X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=CMakeLists.txt;h=e0353a057e8c17b4bf66776fd6ab03e17b4c93a0;hb=refs%2Fheads%2Fsandbox%2Fpcoval%2Fprevious%2Fupstream;hp=00d9f7e43120077efb705c7a6a016342e82563f3;hpb=5ab0f6df7ecb95c9b816ece7a88a8df92b0cb2af;p=platform%2Fupstream%2Flibpng.git diff --git a/CMakeLists.txt b/CMakeLists.txt index 00d9f7e..e0353a0 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -1,28 +1,22 @@ -cmake_minimum_required(VERSION 2.4.3) -set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true) +# CMakeLists.txt -if(UNIX AND NOT DEFINED CMAKE_BUILD_TYPE) - set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING - "Choose the type of build, options are: - None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) - Debug - Release - RelWithDebInfo - MinSizeRel.") -endif() - -project(libpng C) -enable_testing() - -# Copyright (C) 2007-2010 Glenn Randers-Pehrson +# Copyright (C) 2007-2014 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 +cmake_minimum_required(VERSION 2.4.4) +set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true) + +set(CMAKE_CONFIGURATION_TYPES "Release;Debug;MinSizeRel;RelWithDebInfo") + +project(libpng C) +enable_testing() + set(PNGLIB_MAJOR 1) -set(PNGLIB_MINOR 2) -set(PNGLIB_RELEASE 50) +set(PNGLIB_MINOR 6) +set(PNGLIB_RELEASE 13) set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR}) set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE}) @@ -56,39 +50,11 @@ else() option(PNG_STATIC "Build static lib" ON) endif() -if(MINGW) - option(PNG_TESTS "Build pngtest" NO) -else() - option(PNG_TESTS "Build pngtest" YES) -endif() +option(PNG_TESTS "Build libpng tests" YES) -option(PNG_NO_CONSOLE_IO "FIXME" YES) -option(PNG_NO_STDIO "FIXME" YES) +# Many more configuration options could be added here option(PNG_DEBUG "Build with debug output" NO) -option(PNGARG "FIXME" YES) -#TODO: -# PNG_CONSOLE_IO_SUPPORTED - -# maybe needs improving, but currently I don't know when we can enable what :) -set(png_asm_tmp "OFF") -if(NOT WIN32) - find_program(uname_executable NAMES uname PATHS /bin /usr/bin /usr/local/bin) - if(uname_executable) - exec_program(${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.*$") - endif(uname_executable) -else() - # this env var is normally only set on win64 - set(TEXT "ProgramFiles(x86)") - if("$ENV{${TEXT}}" STREQUAL "") - set(png_asm_tmp "ON") - endif("$ENV{${TEXT}}" STREQUAL "") -endif() +option(PNGARG "Disable ANSI-C prototypes" NO) # SET LIBNAME set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR}) @@ -96,11 +62,26 @@ set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR}) # to distinguish between debug and release lib set(CMAKE_DEBUG_POSTFIX "d") +# Use the prebuilt pnglibconf.h file from the scripts folder +# TODO: fix this by building with awk; without this no cmake build can be +# configured directly (to do so indirectly use your local awk to build a +# pnglibconf.h in the build directory.) +configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt + ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h) +include_directories(${CMAKE_CURRENT_BINARY_DIR}) # OUR SOURCES -set(libpng_sources +set(libpng_public_hdrs png.h pngconf.h + ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h +) +set(libpng_sources + ${libpng_public_hdrs} + pngdebug.h + pnginfo.h + pngpriv.h + pngstruct.h png.c pngerror.c pngget.c @@ -120,55 +101,34 @@ set(libpng_sources set(pngtest_sources pngtest.c ) +set(pngvalid_sources + contrib/libtests/pngvalid.c +) +set(pngstest_sources + contrib/libtests/pngstest.c +) # SOME NEEDED DEFINITIONS -add_definitions(-DPNG_CONFIGURE_LIBPNG) - -if(_AIX) - add_definitions(-D_ALL_SOURCE) -endif(_AIX) - if(MSVC) - add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE) + add_definitions(-D_CRT_SECURE_NO_DEPRECATE) endif(MSVC) -if(PNG_SHARED OR NOT MSVC) - #if building msvc static this has NOT to be defined - add_definitions(-DZLIB_DLL) -endif() - -add_definitions(-DLIBPNG_NO_MMX) -add_definitions(-DPNG_NO_MMX_CODE) - - -if(PNG_CONSOLE_IO_SUPPORTED) - add_definitions(-DPNG_CONSOLE_IO_SUPPORTED) -endif() - -if(PNG_NO_CONSOLE_IO) - add_definitions(-DPNG_NO_CONSOLE_IO) -endif() - -if(PNG_NO_STDIO) - add_definitions(-DPNG_NO_STDIO) -endif() - if(PNG_DEBUG) add_definitions(-DPNG_DEBUG) endif() -if(NOT M_LIBRARY AND NOT WIN32) - add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED) -endif() - # NOW BUILD OUR TARGET include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${ZLIB_INCLUDE_DIR}) +unset(PNG_LIB_TARGETS) + if(PNG_SHARED) add_library(${PNG_LIB_NAME} SHARED ${libpng_sources}) + set(PNG_LIB_TARGETS ${PNG_LIB_NAME}) if(MSVC) # msvc does not append 'lib' - do it here to have consistent name set_target_properties(${PNG_LIB_NAME} PROPERTIES PREFIX "lib") + set_target_properties(${PNG_LIB_NAME} PROPERTIES IMPORT_PREFIX "lib") endif() target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY}) endif() @@ -177,12 +137,19 @@ 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}) + list(APPEND PNG_LIB_TARGETS ${PNG_LIB_NAME_STATIC}) if(MSVC) # msvc does not append 'lib' - do it here to have consistent name set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES PREFIX "lib") endif() + target_link_libraries(${PNG_LIB_NAME_STATIC} ${ZLIB_LIBRARY} ${M_LIBRARY}) endif() +if(NOT