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libpng/scripts/CMakeLists.txt

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CMake
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project(PNG C)
cmake_minimum_required(VERSION 2.4.3)
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# 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
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set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 2)
set(PNGLIB_RELEASE 41)
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set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
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set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
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# needed packages
find_package(ZLIB REQUIRED)
include_directories(${ZLIB_INCLUDE_DIR})
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if(NOT WIN32)
find_library(M_LIBRARY
NAMES m
PATHS /usr/lib /usr/local/lib
)
if(NOT M_LIBRARY)
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message(STATUS
"math library 'libm' not found - floating point support disabled")
endif()
else()
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# not needed on windows
set(M_LIBRARY "")
endif()
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# COMMAND LINE OPTIONS
if(DEFINED PNG_SHARED)
option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
else()
option(PNG_SHARED "Build shared lib" ON)
endif()
if(DEFINED PNG_STATIC)
option(PNG_STATIC "Build static lib" ${PNG_STATIC})
else()
option(PNG_STATIC "Build static lib" ON)
endif()
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if(MINGW)
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option(PNG_TESTS "Build pngtest" NO)
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else(MINGW)
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option(PNG_TESTS "Build pngtest" YES)
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endif(MINGW)
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option(PNG_NO_CONSOLE_IO "FIXME" YES)
option(PNG_NO_STDIO "FIXME" YES)
option(PNG_DEBUG "Build with debug output" NO)
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option(PNGARG "FIXME" YES)
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#TODO:
# PNG_CONSOLE_IO_SUPPORTED
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# maybe needs improving, but currently I don't know when we can enable what :)
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set(png_asm_tmp "OFF")
if(NOT WIN32)
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find_program(uname_executable NAMES uname PATHS /bin /usr/bin /usr/local/bin)
if(uname_executable)
EXEC_PROGRAM(${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.*$")
endif(uname_executable)
else()
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# this env var is normally only set on win64
SET(TEXT "ProgramFiles(x86)")
if("$ENV{${TEXT}}" STREQUAL "")
set(png_asm_tmp "ON")
endif("$ENV{${TEXT}}" STREQUAL "")
endif()
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# SET LIBNAME
set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
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# to distinguish between debug and release lib
set(CMAKE_DEBUG_POSTFIX "d")
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# OUR SOURCES
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set(libpng_sources
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png.h
pngconf.h
png.c
pngerror.c
pngget.c
pngmem.c
pngpread.c
pngread.c
pngrio.c
pngrtran.c
pngrutil.c
pngset.c
pngtrans.c
pngwio.c
pngwrite.c
pngwtran.c
pngwutil.c
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)
set(pngtest_sources
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pngtest.c
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)
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# SOME NEEDED DEFINITIONS
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if(MSVC)
add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
endif(MSVC)
if(PNG_SHARED OR NOT MSVC)
#if building msvc static this has NOT do be defined
add_definitions(-DZLIB_DLL)
endif()
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add_definitions(-DLIBPNG_NO_MMX)
add_definitions(-DPNG_NO_MMX_CODE)
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if(PNG_CONSOLE_IO_SUPPORTED)
add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
endif()
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if(PNG_NO_CONSOLE_IO)
add_definitions(-DPNG_NO_CONSOLE_IO)
endif()
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if(PNG_NO_STDIO)
add_definitions(-DPNG_NO_STDIO)
endif()
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if(PNG_DEBUG)
add_definitions(-DPNG_DEBUG)
endif()
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if(NOT M_LIBRARY AND NOT WIN32)
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add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED)
endif()
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# NOW BUILD OUR TARGET
include_directories(${PNG_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})
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if(PNG_SHARED)
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add_library(${PNG_LIB_NAME} SHARED ${libpng_sources})
if(MSVC)
# msvc does not append 'lib' - do it here to have consistent name
set_target_properties(${PNG_LIB_NAME} PROPERTIES PREFIX "lib")
endif()
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target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY})
endif()
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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 ${libpng_sources})
if(MSVC)
# msvc does not append 'lib' - do it here to have consistent name
set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES PREFIX "lib")
endif()
endif()
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if(PNG_SHARED AND WIN32)
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set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
endif()
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if(PNG_TESTS AND PNG_SHARED)
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# does not work with msvc due to png_lib_ver issue
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add_executable(pngtest ${pngtest_sources})
target_link_libraries(pngtest ${PNG_LIB_NAME})
# add_test(pngtest ${PNG_SOURCE_DIR}/pngtest.png)
endif()
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# CREATE PKGCONFIG FILES
# we use the same files like ./configure, so we have to set its vars
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set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix ${CMAKE_INSTALL_PREFIX})
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set(libdir ${CMAKE_INSTALL_PREFIX}/lib)
set(includedir ${CMAKE_INSTALL_PREFIX}/include)
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configure_file(${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
if(PNG_SHARED)
set_target_properties(${PNG_LIB_NAME} PROPERTIES
# VERSION 0.${PNGLIB_RELEASE}.1.2.41beta01
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VERSION 0.${PNGLIB_RELEASE}.0
SOVERSION 0
CLEAN_DIRECT_OUTPUT 1)
endif()
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if(PNG_STATIC)
if(NOT WIN32)
# that's uncool on win32 - it overwrites our static import lib...
set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
OUTPUT_NAME ${PNG_LIB_NAME}
CLEAN_DIRECT_OUTPUT 1)
endif()
endif()
# INSTALL
if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
if(PNG_SHARED)
install(TARGETS ${PNG_LIB_NAME}
RUNTIME DESTINATION bin
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib)
endif()
if(PNG_STATIC)
install(TARGETS ${PNG_LIB_NAME_STATIC}
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib)
endif()
endif()
if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
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install(FILES png.h pngconf.h DESTINATION include)
install(FILES png.h pngconf.h DESTINATION include/${PNGLIB_NAME})
endif()
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
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)
endif()
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# what's with libpng.txt and all the extra files?
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# UNINSTALL
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# do we need this?
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# DIST
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# 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
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