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CMakeLists.txt
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cmake_minimum_required(VERSION 3.5..3.31)
if(POLICY CMP0091)
cmake_policy(SET CMP0091 NEW)
endif()
# Defer enabling C and CXX languages.
project(AWSLC NONE)
if(MSVC)
# On Windows, prefer cl over gcc if both are available. By default most of
# the CMake generators prefer gcc, even on Windows.
set(CMAKE_GENERATOR_CC cl)
endif()
if(ARCH STREQUAL "aarch64" AND CMAKE_GENERATOR MATCHES "Visual Studio" AND NOT "${CMAKE_VS_PLATFORM_TOOLSET}" MATCHES "ClangCL")
message(FATAL_ERROR "AWS-LC Windows/ARM64 assembly code requires ClangCL. Current toolset: ${CMAKE_VS_PLATFORM_TOOLSET}")
endif()
include(sources.cmake)
include(TestBigEndian)
if(POLICY CMP0077)
cmake_policy(SET CMP0077 NEW) #option does nothing when a normal variable of the same name exists.
endif()
option(BUILD_TESTING "Build all test targets for AWS-LC" ON)
option(BUILD_LIBSSL "Build libssl for AWS-LC" ON)
option(BUILD_TOOL "Build bssl tool for AWS-LC" ON)
option(DISABLE_PERL "Disable Perl for AWS-LC" OFF)
option(DISABLE_GO "Disable Go for AWS-LC" OFF)
option(ENABLE_FIPS_ENTROPY_CPU_JITTER "Enable FIPS entropy source: CPU Jitter" OFF)
option(ENABLE_DATA_INDEPENDENT_TIMING "Enable automatic setting/resetting Data-Independent Timing
(DIT) flag in cryptographic functions. Currently only applicable to Arm64 (except on Windows)" OFF)
include(cmake/go.cmake)
enable_language(C)
# Configure entropy source in case of FIPS build
if(FIPS)
message(STATUS "FIPS build mode configured")
if(ENABLE_FIPS_ENTROPY_CPU_JITTER)
add_definitions(-DFIPS_ENTROPY_SOURCE_JITTER_CPU)
add_subdirectory(third_party/jitterentropy)
message(STATUS "FIPS entropy source method configured: CPU Jitter")
else()
add_definitions(-DFIPS_ENTROPY_SOURCE_PASSIVE)
message(STATUS "FIPS entropy source method configured: Passive")
endif()
endif()
if(${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
# OpenBSD by defaults links with --execute-only this is problematic for two reasons:
# 1. The FIPS shared and static builds need to compute the module signature hash by reading the .text section
# 2. s2n-bignum x86 assembly sources still have references to static data in the .text section
if(NOT BUILD_SHARED_LIBS)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--no-execute-only")
else()
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-execute-only")
endif()
endif()
if(CMAKE_HOST_SYSTEM_NAME STREQUAL "SunOS" AND NOT CMAKE_CROSSCOMPILING)
# Determine if the host is running an illumos distribution:
execute_process(COMMAND /usr/bin/uname -o OUTPUT_VARIABLE UNAME_O
OUTPUT_STRIP_TRAILING_WHITESPACE)
if (UNAME_O STREQUAL "illumos")
set(HOST_ILLUMOS 1)
endif()
if (UNAME_O STREQUAL "Solaris")
set(HOST_SOLARIS 1)
endif()
if (HOST_ILLUMOS)
#
# illumos systems require linking libsocket and libnsl to get various
# networking routines sometimes found in libc on other platforms:
#
if(NOT BUILD_SHARED_LIBS)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lsocket -lnsl")
else()
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -lsocket -lnsl")
endif()
endif()
endif()
# Tests and libssl both require the CXX language to be enabled. If a consumer
# chooses to disable building the tests and libssl, do not enable CXX
if(BUILD_TESTING OR BUILD_LIBSSL)
enable_language(CXX)
endif()
if(ENABLE_CLANG_TIDY)
find_program(CLANG_TIDY_CMD NAMES clang-tidy)
set(CMAKE_VERBOSE_MAKEFILE ON)
if(NOT CLANG_TIDY_CMD)
message(WARNING "clang-tidy is not found!")
set(CMAKE_CXX_CLANG_TIDY "" CACHE STRING "" FORCE)
else()
message(STATUS "clang-tidy found: ${CLANG_TIDY_CMD}")
set(CLANG_TIDY_EXTRA_ARGS
"-extra-arg=-Wno-unknown-warning-option"
)
set(CMAKE_C_CLANG_TIDY ${CLANG_TIDY_CMD} "--config-file=${AWSLC_SOURCE_DIR}/.clang-tidy")
set(CMAKE_CXX_CLANG_TIDY ${CLANG_TIDY_CMD} "--config-file=${AWSLC_SOURCE_DIR}/.clang-tidy")
endif()
endif()
if (NOT DEFINED CMAKE_CXX_STANDARD)
set(CMAKE_CXX_STANDARD 11)
endif()
set(CMAKE_CXX_STANDARD_REQUIRED ON)
if (NOT DEFINED CMAKE_C_STANDARD)
try_compile(
RESULT
${AWSLC_BINARY_DIR}
SOURCES "${CMAKE_CURRENT_LIST_DIR}/tests/compiler_features_tests/c11.c"
COMPILE_DEFINITIONS -c -std=c11)
if(RESULT)
set(CMAKE_C_STANDARD 11)
else()
set(CMAKE_C_STANDARD 99)
endif()
endif ()
set(CMAKE_C_STANDARD_REQUIRED ON)
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
set(CLANG 1)
elseif(CMAKE_C_COMPILER_ID MATCHES "GNU")
set(GCC 1)
endif()
if (NOT WIN32 AND NOT APPLE)
include(GNUInstallDirs)
elseif(NOT DEFINED CMAKE_INSTALL_LIBDIR)
set(CMAKE_INSTALL_LIBDIR "lib")
set(CMAKE_INSTALL_INCLUDEDIR "include")
set(CMAKE_INSTALL_BINDIR "bin")
endif()
install(DIRECTORY include/openssl
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
COMPONENT Development
PATTERN boringssl_prefix_symbols.h EXCLUDE
PATTERN boringssl_prefix_symbols_asm.h EXCLUDE
PATTERN boringssl_prefix_symbols_nasm.inc EXCLUDE
)
if (TEST_SYSGENID_PATH)
message(STATUS "Setting AWSLC_SNAPSAFE_TESTING=1")
add_definitions(-DAWSLC_SNAPSAFE_TESTING=1)
message(STATUS "Setting AWSLC_SYSGENID_PATH=${TEST_SYSGENID_PATH}")
add_definitions(-DAWSLC_SYSGENID_PATH=\"${TEST_SYSGENID_PATH}\")
endif()
if(NOT DISABLE_PERL)
find_package(Perl REQUIRED)
endif()
if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux" AND BUILD_TESTING AND NOT CMAKE_CROSSCOMPILING)
find_package(PkgConfig QUIET)
if (PkgConfig_FOUND)
pkg_check_modules(LIBUNWIND libunwind-generic)
if(LIBUNWIND_FOUND)
add_definitions(-DBORINGSSL_HAVE_LIBUNWIND)
else()
message("libunwind not found. Disabling unwind tests.")
