kc3-lang/libjpeg-turbo/sharedlib/CMakeLists.txt

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• Hash : 942ac87e
  Author :
  Date : 2025-06-14T07:45:48
  

  Build: Allow disabling tests/command-line tools
  
  This is useful for downstream projects that include libjpeg-turbo via
  ExternalProject_Add().
  
  Closes #818
  

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• sharedlib/CMakeLists.txt

• # Anything that must be linked against the shared C library on Windows must
  # be built in this subdirectory, because CMake doesn't allow us to override
  # the compiler flags for each build type except at directory scope.  Note
  # to CMake developers:  Add a COMPILE_FLAGS_<CONFIG> target property, or
  # better yet, provide a friendly way of configuring a Windows target to use the
  # static C library.
  
  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/..)
  set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/..)
  set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/..)
  
  if(MSVC_LIKE)
    # Build all configurations against shared C library
    if(CMAKE_VERSION VERSION_EQUAL "3.15" OR
      CMAKE_VERSION VERSION_GREATER "3.15")
      if(CMAKE_BUILD_TYPE_UC STREQUAL "DEBUG")
        set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreadedDebugDLL)
      elseif(MSVC_IDE)
        set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
      else()
        set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreadedDLL)
      endif()
      message(STATUS "Visual C++ run-time library for libjpeg API DLL: ${CMAKE_MSVC_RUNTIME_LIBRARY}")
    elseif(MSVC)
      foreach(var CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
        CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
        if(${var} MATCHES "/MT")
          string(REGEX REPLACE "/MT" "/MD" ${var} "${${var}}")
        endif()
      endforeach()
    endif()
  endif()
  
  foreach(src ${JPEG_SOURCES})
    set(JPEG_SRCS ${JPEG_SRCS} ../${src})
  endforeach()
  
  if(WITH_SIMD AND (MSVC_IDE OR XCODE))
    # This tells CMake that the "source" files haven't been generated yet
    set_source_files_properties(${SIMD_OBJS} PROPERTIES GENERATED 1)
  endif()
  
  if(WIN32)
    set(DEFFILE ../win/jpeg${SO_MAJOR_VERSION}.def)
  endif()
  if(MSVC_LIKE)
    configure_file(${CMAKE_SOURCE_DIR}/win/jpeg.rc.in
      ${CMAKE_BINARY_DIR}/win/jpeg.rc)
    set(JPEG_SRCS ${JPEG_SRCS} ${CMAKE_BINARY_DIR}/win/jpeg.rc)
  endif()
  add_library(jpeg SHARED ${JPEG_SRCS} ${DEFFILE} ${SIMD_TARGET_OBJECTS}
    ${SIMD_OBJS})
  
  set_target_properties(jpeg PROPERTIES SOVERSION ${SO_MAJOR_VERSION}
    VERSION ${SO_MAJOR_VERSION}.${SO_AGE}.${SO_MINOR_VERSION})
  if(APPLE AND (NOT CMAKE_OSX_DEPLOYMENT_TARGET OR
                CMAKE_OSX_DEPLOYMENT_TARGET VERSION_GREATER 10.4))
    if(NOT CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG)
      set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")
    endif()
    set_target_properties(jpeg PROPERTIES MACOSX_RPATH 1)
  endif()
  if(MAPFLAG)
    set_target_properties(jpeg PROPERTIES
      LINK_FLAGS "${MAPFLAG}${CMAKE_CURRENT_BINARY_DIR}/../libjpeg.map")
  endif()
  if(MSVC_LIKE)
    set_target_properties(jpeg PROPERTIES
      RUNTIME_OUTPUT_NAME jpeg${SO_MAJOR_VERSION})
    # The jsimd_*.c file is built to use libcmt or libcmtd, so this prevents a
    # linker warning.
    if(MSVC)
      set_target_properties(jpeg PROPERTIES LINK_FLAGS
        "/NODEFAULTLIB:LIBCMT /NODEFAULTLIB:LIBCMTD")
    else()
      set_target_properties(jpeg PROPERTIES LINK_FLAGS
        "-Wl,-nodefaultlib:libcmt -Wl,-nodefaultlib:libcmtd")
    endif()
  elseif(MINGW)
    set_target_properties(jpeg PROPERTIES SUFFIX -${SO_MAJOR_VERSION}.dll)
  endif()
  
  if(WITH_TOOLS)
    if(WIN32)
      set(USE_SETMODE "-DUSE_SETMODE")
    endif()
    set(CDJPEG_COMPILE_FLAGS
      "-DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED -DTARGA_SUPPORTED ${USE_SETMODE}")
  
    add_executable(cjpeg ../src/cjpeg.c ../src/cdjpeg.c ../src/rdbmp.c
      ../src/rdgif.c
      ../src/wrapper/rdppm-8.c ../src/wrapper/rdppm-12.c
      ../src/wrapper/rdppm-16.c
      ../src/rdswitch.c ../src/rdtarga.c)
    set_property(TARGET cjpeg PROPERTY COMPILE_FLAGS ${CDJPEG_COMPILE_FLAGS})
    target_link_libraries(cjpeg jpeg)
  
    add_executable(djpeg ../src/djpeg.c ../src/cdjpeg.c
      ../src/wrapper/rdcolmap-8.c ../src/wrapper/rdcolmap-12.c
      ../src/rdswitch.c ../src/wrbmp.c
      ../src/wrapper/wrgif-8.c ../src/wrapper/wrgif-12.c
      ../src/wrapper/wrppm-8.c ../src/wrapper/wrppm-12.c
      ../src/wrapper/wrppm-16.c
      ../src/wrtarga.c)
    set_property(TARGET djpeg PROPERTY COMPILE_FLAGS ${CDJPEG_COMPILE_FLAGS})
    target_link_libraries(djpeg jpeg)
  
    add_executable(jpegtran ../src/jpegtran.c ../src/cdjpeg.c ../src/rdswitch.c
      ../src/transupp.c)
    target_link_libraries(jpegtran jpeg)
    set_property(TARGET jpegtran PROPERTY COMPILE_FLAGS "${USE_SETMODE}")
  endif()
  
  if(WITH_TESTS)
    add_executable(example ../src/example.c)
    target_link_libraries(example jpeg)
  
    add_executable(jcstest ../src/jcstest.c)
    target_link_libraries(jcstest jpeg)
  endif()
  
  install(TARGETS jpeg EXPORT ${CMAKE_PROJECT_NAME}Targets
    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT lib
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT lib
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT bin)
  if(WITH_TOOLS)
    install(TARGETS cjpeg djpeg jpegtran
      RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT bin)
  endif()
  if(NOT CMAKE_VERSION VERSION_LESS "3.1" AND MSVC_LIKE AND
    CMAKE_C_LINKER_SUPPORTS_PDB)
    install(FILES "$<TARGET_PDB_FILE:jpeg>"
      DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT bin OPTIONAL)
  endif()
  

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