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Merge pull request #586 from libtom/feature/cmake-support
Feature/cmake support
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‎.gitignore‎

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@@ -60,6 +60,10 @@ timing.exe
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.cproject
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.settings/
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# KDevelop special files
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*.kdev4
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# macOS special files
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.DS_Store
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@@ -102,3 +106,6 @@ coverage*.info
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cov-int/
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.coverity_*
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libtomcrypt.lzma
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# cmake build directories
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build*/

‎CMakeLists.txt‎

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# SPDX-License-Identifier: Unlicense
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#
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# LibTomCrypt, modular cryptographic library -- Tom St Denis
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#
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cmake_minimum_required(VERSION 3.10)
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project(libtomcrypt
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VERSION 1.18.2
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DESCRIPTION "A modular cryptographic library."
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HOMEPAGE_URL "https://www.libtom.net/LibTomCrypt"
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LANGUAGES C)
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# package release version
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# bump if re-releasing the same VERSION + patches
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# set to 1 if releasing a new VERSION
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set(PACKAGE_RELEASE_VERSION 1)
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#-----------------------------------------------------------------------------
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# Include CMake modules
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#-----------------------------------------------------------------------------
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include(GNUInstallDirs)
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include(CheckIPOSupported)
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include(CMakePackageConfigHelpers)
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# for potential builds against gnump
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include(FindPkgConfig)
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# default is "No tests"
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option(BUILD_TESTING "" OFF)
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include(CTest)
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include(sources.cmake)
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#-----------------------------------------------------------------------------
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# Options
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#-----------------------------------------------------------------------------
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option(WITH_LTM "Build with support for libtommath" TRUE)
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option(WITH_GMP "Build with support for GNU Multi Precision Arithmetic Library" FALSE)
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set(MPI_PROVIDER "LTM" CACHE STRING "Build tests and demos against 'LTM', 'TFM' or 'GMP', default is LTM")
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option(BUILD_SHARED_LIBS "Build shared library and only the shared library if \"ON\", default is static" OFF)
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#-----------------------------------------------------------------------------
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# Compose CFLAGS
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#-----------------------------------------------------------------------------
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# Some information ported from makefile_include.mk
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if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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message(STATUS "Setting build type to 'Release' as none was specified.")
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set(CMAKE_BUILD_TYPE "Release")
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endif()
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# We differentiate between MSVC, WATCOM and GCC-compatible compilers
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if(MSVC)
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set(LTC_C_FLAGS -W3)
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elseif(WATCOM)
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set(LTC_C_FLAGS -fo=.obj -oaxt -3r -w3)
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else()
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set(LTC_C_FLAGS -Wall -Wsign-compare -Wextra -Wshadow
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-Wdeclaration-after-statement -Wbad-function-cast -Wcast-align
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-Wstrict-prototypes -Wpointer-arith -Wsystem-headers)
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set(CMAKE_C_FLAGS_DEBUG "-g3")
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set(CMAKE_C_FLAGS_RELEASE "-O3 -funroll-loops -fomit-frame-pointer")
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set(CMAKE_C_FLAGS_RELWITHDEBINFO "-g3 -O2")
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set(CMAKE_C_FLAGS_MINSIZEREL "-Os")
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endif()
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# What compiler do we have and what are their...uhm... peculiarities
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if(CMAKE_C_COMPILER_ID MATCHES "(C|c?)lang")
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list(APPEND LTC_C_FLAGS -Wno-typedef-redefinition -Wno-tautological-compare -Wno-builtin-requires-header)
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# Clang requires at least '-O1' for dead code eliminiation
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set(CMAKE_C_FLAGS_DEBUG "-O1 ${CMAKE_C_FLAGS_DEBUG}")
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endif()
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if(CMAKE_C_COMPILER MATCHES "mingw")
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list(APPEND LTC_C_FLAGS -Wno-shadow -Wno-expansion-to-defined -Wno-declaration-after-statement -Wno-bad-function-cast)
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endif()
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if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
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list(APPEND LTC_C_FLAGS -Wno-nullability-completeness)
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endif()
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if(CMAKE_SYSTEM_NAME MATCHES "CYGWIN")
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list(APPEND LTC_C_FLAGS -no-undefined)
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endif()
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# If the user set the environment variables at generate-time, append them
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# in order to allow overriding our defaults.
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# ${LTC_CFLAGS} means the user passed it via sth like:
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# $ cmake -DLTC_CFLAGS="foo"
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list(APPEND LTC_C_FLAGS ${LTC_CFLAGS})
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list(APPEND LTC_LD_FLAGS ${LTC_LDFLAGS})
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#-----------------------------------------------------------------------------
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# Library targets
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#-----------------------------------------------------------------------------
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add_library(${PROJECT_NAME}
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${SOURCES}