endif()
else()
message("pkgconfig not found. Disabling unwind tests.")
endif()
endif()
if(NOT GO_EXECUTABLE)
message(STATUS "Go not found. Disabling some code generation and using pre-generated code in generated-src/")
endif()
if (NOT PERL_EXECUTABLE)
message(STATUS "Perl not found. Disabling some code generation and using pre-generated code in generated-src/")
endif()
if(NOT PERL_EXECUTABLE OR NOT GO_EXECUTABLE)
set(GENERATE_CODE_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/generated-src")
endif()
if(USE_CUSTOM_LIBCXX)
set(BORINGSSL_ALLOW_CXX_RUNTIME 1)
endif()
if(BORINGSSL_ALLOW_CXX_RUNTIME)
add_definitions(-DBORINGSSL_ALLOW_CXX_RUNTIME)
endif()
string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LOWER)
if(NOT FIPS)
if("${CMAKE_BUILD_TYPE_LOWER}" STREQUAL "relwithassert" OR
NOT CMAKE_BUILD_TYPE_LOWER MATCHES "rel")
add_definitions(-DBORINGSSL_DISPATCH_TEST)
# CMake automatically connects include_directories to the NASM
# command-line, but not add_definitions.
set(CMAKE_ASM_NASM_FLAGS "${CMAKE_ASM_NASM_FLAGS} -DBORINGSSL_DISPATCH_TEST")
elseif(CMAKE_BUILD_TYPE_LOWER MATCHES "rel")
add_definitions(-DBORINGSSL_RELEASE_BUILD)
endif()
endif()
# Add a RelWithAsserts build configuration. It is the same as Release, except it
# does not define NDEBUG, so asserts run.
foreach(VAR CMAKE_C_FLAGS CMAKE_CXX_FLAGS CMAKE_ASM_FLAGS)
string(REGEX REPLACE "(^| )[/-]DNDEBUG( |$)" " " "${VAR}_RELWITHASSERTS"
"${${VAR}_RELEASE}")
endforeach()
if(BORINGSSL_PREFIX AND BORINGSSL_PREFIX_SYMBOLS AND GO_EXECUTABLE)
message(STATUS "Prefix build configured: building headers using prefix \"${BORINGSSL_PREFIX}\" and symbols file \"${BORINGSSL_PREFIX_SYMBOLS}\"")
if(IS_ABSOLUTE ${BORINGSSL_PREFIX_SYMBOLS})
set(BORINGSSL_PREFIX_SYMBOLS_PATH ${BORINGSSL_PREFIX_SYMBOLS})
else()
set(BORINGSSL_PREFIX_SYMBOLS_PATH ${AWSLC_BINARY_DIR}/${BORINGSSL_PREFIX_SYMBOLS})
endif()
add_custom_command(
OUTPUT symbol_prefix_include/openssl/boringssl_prefix_symbols.h
symbol_prefix_include/openssl/boringssl_prefix_symbols_asm.h
symbol_prefix_include/openssl/boringssl_prefix_symbols_nasm.inc
COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl
COMMAND ${GO_EXECUTABLE} run ${CMAKE_CURRENT_SOURCE_DIR}/util/make_prefix_headers.go -out ${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl -prefix ${BORINGSSL_PREFIX} ${BORINGSSL_PREFIX_SYMBOLS_PATH}
COMMAND ${CMAKE_COMMAND} -E remove
${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl/boringssl_prefix_symbols.h.bak
${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl/boringssl_prefix_symbols_asm.h.bak
${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl/boringssl_prefix_symbols_nasm.inc.bak
DEPENDS util/make_prefix_headers.go
${BORINGSSL_PREFIX_SYMBOLS_PATH})
