1 2project(PNG) 3 4# Copyright (C) 2007 Glenn Randers-Pehrson 5 6# This code is released under the libpng license. 7# For conditions of distribution and use, see the disclaimer 8# and license in png.h 9 10set(PNGLIB_MAJOR 1) 11set(PNGLIB_MINOR 2) 12set(PNGLIB_RELEASE 38) 13set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR}) 14set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE}) 15 16# needed packages 17find_package(ZLIB REQUIRED) 18if(NOT WIN32) 19 find_library(M_LIBRARY 20 NAMES m 21 PATHS /usr/lib /usr/local/lib 22 ) 23 if(NOT M_LIBRARY) 24 message(STATUS 25 "math library 'libm' not found - floating point support disabled") 26 endif(NOT M_LIBRARY) 27else(NOT WIN32) 28 # not needed on windows 29 set(M_LIBRARY "") 30endif(NOT WIN32) 31 32 33# COMMAND LINE OPTIONS 34option(PNG_SHARED "Build shared lib" YES) 35option(PNG_STATIC "Build static lib" YES) 36if(MINGW) 37 option(PNG_TESTS "Build pngtest" NO) 38else(MINGW) 39 option(PNG_TESTS "Build pngtest" YES) 40endif(MINGW) 41option(PNG_NO_CONSOLE_IO "FIXME" YES) 42option(PNG_NO_STDIO "FIXME" YES) 43option(PNG_DEBUG "Build with debug output" YES) 44option(PNGARG "FIXME" YES) 45#TODO: 46# PNG_CONSOLE_IO_SUPPORTED 47 48# maybe needs improving, but currently I don't know when we can enable what :) 49set(png_asm_tmp "OFF") 50if(NOT WIN32) 51 find_program(uname_executable NAMES uname PATHS /bin /usr/bin /usr/local/bin) 52 if(uname_executable) 53 EXEC_PROGRAM(${uname_executable} ARGS --machine OUTPUT_VARIABLE uname_output) 54 if("uname_output" MATCHES "^.*i[1-9]86.*$") 55 set(png_asm_tmp "ON") 56 else("uname_output" MATCHES "^.*i[1-9]86.*$") 57 set(png_asm_tmp "OFF") 58 endif("uname_output" MATCHES "^.*i[1-9]86.*$") 59 endif(uname_executable) 60else(NOT WIN32) 61 # this env var is normally only set on win64 62 SET(TEXT "ProgramFiles(x86)") 63 if("$ENV{${TEXT}}" STREQUAL "") 64 set(png_asm_tmp "ON") 65 endif("$ENV{${TEXT}}" STREQUAL "") 66endif(NOT WIN32) 67 68# SET LIBNAME 69# msvc does not append 'lib' - do it here to have consistent name 70if(MSVC) 71 set(PNG_LIB_NAME lib) 72endif(MSVC) 73set(PNG_LIB_NAME ${PNG_LIB_NAME}png${PNGLIB_MAJOR}${PNGLIB_MINOR}) 74 75# to distinguish between debug and release lib 76set(CMAKE_DEBUG_POSTFIX "d") 77 78 79# OUR SOURCES 80set(libpng_sources 81 png.h 82 pngconf.h 83 png.c 84 pngerror.c 85 pngget.c 86 pngmem.c 87 pngpread.c 88 pngread.c 89 pngrio.c 90 pngrtran.c 91 pngrutil.c 92 pngset.c 93 pngtrans.c 94 pngwio.c 95 pngwrite.c 96 pngwtran.c 97 pngwutil.c 98) 99set(pngtest_sources 100 pngtest.c 101) 102# SOME NEEDED DEFINITIONS 103if(MSVC) 104 add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE) 105endif(MSVC) 106 107add_definitions(-DZLIB_DLL) 108 109add_definitions(-DLIBPNG_NO_MMX) 110add_definitions(-DPNG_NO_MMX_CODE) 111 112if(PNG_CONSOLE_IO_SUPPORTED) 113 add_definitions(-DPNG_CONSOLE_IO_SUPPORTED) 114endif(PNG_CONSOLE_IO_SUPPORTED) 115 116if(PNG_NO_CONSOLE_IO) 117 add_definitions(-DPNG_NO_CONSOLE_IO) 118endif(PNG_NO_CONSOLE_IO) 119 120if(PNG_NO_STDIO) 121 add_definitions(-DPNG_NO_STDIO) 122endif(PNG_NO_STDIO) 123 124if(PNG_DEBUG) 125 add_definitions(-DPNG_DEBUG) 