242 lines
9.1 KiB
CMake
242 lines
9.1 KiB
CMake
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#.rst
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# CMake configuration of libLBFGS project
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# ---------------------------------------
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#
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# This CMakeLists.txt defines some libLBFGS specific configuration variables
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# using a custom "subproject_define" command defined in the Subproject.cmake module.
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# The default values of these variables can be overridden either on the CMake
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# command-line using the -D option of the cmake command or in a super-project
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# which includes the libLBFGS source tree by setting the LBFGS_<varname>
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# CMake variables before adding the libLBFGS source directory via CMake's
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# add_subdirectory command. Only when the non-cached variable LBFGS_IS_SUBPROJECT
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# has a value equivalent to FALSE, these configuration variables are added to
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# the CMake cache so they can be edited in the CMake GUI. By default,
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# LBFGS_IS_SUBPROJECT is set to TRUE when the CMAKE_SOURCE_DIR is not identical
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# to the directory of this CMakeLists.txt file, i.e., the top-level directory of
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# the libLBFGS project source tree.
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#
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# Example CMakeLists.txt of user project which requires separate libLBFGS
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# installation (possibly requires FindLBFGS.cmake module for distribution
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# packages of libLBFGS that do not include a LBFGSConfig.cmake file)::
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#
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# cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
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#
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# project(Foo)
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#
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# find_package(LBFGS REQUIRED)
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#
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# add_executable(foo src/foo.cc)
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# target_link_libraries(foo LBFGS::lib)
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#
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# Example CMakeLists.txt of super-project which contains libLBFGS source tree::
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#
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# cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
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#
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# project(Foo)
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#
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# set(LBFGS_USE_SSE ON)
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# set(LBFGS_lib_TARGET_NAME liblbfgs)
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# add_subdirectory(lbfgs)
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# set_target_properties(liblbfgs PROPERTIES OUTPUT_NAME foolbfgs)
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#
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# add_executable(foo src/foo.cc)
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# target_link_libraries(foo liblbfgs)
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# # or use the usual namespaced ALIAS target:
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# #target_link_libraries(foo LBFGS::lib)
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#
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# Variables to configure the source files::
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#
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# LBFGS_USE_DOUBLE - Enable double precision floating point arithmetics. (default: ON)
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# LBFGS_USE_SSE - Enable SSE/SSE2 optimiations. (default: OFF)
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# LBFGS_USE_IEEE754 - Enable optimization routines for IEEE754 floating point values. (default: ON)
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#
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# Variables to configure the build::
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#
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# LBFGS_BUILD_SHARED_LIBS - Enable build of shared libraries. (default: OFF)
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# LBFGS_BUILD_EXAMPLES - Enable build of example programs. (default: OFF)
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# LBFGS_<target>_TARGET_NAME - Custom target name for target <target>, i.e., "lib" or "sample".
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# By default, the target name is prefixed by "lbfgs_" if this project
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# is configured as a subproject of another project.
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# LBFGS_NO_ALIASES - Do not add ALIAS targets LBFGS::lib and LBFGS::sample. (default: OFF)
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#
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# Variables to configure the installation::
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#
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# LBFGS_INSTALL_STATIC_LIBS - Whether to install static library files.
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# Shared libraries are always installed.
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# When a library is installed, its public header
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# files are installed as well. The default is
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# to not install static libraries when this
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# project is a subproject of another project.
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# LBFGS_INSTALL_HEADERS - Can be used to omit installation of public header files.
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# LBFGS_INSTALL_CONFIG - Whether to install CMake configuration files.
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# By default, the CMake configuration files are
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# installed when the library itself is installed.
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# LBFGS_INSTALL_RUNTIME_DIR - Installation directory for runtime files. (default: bin)
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# LBFGS_INSTALL_INCLUDE_DIR - Installation directory for public header files. (default: include)
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# LBFGS_INSTALL_LIBRARY_DIR - Installation directory for library files. (default: lib)
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# LBFGS_INSTALL_CONFIG_DIR - Installation directory for CMake configuration. (default: lib/cmake/liblbfgs)
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# ==============================================================================
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# libLBFGS: C library of limited-memory BFGS (L-BFGS)
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#
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# Copyright (c) 1990, Jorge Nocedal
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# Copyright (c) 2007-2010, Naoaki Okazaki
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#
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# libLBFGS is distributed under the term of the MIT license.
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# Please refer to COPYING file in the distribution.