# add_dependencies needs a target, not a file, so we add an intermediate
# target.
add_custom_target(
boringssl_prefix_symbols
DEPENDS symbol_prefix_include/openssl/boringssl_prefix_symbols.h
symbol_prefix_include/openssl/boringssl_prefix_symbols_asm.h
symbol_prefix_include/openssl/boringssl_prefix_symbols_nasm.inc)
install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
COMPONENT Development
)
elseif(BORINGSSL_PREFIX AND BORINGSSL_PREFIX_HEADERS)
message(STATUS "Prefix build configured: performing build using prefix \"${BORINGSSL_PREFIX}\" and headers path \"${BORINGSSL_PREFIX_HEADERS}\"")
if(IS_ABSOLUTE ${BORINGSSL_PREFIX_HEADERS})
set(BORINGSSL_PREFIX_HEADERS_PATH ${BORINGSSL_PREFIX_HEADERS})
else()
set(BORINGSSL_PREFIX_HEADERS_PATH ${AWSLC_BINARY_DIR}/${BORINGSSL_PREFIX_HEADERS})
endif()
file(COPY ${BORINGSSL_PREFIX_HEADERS_PATH}/openssl/boringssl_prefix_symbols.h DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl)
file(COPY ${BORINGSSL_PREFIX_HEADERS_PATH}/openssl/boringssl_prefix_symbols_asm.h DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl)
file(COPY ${BORINGSSL_PREFIX_HEADERS_PATH}/openssl/boringssl_prefix_symbols_nasm.inc DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl)
add_custom_target(boringssl_prefix_symbols)
install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include/openssl
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
COMPONENT Development
)
elseif(BORINGSSL_PREFIX OR BORINGSSL_PREFIX_SYMBOLS)
message(FATAL_ERROR "Must specify both or neither of BORINGSSL_PREFIX and BORINGSSL_PREFIX_SYMBOLS")
elseif((BORINGSSL_PREFIX AND BORINGSSL_PREFIX_SYMBOLS) AND NOT GO_EXECUTABLE)
message(FATAL_ERROR "Must have Go installed when using BORINGSSL_PREFIX and BORINGSSL_PREFIX_SYMBOLS")
else()
add_custom_target(boringssl_prefix_symbols)
install(DIRECTORY include/openssl
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
COMPONENT Development
PATTERN boringssl_prefix_symbols.h
PATTERN boringssl_prefix_symbols_asm.h
PATTERN boringssl_prefix_symbols_nasm.inc
)
endif()
if("${CMAKE_SYSTEM_NAME}" STREQUAL "Emscripten")
set(EMSCRIPTEN 1)
endif()
macro(check_compiler file_to_test flag_to_set)
try_compile(
RESULT
${AWSLC_BINARY_DIR}
SOURCES "${CMAKE_CURRENT_LIST_DIR}/tests/compiler_features_tests/${file_to_test}"
COMPILE_DEFINITIONS "-Werror"
OUTPUT_VARIABLE ERROR_MESSAGE)
if(RESULT)
set(COMPILER_CHECK_FLAGS "${COMPILER_CHECK_FLAGS} -D${flag_to_set}")
message(STATUS "${file_to_test} probe is positive, enabling ${flag_to_set}")
else()
message(STATUS "${file_to_test} probe is negative, NOT enabling ${flag_to_set}:")
# Some build applications use regexes on build output to highlight build
# errors. Below, we modify a compiler error message to avoid that a negative
# probe is considered an error in such build applications.
string(REPLACE ": error:"
": compiler_error:" ERROR_MESSAGE_PROCESSED
${ERROR_MESSAGE})
message(STATUS " ${ERROR_MESSAGE_PROCESSED}")
endif()
endmacro()
macro(check_run file_to_test flag_to_set compile_flags)
message(STATUS "Run check_run file_to_test '${file_to_test}', "
"flag_to_set '${flag_to_set}', "
"and compile_flags '${compile_flags}'.")
try_run(
${flag_to_set}
COMPILE_RESULT
"${CMAKE_CURRENT_BINARY_DIR}"
"${CMAKE_CURRENT_LIST_DIR}/tests/compiler_features_tests/${file_to_test}"
COMPILE_DEFINITIONS "${compile_flags}"
OUTPUT_VARIABLE COMPILE_AND_RUN_OUTPUT)
if (NOT COMPILE_RESULT)
message(WARNING "COMPILE_AND_RUN_OUTPUT ${COMPILE_AND_RUN_OUTPUT}")
endif()
endmacro()
# Some ancient assemblers don't know about AVX instructions, which is an
# assumption we make for some of the assembly implementations. This flag
# can be set to handle such cases.
option(MY_ASSEMBLER_IS_TOO_OLD_FOR_AVX "Exclude AVX code from the build" OFF)
# Some assemblers know about AVX but not ADX, AVX2 or AVX512 instructions, e.g. gcc 4.8.2.
# This flag can be set to handle such cases.
# Note:
# * Although this flag name implies an effect on AVX512 instructions, it's also
# intended to avoid generating ADX and AVX2 instructions.
# * This flag name has "512AVX" instead of "AVX512" so that it doesn't
# include the entire flag -DMY_ASSEMBLER_IS_TOO_OLD_FOR_AVX and match
# to it in the Perl files checks.
option(MY_ASSEMBLER_IS_TOO_OLD_FOR_512AVX "Exclude AVX512 code from the build" OFF)
if(MY_ASSEMBLER_IS_TOO_OLD_FOR_AVX)
add_definitions(-DMY_ASSEMBLER_IS_TOO_OLD_FOR_AVX)
add_definitions(-DMY_ASSEMBLER_IS_TOO_OLD_FOR_512AVX)
set(MY_ASSEMBLER_IS_TOO_OLD_FOR_512AVX ON)
message(STATUS "MY_ASSEMBLER_IS_TOO_OLD_FOR_AVX selected, removing all AVX optimisations")
endif()
if(MY_ASSEMBLER_IS_TOO_OLD_FOR_512AVX)
add_definitions(-DMY_ASSEMBLER_IS_TOO_OLD_FOR_512AVX)
message(STATUS "MY_ASSEMBLER_IS_TOO_OLD_FOR_512AVX selected, removing ADX, AVX2 and AVX512 optimisations")
endif()
if (GCC)
# All versions of GCC that AWS-LC supports has this warning
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wredundant-decls")
