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1# 3.1 is OK for most parts. However:
2# 3.3 is needed in src/libFLAC
3# 3.5 is needed in src/libFLAC/ia32
4# 3.9 is needed in 'doc' because of doxygen_add_docs()
5cmake_minimum_required(VERSION 3.5)
6
7if(NOT (CMAKE_BUILD_TYPE OR CMAKE_CONFIGURATION_TYPES OR DEFINED ENV{CFLAGS} OR DEFINED ENV{CXXFLAGS}))
8    set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: None Debug Release RelWithDebInfo")
9endif()
10
11project(FLAC VERSION 1.4.2) # HOMEPAGE_URL "https://www.xiph.org/flac/")
12
13list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
14
15option(BUILD_CXXLIBS "Build libFLAC++" ON)
16option(BUILD_PROGRAMS "Build and install programs" ON)
17option(BUILD_EXAMPLES "Build and install examples" ON)
18option(BUILD_TESTING "Build tests" ON)
19option(BUILD_DOCS "Build and install doxygen documents" ON)
20option(WITH_FORTIFY_SOURCE "Enable protection against buffer overflows" ON)
21option(WITH_STACK_PROTECTOR "Enable GNU GCC stack smash protection" ON)
22option(INSTALL_MANPAGES "Install MAN pages" ON)
23option(INSTALL_PKGCONFIG_MODULES "Install PkgConfig modules" ON)
24option(INSTALL_CMAKE_CONFIG_MODULE "Install CMake package-config module" ON)
25option(WITH_OGG "ogg support (default: test for libogg)" ON)
26option(BUILD_SHARED_LIBS "Build shared instead of static libraries" OFF)
27
28set(VERSION ${PROJECT_VERSION})
29
30if(NOT UNIX)
31    # This is to make sure testing works when building with a DLL
32    set (CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/objs)
33    set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/objs)
34endif()
35
36if(WITH_OGG)
37    if(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/ogg")
38        add_subdirectory("ogg")
39        set(OGG_FOUND 1 CACHE INTERNAL "ogg has been added as subdirectory")
40        set_target_properties(ogg PROPERTIES FOLDER Libraries)
41        if(BUILD_TESTING)
42            set_target_properties(test_bitwise test_framing PROPERTIES FOLDER Tests)
43        endif()
44    else()
45        if(NOT TARGET Ogg::ogg)
46            find_package(Ogg REQUIRED)
47        else()
48            set(OGG_FOUND 1 CACHE INTERNAL "ogg has already been built")
49        endif()
50        set(OGG_PACKAGE "ogg")
51    endif()
52endif()
53
54find_program (HAVE_GIT git)
55
56if(HAVE_GIT)
57    execute_process(
58        COMMAND git --git-dir=.git describe --tags --exact-match
59        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
60        OUTPUT_VARIABLE GIT_COMMIT_TAG
61        OUTPUT_STRIP_TRAILING_WHITESPACE
62        ERROR_QUIET
63        )
64    execute_process(
65        COMMAND git --git-dir=.git log -1 --pretty=format:%h
66        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
67        OUTPUT_VARIABLE GIT_COMMIT_HASH
68        OUTPUT_STRIP_TRAILING_WHITESPACE
69        ERROR_QUIET
70        )
71    execute_process(
72        COMMAND git --git-dir=.git log -1 --pretty=format:%cd --date=format:%Y%m%d
73        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
74        OUTPUT_VARIABLE GIT_COMMIT_DATE
75        OUTPUT_STRIP_TRAILING_WHITESPACE
76        ERROR_QUIET
77        )
78endif()
79
80if(NOT WIN32)
81    find_package(Iconv)
82    set(HAVE_ICONV ${Iconv_FOUND})
83endif()
84
85if(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang")
86    set(CMAKE_C_FLAGS "-Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes -Waggregate-return -Wcast-align -Wnested-externs -Wshadow -Wundef -Wmissing-declarations -Winline ${CMAKE_C_FLAGS}")
87    set(CMAKE_C_FLAGS_RELEASE "-DNDEBUG ${CMAKE_C_FLAGS_RELEASE}")
88endif()
89if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
90    set(CMAKE_CXX_FLAGS "-Wall -Wextra -Wcast-align -Wshadow -Wwrite-strings -Wctor-dtor-privacy -Wnon-virtual-dtor -Wreorder -Wsign-promo -Wundef ${CMAKE_CXX_FLAGS}")
