project(PNG) # Copyright (C) 2007 Glenn Randers-Pehrson # This code is released under the libpng license. # For conditions of distribution and use, see the disclaimer # and license in png.h set(PNGLIB_MAJOR 1) set(PNGLIB_MINOR 2) set(PNGLIB_RELEASE 39) set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR}) set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE}) # needed packages find_package(ZLIB REQUIRED) if(NOT WIN32) find_library(M_LIBRARY NAMES m PATHS /usr/lib /usr/local/lib ) if(NOT M_LIBRARY) message(STATUS "math library 'libm' not found - floating point support disabled") endif(NOT M_LIBRARY) else(NOT WIN32) # not needed on windows set(M_LIBRARY "") endif(NOT WIN32) # COMMAND LINE OPTIONS option(PNG_SHARED "Build shared lib" YES) option(PNG_STATIC "Build static lib" YES) if(MINGW) option(PNG_TESTS "Build pngtest" NO) else(MINGW) option(PNG_TESTS "Build pngtest" YES) endif(MINGW) option(PNG_NO_CONSOLE_IO "FIXME" YES) option(PNG_NO_STDIO "FIXME" YES) option(PNG_DEBUG "Build with debug output" YES) option(PNGARG "FIXME" YES) #TODO: # PNG_CONSOLE_IO_SUPPORTED # maybe needs improving, but currently I don't know when we can enable what :) set(png_asm_tmp "OFF") if(NOT WIN32) find_program(uname_executable NAMES uname PATHS /bin /usr/bin /usr/local/bin) if(uname_executable) EXEC_PROGRAM(${uname_executable} ARGS --machine OUTPUT_VARIABLE uname_output) if("uname_output" MATCHES "^.*i[1-9]86.*$") set(png_asm_tmp "ON") else("uname_output" MATCHES "^.*i[1-9]86.*$") set(png_asm_tmp "OFF") endif("uname_output" MATCHES "^.*i[1-9]86.*$") endif(uname_executable) else(NOT WIN32) # this env var is normally only set on win64 SET(TEXT "ProgramFiles(x86)") if("$ENV{${TEXT}}" STREQUAL "") set(png_asm_tmp "ON") endif("$ENV{${TEXT}}" STREQUAL "") endif(NOT WIN32) # SET LIBNAME # msvc does not append 'lib' - do it here to have consistent name if(MSVC) set(PNG_LIB_NAME lib) endif(MSVC) set(PNG_LIB_NAME ${PNG_LIB_NAME}png${PNGLIB_MAJOR}${PNGLIB_MINOR}) # to distinguish between debug and release lib set(CMAKE_DEBUG_POSTFIX "d") # OUR SOURCES set(libpng_sources png.h pngconf.h png.c pngerror.c pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c ) set(pngtest_sources pngtest.c ) # SOME NEEDED DEFINITIONS if(MSVC) add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE) endif(MSVC) add_definitions(-DZLIB_DLL) add_definitions(-DLIBPNG_NO_MMX) add_definitions(-DPNG_NO_MMX_CODE) if(PNG_CONSOLE_IO_SUPPORTED) add_definitions(-DPNG_CONSOLE_IO_SUPPORTED) endif(PNG_CONSOLE_IO_SUPPORTED) if(PNG_NO_CONSOLE_IO) add_definitions(-DPNG_NO_CONSOLE_IO) endif(PNG_NO_CONSOLE_IO) if(PNG_NO_STDIO) add_definitions(-DPNG_NO_STDIO) endif(PNG_NO_STDIO) if(PNG_DEBUG) add_definitions(-DPNG_DEBUG) endif(PNG_DEBUG) if(NOT M_LIBRARY AND NOT WIN32) add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED) endif(NOT M_LIBRARY AND NOT WIN32) # NOW BUILD OUR TARGET include_directories(${PNG_SOURCE_DIR} ${ZLIB_INCLUDE_DIR}) if(PNG_SHARED) add_library(${PNG_LIB_NAME} SHARED ${libpng_sources}) target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY}) endif(PNG_SHARED) if(PNG_STATIC) # does not work without changing name set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static) add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources}) endif(PNG_STATIC) if(PNG_SHARED AND WIN32) set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL) endif(PNG_SHARED AND WIN32) if(PNG_TESTS) # does not work with msvc due to png_lib_ver issue add_executable(pngtest ${pngtest_sources}) target_link_libraries(pngtest ${PNG_LIB_NAME}) # add_test(pngtest ${PNG_SOURCE_DIR}/pngtest.png) endif(PNG_TESTS) # CREATE PKGCONFIG FILES # we use the same files like ./configure, so we have to set its vars set(prefix ${CMAKE_INSTALL_PREFIX}) set(exec_prefix ${CMAKE_INSTALL_PREFIX}) set(libdir ${CMAKE_INSTALL_PREFIX}/lib) set(includedir ${CMAKE_INSTALL_PREFIX}/include) configure_file(${PNG_SOURCE_DIR}/scripts/libpng.pc.in ${PNG_BINARY_DIR}/libpng.pc) configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in ${PNG_BINARY_DIR}/libpng-config) configure_file(${PNG_SOURCE_DIR}/scripts/libpng.pc.in ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc) configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config) # SET UP LINKS set_target_properties(${PNG_LIB_NAME} PROPERTIES # VERSION 0.${PNGLIB_RELEASE}.1.2.39beta04 VERSION 0.${PNGLIB_RELEASE}.0 SOVERSION 0 CLEAN_DIRECT_OUTPUT 1) if(NOT WIN32) # that's uncool on win32 - it overwrites our static import lib... set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES OUTPUT_NAME ${PNG_LIB_NAME} CLEAN_DIRECT_OUTPUT 1) endif(NOT WIN32) # INSTALL install_targets(/lib ${PNG_LIB_NAME}) if(PNG_STATIC) install_targets(/lib ${PNG_LIB_NAME_STATIC}) endif(PNG_STATIC) install(FILES png.h pngconf.h DESTINATION include) install(FILES png.h pngconf.h DESTINATION include/${PNGLIB_NAME}) install(FILES libpng.3 libpngpf.3 DESTINATION man/man3) install(FILES png.5 DESTINATION man/man5) install(FILES ${PNG_BINARY_DIR}/libpng.pc DESTINATION lib/pkgconfig) install(FILES ${PNG_BINARY_DIR}/libpng-config DESTINATION bin) install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc DESTINATION lib/pkgconfig) install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin) # what's with libpng.txt and all the extra files? # UNINSTALL # do we need this? # DIST # do we need this? # to create msvc import lib for mingw compiled shared lib # pexports libpng.dll > libpng.def # lib /def:libpng.def /machine:x86