# Detect if memcmp is wrongly stripped like strcmp.
# If exists, let CMake generate a warning.
# memcmp bug link https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95189.
# CMake try_run requires these variables must be preset.
# https://cmake.org/cmake/help/latest/command/try_run.html
set(MEMCMP_INVALID_STRIPPED "")
set(MEMCMP_INVALID_STRIPPED__TRYRUN_OUTPUT "")
# See https://gitlab.kitware.com/cmake/cmake/-/issues/16920 for why we set this to 2
# During the `try_run` commands invoked by `check_run` a test program is run for the threading library.
# This test is run expecting two threads, and this variable isn't set, for some systems
# (particularly for systems using cross-compilation) causing our test to run without 2 threads and fail.
# We set this variable here to allow these builds to succeed and keep these tests around to make sure
# that we properly detect the compiler bugs that we are trying to test for with these `try_run` calls.
set(THREADS_PTHREAD_ARG "2" CACHE STRING "Forcibly set by CMakeLists.txt." FORCE)
if (CMAKE_BUILD_TYPE_LOWER MATCHES "release")
# CMAKE_C_FLAGS_RELEASE enables `-O3`.
check_run(memcmp_invalid_stripped_check.c MEMCMP_INVALID_STRIPPED "${CMAKE_C_FLAGS_RELEASE}")
elseif(CMAKE_BUILD_TYPE_LOWER MATCHES "relwithdebinfo")
# CMAKE_C_FLAGS_RELEASE enables `-O2`.
check_run(memcmp_invalid_stripped_check.c MEMCMP_INVALID_STRIPPED "${CMAKE_C_FLAGS_RELWITHDEBINFO}")
endif()
if (MEMCMP_INVALID_STRIPPED)
message(WARNING "Currently, GCC ${CMAKE_C_COMPILER_VERSION} is not supported due to a memcmp related bug reported in "
"https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95189.\n"
"We strongly recommend against using the GCC ${CMAKE_C_COMPILER_VERSION} compiler.")
endif ()
endif ()
if(GCC OR CLANG)
# Note clang-cl is odd and sets both CLANG and MSVC. We base our configuration
# primarily on our normal Clang one.
if (NOT CMAKE_VERSION VERSION_GREATER "3.1.0")
message(STATUS "Adding CMAKE_C_FLAGS -std=c${CMAKE_C_STANDARD}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c${CMAKE_C_STANDARD}")
else()
message(STATUS "Setting CMAKE_C_STANDARD=${CMAKE_C_STANDARD}")
endif()
# TODO(CryptoAlg-759): enable '-Wpedantic' if awslc has to follow c99 spec.
if(CLANG OR (GCC AND CMAKE_C_COMPILER_VERSION VERSION_GREATER "4.1.3"))
# GCC 4.1.3 and below do not support all of these flags or they raise false positives.
if (MSVC)
# clang-cl sets different default warnings than clang. It also treats -Wall
# as -Weverything, to match MSVC. Instead -W3 is the alias for -Wall.
# See http://llvm.org/viewvc/llvm-project?view=revision&revision=319116
set(C_CXX_FLAGS "${C_CXX_FLAGS} -W3 -fmsc-version=1900")
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wno-deprecated-declarations")
else()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wextra")
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wall -fvisibility=hidden -fno-common")
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -Wno-newline-eof")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wunused -Wcomment -Wchar-subscripts -Wuninitialized -Wshadow")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wwrite-strings -Wformat-security -Wunused-result -Wno-overlength-strings")
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wno-c11-extensions -Wvla -Wtype-limits -Wno-unused-parameter")
endif()
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Werror -Wformat=2 -Wsign-compare -Wmissing-field-initializers -Wwrite-strings")
if((GCC AND CMAKE_C_COMPILER_VERSION VERSION_GREATER "8") OR
(CMAKE_C_COMPILER_ID MATCHES "Clang" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS "13"))
# GCC 8.x added a warning called -Wcast-function-type to the -Wextra umbrella.
# Also suppress for all clang versions supporting this warning.
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-cast-function-type")
endif()
if(CMAKE_BUILD_TYPE_LOWER STREQUAL "debug" OR CMAKE_BUILD_TYPE_LOWER STREQUAL "relwithdebinfo")
if (MSVC)
set(C_CXX_FLAGS "${C_CXX_FLAGS} /Zi")
else()
if(EMSCRIPTEN)
# emscripten's emcc/clang does not accept the "-ggdb" flag.
set(C_CXX_FLAGS "${C_CXX_FLAGS} -g")
else()
set(C_CXX_FLAGS "${C_CXX_FLAGS} -ggdb")
endif()
endif()
endif()
if(MINGW)
# Some MinGW compilers set _WIN32_WINNT to an older version (Windows Server 2003)
# See: https://learn.microsoft.com/en-us/cpp/porting/modifying-winver-and-win32-winnt?view=msvc-170
# Support Windows 7 and later.
add_definitions(-D_WIN32_WINNT=_WIN32_WINNT_WIN7)
endif()
if(CLANG)
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wnewline-eof -fcolor-diagnostics")
elseif(CMAKE_C_COMPILER_VERSION VERSION_GREATER "4.1.3")
# GCC (at least 4.8.4) has a bug where it'll find unreachable free() calls
# and declare that the code is trying to free a stack pointer. GCC 4.1.3 and lower
# doesn't support this flag and can't use it.
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wno-free-nonheap-object")