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${PUBLIC_HEADERS}
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${PRIVATE_HEADERS}
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)
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target_include_directories(${PROJECT_NAME} PUBLIC
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src/headers>
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}>
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)
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target_compile_options(${PROJECT_NAME} BEFORE PRIVATE
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${LTM_C_FLAGS}
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)
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target_link_options(${PROJECT_NAME} BEFORE PRIVATE
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${LTM_LD_FLAGS}
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)
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set_target_properties(${PROJECT_NAME} PROPERTIES
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OUTPUT_NAME tomcrypt
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VERSION ${PROJECT_VERSION}
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SOVERSION ${PROJECT_VERSION_MAJOR}
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PUBLIC_HEADER "${PUBLIC_HEADERS}"
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)
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option(COMPILE_LTO "Build with LTO enabled")
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if(COMPILE_LTO)
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check_ipo_supported(RESULT COMPILER_SUPPORTS_LTO)
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if(COMPILER_SUPPORTS_LTO)
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set_property(TARGET ${PROJECT_NAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
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else()
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message(SEND_ERROR "This compiler does not support LTO. Reconfigure ${PROJECT_NAME} with -DCOMPILE_LTO=OFF.")
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endif()
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endif()
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#-----------------------------------------------------------------------------
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# MPI provider
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#-----------------------------------------------------------------------------
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# libtommath
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if(WITH_LTM)
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find_package(libtommath 1.2.0 REQUIRED)
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target_compile_definitions(${PROJECT_NAME} PUBLIC LTM_DESC)
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if(MPI_PROVIDER MATCHES "LTM")
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target_compile_definitions(${PROJECT_NAME} PUBLIC USE_LTM)
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endif()
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target_link_libraries(${PROJECT_NAME} PUBLIC libtommath)
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endif()
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# GNU MP
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if(WITH_GMP)
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pkg_check_modules(GMP REQUIRED gmp>=6.1.2)
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target_compile_definitions(${PROJECT_NAME} PUBLIC GMP_DESC)
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if(MPI_PROVIDER MATCHES "GMP")
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target_compile_definitions(${PROJECT_NAME} PUBLIC USE_GMP)
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endif()
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target_link_libraries(${PROJECT_NAME} PUBLIC ${GMP_LIBRARIES})
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endif()
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#-----------------------------------------------------------------------------
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# demos&test targets
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#-----------------------------------------------------------------------------
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add_subdirectory(demos)
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if(BUILD_TESTING)
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enable_testing()
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add_subdirectory(tests)
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endif()
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#---------------------------------------------------------------------------------------
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# Install/export targets and files
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#---------------------------------------------------------------------------------------
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set(CONFIG_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
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set(PROJECT_VERSION_FILE "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake")
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set(PROJECT_CONFIG_FILE "${PROJECT_NAME}-config.cmake")
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set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
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# install targets
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install(TARGETS ${PROJECT_NAME}
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EXPORT ${TARGETS_EXPORT_NAME}
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LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
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ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
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RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}
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PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}
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)
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# Install libtomcrypt.pc for pkg-config if we build a shared library
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if(BUILD_SHARED_LIBS)
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# Let the user override the default directory of the pkg-config file (usually this shouldn't be required to be changed)
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set(CMAKE_INSTALL_PKGCONFIGDIR "${CMAKE_INSTALL_LIBDIR}/pkgconfig" CACHE PATH "Folder where to install .pc files")
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configure_file(
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${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_NAME}.pc.in
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${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc
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@ONLY
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)
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install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc
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DESTINATION ${CMAKE_INSTALL_PKGCONFIGDIR}
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)
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endif()
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# generate package version file
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write_basic_package_version_file(
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${PROJECT_VERSION_FILE}
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VERSION ${PROJECT_VERSION}
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COMPATIBILITY SameMajorVersion
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)
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# install version file
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install(FILES ${PROJECT_VERSION_FILE}
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DESTINATION ${CONFIG_INSTALL_DIR}
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)
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# build directory package config
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export(EXPORT ${TARGETS_EXPORT_NAME}
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FILE ${PROJECT_CONFIG_FILE}
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)
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# installed package config
