1cmake_minimum_required(VERSION 3.0) 2 3# Defer enabling C and CXX languages. 4project(BoringSSL NONE) 5 6if(WIN32) 7 # On Windows, prefer cl over gcc if both are available. By default most of 8 # the CMake generators prefer gcc, even on Windows. 9 set(CMAKE_GENERATOR_CC cl) 10endif() 11 12include(sources.cmake) 13 14enable_language(C) 15enable_language(CXX) 16 17# This is a dummy target which all other targets depend on (manually - see other 18# CMakeLists.txt files). This gives us a hook to add any targets which need to 19# run before all other targets. 20add_custom_target(global_target) 21 22if(ANDROID) 23 # Android-NDK CMake files reconfigure the path and so Go and Perl won't be 24 # found. However, ninja will still find them in $PATH if we just name them. 25 if(NOT PERL_EXECUTABLE) 26 set(PERL_EXECUTABLE "perl") 27 endif() 28 if(NOT GO_EXECUTABLE) 29 set(GO_EXECUTABLE "go") 30 endif() 31else() 32 find_package(Perl REQUIRED) 33 find_program(GO_EXECUTABLE go) 34endif() 35 36if(CMAKE_SYSTEM_NAME STREQUAL "Linux" AND NOT CMAKE_CROSSCOMPILING) 37 find_package(PkgConfig QUIET) 38 if (PkgConfig_FOUND) 39 pkg_check_modules(LIBUNWIND libunwind-generic) 40 if(LIBUNWIND_FOUND) 41 add_definitions(-DBORINGSSL_HAVE_LIBUNWIND) 42 else() 43 message("libunwind not found. Disabling unwind tests.") 44 endif() 45 else() 46 message("pkgconfig not found. Disabling unwind tests.") 47 endif() 48endif() 49 50if(NOT GO_EXECUTABLE) 51 message(FATAL_ERROR "Could not find Go") 52endif() 53 54if(USE_CUSTOM_LIBCXX) 55 set(BORINGSSL_ALLOW_CXX_RUNTIME 1) 56endif() 57 58if(BORINGSSL_ALLOW_CXX_RUNTIME) 59 add_definitions(-DBORINGSSL_ALLOW_CXX_RUNTIME) 60endif() 61 62string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LOWER) 63if(NOT FIPS) 64 if(CMAKE_BUILD_TYPE_LOWER STREQUAL "relwithassert" OR 65 NOT CMAKE_BUILD_TYPE_LOWER MATCHES "rel") 66 add_definitions(-DBORINGSSL_DISPATCH_TEST) 67 # CMake automatically connects include_directories to the NASM 68 # command-line, but not add_definitions. 69 set(CMAKE_ASM_NASM_FLAGS "${CMAKE_ASM_NASM_FLAGS} -DBORINGSSL_DISPATCH_TEST") 70 endif() 71endif() 72 73# Add a RelWithAsserts build configuration. It is the same as Release, except it 74# does not define NDEBUG, so asserts run. 75foreach(VAR CMAKE_C_FLAGS CMAKE_CXX_FLAGS CMAKE_ASM_FLAGS) 76 string(REGEX REPLACE "(^| )[/-]DNDEBUG( |$)" " " "${VAR}_RELWITHASSERTS" 77 "${${VAR}_RELEASE}") 78endforeach() 79 80if(BORINGSSL_PREFIX AND BORINGSSL_PREFIX_SYMBOLS) 81 add_definitions(-DBORINGSSL_PREFIX=${BORINGSSL_PREFIX}) 82 # CMake automatically connects include_directories to the NASM command-line, 83 # but not add_definitions. 84 set(CMAKE_ASM_NASM_FLAGS "${CMAKE_ASM_NASM_FLAGS} -DBORINGSSL_PREFIX=${BORINGSSL_PREFIX}") 85 86 # Use "symbol_prefix_include" to store generated header files 87 include_directories(${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include) 88 add_custom_command( 89 OUTPUT symbol_prefix_include/boringssl_prefix_symbols.h 90 symbol_prefix_include/boringssl_prefix_symbols_asm.h 91 symbol_prefix_include/boringssl_prefix_symbols_nasm.inc 92 COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include 93 COMMAND ${GO_EXECUTABLE} run ${CMAKE_CURRENT_SOURCE_DIR}/util/make_prefix_headers.go -out ${CMAKE_CURRENT_BINARY_DIR}/symbol_prefix_include ${BORINGSSL_PREFIX_SYMBOLS} 94 DEPENDS util/make_prefix_headers.go 95 ${CMAKE_BINARY_DIR}/${BORINGSSL_PREFIX_SYMBOLS}) 96 97 # add_dependencies needs a target, not a file, so we add an intermediate 98 # target. 