# GCC (from at least 4.8) does not include -Wmissing-braces in -Wall due to Bug 25137.
# This warning is turned on everywhere internally however, so we have to define it here
# to check that our changes don't break the build.
# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25137
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wmissing-braces")
endif()
# -Wstring-concatenation was added in Clang 12.0.0, which corresponds to
# AppleClang 13.0.0 per the table in
# https://en.wikipedia.org/wiki/Xcode#Toolchain_versions
if((CMAKE_C_COMPILER_ID STREQUAL "Clang" AND
NOT(CMAKE_C_COMPILER_VERSION VERSION_LESS "12.0.0")) OR
(CMAKE_C_COMPILER_ID STREQUAL "AppleClang" AND
NOT(CMAKE_C_COMPILER_VERSION VERSION_LESS "13.0.0")))
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wstring-concatenation")
endif()
if(CLANG OR NOT "7.0.0" VERSION_GREATER CMAKE_C_COMPILER_VERSION)
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wimplicit-fallthrough")
endif()
if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "5")
set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wformat-signedness")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${C_CXX_FLAGS} -Wmissing-prototypes -Wold-style-definition -Wstrict-prototypes")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${C_CXX_FLAGS} -Wmissing-declarations")
if(NOT MSVC)
if (NOT CMAKE_CXX_STANDARD)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
endif ()
if(APPLE)
set(CMAKE_MACOSX_RPATH 1)
endif()
if(NOT BORINGSSL_ALLOW_CXX_RUNTIME)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions -fno-rtti")
endif()
endif()
# In GCC, -Wmissing-declarations is the C++ spelling of -Wmissing-prototypes
# and using the wrong one is an error. In Clang, -Wmissing-prototypes is the
# spelling for both and -Wmissing-declarations is some other warning.
#
# https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gcc/Warning-Options.html#Warning-Options
# https://clang.llvm.org/docs/DiagnosticsReference.html#wmissing-prototypes
# https://clang.llvm.org/docs/DiagnosticsReference.html#wmissing-declarations
if(CLANG)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wmissing-prototypes")
endif()
if(GCC AND "4.8" VERSION_GREATER CMAKE_C_COMPILER_VERSION AND CMAKE_C_COMPILER_VERSION VERSION_GREATER "4.1.3")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-array-bounds")
endif()
check_compiler("stdalign_check.c" AWS_LC_STDALIGN_AVAILABLE)
check_compiler("builtin_swap_check.c" AWS_LC_BUILTIN_SWAP_SUPPORTED)
if(FIPS AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
check_compiler("linux_u32.c" AWS_LC_URANDOM_U32)
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMPILER_CHECK_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILER_CHECK_FLAGS}")
elseif(MSVC)
set(MSVC_DISABLED_WARNINGS_LIST
"C4061" # enumerator 'identifier' in switch of enum 'enumeration' is not
# explicitly handled by a case label
# Disable this because it flags even when there is a default.
"C4100" # 'exarg' : unreferenced formal parameter
"C4127" # conditional expression is constant
"C4146" # unary minus operator applied to unsigned type, result still unsigned
"C4200" # nonstandard extension used : zero-sized array in
# struct/union.
"C4204" # nonstandard extension used: non-constant aggregate initializer
"C4221" # nonstandard extension used : 'identifier' : cannot be
# initialized using address of automatic variable
"C4242" # 'function' : conversion from 'int' to 'uint8_t',
# possible loss of data
"C4244" # 'function' : conversion from 'int' to 'uint8_t',
# possible loss of data
"C4267" # conversion from 'size_t' to 'int', possible loss of data
"C4371" # layout of class may have changed from a previous version of the
# compiler due to better packing of member '...'
"C4388" # signed/unsigned mismatch
"C4296" # '>=' : expression is always true
"C4350" # behavior change: 'std::_Wrap_alloc...'
"C4365" # '=' : conversion from 'size_t' to 'int',
# signed/unsigned mismatch
"C4389" # '!=' : signed/unsigned mismatch
"C4464" # relative include path contains '..'
"C4510" # 'argument' : default constructor could not be generated
"C4512" # 'argument' : assignment operator could not be generated
"C4514" # 'function': unreferenced inline function has been removed
"C4548" # expression before comma has no effect; expected expression with
# side-effect" caused by FD_* macros.
"C4610" # struct 'argument' can never be instantiated - user defined
# constructor required.
"C4623" # default constructor was implicitly defined as deleted
"C4625" # copy constructor could not be generated because a base class
# copy constructor is inaccessible or deleted
"C4626" # assignment operator could not be generated because a base class
# assignment operator is inaccessible or deleted
"C4628" # digraphs not supported with -Ze
"C4668" # 'symbol' is not defined as a preprocessor macro, replacing with
# '0' for 'directives'
# Disable this because GTest uses it everywhere.
"C4706" # assignment within conditional expression
"C4710" # 'function': function not inlined
"C4711" # function 'function' selected for inline expansion
"C4800" # 'int' : forcing value to bool 'true' or 'false'
# (performance warning)
"C4820" # 'bytes' bytes padding added after construct 'member_name'
"C5026" # move constructor was implicitly defined as deleted
"C5027" # move assignment operator was implicitly defined as deleted
"C5045" # Compiler will insert Spectre mitigation for memory load if
# /Qspectre switch specified
"C4255" # no function prototype given: converting '()' to '(void)'
"C4152" # non standard extension, function/data ptr conversion in expression
# used in bcm.c to check functions are inside the FIPS module memory region
"C4295" # array is too small to include a terminating null character
"C4701" # potentially uninitialized local
"C4505" # unreferenced local function has been removed
"C4702" # unreachable code in bcm.c power on tests
"C4191" # unsafe conversion from 'type of expression' to 'type required'
# TODO remove once https://github.com/openssl/openssl/issues/18957 is resolved
"C4996" # deprecated warnings using low level functions in OpenSSL 3.0
"C4746" # consider using __iso_volatile_load/store intrinsic functions
"C5264" # 'variable-name': 'const' variable is not used
"C5266" # 'const' qualifier on return type has no effect
"C5267" # definition of implicit copy constructor for '...' is deprecated because it has a user-provided destructor
)
set(MSVC_LEVEL4_WARNINGS_LIST
# See https://connect.microsoft.com/VisualStudio/feedback/details/1217660/warning-c4265-when-using-functional-header
"C4265" # class has virtual functions, but destructor is not virtual
)
string(REPLACE "C" " -wd" MSVC_DISABLED_WARNINGS_STR
${MSVC_DISABLED_WARNINGS_LIST})
string(REPLACE "C" " -w4" MSVC_LEVEL4_WARNINGS_STR
${MSVC_LEVEL4_WARNINGS_LIST})
set(CMAKE_C_FLAGS "-utf-8 -Wall -WX ${MSVC_DISABLED_WARNINGS_STR} ${MSVC_LEVEL4_WARNINGS_STR}")
set(CMAKE_CXX_FLAGS "-utf-8 -Wall -WX ${MSVC_DISABLED_WARNINGS_STR} ${MSVC_LEVEL4_WARNINGS_STR}")
# If we're using MSVC on Windows in FIPS mode with RelWithDebInfo then we want to override some of the default RelWithDebInfo flags.
