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bzip2/CMakeLists.txt
Rolf Eike Beer 91a3b6d614 CMake: remove needless checks
2019-06-27 08:52:45 +02:00

350 lines
11 KiB
CMake
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cmake_minimum_required(VERSION 3.12)
project(bzip2
VERSION 1.0.7
DESCRIPTION "This Bzip2/libbz2 a program and library for lossless block-sorting data compression."
LANGUAGES C)
# See versioning rule:
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
#
# KEEP THESE IN SYNC WITH meson.build OR STUFF WILL BREAK!
set(LT_CURRENT 1)
set(LT_REVISION 7)
set(LT_AGE 0)
set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
include(Version)
set(BZ_VERSION ${PROJECT_VERSION})
configure_file (
"${PROJECT_SOURCE_DIR}/bz_version.h.in"
"${PROJECT_BINARY_DIR}/bz_version.h"
)
include_directories("${PROJECT_BINARY_DIR}")
math(EXPR LT_SOVERSION "${LT_CURRENT} - ${LT_AGE}")
set(LT_VERSION "${LT_SOVERSION}.${LT_AGE}.${LT_REVISION}")
set(PACKAGE_VERSION "${PROJECT_VERSION}")
HexVersion(PACKAGE_VERSION_NUM ${PROJECT_VERSION_MAJOR} ${PROJECT_VERSION_MINOR} ${PROJECT_VERSION_PATCH})
set(ENABLE_APP_DEFAULT ON)
set(ENABLE_EXAMPLES_DEFAULT OFF)
set(ENABLE_DOCS_DEFAULT OFF)
include(CMakeOptions.txt)
if(ENABLE_LIB_ONLY AND (ENABLE_APP OR ENABLE_EXAMPLES))
# Remember when disabled options are disabled for later diagnostics.
set(ENABLE_LIB_ONLY_DISABLED_OTHERS 1)
else()
set(ENABLE_LIB_ONLY_DISABLED_OTHERS 0)
endif()
if(ENABLE_LIB_ONLY)
set(ENABLE_APP OFF)
set(ENABLE_EXAMPLES OFF)
endif()
# Do not disable assertions based on CMAKE_BUILD_TYPE.
foreach(_build_type "Release" "MinSizeRel" "RelWithDebInfo")
foreach(_lang C)
string(TOUPPER "CMAKE_${_lang}_FLAGS_${_build_type}" _var)
string(REGEX REPLACE "(^|)[/-]D *NDEBUG($|)" " " ${_var} "${${_var}}")
endforeach()
endforeach()
# Support the latest c++ standard available.
include(ExtractValidFlags)
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose the build type" FORCE)
# Include "None" as option to disable any additional (optimization) flags,
# relying on just CMAKE_C_FLAGS and CMAKE_CXX_FLAGS (which are empty by
# default). These strings are presented in cmake-gui.
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
"None" "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()
include(GNUInstallDirs)
# For test scripts and documentation
find_package(Python3)
# Always use '-fPIC'/'-fPIE' option.
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
# Checks for header files.
include(CheckIncludeFile)
check_include_file("arpa/inet.h" HAVE_ARPA_INET_H)
check_include_file("fcntl.h" HAVE_FCNTL_H)
check_include_file("inttypes.h" HAVE_INTTYPES_H)
check_include_file("limits.h" HAVE_LIMITS_H)
check_include_file("netdb.h" HAVE_NETDB_H)
check_include_file("netinet/in.h" HAVE_NETINET_IN_H)
check_include_file("pwd.h" HAVE_PWD_H)
check_include_file("sys/socket.h" HAVE_SYS_SOCKET_H)
check_include_file("sys/time.h" HAVE_SYS_TIME_H)
check_include_file("syslog.h" HAVE_SYSLOG_H)
check_include_file("time.h" HAVE_TIME_H)
check_include_file("unistd.h" HAVE_UNISTD_H)
include(CheckTypeSize)
# Checks for typedefs, structures, and compiler characteristics.
# AC_TYPE_SIZE_T
check_type_size("ssize_t" SIZEOF_SSIZE_T)
if(NOT SIZEOF_SSIZE_T)