99 add_custom_target( 100 boringssl_prefix_symbols 101 DEPENDS symbol_prefix_include/boringssl_prefix_symbols.h 102 symbol_prefix_include/boringssl_prefix_symbols_asm.h 103 symbol_prefix_include/boringssl_prefix_symbols_nasm.inc) 104 add_dependencies(global_target boringssl_prefix_symbols) 105elseif(BORINGSSL_PREFIX OR BORINGSSL_PREFIX_SYMBOLS) 106 message(FATAL_ERROR "Must specify both or neither of BORINGSSL_PREFIX and BORINGSSL_PREFIX_SYMBOLS") 107endif() 108 109if(CMAKE_CXX_COMPILER_ID MATCHES "Clang") 110 set(CLANG 1) 111endif() 112 113if(CMAKE_SYSTEM_NAME STREQUAL "Emscripten") 114 set(EMSCRIPTEN 1) 115endif() 116 117if(CMAKE_COMPILER_IS_GNUCXX OR CLANG) 118 # Note clang-cl is odd and sets both CLANG and MSVC. We base our configuration 119 # primarily on our normal Clang one. 120 set(C_CXX_FLAGS "-Werror -Wformat=2 -Wsign-compare -Wmissing-field-initializers -Wwrite-strings -Wvla") 121 if(MSVC) 122 # clang-cl sets different default warnings than clang. It also treats -Wall 123 # as -Weverything, to match MSVC. Instead -W3 is the alias for -Wall. 124 # See http://llvm.org/viewvc/llvm-project?view=revision&revision=319116 125 set(C_CXX_FLAGS "${C_CXX_FLAGS} -W3 -Wno-unused-parameter -fmsc-version=1900") 126 # googletest suppresses warning C4996 via a pragma, but clang-cl does not 127 # honor it. Suppress it here to compensate. See https://crbug.com/772117. 128 set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wno-deprecated-declarations") 129 else() 130 if(EMSCRIPTEN) 131 # emscripten's emcc/clang does not accept the "-ggdb" flag. 132 set(C_CXX_FLAGS "${C_CXX_FLAGS} -g") 133 else() 134 set(C_CXX_FLAGS "${C_CXX_FLAGS} -ggdb") 135 endif() 136 137 set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wall -fvisibility=hidden -fno-common") 138 endif() 139 140 if(CLANG) 141 set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wnewline-eof -fcolor-diagnostics") 142 else() 143 # GCC (at least 4.8.4) has a bug where it'll find unreachable free() calls 144 # and declare that the code is trying to free a stack pointer. 145 set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wno-free-nonheap-object") 146 endif() 147 148 if(CLANG OR NOT "7.0.0" VERSION_GREATER CMAKE_C_COMPILER_VERSION) 149 set(C_CXX_FLAGS "${C_CXX_FLAGS} -Wimplicit-fallthrough") 150 endif() 151 152 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${C_CXX_FLAGS} -Wmissing-prototypes -Wold-style-definition -Wstrict-prototypes") 153 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${C_CXX_FLAGS} -Wmissing-declarations") 154 155 if(NOT MSVC) 156 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") 157 if(APPLE) 158 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++") 159 endif() 160 if(NOT BORINGSSL_ALLOW_CXX_RUNTIME) 161 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions -fno-rtti") 162 endif() 163 endif() 164 165 # In GCC, -Wmissing-declarations is the C++ spelling of -Wmissing-prototypes 166 # and using the wrong one is an error. In Clang, -Wmissing-prototypes is the 167 # spelling for both and -Wmissing-declarations is some other warning. 168 # 169 # https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gcc/Warning-Options.html#Warning-Options 170 # https://clang.llvm.org/docs/DiagnosticsReference.html#wmissing-prototypes 171 # https://clang.llvm.org/docs/DiagnosticsReference.html#wmissing-declarations 172 if(CLANG) 173 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wmissing-prototypes") 174 endif() 175 176 if(CMAKE_COMPILER_IS_GNUCXX AND "4.8" VERSION_GREATER CMAKE_C_COMPILER_VERSION) 177 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-array-bounds") 178 endif() 179 180elseif(MSVC) 181 set(MSVC_DISABLED_WARNINGS_LIST 182 "C4061" # enumerator 'identifier' in switch of enum 'enumeration' is not 183 # explicitly handled by a case label 184 # Disable this because it flags even when there is a default. 