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cmake_minimum_required(VERSION 2.8.12)
project(vorbis)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
# Required modules
include(CTest)
include(GNUInstallDirs)
include(CheckIncludeFiles)
include(CheckLibraryExists)
# Build options
option(BUILD_SHARED_LIBS "Build shared library" OFF)
if(APPLE)
option(BUILD_FRAMEWORK "Build Framework bundle for OSX" OFF)
endif()
if(BUILD_FRAMEWORK)
set(BUILD_SHARED_LIBS TRUE)
endif()
option(INSTALL_CMAKE_PACKAGE_MODULE "Install CMake package configuration module" ON)
# Extract project version from configure.ac
file(READ configure.ac CONFIGURE_AC_CONTENTS)
string(REGEX MATCH "AC_INIT\\(\\[libvorbis\\],\\[([0-9]*).([0-9]*).([0-9]*)" DUMMY ${CONFIGURE_AC_CONTENTS})
set(PROJECT_VERSION_MAJOR ${CMAKE_MATCH_1})
set(PROJECT_VERSION_MINOR ${CMAKE_MATCH_2})
set(PROJECT_VERSION_PATCH ${CMAKE_MATCH_3})
set(PROJECT_VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH})
# Helper function to get version-info
function(get_version_info result current_var_name age_var_name revision_var_name)
string(REGEX MATCH "${current_var_name}=([0-9]*)" DUMMY ${CONFIGURE_AC_CONTENTS})
set(VERSION_INFO_CURRENT ${CMAKE_MATCH_1})
string(REGEX MATCH "${age_var_name}=([0-9]*)" DUMMY ${CONFIGURE_AC_CONTENTS})
set(VERSION_INFO_AGE ${CMAKE_MATCH_1})
string(REGEX MATCH "${revision_var_name}=([0-9]*)" DUMMY ${CONFIGURE_AC_CONTENTS})
set(VERSION_INFO_REVISION ${CMAKE_MATCH_1})
math(EXPR VERSION_INFO_CURRENT_MINUS_AGE "${VERSION_INFO_CURRENT} - ${VERSION_INFO_AGE}")
set(${result} "${VERSION_INFO_CURRENT_MINUS_AGE}.${VERSION_INFO_AGE}.${VERSION_INFO_REVISION}" PARENT_SCOPE)
endfunction()
# Helper function to configure pkg-config files
function(configure_pkg_config_file pkg_config_file_in)
set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix ${CMAKE_INSTALL_FULL_BINDIR})
set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
set(VERSION ${PROJECT_VERSION})
string(REPLACE ".in" "" pkg_config_file ${pkg_config_file_in})
configure_file(${pkg_config_file_in} ${pkg_config_file} @ONLY)
endfunction()
message(STATUS "Configuring ${PROJECT_NAME} ${PROJECT_VERSION}")
# Find math library
check_library_exists(m floor "" HAVE_LIBM)
if(HAVE_LIBM)
set(VORBIS_LIBS "-lm")
endif()
# Find ogg dependency
if(NOT TARGET Ogg::ogg)
find_package(Ogg REQUIRED)
endif()
add_subdirectory(lib)
if(BUILD_TESTING)
add_subdirectory(test)
endif()
configure_pkg_config_file(vorbis.pc.in)
configure_pkg_config_file(vorbisenc.pc.in)
configure_pkg_config_file(vorbisfile.pc.in)
install(
FILES
${CMAKE_CURRENT_BINARY_DIR}/vorbis.pc
${CMAKE_CURRENT_BINARY_DIR}/vorbisenc.pc
${CMAKE_CURRENT_BINARY_DIR}/vorbisfile.pc
DESTINATION
${CMAKE_INSTALL_LIBDIR}/pkgconfig
)
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