# This fixes the problem we run into with RelWithDebInfo and FIPS mode on Windows where the FIPS module wouldn't span the expected symbol.
if(CMAKE_BUILD_TYPE_LOWER MATCHES "relwithdebinfo" AND FIPS)
# /Zi requires the /debug flag for executables/libraries that we want .pdb files for.
# We want to replace the default /debug flag with /DEBUG:FULL, to explicitly make sure that the .pdb files can be used on machines other than one on which it's built.
string(REPLACE "/debug" "/DEBUG:FULL" CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO}")
string(REPLACE "/debug" "/DEBUG:FULL" CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}")
# The /debug flag also turns off the /OPT linker flag so we want to turn them back on across the board.
set(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO} /OPT:REF,ICF,LBR")
set(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO} /OPT:REF,ICF,LBR")
endif()
endif()
if(WIN32)
add_definitions(-D_HAS_EXCEPTIONS=0)
add_definitions(-DWIN32_LEAN_AND_MEAN)
add_definitions(-DNOMINMAX)
# Allow use of fopen.
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
# VS 2017 and higher supports STL-only warning suppressions.
# A bug in CMake < 3.13.0 may cause the space in this value to
# cause issues when building with NASM. In that case, update CMake.
add_definitions("-D_STL_EXTRA_DISABLED_WARNINGS=4774 4987")
endif()
if((GCC AND CMAKE_C_COMPILER_VERSION VERSION_GREATER "4.9.99") OR
CLANG)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wshadow")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wshadow")
endif()
# pthread_rwlock_t on Linux requires a feature flag. We limit this to Linux
# because, on Apple platforms, it instead disables APIs we use. See compat(5)
# and sys/cdefs.h. Reportedly, FreeBSD also breaks when this is set. See
# https://crbug.com/boringssl/471.
if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=700")
endif()
if(FUZZ)
if(NOT CLANG)
message(FATAL_ERROR "You need to build with Clang for fuzzing to work")
endif()
if(CMAKE_C_COMPILER_VERSION VERSION_LESS "6.0.0")
message(FATAL_ERROR "You need Clang ≥ 6.0.0")
endif()
add_definitions(-DBORINGSSL_UNSAFE_DETERMINISTIC_MODE)
set(RUNNER_ARGS "-deterministic")
if(NOT NO_FUZZER_MODE)
add_definitions(-DBORINGSSL_UNSAFE_FUZZER_MODE)
set(RUNNER_ARGS ${RUNNER_ARGS} "-fuzzer" "-shim-config" "fuzzer_mode.json")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address,fuzzer-no-link -fsanitize-coverage=edge,indirect-calls")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address,fuzzer-no-link -fsanitize-coverage=edge,indirect-calls")
endif()
if(BUILD_SHARED_LIBS)
add_definitions(-DBORINGSSL_SHARED_LIBRARY)
# Enable position-independent code globally. This is needed because
# some library targets are OBJECT libraries.
set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
elseif(NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
endif()
if(MSAN)
if(NOT CLANG)
message(FATAL_ERROR "Cannot enable MSAN unless using Clang")
endif()
if(ASAN)
message(FATAL_ERROR "ASAN and MSAN are mutually exclusive")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer")
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer")
endif()
if(ASAN)
if(NOT CLANG)
message(FATAL_ERROR "Cannot enable ASAN unless using Clang")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fsanitize-address-use-after-scope -fno-omit-frame-pointer")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize-address-use-after-scope -fno-omit-frame-pointer")
endif()
if(CFI)
if(NOT CLANG)
message(FATAL_ERROR "Cannot enable CFI unless using Clang")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=cfi -fno-sanitize-trap=cfi -flto=thin")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=cfi -fno-sanitize-trap=cfi -flto=thin")
# We use Chromium's copy of clang, which requires -fuse-ld=lld if building
# with -flto. That, in turn, can't handle -ggdb.
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=lld")
string(REPLACE "-ggdb" "-g" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
string(REPLACE "-ggdb" "-g" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
# -flto causes object files to contain LLVM bitcode. Mixing those with
# assembly output in the same static library breaks the linker.
set(OPENSSL_NO_ASM "1")
endif()
if(TSAN)
if(NOT CLANG)
message(FATAL_ERROR "Cannot enable TSAN unless using Clang")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=thread")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=thread")
endif()
if(UBSAN)
if(NOT CLANG)
message(FATAL_ERROR "Cannot enable UBSAN unless using Clang")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=undefined")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=undefined")
if(NOT UBSAN_RECOVER)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-sanitize-recover=undefined")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-sanitize-recover=undefined")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fno-sanitize-recover=undefined")
endif()
endif()
if(GCOV)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --coverage -O0")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --coverage -O0")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")
endif()
if(KEEP_ASM_LOCAL_SYMBOLS)
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -Wa,-L")
endif()
if(FIPS)
if(NOT GO_EXECUTABLE OR NOT PERL_EXECUTABLE)
message(FATAL_ERROR "Building AWS-LC for FIPS requires Go and Perl")
endif()
if(NOT BUILD_SHARED_LIBS AND NOT (NOT WIN32 AND NOT APPLE))
message(FATAL_ERROR "Static FIPS build of AWS-LC is supported only on Linux")
endif()
if(WIN32 AND CMAKE_BUILD_TYPE_LOWER STREQUAL "debug")
message(FATAL_ERROR "Windows Debug build is not supported with FIPS, use Release or RelWithDebInfo")
endif()
string(REGEX MATCH "(^| )-DAWSLC_FIPS_FAILURE_CALLBACK($| )" FIPS_CALLBACK_ENABLED "${CMAKE_C_FLAGS}")
if(FIPS_CALLBACK_ENABLED AND BUILD_SHARED_LIBS)
message(FATAL_ERROR "AWSLC_FIPS_FAILURE_CALLBACK only supported with the static library build of AWS-LC")
endif ()
add_definitions(-DBORINGSSL_FIPS)
