EXPR total_diffs "${total_diffs} + ${count}")
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endforeach()
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message(STATUS "CMAKE_COMMAND='${CMAKE_COMMAND}'")
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message(STATUS "total_diffs='${total_diffs}'")
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