91    set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG ${CMAKE_CXX_FLAGS_RELEASE}")
92endif()
93if(MSVC)
94    set(CMAKE_C_FLAGS_RELEASE "/O2 /Ob2 /Oi /Ot /Oy /DNDEBUG ${CMAKE_C_FLAGS_RELEASE}")
95endif()
96
97include(CMakePackageConfigHelpers)
98include(CheckCCompilerFlag)
99include(CheckCXXCompilerFlag)
100include(CheckSymbolExists)
101include(CheckFunctionExists)
102include(CheckIncludeFile)
103include(CheckCSourceCompiles)
104include(CheckCXXSourceCompiles)
105include(CheckLibraryExists)
106include(GNUInstallDirs)
107include(UseSystemExtensions)
108include(TestBigEndian)
109enable_testing()
110
111check_include_file("byteswap.h" HAVE_BYTESWAP_H)
112check_include_file("inttypes.h" HAVE_INTTYPES_H)
113check_include_file("stdint.h" HAVE_STDINT_H)
114check_include_file("stdbool.h" HAVE_STDBOOL_H)
115check_include_file("arm_neon.h" FLAC__HAS_NEONINTRIN)
116
117if(NOT HAVE_STDINT_H OR NOT HAVE_STDBOOL_H)
118    message(SEND_ERROR "Header stdint.h and/or stdbool.h not found")
119endif()
120
121if(MSVC)
122    check_include_file("intrin.h" FLAC__HAS_X86INTRIN)
123else()
124    check_include_file("x86intrin.h" FLAC__HAS_X86INTRIN)
125endif()
126
127check_function_exists(fseeko HAVE_FSEEKO)
128
129check_c_source_compiles("int main() { return __builtin_bswap16 (0) ; }" HAVE_BSWAP16)
130check_c_source_compiles("int main() { return __builtin_bswap32 (0) ; }" HAVE_BSWAP32)
131check_c_source_compiles("
132    #include <langinfo.h>
133    int main()
134    {
135        char* cs = nl_langinfo(CODESET);
136        return !cs;
137    }"
138    HAVE_LANGINFO_CODESET)
139
140test_big_endian(CPU_IS_BIG_ENDIAN)
141
142check_c_compiler_flag(-Werror HAVE_WERROR_FLAG)
143check_c_compiler_flag(-Wdeclaration-after-statement HAVE_DECL_AFTER_STMT_FLAG)
144check_c_compiler_flag(-mstackrealign HAVE_STACKREALIGN_FLAG)
145check_cxx_compiler_flag(-Weffc++ HAVE_WEFFCXX_FLAG)
146
147if(MINGW AND (WITH_FORTIFY_SOURCE OR WITH_STACK_PROTECTOR))
148  check_library_exists("ssp.a"  __stack_chk_fail "" HAVE_LIBSSP)
149  if(NOT HAVE_LIBSSP)
150    message(WARNING "Could not find libssp in MinGW, stack protection and/or FORTIFY_SOURCE are unavailable")
151  else()
152    link_libraries("ssp.a")
153  endif()
154elseif(NOT MSVC)
155  set(HAVE_LIBSSP 1)
156endif()
157
158if(WITH_STACK_PROTECTOR)
159  if(NOT MSVC)
160    check_c_compiler_flag("-fstack-protector-strong" HAVE_STACK_PROTECTOR_FLAG)
161  endif()
162endif()
163
164if(HAVE_WERROR_FLAG)
165    option(ENABLE_WERROR "Enable -Werror in all Makefiles" OFF)
166endif()
167
168add_compile_options(
169    $<$<BOOL:${MSVC}>:/wd4267>
170    $<$<BOOL:${MSVC}>:/wd4996>
171    $<$<BOOL:${ENABLE_WERROR}>:-Werror>
172    $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<BOOL:${HAVE_WEFFCXX_FLAG}>>:-Weffc++>
173    $<$<AND:$<COMPILE_LANGUAGE:C>,$<BOOL:${HAVE_DECL_AFTER_STMT_FLAG}>>:-Wdeclaration-after-statement>)
174
175if(WITH_FORTIFY_SOURCE AND HAVE_LIBSSP)
176  add_definitions(-D_FORTIFY_SOURCE=2)
177endif()
178
179if(HAVE_STACK_PROTECTOR_FLAG AND HAVE_LIBSSP)
180    add_compile_options($<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-fstack-protector-strong>)
181endif()
182
183if(CMAKE_SYSTEM_PROCESSOR STREQUAL "i686" AND HAVE_STACKREALIGN_FLAG)
184    add_compile_options($<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-mstackrealign>)
185endif()
186
187include_directories("include")
188
189include_directories("${CMAKE_CURRENT_BINARY_DIR}")
190add_definitions(-DHAVE_CONFIG_H)
191
192if(MSVC)
193    add_definitions(
194        -D_CRT_SECURE_NO_WARNINGS
195        -D_USE_MATH_DEFINES)
196endif()
197if(CMAKE_BUILD_TYPE STREQUAL Debug OR CMAKE_BUILD_TYPE STREQUAL RelWithDebInfo)
198    add_definitions(-DFLAC__OVERFLOW_DETECT)
199endif()
200
201add_subdirectory("src")
202add_subdirectory("microbench")
203if(BUILD_DOCS)
204    add_subdirectory("doc")