# The FIPS integrity check does not work for ASan and MSan builds.
if(NOT ASAN AND NOT MSAN)
if(BUILD_SHARED_LIBS)
set(FIPS_SHARED "1")
else()
set(FIPS_DELOCATE "1")
endif()
endif()
if(FIPS_SHARED AND ANDROID)
# The Android CMake files set -ffunction-sections and -fdata-sections,
# which is incompatible with FIPS_SHARED.
set(CMAKE_C_FLAGS
"${CMAKE_C_FLAGS} -fno-function-sections -fno-data-sections")
set(CMAKE_CXX_FLAGS
"${CMAKE_CXX_FLAGS} -fno-function-sections -fno-data-sections")
endif()
endif()
if(OPENSSL_SMALL)
add_definitions(-DOPENSSL_SMALL)
endif()
if(CONSTANT_TIME_VALIDATION)
add_definitions(-DBORINGSSL_CONSTANT_TIME_VALIDATION)
endif()
# CMake's iOS support uses Apple's multiple-architecture toolchain. It takes an
# architecture list from CMAKE_OSX_ARCHITECTURES, leaves CMAKE_SYSTEM_PROCESSOR
# alone, and expects all architecture-specific logic to be conditioned within
# the source files rather than the build. This does not work for our assembly
# files, so we fix CMAKE_SYSTEM_PROCESSOR and only support single-architecture
# builds.
if(NOT OPENSSL_NO_ASM AND CMAKE_OSX_ARCHITECTURES)
list(LENGTH CMAKE_OSX_ARCHITECTURES NUM_ARCHES)
if(NOT NUM_ARCHES EQUAL 1)
message(FATAL_ERROR "Universal binaries not supported.")
endif()
list(GET CMAKE_OSX_ARCHITECTURES 0 CMAKE_SYSTEM_PROCESSOR)
endif()
if(MALLOC_FAILURE_TESTING)
add_definitions(-DBORINGSSL_MALLOC_FAILURE_TESTING)
endif()
TEST_BIG_ENDIAN(BIG_ENDIAN)
if(OPENSSL_NO_SSE2_FOR_TESTING)
add_definitions(-DOPENSSL_NO_SSE2_FOR_TESTING)
endif()
if(HOST_ILLUMOS OR HOST_SOLARIS)
#
# CMAKE_SYSTEM_PROCESSOR unfortunately comes from the output of "uname -p",
# which on illumos systems emits "i386". Instead, use the value from
# "isainfo -n", which prints "the name of the native instruction set used by
# portable applications"; e.g., "amd64".
#
execute_process(COMMAND /usr/bin/isainfo -n OUTPUT_VARIABLE
CMAKE_SYSTEM_PROCESSOR_LOWER OUTPUT_STRIP_TRAILING_WHITESPACE)
else()
# Some consumers might use upper-case (e.g.) "X86" or "X86_64".
# Matching below is based on lower-case.
string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" CMAKE_SYSTEM_PROCESSOR_LOWER)
endif()
if(OPENSSL_NO_ASM)
add_definitions(-DOPENSSL_NO_ASM)
set(ARCH "generic")
elseif(CMAKE_SYSTEM_PROCESSOR_LOWER MATCHES "x86_64|amd64")
# If ARCH is originally detected as 64-bit, perform an additional check
# to determine whether to build as 32-bit or 64-bit. This happens in some
# cases such as when building in Docker, where the host-level architecture is 64-bit
# but the Docker image should result in building for a 32-bit architecture.
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(ARCH "x86_64")
else()
set(ARCH "x86")
endif()
elseif(CMAKE_SYSTEM_PROCESSOR_LOWER MATCHES "x86|i386|i686")
set(ARCH "x86")
elseif(CMAKE_SYSTEM_PROCESSOR_LOWER MATCHES "arm64.*|aarch64")
# If ARCH is originally detected as 64-bit, perform an additional check
# to determine whether to build as 32-bit or 64-bit. This happens in some
# cases such as when building on an 64-bit CPU where the OS is 32-bit.
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(ARCH "aarch64")
else()
set(ARCH "arm")
endif()
elseif(CMAKE_SYSTEM_PROCESSOR_LOWER MATCHES "^arm*")
set(ARCH "arm")
elseif(CMAKE_SYSTEM_PROCESSOR_LOWER MATCHES "powerpc64le|ppc64le")
set(ARCH "ppc64le")
elseif(CMAKE_SYSTEM_PROCESSOR_LOWER STREQUAL "riscv64")
set(ARCH "riscv64")
elseif(CMAKE_SYSTEM_PROCESSOR_LOWER STREQUAL "s390x")
set(ARCH "s390x")
elseif(CMAKE_SYSTEM_PROCESSOR_LOWER STREQUAL "loongarch64")
set(ARCH "loongarch64")
else()
message(STATUS "Unknown processor found. Using generic implementations. Processor: " ${CMAKE_SYSTEM_PROCESSOR})
set(ARCH "generic")
endif()
# If target ARCH is 32-bit x86, ensure SSE2 is enabled since it's used by the optimized assembly.
# To build for targets that do not support SSE2, use the `OPENSSL_NO_ASM` flag.
if(ARCH STREQUAL "x86" AND NOT OPENSSL_NO_SSE2_FOR_TESTING)