185 "C4100" # 'exarg' : unreferenced formal parameter 186 "C4127" # conditional expression is constant 187 "C4200" # nonstandard extension used : zero-sized array in 188 # struct/union. 189 "C4204" # nonstandard extension used: non-constant aggregate initializer 190 "C4221" # nonstandard extension used : 'identifier' : cannot be 191 # initialized using address of automatic variable 192 "C4242" # 'function' : conversion from 'int' to 'uint8_t', 193 # possible loss of data 194 "C4244" # 'function' : conversion from 'int' to 'uint8_t', 195 # possible loss of data 196 "C4267" # conversion from 'size_t' to 'int', possible loss of data 197 "C4371" # layout of class may have changed from a previous version of the 198 # compiler due to better packing of member '...' 199 "C4388" # signed/unsigned mismatch 200 "C4296" # '>=' : expression is always true 201 "C4350" # behavior change: 'std::_Wrap_alloc...' 202 "C4365" # '=' : conversion from 'size_t' to 'int', 203 # signed/unsigned mismatch 204 "C4389" # '!=' : signed/unsigned mismatch 205 "C4464" # relative include path contains '..' 206 "C4510" # 'argument' : default constructor could not be generated 207 "C4512" # 'argument' : assignment operator could not be generated 208 "C4514" # 'function': unreferenced inline function has been removed 209 "C4548" # expression before comma has no effect; expected expression with 210 # side-effect" caused by FD_* macros. 211 "C4610" # struct 'argument' can never be instantiated - user defined 212 # constructor required. 213 "C4623" # default constructor was implicitly defined as deleted 214 "C4625" # copy constructor could not be generated because a base class 215 # copy constructor is inaccessible or deleted 216 "C4626" # assignment operator could not be generated because a base class 217 # assignment operator is inaccessible or deleted 218 "C4628" # digraphs not supported with -Ze 219 "C4668" # 'symbol' is not defined as a preprocessor macro, replacing with 220 # '0' for 'directives' 221 # Disable this because GTest uses it everywhere. 222 "C4706" # assignment within conditional expression 223 "C4710" # 'function': function not inlined 224 "C4711" # function 'function' selected for inline expansion 225 "C4800" # 'int' : forcing value to bool 'true' or 'false' 226 # (performance warning) 227 "C4820" # 'bytes' bytes padding added after construct 'member_name' 228 "C5026" # move constructor was implicitly defined as deleted 229 "C5027" # move assignment operator was implicitly defined as deleted 230 "C5045" # Compiler will insert Spectre mitigation for memory load if 231 # /Qspectre switch specified 232 ) 233 set(MSVC_LEVEL4_WARNINGS_LIST 234 # See https://connect.microsoft.com/VisualStudio/feedback/details/1217660/warning-c4265-when-using-functional-header 235 "C4265" # class has virtual functions, but destructor is not virtual 236 ) 237 string(REPLACE "C" " -wd" MSVC_DISABLED_WARNINGS_STR 238 ${MSVC_DISABLED_WARNINGS_LIST}) 239 string(REPLACE "C" " -w4" MSVC_LEVEL4_WARNINGS_STR 240 ${MSVC_LEVEL4_WARNINGS_LIST}) 241 set(CMAKE_C_FLAGS "-utf-8 -Wall -WX ${MSVC_DISABLED_WARNINGS_STR} ${MSVC_LEVEL4_WARNINGS_STR}") 242 set(CMAKE_CXX_FLAGS "-utf-8 -Wall -WX ${MSVC_DISABLED_WARNINGS_STR} ${MSVC_LEVEL4_WARNINGS_STR}") 243endif() 244 245if(WIN32) 246 add_definitions(-D_HAS_EXCEPTIONS=0) 247 add_definitions(-DWIN32_LEAN_AND_MEAN) 248 add_definitions(-DNOMINMAX) 249 # Allow use of fopen. 