# ssize_t is a signed type in POSIX storing at least -1.
# Set it to "int" to match the behavior of AC_TYPE_SSIZE_T (autotools).
set(ssize_t int)
endif()
include(CheckStructHasMember)
check_struct_has_member("struct tm" tm_gmtoff time.h HAVE_STRUCT_TM_TM_GMTOFF)
# Checks for library functions.
include(CheckFunctionExists)
check_function_exists(_Exit HAVE__EXIT)
check_function_exists(accept4 HAVE_ACCEPT4)
check_function_exists(mkostemp HAVE_MKOSTEMP)
include(CheckSymbolExists)
# XXX does this correctly detect initgroups (un)availability on cygwin?
check_symbol_exists(initgroups grp.h HAVE_DECL_INITGROUPS)
if(NOT HAVE_DECL_INITGROUPS AND HAVE_UNISTD_H)
# FreeBSD declares initgroups() in unistd.h
check_symbol_exists(initgroups unistd.h HAVE_DECL_INITGROUPS2)
if(HAVE_DECL_INITGROUPS2)
set(HAVE_DECL_INITGROUPS 1)
endif()
endif()
set(WARNCFLAGS)
if(CMAKE_C_COMPILER_ID MATCHES "MSVC")
if(ENABLE_WERROR)
set(WARNCFLAGS /WX)
endif()
else()
if(ENABLE_WERROR)
extract_valid_c_flags(WARNCFLAGS -Werror)
endif()
# For C compiler
extract_valid_c_flags(WARNCFLAGS
-Wall
-Wextra
-Wmissing-prototypes
-Wstrict-prototypes
-Wmissing-declarations
-Wpointer-arith
-Wdeclaration-after-statement
-Wformat-security
-Wwrite-strings
-Wshadow
-Winline
-Wnested-externs
-Wfloat-equal
-Wundef
-Wendif-labels
-Wempty-body
-Wcast-align
-Wclobbered
-Wvla
-Wpragmas
-Wunreachable-code
-Waddress
-Wattributes
-Wdiv-by-zero
# -Wshorten-64-to-32 # May be missing from GCC
-Wconversion
# -Wextended-offsetof # May be missing from GCC
-Wformat-nonliteral
# -Wlanguage-extension-token # May be missing from GCC
-Wmissing-field-initializers
-Wmissing-noreturn
# -Wmissing-variable-declarations # May be missing from GCC
# -Wpadded # Not used because we cannot change public structs
-Wsign-conversion
# -Wswitch-enum # Not used because this basically disallows default case
# -Wunreachable-code-break # May be missing from GCC
-Wunused-macros
-Wunused-parameter
-Wredundant-decls
# -Wheader-guard # Only work with Clang for the moment
-Wno-format-nonliteral # This is required because we pass format string as "const char*.
)
endif()
if(ENABLE_DEBUG)
set(DEBUGBUILD 1)
endif()
#add_definitions(-DHAVE_CONFIG_H)
#configure_file(cmakeconfig.h.in config.h)
# autotools-compatible names
# Sphinx expects relative paths in the .rst files. Use the fact that the files
# below are all one directory level deep.
file(RELATIVE_PATH top_srcdir "${CMAKE_CURRENT_BINARY_DIR}/dir" "${CMAKE_CURRENT_SOURCE_DIR}")
file(RELATIVE_PATH top_builddir "${CMAKE_CURRENT_BINARY_DIR}/dir" "${CMAKE_CURRENT_BINARY_DIR}")
set(abs_top_srcdir "${CMAKE_CURRENT_SOURCE_DIR}")
set(abs_top_builddir "${CMAKE_CURRENT_BINARY_DIR}")
# bzip2.pc (pkg-config file)
set(prefix "${CMAKE_INSTALL_PREFIX}")
set(exec_prefix "${CMAKE_INSTALL_PREFIX}")
set(bindir "${CMAKE_INSTALL_FULL_BINDIR}")
set(sbindir "${CMAKE_INSTALL_FULL_SBINDIR}")
set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
set(VERSION "${PACKAGE_VERSION}")
configure_file(
bzip2.pc.in
${CMAKE_CURRENT_BINARY_DIR}/bzip2.pc
@ONLY)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/bzip2.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