205endif()
206if(BUILD_EXAMPLES)
207    add_subdirectory("examples")
208endif()
209if(BUILD_TESTING)
210    add_subdirectory("test")
211endif()
212
213# The following folder layout is mostly for MSVC
214set_property(GLOBAL PROPERTY USE_FOLDERS ON)
215
216set_target_properties(FLAC grabbag getopt replaygain_analysis replaygain_synthesis utf8 PROPERTIES FOLDER Libraries)
217if(BUILD_CXXLIBS)
218    set_target_properties(FLAC++ PROPERTIES FOLDER Libraries)
219endif()
220if(BUILD_PROGRAMS)
221    set_target_properties(flacapp metaflac PROPERTIES FOLDER Programs)
222endif()
223if(BUILD_TESTING)
224    set_target_properties(test_libFLAC test_libs_common test_picture test_seeking test_streams test_cuesheet PROPERTIES FOLDER Tests)
225	if(BUILD_CXXLIBS)
226	    set_target_properties(test_libFLAC++ PROPERTIES FOLDER Tests)
227	endif()
228endif()
229if(BUILD_EXAMPLES)
230    set_target_properties(decode_file encode_file PROPERTIES FOLDER Examples)
231    if(BUILD_CXXLIBS)
232        set_target_properties(decode_file_cxx encode_file_cxx PROPERTIES FOLDER Examples)
233    endif()
234endif()
235if(BUILD_UTILS)
236    set_target_properties(flacdiff flactimer PROPERTIES FOLDER Utils)
237endif()
238
239configure_file(config.cmake.h.in config.h)
240
241if(INSTALL_CMAKE_CONFIG_MODULE)
242    install(
243        EXPORT targets
244        DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
245        NAMESPACE FLAC::)
246    export(EXPORT targets NAMESPACE FLAC:: FILE FLACTargets.cmake)
247
248    configure_package_config_file(
249        ${PROJECT_SOURCE_DIR}/flac-config.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/flac-config.cmake
250        INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
251    write_basic_package_version_file(
252        ${CMAKE_CURRENT_BINARY_DIR}/flac-config-version.cmake COMPATIBILITY AnyNewerVersion)
253
254    install(
255        FILES ${CMAKE_CURRENT_BINARY_DIR}/flac-config.cmake ${CMAKE_CURRENT_BINARY_DIR}/flac-config-version.cmake
256        DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
257    )
258
259    install(
260        FILES
261            "${CMAKE_CURRENT_BINARY_DIR}/flac-config.cmake"
262            "${CMAKE_CURRENT_BINARY_DIR}/flac-config-version.cmake"
263        DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
264endif()
265
266file(GLOB FLAC_HEADERS "include/FLAC/*.h")
267file(GLOB FLAC++_HEADERS "include/FLAC++/*.h")
268install(FILES ${FLAC_HEADERS} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/FLAC")
269install(FILES ${FLAC++_HEADERS} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/FLAC++")
270if(INSTALL_MANPAGES)
271    find_program (HAVE_PANDOC pandoc)
272    if(HAVE_PANDOC)
273        file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/man")
274        add_custom_command(
275            OUTPUT man/flac.1
276            COMMAND pandoc --standalone --to man "${CMAKE_SOURCE_DIR}/man/flac.md" > man/flac.1
277            )
278        add_custom_command(
279            OUTPUT man/metaflac.1
280            COMMAND pandoc --standalone --to man "${CMAKE_SOURCE_DIR}/man/metaflac.md" > man/metaflac.1
281            )
282               add_custom_target(man ALL DEPENDS man/flac.1 man/metaflac.1)
283        install(FILES "${CMAKE_BINARY_DIR}/man/flac.1" "${CMAKE_BINARY_DIR}/man/metaflac.1" DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
284    else()
285        if(EXISTS "${CMAKE_SOURCE_DIR}/man/flac.1" AND EXISTS "${CMAKE_SOURCE_DIR}/man/metaflac.1")
286            install(FILES "man/flac.1" "man/metaflac.1" DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
287        else()
288            message(SEND_ERROR "Pandoc nor prebuild manpages are found. Cannot install manpages. Set INSTALL_MANPAGES to OFF to build without man pages")
289        endif()
290    endif()
291endif()
292