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cmake_minimum_required(VERSION 2.4.4)
set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
project(zlib C)
if(NOT DEFINED BUILD_SHARED_LIBS)
option(BUILD_SHARED_LIBS "Build a shared library form of zlib" ON)
endif()
include(CheckTypeSize)
include(CheckFunctionExists)
include(CheckIncludeFile)
include(CheckCSourceCompiles)
enable_testing()
check_include_file(sys/types.h HAVE_SYS_TYPES_H)
check_include_file(stdint.h HAVE_STDINT_H)
check_include_file(stddef.h HAVE_STDDEF_H)
#
# Check to see if we have large file support
#
set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE)
# We add these other definitions here because CheckTypeSize.cmake
# in CMake 2.4.x does not automatically do so and we want
# compatibility with CMake 2.4.x.
if(HAVE_SYS_TYPES_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
endif()
if(HAVE_STDINT_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
endif()
if(HAVE_STDDEF_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
endif()
check_type_size(off64_t OFF64_T)
if(HAVE_OFF64_T)
add_definitions(-D_LARGEFILE64_SOURCE)
endif()
set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
#
# Check for fseeko
#
check_function_exists(fseeko HAVE_FSEEKO)
if(NOT HAVE_FSEEKO)
add_definitions(-DNO_FSEEKO)
endif()
#
# Check for unistd.h
#
check_include_file(unistd.h HAVE_UNISTD_H)
#
# Check for errno.h
check_include_file(errno.h HAVE_ERRNO_H)
if(NOT HAVE_ERRNO_H)
add_definitions(-DNO_ERRNO_H)
endif()
#
# Check for mmap support
#
set(mmap_test_code "
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
caddr_t hello() {
return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);
}
int main() { return 0; }
")
check_c_source_compiles("${mmap_test_code}" USE_MMAP)
if(USE_MMAP)
add_definitions(-DUSE_MMAP)
endif()
#
# Create the zlibdefs.h file.
# Note: we create it in CMAKE_CURRENT_SOURCE_DIR instead
# of CMAKE_CURRENT_BINARY_DIR because an empty zlibdefs.h
# is shipped with zlib in the source tree.
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/zlibdefs.h.cmakein
${CMAKE_CURRENT_SOURCE_DIR}/zlibdefs.h)
if(MSVC)
set(CMAKE_DEBUG_POSTFIX "D")
add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
endif()
#============================================================================
# zlib
#============================================================================
set(ZLIB_PUBLIC_HDRS
zconf.h
zlib.h
zlibdefs.h
)
set(ZLIB_PRIVATE_HDRS
crc32.h
deflate.h
gzguts.h
inffast.h
inffixed.h
inflate.h
inftrees.h
trees.h
zutil.h
)
set(ZLIB_SRCS
adler32.c
compress.c
crc32.c
deflate.c
gzclose.c
gzio.c
gzlib.c
gzread.c
gzwrite.c
inflate.c
infback.c
inftrees.c
inffast.c
trees.c
uncompr.c
zutil.c
)
add_library(zlib ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
set_target_properties(zlib PROPERTIES VERSION 1.2.3.4)
set_target_properties(zlib PROPERTIES SOVERSION 1)
if(UNIX)
# On unix like platforms the library is almost always called libz
set_target_properties(zlib PROPERTIES OUTPUT_NAME z)
endif()
if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
install(TARGETS zlib
RUNTIME DESTINATION bin
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib )
endif()
if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION include)
endif()
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
install(FILES zlib.3 DESTINATION share/man/man3)
endif()
#============================================================================
# Example binaries
#============================================================================
add_executable(example example.c)
target_link_libraries(example zlib)
add_test(example example)
add_executable(minigzip minigzip.c)
target_link_libraries(minigzip zlib)
if(HAVE_OFF64_T)
add_executable(example64 example.c)
target_link_libraries(example64 zlib)
set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
add_test(example64 example64)
add_executable(minigzip64 minigzip.c)
target_link_libraries(minigzip64 zlib)
set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
endif()
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