292 lines
12 KiB
CMake
292 lines
12 KiB
CMake
#
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# CMake build system design considerations:
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#
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# - Include directories:
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# + Do not define include directories globally using the include_directories
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# command but rather at the target level using the
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# target_include_directories command. That way, it is easier to guarantee
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# that targets are built using the proper list of include directories.
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# + Use the PUBLIC and PRIVATE keywords to specifiy the scope of include
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# directories. That way, a target linking to a library (using the
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# target_link_librairies command) inherits from the library PUBLIC include
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# directories and not from the PRIVATE ones.
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# + Note: there is currently one remaining include_directories command in the
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# CMake files. It is related to ZLIB support which is planned to be removed.
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# When the support is removed, the associated include_directories command
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# will be removed as well as this note.
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#
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cmake_minimum_required(VERSION 2.6)
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if(TEST_CPP)
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project("mbed TLS" C CXX)
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else()
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project("mbed TLS" C)
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endif()
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# Set the project root directory.
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set(MBEDTLS_DIR ${CMAKE_CURRENT_SOURCE_DIR})
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option(USE_PKCS11_HELPER_LIBRARY "Build mbed TLS with the pkcs11-helper library." OFF)
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option(ENABLE_ZLIB_SUPPORT "Build mbed TLS with zlib library." OFF)
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option(ENABLE_PROGRAMS "Build mbed TLS programs." ON)
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option(UNSAFE_BUILD "Allow unsafe builds. These builds ARE NOT SECURE." OFF)
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option(MBEDTLS_FATAL_WARNINGS "Compiler warnings treated as errors" ON)
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string(REGEX MATCH "Clang" CMAKE_COMPILER_IS_CLANG "${CMAKE_C_COMPILER_ID}")
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string(REGEX MATCH "GNU" CMAKE_COMPILER_IS_GNU "${CMAKE_C_COMPILER_ID}")
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string(REGEX MATCH "IAR" CMAKE_COMPILER_IS_IAR "${CMAKE_C_COMPILER_ID}")
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string(REGEX MATCH "MSVC" CMAKE_COMPILER_IS_MSVC "${CMAKE_C_COMPILER_ID}")
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# the test suites currently have compile errors with MSVC
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if(CMAKE_COMPILER_IS_MSVC)
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option(ENABLE_TESTING "Build mbed TLS tests." OFF)
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else()
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option(ENABLE_TESTING "Build mbed TLS tests." ON)
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endif()
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# Warning string - created as a list for compatibility with CMake 2.8
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set(WARNING_BORDER "*******************************************************\n")
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set(NULL_ENTROPY_WARN_L1 "**** WARNING! MBEDTLS_TEST_NULL_ENTROPY defined!\n")
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set(NULL_ENTROPY_WARN_L2 "**** THIS BUILD HAS NO DEFINED ENTROPY SOURCES\n")
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set(NULL_ENTROPY_WARN_L3 "**** AND IS *NOT* SUITABLE FOR PRODUCTION USE\n")
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set(NULL_ENTROPY_WARNING "${WARNING_BORDER}"
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"${NULL_ENTROPY_WARN_L1}"
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"${NULL_ENTROPY_WARN_L2}"
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"${NULL_ENTROPY_WARN_L3}"
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"${WARNING_BORDER}")
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set(CTR_DRBG_128_BIT_KEY_WARN_L1 "**** WARNING! MBEDTLS_CTR_DRBG_USE_128_BIT_KEY defined!\n")
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set(CTR_DRBG_128_BIT_KEY_WARN_L2 "**** Using 128-bit keys for CTR_DRBG limits the security of generated\n")
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set(CTR_DRBG_128_BIT_KEY_WARN_L3 "**** keys and operations that use random values generated to 128-bit security\n")
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set(CTR_DRBG_128_BIT_KEY_WARNING "${WARNING_BORDER}"
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"${CTR_DRBG_128_BIT_KEY_WARN_L1}"
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"${CTR_DRBG_128_BIT_KEY_WARN_L2}"
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"${CTR_DRBG_128_BIT_KEY_WARN_L3}"
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"${WARNING_BORDER}")
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# Python 3 is only needed here to check for configuration warnings.