250 add_definitions(-D_CRT_SECURE_NO_WARNINGS) 251 # VS 2017 and higher supports STL-only warning suppressions. 252 # A bug in CMake < 3.13.0 may cause the space in this value to 253 # cause issues when building with NASM. In that case, update CMake. 254 add_definitions("-D_STL_EXTRA_DISABLED_WARNINGS=4774 4987") 255endif() 256 257if((CMAKE_COMPILER_IS_GNUCXX AND CMAKE_C_COMPILER_VERSION VERSION_GREATER "4.7.99") OR 258 CLANG) 259 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wshadow") 260 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wshadow") 261endif() 262 263if(CMAKE_COMPILER_IS_GNUCXX) 264 if((CMAKE_C_COMPILER_VERSION VERSION_GREATER "4.8.99") OR CLANG) 265 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11") 266 else() 267 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99") 268 endif() 269endif() 270 271# pthread_rwlock_t requires a feature flag. 272if(NOT WIN32) 273 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=700") 274endif() 275 276if(FUZZ) 277 if(NOT CLANG) 278 message(FATAL_ERROR "You need to build with Clang for fuzzing to work") 279 endif() 280 281 if(CMAKE_C_COMPILER_VERSION VERSION_LESS "6.0.0") 282 message(FATAL_ERROR "You need Clang ≥ 6.0.0") 283 endif() 284 285 add_definitions(-DBORINGSSL_UNSAFE_DETERMINISTIC_MODE) 286 set(RUNNER_ARGS "-deterministic") 287 288 if(NOT NO_FUZZER_MODE) 289 add_definitions(-DBORINGSSL_UNSAFE_FUZZER_MODE) 290 set(RUNNER_ARGS ${RUNNER_ARGS} "-fuzzer" "-shim-config" "fuzzer_mode.json") 291 endif() 292 293 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address,fuzzer-no-link -fsanitize-coverage=edge,indirect-calls") 294 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address,fuzzer-no-link -fsanitize-coverage=edge,indirect-calls") 295endif() 296 297add_definitions(-DBORINGSSL_IMPLEMENTATION) 298 299if(BUILD_SHARED_LIBS) 300 add_definitions(-DBORINGSSL_SHARED_LIBRARY) 301 # Enable position-independent code globally. This is needed because 302 # some library targets are OBJECT libraries. 303 set(CMAKE_POSITION_INDEPENDENT_CODE TRUE) 304endif() 305 306if(MSAN) 307 if(NOT CLANG) 308 message(FATAL_ERROR "Cannot enable MSAN unless using Clang") 309 endif() 310 311 if(ASAN) 312 message(FATAL_ERROR "ASAN and MSAN are mutually exclusive") 313 endif() 314 315 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer") 316 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer") 317 set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer") 318endif() 319 320if(ASAN) 321 if(NOT CLANG) 322 message(FATAL_ERROR "Cannot enable ASAN unless using Clang") 323 endif() 324 325 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fsanitize-address-use-after-scope -fno-omit-frame-pointer") 326 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize-address-use-after-scope -fno-omit-frame-pointer") 327endif() 328 329if(CFI) 330 if(NOT CLANG) 331 message(FATAL_ERROR "Cannot enable CFI unless using Clang") 332 endif() 333 334 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=cfi -fno-sanitize-trap=cfi -flto=thin") 335 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=cfi -fno-sanitize-trap=cfi -flto=thin") 336 # We use Chromium's copy of clang, which requires -fuse-ld=lld if building 337 # with -flto. That, in turn, can't handle -ggdb. 338 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=lld") 339 string(REPLACE "-ggdb" "-g" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}") 340 string(REPLACE "-ggdb" "-g" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 341 # -flto causes object files to contain LLVM bitcode. Mixing those with 342 # assembly output in the same static library breaks the linker. 