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install(EXPORT ${TARGETS_EXPORT_NAME}
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DESTINATION ${CONFIG_INSTALL_DIR}
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FILE ${PROJECT_CONFIG_FILE}
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)
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# add to CMake registry
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export(PACKAGE ${PROJECT_NAME})
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#---------------------------------------------------------------------------------------
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# Create release packages
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#---------------------------------------------------------------------------------------
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# determine distribution and architecture
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find_program(LSB_RELEASE lsb_release)
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find_program(SYSCTL sysctl)
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find_program(UNAME uname)
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if(UNAME)
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execute_process(COMMAND uname -m OUTPUT_VARIABLE MACHINE_ARCH OUTPUT_STRIP_TRAILING_WHITESPACE)
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elseif(SYSCTL)
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execute_process(COMMAND sysctl -b hw.machine_arch OUTPUT_VARIABLE MACHINE_ARCH OUTPUT_STRIP_TRAILING_WHITESPACE)
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else()
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string(TOLOWER ${CMAKE_SYSTEM_NAME} MACHINE_ARCH)
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endif()
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if(LSB_RELEASE)
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execute_process(COMMAND lsb_release -si OUTPUT_VARIABLE LINUX_DISTRO OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND lsb_release -sc OUTPUT_VARIABLE LINUX_DISTRO_CODENAME OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND lsb_release -sr OUTPUT_VARIABLE LINUX_DISTRO_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
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string(TOLOWER ${LINUX_DISTRO} LINUX_DISTRO)
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if(LINUX_DISTRO_CODENAME STREQUAL "n/a")
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set(DISTRO_PACK_PATH ${LINUX_DISTRO}/${LINUX_DISTRO_VERSION}/)
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else()
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set(DISTRO_PACK_PATH ${LINUX_DISTRO}/${LINUX_DISTRO_CODENAME}/)
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endif()
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else()
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set(DISTRO_PACK_PATH ${CMAKE_SYSTEM_NAME}/)
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endif()
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# default CPack generators
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set(CPACK_GENERATOR TGZ STGZ)
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# extra CPack generators
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if(LINUX_DISTRO STREQUAL "debian" OR LINUX_DISTRO STREQUAL "ubuntu" OR LINUX_DISTRO STREQUAL "linuxmint")
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list(APPEND CPACK_GENERATOR DEB)
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elseif(LINUX_DISTRO STREQUAL "fedora" OR LINUX_DISTRO STREQUAL "opensuse" OR LINUX_DISTRO STREQUAL "centos")
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list(APPEND CPACK_GENERATOR RPM)
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elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
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list(APPEND CPACK_GENERATOR FREEBSD)
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endif()
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# general CPack config
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set(CPACK_PACKAGE_DIRECTORY ${CMAKE_BINARY_DIR}/packages/${DISTRO_PACK_PATH})
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message(STATUS "CPack: packages will be generated under ${CPACK_PACKAGE_DIRECTORY}")
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if(BUILD_SHARED_LIBS)
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set(CPACK_PACKAGE_NAME "${PROJECT_NAME}${PROJECT_VERSION_MAJOR}")
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else()
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set(CPACK_PACKAGE_NAME "${PROJECT_NAME}-devel")
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endif()
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set(CPACK_PACKAGE_VERSION ${PROJECT_VERSION})
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set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "LibTomCrypt")
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set(CPACK_PACKAGE_VENDOR "libtom projects")
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set(CPACK_PACKAGE_CONTACT "libtom@googlegroups.com")
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set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
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set(PACKAGE_NAME_TRAILER ${CPACK_PACKAGE_VERSION}-${PACKAGE_RELEASE_VERSION}_${MACHINE_ARCH})
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set(CPACK_PACKAGE_FILE_NAME ${CPACK_PACKAGE_NAME}-${PACKAGE_NAME_TRAILER})
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set(CPACK_STRIP_FILES ON)
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# deb specific CPack config
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set(CPACK_DEBIAN_FILE_NAME DEB-DEFAULT)
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set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
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set(CPACK_DEBIAN_PACKAGE_RELEASE ${PACKAGE_RELEASE_VERSION})
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if(BUILD_SHARED_LIBS)
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set(CPACK_DEBIAN_PACKAGE_SECTION "libs")
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else()
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set(CPACK_DEBIAN_PACKAGE_NAME "${PROJECT_NAME}-dev")
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set(CPACK_DEBIAN_PACKAGE_SECTION "devel")
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endif()
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# rpm specific CPack config
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set(CPACK_RPM_PACKAGE_RELEASE ${PACKAGE_RELEASE_VERSION})
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set(CPACK_RPM_PACKAGE_ARCHITECTURE ${MACHINE_ARCH})
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set(CPACK_RPM_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-${PROJECT_VERSION}")
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set(CPACK_RPM_PACKAGE_LICENSE "The Unlicense")
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# FreeBSD specific CPack config
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set(CPACK_FREEBSD_PACKAGE_MAINTAINER "gahr@FreeBSD.org")
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set(CPACK_FREEBSD_PACKAGE_ORIGIN "security/libtomcrypt")
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set(CPACK_FREEBSD_PACKAGE_CATEGORIES "security")
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include(CPack)

‎README.md‎

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Have a look at the developer documentation, [[GNU]] or [[FreeBSD]] to get a detailed explanation of all the variables.
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## CMake support
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The project provides support for the CMake build system.
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```
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git clone https://github.com/libtom/libtomcrypt.git
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mkdir -p libtomcrypt/build
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cd libtomcrypt/build
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cmake ..
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make -j$(nproc)
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```
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More details around building with CMake can be found in the developer documentation.
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[GNU]: https://www.gnu.org/prep/standards/html_node/DESTDIR.html
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[FreeBSD]: https://www.freebsd.org/doc/en/books/porters-handbook/porting-prefix.html

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