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if(NOT CMAKE_VERSION VERSION_LESS 3.15.0)
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set(Python3_FIND_STRATEGY LOCATION)
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find_package(Python3 COMPONENTS Interpreter)
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if(Python3_Interpreter_FOUND)
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set(MBEDTLS_PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
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endif()
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else()
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find_package(PythonInterp 3)
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if(PYTHONINTERP_FOUND)
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set(MBEDTLS_PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE})
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endif()
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endif()
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if(MBEDTLS_PYTHON_EXECUTABLE)
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# If 128-bit keys are configured for CTR_DRBG, display an appropriate warning
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execute_process(COMMAND ${MBEDTLS_PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/config.py -f ${CMAKE_CURRENT_SOURCE_DIR}/include/mbedtls/config.h get MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
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RESULT_VARIABLE result)
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if(${result} EQUAL 0)
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message(WARNING ${CTR_DRBG_128_BIT_KEY_WARNING})
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endif()
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# If NULL Entropy is configured, display an appropriate warning
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execute_process(COMMAND ${MBEDTLS_PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/config.py -f ${CMAKE_CURRENT_SOURCE_DIR}/include/mbedtls/config.h get MBEDTLS_TEST_NULL_ENTROPY
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RESULT_VARIABLE result)
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if(${result} EQUAL 0)
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message(WARNING ${NULL_ENTROPY_WARNING})
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if(NOT UNSAFE_BUILD)
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message(FATAL_ERROR "\
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\n\
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Warning! You have enabled MBEDTLS_TEST_NULL_ENTROPY. \
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This option is not safe for production use and negates all security \
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It is intended for development use only. \
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\n\
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To confirm you want to build with this option, re-run cmake with the \
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option: \n\
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cmake -DUNSAFE_BUILD=ON ")
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return()
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endif()
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endif()
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endif()
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set(CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE}
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CACHE STRING "Choose the type of build: None Debug Release Coverage ASan ASanDbg MemSan MemSanDbg Check CheckFull"
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FORCE)
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# Create a symbolic link from ${base_name} in the binary directory
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# to the corresponding path in the source directory.
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function(link_to_source base_name)
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# Get OS dependent path to use in `execute_process`
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if (CMAKE_HOST_WIN32)
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#mklink is an internal command of cmd.exe it can only work with \
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string(REPLACE "/" "\\" link "${CMAKE_CURRENT_BINARY_DIR}/${base_name}")
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string(REPLACE "/" "\\" target "${CMAKE_CURRENT_SOURCE_DIR}/${base_name}")
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else()
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set(link "${CMAKE_CURRENT_BINARY_DIR}/${base_name}")
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set(target "${CMAKE_CURRENT_SOURCE_DIR}/${base_name}")
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endif()
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if (NOT EXISTS ${link})
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if (CMAKE_HOST_UNIX)
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set(command ln -s ${target} ${link})
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else()
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if (IS_DIRECTORY ${target})
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set(command cmd.exe /c mklink /j ${link} ${target})
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else()
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set(command cmd.exe /c mklink /h ${link} ${target})
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endif()
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endif()
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execute_process(COMMAND ${command}
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RESULT_VARIABLE result
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ERROR_VARIABLE output)
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if (NOT ${result} EQUAL 0)
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message(FATAL_ERROR "Could not create symbolic link for: ${target} --> ${output}")
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endif()
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endif()
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endfunction(link_to_source)
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string(REGEX MATCH "Clang" CMAKE_COMPILER_IS_CLANG "${CMAKE_C_COMPILER_ID}")
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if(CMAKE_COMPILER_IS_GNU)
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# some warnings we want are not available with old GCC versions
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# note: starting with CMake 2.8 we could use CMAKE_C_COMPILER_VERSION
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execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion
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OUTPUT_VARIABLE GCC_VERSION)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wwrite-strings")
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if (GCC_VERSION VERSION_GREATER 4.3 OR GCC_VERSION VERSION_EQUAL 4.3)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wvla")
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endif()
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if (GCC_VERSION VERSION_GREATER 4.5 OR GCC_VERSION VERSION_EQUAL 4.5)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wlogical-op")
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endif()
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if (GCC_VERSION VERSION_GREATER 4.8 OR GCC_VERSION VERSION_EQUAL 4.8)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wshadow -Wformat-signedness")
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endif()
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set(CMAKE_C_FLAGS_RELEASE "-O2")
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set(CMAKE_C_FLAGS_DEBUG "-O0 -g3")
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set(CMAKE_C_FLAGS_COVERAGE "-O0 -g3 --coverage")
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set(CMAKE_C_FLAGS_ASAN "-fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover=all -O3")
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set(CMAKE_C_FLAGS_ASANDBG "-fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover=all -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls")
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set(CMAKE_C_FLAGS_CHECK "-Os")
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set(CMAKE_C_FLAGS_CHECKFULL "${CMAKE_C_FLAGS_CHECK} -Wcast-qual")