PNG_LIB_TARGETS) + message(SEND_ERROR + "No library variant selected to build. " + "Please enable at least one of the following options: PNG_STATIC, PNG_SHARED") +endif() if(PNG_SHARED AND WIN32) set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL) @@ -192,89 +159,203 @@ if(PNG_TESTS AND PNG_SHARED) # 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 pngtest ${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png) + add_test(pngtest ./pngtest ${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png) + # + add_executable(pngvalid ${pngvalid_sources}) + target_link_libraries(pngvalid ${PNG_LIB_NAME}) + add_test(pngvalid ./pngvalid) + add_executable(pngstest ${pngstest_sources}) + target_link_libraries(pngstest ${PNG_LIB_NAME}) + add_test(pngstest ./pngstest + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g01.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g02.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g04.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g16.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn2c08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn2c16.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn3p01.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn3p02.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn3p04.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn3p08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn4a08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn4a16.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn6a08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn6a16.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn0g01.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn0g02.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn0g04.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn2c16.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn3p08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbgn2c16.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbgn3p08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbrn2c08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbwn0g16.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbwn3p08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbyn3p08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftp0n0g08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftp0n2c08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftp0n3p08.png + ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftp1n3p08.png + ) endif() +# Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set +IF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY) + SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib") +ENDIF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY) + +# Set a variable with CMake code which: +# Creates a symlink from src to dest (if possible) or alternatively +# copies if different. +macro(CREATE_SYMLINK SRC_FILE DEST_FILE) + FILE(REMOVE ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE}) + if(WIN32 AND NOT CYGWIN AND NOT MSYS) + ADD_CUSTOM_COMMAND( + OUTPUT ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE} + COMMAND ${CMAKE_COMMAND} -E copy_if_different "${SRC_FILE}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} + COMMAND ${CMAKE_COMMAND} -E copy_if_different "${SRC_FILE}" ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE} + DEPENDS ${PNG_LIB_TARGETS} + ) + ADD_CUSTOM_TARGET(${DEST_FILE}_COPY ALL DEPENDS ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE}) + else(WIN32 AND NOT CYGWIN AND NOT MSYS) + get_filename_component(LINK_TARGET "${SRC_FILE}" NAME) + execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_LIBRARY_OUTPUT_DIRECTORY}) + execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}) + execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}) + endif(WIN32 AND NOT CYGWIN AND NOT MSYS) +endmacro() + +# libpng is a library so default to 'lib' +if(NOT DEFINED CMAKE_INSTALL_LIBDIR) + set(CMAKE_INSTALL_LIBDIR lib) +endif(NOT DEFINED CMAKE_INSTALL_LIBDIR) # 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 ${CMAKE_INSTALL_PREFIX}/include) - -configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/libpng.pc.in - ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc) -configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/libpng-config.in - ${CMAKE_CURRENT_BINARY_DIR}/libpng-config) -configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/libpng.pc.in - ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc) -configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/libpng-config.in - ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config) +# Only do this on Windows for Cygwin - the files don't make much sense outside +# a UNIX look alike +if(NOT WIN32 OR CYGWIN OR MINGW) + set(prefix ${CMAKE_INSTALL_PREFIX}) + set(exec_prefix ${CMAKE_INSTALL_PREFIX}) + set(libdir ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}) + set(includedir ${CMAKE_INSTALL_PREFIX}/include) + set(LIBS "-lz -lm") + configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in + ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY) + CREATE_SYMLINK(${PNGLIB_NAME}.pc libpng.pc) + + configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in + ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY) + CREATE_SYMLINK(${PNGLIB_NAME}-config libpng-config) +endif(NOT WIN32 OR CYGWIN OR MINGW) # SET UP LINKS if(PNG_SHARED) set_target_properties(${PNG_LIB_NAME} PROPERTIES -# VERSION 0.