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# ==============================================================================
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# ----------------------------------------------------------------------------
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# CMake version and policies
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cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
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if (POLICY CMP0042)
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cmake_policy(SET CMP0042 NEW)
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endif ()
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# ----------------------------------------------------------------------------
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# includes
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include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/Subproject.cmake")
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# ----------------------------------------------------------------------------
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# package info
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subproject(LBFGS VERSION 1.10.0 LANGUAGES C)
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set(PACKAGE_NAME "libLBFGS")
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set(PACKAGE_STRING "${PACKAGE_NAME} ${PROJECT_VERSION}")
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set(PACKAGE_TARNAME "liblbfgs-${PROJECT_VERSION}")
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set(PACKAGE_BUGREPORT "https://github.com/chokkan/liblbfgs/issues")
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# ----------------------------------------------------------------------------
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# options
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subproject_define(BOOL BUILD_SHARED_LIBS "Enable build of shared libraries" OFF)
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subproject_define(BOOL BUILD_EXAMPLES "Enable build of sample programs" OFF)
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subproject_define(BOOL USE_DOUBLE "Use double precision floating point arithmetics" ON)
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subproject_define(BOOL USE_SSE "Use SSE/SSE2 instructions for optimization" OFF)
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subproject_define(BOOL USE_IEEE754 "Activate optimization routines for IEEE754 floating point values" ON)
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subproject_set_property(USE_IEEE754 ADVANCED TRUE)
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# ----------------------------------------------------------------------------
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# checks for SSE/SSE2 instructions header files
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if (USE_SSE)
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include(CheckIncludeFile)
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if (USE_DOUBLE)
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check_include_file(emmintrin.h HAVE_EMMINTRIN_H)
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if (NOT HAVE_EMMINTRIN_H)
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message(WARNING "SSE2 instructions header file emmintrin.h not found. Disabled SSE optimizations.")
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subproject_set_property(USE_SSE VALUE OFF)
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endif ()
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else ()
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check_include_file(xmmintrin.h HAVE_XMMINTRIN_H)
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if (NOT HAVE_XMMINTRIN_H)
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message(WARNING "SSE instructions header file xmmintrin.h not found. Disabled SSE optimizations.")
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subproject_set_property(USE_SSE VALUE OFF)
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endif ()
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endif ()
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endif ()
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# ----------------------------------------------------------------------------
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# library
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set(HEADERS
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"include/lbfgs.h"
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)
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set(SOURCES
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"lib/lbfgs.c"
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"lib/arithmetic_ansi.h"
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"lib/arithmetic_sse_float.h"
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"lib/arithmetic_sse_double.h"
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)
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subproject_add_library(_lib "lib" ${HEADERS} ${SOURCES})
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set_target_properties(${_lib} PROPERTIES
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OUTPUT_NAME lbfgs
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VERSION ${PROJECT_VERSION}
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SOVERSION ${PROJECT_SOVERSION}
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DEBUG_POSTFIX d
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POSITION_INDEPENDENT_CODE TRUE
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)
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target_include_directories(${_lib}
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PUBLIC "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
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PRIVATE "${PROJECT_SOURCE_DIR}/lib"
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)
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if (NOT USE_DOUBLE)
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target_compile_definitions(${_lib} INTERFACE LBFGS_FLOAT=32)
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endif ()
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if (NOT USE_IEEE754)
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target_compile_definitions(${_lib} INTERFACE LBFGS_IEEE_FLOAT=0)
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endif ()
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if (USE_SSE)
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if (USE_DOUBLE)
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target_compile_definitions(${_lib} PRIVATE HAVE_EMMINTRIN_H=${HAVE_EMMINTRIN_H})
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if (MSVC)
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target_compile_definitions(${_lib} PRIVATE __SSE2__)
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endif ()
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else ()
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target_compile_definitions(${_lib} PRIVATE HAVE_XMMINTRIN_H=${HAVE_XMMINTRIN_H})
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if (MSVC)
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target_compile_definitions(${_lib} PRIVATE __SSE__)
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endif ()
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endif ()
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endif ()
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if (CMAKE_COMPILER_IS_GNUC)
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target_compile_options(${_lib} PRIVATE "$<$<CONFIG:Release>:-ffast-math>")
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if (USE_SSE)
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if (USE_DOUBLE)
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target_compile_options(${_lib} PRIVATE "-msse2")
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else ()
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target_compile_options(${_lib} PRIVATE "-msse")
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endif ()
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endif ()
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endif ()
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subproject_install_library(${_lib}
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RUNTIME_DESTINATION "bin"
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LIBRARY_DESTINATION "lib"
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INCLUDE_DESTINATION "include"
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PUBLIC_HEADER_FILES "${HEADERS}"
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)
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# ----------------------------------------------------------------------------
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# examples
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if (BUILD_EXAMPLES)
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subproject_add_executable(_sample "sample" sample/sample.c)
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target_link_libraries(${_sample} ${_lib})
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endif ()
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# ----------------------------------------------------------------------------
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# configuration
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include(CMakePackageConfigHelpers)
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subproject_get_install_config_dir(PROJECT_INSTALL_CONFIG_DIR)
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configure_package_config_file(
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"${PROJECT_SOURCE_DIR}/cmake/Config.cmake.in"
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"${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
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INSTALL_DESTINATION "${PROJECT_INSTALL_CONFIG_DIR}"
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NO_SET_AND_CHECK_MACRO
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NO_CHECK_REQUIRED_COMPONENTS_MACRO
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)
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write_basic_package_version_file(
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"${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
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VERSION ${PROJECT_VERSION}
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COMPATIBILITY AnyNewerVersion
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)
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subproject_install_config_files(
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FILES
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"${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
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"${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
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DESTINATION
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"${PROJECT_INSTALL_CONFIG_DIR}"
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)
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subproject_export(TARGETS ${_lib})
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subproject_install_exports(DESTINATION "${PROJECT_INSTALL_CONFIG_DIR}")
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