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endif(CMAKE_COMPILER_IS_GNU)
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if(CMAKE_COMPILER_IS_CLANG)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wwrite-strings -Wpointer-arith -Wimplicit-fallthrough -Wshadow -Wvla")
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set(CMAKE_C_FLAGS_RELEASE "-O2")
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set(CMAKE_C_FLAGS_DEBUG "-O0 -g3")
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set(CMAKE_C_FLAGS_COVERAGE "-O0 -g3 --coverage")
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set(CMAKE_C_FLAGS_ASAN "-fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover=all -O3")
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set(CMAKE_C_FLAGS_ASANDBG "-fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover=all -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls")
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set(CMAKE_C_FLAGS_MEMSAN "-fsanitize=memory -O3")
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set(CMAKE_C_FLAGS_MEMSANDBG "-fsanitize=memory -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -fsanitize-memory-track-origins=2")
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set(CMAKE_C_FLAGS_CHECK "-Os")
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endif(CMAKE_COMPILER_IS_CLANG)
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if(CMAKE_COMPILER_IS_IAR)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --warn_about_c_style_casts --warnings_are_errors -Ohz")
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endif(CMAKE_COMPILER_IS_IAR)
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if(CMAKE_COMPILER_IS_MSVC)
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# Strictest warnings
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W3")
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endif(CMAKE_COMPILER_IS_MSVC)
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if(MBEDTLS_FATAL_WARNINGS)
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if(CMAKE_COMPILER_IS_MSVC)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /WX")
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endif(CMAKE_COMPILER_IS_MSVC)
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if(CMAKE_COMPILER_IS_CLANG OR CMAKE_COMPILER_IS_GNU)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
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if(UNSAFE_BUILD)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-error=cpp")
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set(CMAKE_C_FLAGS_ASAN "${CMAKE_C_FLAGS_ASAN} -Wno-error=cpp")
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set(CMAKE_C_FLAGS_ASANDBG "${CMAKE_C_FLAGS_ASANDBG} -Wno-error=cpp")
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endif(UNSAFE_BUILD)
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endif(CMAKE_COMPILER_IS_CLANG OR CMAKE_COMPILER_IS_GNU)
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endif(MBEDTLS_FATAL_WARNINGS)
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if(CMAKE_BUILD_TYPE STREQUAL "Coverage")
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if(CMAKE_COMPILER_IS_GNU OR CMAKE_COMPILER_IS_CLANG)
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set(CMAKE_SHARED_LINKER_FLAGS "--coverage")
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endif(CMAKE_COMPILER_IS_GNU OR CMAKE_COMPILER_IS_CLANG)
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endif(CMAKE_BUILD_TYPE STREQUAL "Coverage")
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if(LIB_INSTALL_DIR)
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else()
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set(LIB_INSTALL_DIR lib)
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endif()
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if(ENABLE_ZLIB_SUPPORT)
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find_package(ZLIB)
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if(ZLIB_FOUND)
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include_directories(${ZLIB_INCLUDE_DIR})
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endif(ZLIB_FOUND)
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endif(ENABLE_ZLIB_SUPPORT)
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add_subdirectory(include)
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add_subdirectory(3rdparty)
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list(APPEND libs ${thirdparty_lib})
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add_subdirectory(library)
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if(ENABLE_PROGRAMS)
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add_subdirectory(programs)
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endif()
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ADD_CUSTOM_TARGET(apidoc
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COMMAND doxygen mbedtls.doxyfile
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/doxygen)
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if(ENABLE_TESTING)
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enable_testing()
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add_subdirectory(tests)
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# additional convenience targets for Unix only
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if(UNIX)
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ADD_CUSTOM_TARGET(covtest
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COMMAND make test
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COMMAND programs/test/selftest
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COMMAND tests/compat.sh
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COMMAND tests/ssl-opt.sh
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)
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ADD_CUSTOM_TARGET(lcov
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COMMAND rm -rf Coverage
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COMMAND lcov --capture --initial --directory library/CMakeFiles/mbedtls.dir -o files.info
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COMMAND lcov --capture --directory library/CMakeFiles/mbedtls.dir -o tests.info
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COMMAND lcov --add-tracefile files.info --add-tracefile tests.info -o all.info
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COMMAND lcov --remove all.info -o final.info '*.h'
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COMMAND gendesc tests/Descriptions.txt -o descriptions
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COMMAND genhtml --title "mbed TLS" --description-file descriptions --keep-descriptions --legend --no-branch-coverage -o Coverage final.info
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COMMAND rm -f files.info tests.info all.info final.info descriptions
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)
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ADD_CUSTOM_TARGET(memcheck
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COMMAND sed -i.bak s+/usr/bin/valgrind+`which valgrind`+ DartConfiguration.tcl
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COMMAND ctest -O memcheck.log -D ExperimentalMemCheck
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COMMAND tail -n1 memcheck.log | grep 'Memory checking results:' > /dev/null
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COMMAND rm -f memcheck.log
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COMMAND mv DartConfiguration.tcl.bak DartConfiguration.tcl
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)
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endif(UNIX)
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# Make scripts needed for testing available in an out-of-source build.
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if (NOT ${CMAKE_CURRENT_BINARY_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
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link_to_source(scripts)
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# Copy (don't link) DartConfiguration.tcl, needed for memcheck, to
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# keep things simple with the sed commands in the memcheck target.
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configure_file(${CMAKE_CURRENT_SOURCE_DIR}/DartConfiguration.tcl
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${CMAKE_CURRENT_BINARY_DIR}/DartConfiguration.tcl COPYONLY)
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endif()
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endif()
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