Add CMake script to build ogg.

Signed-off-by: Ralph Giles <giles@mozilla.com>

CMakeLists.txt

+cmake_minimum_required(VERSION 2.8.7)
+project(libogg)
+
+# Required modules
+include(GNUInstallDirs)
+include(CheckIncludeFiles)
+
+# Build options
+option(BUILD_SHARED_LIBS "Build shared library" OFF)
+if(APPLE)
+    option(BUILD_FRAMEWORK "Build Framework bundle for OSX" OFF)
+endif()
+
+# Extract project version from configure.ac
+file(READ configure.ac CONFIGURE_AC_CONTENTS)
+string(REGEX MATCH "AC_INIT\\(\\[libogg\\],\\[([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})
+
+# Extract so library version from configure.ac
+string(REGEX MATCH "LIB_AGE=([0-9]*)" DUMMY ${CONFIGURE_AC_CONTENTS})
+set(LIB_AGE ${CMAKE_MATCH_1})
+string(REGEX MATCH "LIB_REVISION=([0-9]*)" DUMMY ${CONFIGURE_AC_CONTENTS})
+set(LIB_REVISION ${CMAKE_MATCH_1})
+
+message(STATUS "Configuring ${PROJECT_NAME} ${PROJECT_VERSION}")
+message(STATUS "Shared library version 0.${LIB_AGE}.${LIB_REVISION}")
+
+# Configure config_type.h
+check_include_files(inttypes.h INCLUDE_INTTYPES_H)
+check_include_files(stdint.h INCLUDE_STDINT_H)
+check_include_files(sys/types.h INCLUDE_SYS_TYPES_H)
+
+set(SIZE16 int16_t)
+set(USIZE16 uint16_t)
+set(SIZE32 int32_t)
+set(USIZE32 uint32_t)
+set(SIZE64 int64_t)
+
+configure_file(include/ogg/config_types.h.in include/ogg/config_types.h @ONLY)
+
+set(OGG_HEADERS
+    include/ogg/ogg.h
+    include/ogg/os_types.h
+)
+
+set(OGG_SOURCES
+    src/bitwise.c
+    src/framing.c
+)
+
+if(MSVC)
+    list(APPEND OGG_SOURCES win32/ogg.def)
+endif()
+
+if(BUILD_FRAMEWORK)
+    set(BUILD_SHARED_LIBS TRUE)
+endif()
+
+include_directories(include)
+add_library(ogg ${OGG_HEADERS} ${OGG_SOURCES})
+set_target_properties(ogg PROPERTIES SOVERSION "0.${LIB_AGE}.${LIB_REVISION}")
+
+if(BUILD_FRAMEWORK)
+    set_target_properties(ogg PROPERTIES
+        FRAMEWORK TRUE
+        FRAMEWORK_VERSION ${PROJECT_VERSION}
+        MACOSX_FRAMEWORK_IDENTIFIER org.xiph.ogg
+        MACOSX_FRAMEWORK_SHORT_VERSION_STRING ${PROJECT_VERSION}
+        MACOSX_FRAMEWORK_BUNDLE_VERSION ${PROJECT_VERSION}
+        XCODE_ATTRIBUTE_INSTALL_PATH "@rpath"
+        PUBLIC_HEADER "${OGG_HEADERS}"
+        OUTPUT_NAME Ogg
+    )
+endif()
+
+# 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()
+
+configure_pkg_config_file(ogg.pc.in)
+
+install(FILES include/ogg/ogg.h include/ogg/os_types.h include/ogg/config_types.h DESTINATION ${CMAKE_INSTALL_FULL_INCLUDEDIR})
+install(TARGETS ogg RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} FRAMEWORK DESTINATION ${CMAKE_INSTALL_LIBDIR})
+install(FILES ogg.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
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