# Most compilers enable SSE2 in 32-bit x86 by default, but in some cases GCC and Clang don't.
# See: https://github.com/aws/aws-lc/commit/6fe8dcbe96e580ea85233fdb98a142e42951b70b
if(GCC OR CLANG)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse2")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2")
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -msse2")
endif()
endif()
if(ENABLE_DATA_INDEPENDENT_TIMING)
add_definitions(-DENABLE_AUTO_SET_RESET_DIT)
endif()
if(USE_CUSTOM_LIBCXX)
if(NOT CLANG)
message(FATAL_ERROR "USE_CUSTOM_LIBCXX only supported with Clang")
endif()
# The docker images set an environment variable to the llvm project directory which the sandbox builds will use,
# you can also pass in the llvm project path as a CMake parameter which takes precedence over the environment variable
if(DEFINED ENV{LLVM_PROJECT_HOME} AND NOT LLVM_PROJECT_HOME)
set(LLVM_PROJECT_HOME $ENV{LLVM_PROJECT_HOME})
endif()
if(NOT LLVM_PROJECT_HOME)
message(FATAL "Could not find path to LLVM project, must set LLVM_PROJECT_HOME environment variable or pass in -DLLVM_PROJECT_HOME")
endif()
# CMAKE_CXX_FLAGS ends up in the linker flags as well, so use
# add_compile_options. There does not appear to be a way to set
# language-specific compile-only flags.
add_compile_options("-nostdinc++")
set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -nostdlib++")
include_directories(
SYSTEM
util/bot/libcxx-config
${LLVM_PROJECT_HOME}/libcxx/include
${LLVM_PROJECT_HOME}/libcxxabi/include
)
# This is patterned after buildtools/third_party/libc++/BUILD.gn and
# buildtools/third_party/libc++abi/BUILD.gn in Chromium.
file(GLOB LIBCXX_SOURCES "${LLVM_PROJECT_HOME}/libcxx/src/*.cpp" "${LLVM_PROJECT_HOME}/libcxx/src/ryu/*.cpp")
file(GLOB LIBCXXABI_SOURCES "${LLVM_PROJECT_HOME}/libcxxabi/src/*.cpp")
# This file is meant for exception-less builds.
list(REMOVE_ITEM LIBCXXABI_SOURCES "${LLVM_PROJECT_HOME}/libcxxabi/src/cxa_noexception.cpp")
# libc++ also defines new and delete.
list(REMOVE_ITEM LIBCXXABI_SOURCES "${LLVM_PROJECT_HOME}/libcxxabi/src/stdlib_new_delete.cpp")
if(TSAN)
# ThreadSanitizer tries to intercept these symbols. Skip them to avoid
# symbol conflicts.
list(REMOVE_ITEM LIBCXXABI_SOURCES "${LLVM_PROJECT_HOME}/libcxxabi/src/cxa_guard.cpp")
endif()
add_library(libcxxabi ${LIBCXXABI_SOURCES})
target_compile_definitions(
libcxxabi PRIVATE
-D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS
)
add_library(libcxx ${LIBCXX_SOURCES})
if(ASAN OR MSAN OR TSAN)
# Sanitizers try to intercept new and delete.
target_compile_definitions(
libcxx PRIVATE
-D_LIBCPP_DISABLE_NEW_DELETE_DEFINITIONS
)
endif()
target_compile_definitions(
libcxx PRIVATE
-D_LIBCPP_BUILDING_LIBRARY
-DLIBCXX_BUILDING_LIBCXXABI
)
set_target_properties(
libcxx libcxxabi PROPERTIES
COMPILE_FLAGS "-Wno-missing-prototypes -Wno-implicit-fallthrough"
# libc++ and libc++abi must be built in C++20 mode.
CXX_STANDARD 20
CXX_STANDARD_REQUIRED TRUE
)
# libc++abi depends on libc++ internal headers.
set_property(TARGET libcxx libcxxabi APPEND PROPERTY INCLUDE_DIRECTORIES "${LLVM_PROJECT_HOME}/libcxx/src")
target_link_libraries(libcxx libcxxabi)
endif()
if(BUILD_TESTING)
# Add minimal googletest targets. The provided one has many side-effects, and
# googletest has a very straightforward build.
add_library(boringssl_gtest third_party/googletest/src/gtest-all.cc)
if(USE_CUSTOM_LIBCXX)
target_link_libraries(boringssl_gtest libcxx)
endif()
if(BUILD_SHARED_LIBS)
# This is needed for the Windows build to correctly annotate GTest's API with __declspec(dllexport)
target_compile_options(boringssl_gtest PRIVATE -DGTEST_CREATE_SHARED_LIBRARY=1)
endif()
target_include_directories(
boringssl_gtest
PUBLIC third_party/googletest/include
PRIVATE third_party/googletest
)
# Declare a dummy target to build all unit tests. Test targets should inject
# themselves as dependencies next to the target definition.
add_custom_target(all_tests)
# On Windows, CRYPTO_TEST_DATA is too long to fit in command-line limits.
# TODO(davidben): CMake 3.12 has a list(JOIN) command. Use that when we've
# updated the minimum version.
set(EMBED_TEST_DATA_ARGS "")
foreach(arg ${CRYPTO_TEST_DATA})
set(EMBED_TEST_DATA_ARGS "${EMBED_TEST_DATA_ARGS}${arg}\n")
endforeach()
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/embed_test_data_args.txt"
"${EMBED_TEST_DATA_ARGS}")
if(GO_EXECUTABLE)
add_custom_command(
OUTPUT crypto_test_data.cc
COMMAND ${GO_EXECUTABLE} run util/embed_test_data.go -file-list
"${CMAKE_CURRENT_BINARY_DIR}/embed_test_data_args.txt" >
"${CMAKE_CURRENT_BINARY_DIR}/crypto_test_data.cc"
DEPENDS util/embed_test_data.go ${CRYPTO_TEST_DATA}
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
else()
add_custom_command(