126endif(PNG_DEBUG) 127 128if(NOT M_LIBRARY AND NOT WIN32) 129 add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED) 130endif(NOT M_LIBRARY AND NOT WIN32) 131 132# NOW BUILD OUR TARGET 133include_directories(${PNG_SOURCE_DIR} ${ZLIB_INCLUDE_DIR}) 134 135if(PNG_SHARED) 136 add_library(${PNG_LIB_NAME} SHARED ${libpng_sources}) 137 target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY}) 138endif(PNG_SHARED) 139if(PNG_STATIC) 140# does not work without changing name 141 set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static) 142 add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources}) 143endif(PNG_STATIC) 144 145if(PNG_SHARED AND WIN32) 146 set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL) 147endif(PNG_SHARED AND WIN32) 148 149if(PNG_TESTS) 150# does not work with msvc due to png_lib_ver issue 151 add_executable(pngtest ${pngtest_sources}) 152 target_link_libraries(pngtest ${PNG_LIB_NAME}) 153# add_test(pngtest ${PNG_SOURCE_DIR}/pngtest.png) 154endif(PNG_TESTS) 155 156 157# CREATE PKGCONFIG FILES 158# we use the same files like ./configure, so we have to set its vars 159set(prefix ${CMAKE_INSTALL_PREFIX}) 160set(exec_prefix ${CMAKE_INSTALL_PREFIX}) 161set(libdir ${CMAKE_INSTALL_PREFIX}/lib) 162set(includedir ${CMAKE_INSTALL_PREFIX}/include) 163 164configure_file(${PNG_SOURCE_DIR}/scripts/libpng.pc.in 165 ${PNG_BINARY_DIR}/libpng.pc) 166configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in 167 ${PNG_BINARY_DIR}/libpng-config) 168configure_file(${PNG_SOURCE_DIR}/scripts/libpng.pc.in 169 ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc) 170configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in 171 ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config) 172 173# SET UP LINKS 174set_target_properties(${PNG_LIB_NAME} PROPERTIES 175# VERSION 0.${PNGLIB_RELEASE}.1.2.38 176 VERSION 0.${PNGLIB_RELEASE}.0 177 SOVERSION 0 178 CLEAN_DIRECT_OUTPUT 1) 179if(NOT WIN32) 180 # that's uncool on win32 - it overwrites our static import lib... 181 set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES 182 OUTPUT_NAME ${PNG_LIB_NAME} 183 CLEAN_DIRECT_OUTPUT 1) 184endif(NOT WIN32) 185# INSTALL 186install_targets(/lib ${PNG_LIB_NAME}) 187if(PNG_STATIC) 188 install_targets(/lib ${PNG_LIB_NAME_STATIC}) 189endif(PNG_STATIC) 190install(FILES png.h pngconf.h DESTINATION include) 191install(FILES png.h pngconf.h DESTINATION include/${PNGLIB_NAME}) 192install(FILES libpng.3 libpngpf.3 DESTINATION man/man3) 193install(FILES png.5 DESTINATION man/man5) 194install(FILES ${PNG_BINARY_DIR}/libpng.pc DESTINATION lib/pkgconfig) 195install(FILES ${PNG_BINARY_DIR}/libpng-config DESTINATION bin) 196install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc DESTINATION lib/pkgconfig) 197install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin) 198 199# what's with libpng.txt and all the extra files? 200 201 202# UNINSTALL 203# do we need this? 204 205 206# DIST 207# do we need this? 208 209# to create msvc import lib for mingw compiled shared lib 210# pexports libpng.dll > libpng.def 211# lib /def:libpng.def /machine:x86 212 213
