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# CMake build system for mruby
# License: released under the same license as mruby
# Author: jonforums@gmail.com
# Author: beoran@gmail.com
#
# Usage example:
# 1. Ensure CMake, Bison, and a build toolchain are on `PATH`
# 2. Change to a build directory outside source tree, eg - `build` subdir
# 3. Create build Makefiles or project files.
# `cmake ..` (UNIX-like system)
# `cmake -G "MSYS Makefiles" ..`
# `cmake -G "Visual Studio 10" ..`
# `cmake -G "NMake Makefiles" ..`
# ** to cross-compile: add -DCMAKE_TOOLCHAIN_FILE=/path/to/toolchain/file
# ** to set install dir: add -DCMAKE_INSTALL_PREFIX=/path/to/installdir
# 4a. Build: `make` (to make noisy, add `VERBOSE=1`)
# 4b. Build and test: `make all test`
# 4c. Build, test, and install: `make all test install`
# 4d. Build, test, and package: `make all test package`
cmake_minimum_required(VERSION 2.8.8 FATAL_ERROR)
# Default build mode is Release With Debug Info unless specified
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING
"Choose build type: empty Debug Release RelWithDebInfo MinSizeRel"
FORCE)
message(STATUS "Build type not set, defaulting to 'RelWithDebInfo'")
endif()
project(mruby C)
# TODO stop polluting source tree with CMakeFiles/ and CMakeCache.txt
# on build location check failure
# Make sure we are not trying to generate in in-tree build unless building
# with an MSVC or Xcode IDE where it's OK.
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT (MSVC_IDE OR XCODE))
message(FATAL_ERROR
"\nIn-source builds are not allowed as CMake would overwrite the "
"Makefiles distributed with mruby. Delete any created 'CMakeFiles' "
"subdirectory and 'CMakeCache.txt' file from the current directory, "
"change to the 'build' subdirectory, and re-run CMake from there.")
endif()
if(COMMAND cmake_policy)
cmake_policy(SET CMP0003 NEW) # don't split absolute link paths
cmake_policy(SET CMP0012 NEW) # recognize number & boolean literals
cmake_policy(SET CMP0015 NEW) # convert relative link paths to absolute
endif(COMMAND cmake_policy)
# Match original Makefile's default in-tree install.
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
set(CMAKE_INSTALL_PREFIX ${CMAKE_SOURCE_DIR} CACHE PATH
"Install path prefix prepended to install directories."
FORCE
)
endif()
# TODO refactor to use an option when adding shared lib support
set(BUILD_SHARED_LIBS OFF)
# Version of mruby, useful for versoning .so and .dll files.
# TODO automate by parsing src/version.h -or- extract git info?
set(MRUBY_VERSION 1.0.0dev)
string(REGEX MATCH "^[0-9]+[.][0-9]+" MRUBY_SOVERSION ${MRUBY_VERSION})
string(REPLACE "." "" MRUBY_DLL_SHORTVER ${MRUBY_SOVERSION})
# Search in the `cmake` directory for custom CMake helper modules.
list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/modules")
include(IntrospectSystem)
# Search for C header files in these directories.
include_directories("${CMAKE_SOURCE_DIR}/include" "${CMAKE_SOURCE_DIR}/src")
# TODO re-enable (and implement) if needed
# On some 64-bit platforms, libraries should be installed into `lib64'
# instead of `lib'. Set this to 64 to do that.
#set(LIB_SUFFIX "" CACHE STRING "Suffix for 'lib' directories, e.g. '64'")
# build the components
add_subdirectory(src)
add_subdirectory(mrblib)
add_subdirectory(tools)
add_subdirectory(test)
# install the header files
install(FILES include/mruby.h DESTINATION include)
install(FILES include/mrbconf.h DESTINATION include)
install(DIRECTORY include/mruby DESTINATION include FILES_MATCHING PATTERN "*.h")
# TODO refactor once proper versioning scheme implemented
# archive packaging
set(CPACK_GENERATOR "TGZ;ZIP")
string(TOLOWER ${CMAKE_SYSTEM_NAME} MRUBY_HOST)
if(CMAKE_C_COMPILER_VERSION)
string(REPLACE "." "" MRUBY_GCC_VERSION ${CMAKE_C_COMPILER_VERSION})
endif()
# TODO add build info suffix for non-Windows builds?
if(MINGW)
set(MRUBY_BUILD "-mingw${MRUBY_GCC_VERSION}")
elseif(MSVC)
set(MRUBY_BUILD "-msvc${MSVC_VERSION}")
endif()
set(CPACK_PACKAGE_FILE_NAME
"${CMAKE_PROJECT_NAME}-${MRUBY_VERSION}-${MRUBY_HOST}${MRUBY_BUILD}"
)
include(CPack)
# vim: ts=2 sts=2 sw=2 et
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