${PNGLIB_RELEASE}.1.2.50 - VERSION 0.${PNGLIB_RELEASE}.0 - SOVERSION 0 +# VERSION 16.${PNGLIB_RELEASE}.1.6.13 + VERSION 16.${PNGLIB_RELEASE}.0 + SOVERSION 16 CLEAN_DIRECT_OUTPUT 1) endif() if(PNG_STATIC) - if(NOT WIN32) - # that's uncool on win32 - it overwrites our static import lib... + # MSVC doesn't use a different file extension for shared vs. static + # libs. We are able to change OUTPUT_NAME to remove the _static + # for all other platforms. + if(NOT MSVC) set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES OUTPUT_NAME ${PNG_LIB_NAME} CLEAN_DIRECT_OUTPUT 1) endif() endif() +# If CMake > 2.4.x, we set a variable used below to export +# targets to an export file. +# TODO: Use VERSION_GREATER after our cmake_minimum_required >= 2.6.2 +if(CMAKE_MAJOR_VERSION GREATER 1 AND CMAKE_MINOR_VERSION GREATER 4) + set(PNG_EXPORT_RULE EXPORT libpng) +elseif(CMAKE_MAJOR_VERSION GREATER 2) # future proof + set(PNG_EXPORT_RULE EXPORT libpng) +endif() + # INSTALL if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL ) + install(TARGETS ${PNG_LIB_TARGETS} + ${PNG_EXPORT_RULE} + RUNTIME DESTINATION bin + LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} + ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}) + if(PNG_SHARED) - install(TARGETS ${PNG_LIB_NAME} - RUNTIME DESTINATION bin - LIBRARY DESTINATION lib - ARCHIVE DESTINATION lib) - endif() + # Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin + if(CYGWIN OR MINGW) + get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME} LOCATION_${CMAKE_BUILD_TYPE}) + CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}) + install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX} + DESTINATION ${CMAKE_INSTALL_LIBDIR}) + endif(CYGWIN OR MINGW) + + if(NOT WIN32) + get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME} LOCATION_${CMAKE_BUILD_TYPE}) + CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_SHARED_LIBRARY_SUFFIX}) + install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX} + DESTINATION ${CMAKE_INSTALL_LIBDIR}) + endif(NOT WIN32) + endif(PNG_SHARED) + if(PNG_STATIC) - install(TARGETS ${PNG_LIB_NAME_STATIC} - LIBRARY DESTINATION lib - ARCHIVE DESTINATION lib) - endif() + if(NOT WIN32 OR CYGWIN OR MINGW) + get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME_STATIC} LOCATION_${CMAKE_BUILD_TYPE}) + CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_STATIC_LIBRARY_SUFFIX}) + install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX} + DESTINATION ${CMAKE_INSTALL_LIBDIR}) + endif(NOT WIN32 OR CYGWIN OR MINGW) + endif() endif() if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL ) - install(FILES png.h pngconf.h DESTINATION include) - install(FILES png.h pngconf.h DESTINATION include/${PNGLIB_NAME}) + install(FILES ${libpng_public_hdrs} DESTINATION include) + install(FILES ${libpng_public_hdrs} DESTINATION include/${PNGLIB_NAME}) endif() if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL ) - install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin) - install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config - DESTINATION bin) + if(NOT WIN32 OR CYGWIN OR MINGW) + install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin) + install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config + DESTINATION bin) + endif(NOT WIN32 OR CYGWIN OR MINGW) endif() + if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL ) # Install man pages - install(FILES libpng.3 libpngpf.3 DESTINATION man/man3) - install(FILES png.5 DESTINATION man/man5) + if(NOT PNG_MAN_DIR) + set(PNG_MAN_DIR "share/man") + endif() + install(FILES libpng.3 libpngpf.3 DESTINATION ${PNG_MAN_DIR}/man3) + install(FILES png.5 DESTINATION ${PNG_MAN_DIR}/man5) # Install pkg-config files - install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc - DESTINATION lib/pkgconfig) - install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng-config - DESTINATION bin) - install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc - DESTINATION lib/pkgconfig) - install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config - DESTINATION bin) + if(NOT WIN32 OR CYGWIN OR MINGW) + install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc + DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig) + install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config + DESTINATION bin) + install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc + DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig) + install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config + DESTINATION bin) + endif(NOT WIN32 OR CYGWIN OR MINGW) endif() -# what's with libpng.txt and all the extra files? +# On versions of CMake that support it, create an export file CMake +# users can include() to import our targets +if(PNG_EXPORT_RULE AND NOT SKIP_INSTALL_EXPORT AND NOT SKIP_INSTALL_ALL ) + install(EXPORT libpng DESTINATION lib/libpng FILE lib${PNG_LIB_NAME}.cmake) +endif() +# what's with libpng-manual.txt and all the extra files? # UNINSTALL # do we need this? - # DIST # do we need this?