#
# The build targets.
# In a larger project, the following would be in subdirectories and
# These targets would be included with `add_subdirectory()`
#
set(BZ2_SOURCES
"blocksort.c"
"huffman.c"
"crctable.c"
"randtable.c"
"compress.c"
"decompress.c"
"bzlib.c")
# The bz2 OBJECT-library, required for bzip2, bzip2recover.
add_library(bz2_ObjLib OBJECT)
target_sources(bz2_ObjLib
PRIVATE ${BZ2_SOURCES}
PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/bzlib_private.h"
INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/bzlib.h")
# Windows resource file
set(BZ2_RES "")
if(WIN32)
configure_file(
version.rc.in
${CMAKE_CURRENT_BINARY_DIR}/version.rc
@ONLY)
set(BZ2_RES ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
endif()
if(ENABLE_SHARED_LIB)
# The libbz2 shared library.
add_library(bz2 SHARED ${BZ2_RES})
target_sources(bz2
PRIVATE ${BZ2_SOURCES}
"${CMAKE_CURRENT_SOURCE_DIR}/libbz2.def"
PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/bzlib_private.h"
INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/bzlib.h")
set_target_properties(bz2 PROPERTIES
COMPILE_FLAGS "${WARNCFLAGS}"
VERSION ${LT_VERSION} SOVERSION ${LT_SOVERSION})
install(TARGETS bz2 DESTINATION "${CMAKE_INSTALL_LIBDIR}")
install(FILES bzlib.h DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
endif()
if(ENABLE_STATIC_LIB)
# The libbz2 static library.
add_library(bz2_static STATIC)
target_sources(bz2_static
PRIVATE ${BZ2_SOURCES}
PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/bzlib_private.h"
INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/bzlib.h")
set_target_properties(bz2_static PROPERTIES
COMPILE_FLAGS "${WARNCFLAGS}"
VERSION ${LT_VERSION} SOVERSION ${LT_SOVERSION}
ARCHIVE_OUTPUT_NAME bz2)
target_compile_definitions(bz2_static PUBLIC "-DBZ2_STATICLIB")
install(TARGETS bz2_static DESTINATION "${CMAKE_INSTALL_LIBDIR}")
install(FILES bzlib.h DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
endif()
if(ENABLE_APP)
# The bzip2 executable.
add_executable(bzip2)
target_sources(bzip2
PRIVATE "bzip2.c")
target_link_libraries(bzip2
PRIVATE bz2_ObjLib)
install(TARGETS bzip2 DESTINATION "${CMAKE_INSTALL_BINDIR}")
# The bzip2 executable.
add_executable(bzip2recover)
target_sources(bzip2recover
PRIVATE "bzip2recover.c")
target_link_libraries(bzip2recover
PRIVATE bz2_ObjLib)
install(TARGETS bzip2recover DESTINATION "${CMAKE_INSTALL_BINDIR}")
if(ENABLE_EXAMPLES)
if(ENABLE_SHARED_LIB)
# The dlltest executable.
add_executable(dlltest)
target_sources(dlltest
PRIVATE "dlltest.c")
target_link_libraries(dlltest bz2)
install(TARGETS dlltest DESTINATION "${CMAKE_INSTALL_BINDIR}")
endif()
endif()
endif()
if(Python3_FOUND)
enable_testing()
add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND})
add_subdirectory(tests)
endif()
add_subdirectory(man)
set(DOCGEN_EXECS xsltproc perl xmllint egrep pdfxmltex pdftops)
if(ENABLE_DOCS)
foreach(EXEC IN LISTS DOCGEN_EXECS)
find_program(${EXEC}_EXEC ${EXEC})
if(NOT ${EXEC}_EXEC)
message(WARNING "Missing '${EXEC}', required to generate docs!")
set(MISSING_GENERATOR TRUE)
endif()
endforeach()
if(MISSING_GENERATOR)
message(FATAL_ERROR "Unable to generate docs.")
endif()
add_subdirectory(docs)
endif()
# The Summary Info.
string(TOUPPER "${CMAKE_BUILD_TYPE}" _build_type)
message(STATUS "Summary of build options:
Package version: ${VERSION}
Library version: ${LT_CURRENT}:${LT_REVISION}:${LT_AGE}
Install prefix: ${CMAKE_INSTALL_PREFIX}
Target system: ${CMAKE_SYSTEM_NAME}
Compiler:
Build type: ${CMAKE_BUILD_TYPE}
C compiler: ${CMAKE_C_COMPILER}
CFLAGS: ${CMAKE_C_FLAGS_${_build_type}} ${CMAKE_C_FLAGS}
WARNCFLAGS: ${WARNCFLAGS}
Test:
Python: ${Python3_FOUND} (${Python3_VERSION}, ${Python3_EXECUTABLE})
Docs:
Build docs: ${ENABLE_DOCS}
Features:
Applications: ${ENABLE_APP}
Examples: ${ENABLE_EXAMPLES}
")
if(ENABLE_LIB_ONLY_DISABLED_OTHERS)
message("Only the library will be built. To build other components "
"(such as applications and examples), set ENABLE_LIB_ONLY=OFF.")
endif()
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