343 set(OPENSSL_NO_ASM "1") 344endif() 345 346if(TSAN) 347 if(NOT CLANG) 348 message(FATAL_ERROR "Cannot enable TSAN unless using Clang") 349 endif() 350 351 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=thread") 352 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread") 353 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=thread") 354endif() 355 356if(UBSAN) 357 if(NOT CLANG) 358 message(FATAL_ERROR "Cannot enable UBSAN unless using Clang") 359 endif() 360 361 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=undefined") 362 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined") 363 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=undefined") 364 365 if(NOT UBSAN_RECOVER) 366 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-sanitize-recover=undefined") 367 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-sanitize-recover=undefined") 368 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fno-sanitize-recover=undefined") 369 endif() 370endif() 371 372if(GCOV) 373 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage") 374 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage") 375endif() 376 377if(FIPS) 378 add_definitions(-DBORINGSSL_FIPS) 379 if(FIPS_BREAK_TEST) 380 add_definitions("-DBORINGSSL_FIPS_BREAK_${FIPS_BREAK_TEST}=1") 381 endif() 382 # The FIPS integrity check does not work for ASan and MSan builds. 383 if(NOT ASAN AND NOT MSAN) 384 if(BUILD_SHARED_LIBS) 385 set(FIPS_SHARED "1") 386 else() 387 set(FIPS_DELOCATE "1") 388 endif() 389 endif() 390 if(FIPS_SHARED) 391 # The Android CMake files set -ffunction-sections and -fdata-sections, 392 # which is incompatible with FIPS_SHARED. 393 set(CMAKE_C_FLAGS 394 "${CMAKE_C_FLAGS} -fno-function-sections -fno-data-sections") 395 set(CMAKE_CXX_FLAGS 396 "${CMAKE_CXX_FLAGS} -fno-function-sections -fno-data-sections") 397 endif() 398endif() 399 400if(OPENSSL_SMALL) 401 add_definitions(-DOPENSSL_SMALL) 402endif() 403 404if(CONSTANT_TIME_VALIDATION) 405 add_definitions(-DBORINGSSL_CONSTANT_TIME_VALIDATION) 406 # Asserts will often test secret data. 407 add_definitions(-DNDEBUG) 408endif() 409 410function(go_executable dest package) 411 set(godeps "${CMAKE_SOURCE_DIR}/util/godeps.go") 412 if(${CMAKE_VERSION} VERSION_LESS "3.7" OR 413 NOT ${CMAKE_GENERATOR} STREQUAL "Ninja") 414 # The DEPFILE parameter to add_custom_command is new as of CMake 3.7 and 415 # only works with Ninja. Query the sources at configure time. Additionally, 416 # everything depends on go.mod. That affects what external packages to use. 417 execute_process(COMMAND ${GO_EXECUTABLE} run ${godeps} -format cmake 418 -pkg ${package} 419 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} 420 OUTPUT_VARIABLE sources 421 RESULT_VARIABLE godeps_result) 422 add_custom_command(OUTPUT ${dest} 423 COMMAND ${GO_EXECUTABLE} build 424 -o ${CMAKE_CURRENT_BINARY_DIR}/${dest} ${package} 425 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} 426 DEPENDS ${sources} ${CMAKE_SOURCE_DIR}/go.mod) 427 else() 428 # Ninja expects the target in the depfile to match the output. This is a 429 # relative path from the build directory. 430 string(LENGTH "${CMAKE_BINARY_DIR}" root_dir_length) 431 math(EXPR root_dir_length "${root_dir_length} + 1") 432 string(SUBSTRING "${CMAKE_CURRENT_BINARY_DIR}" ${root_dir_length} -1 target) 433 set(target "${target}/${dest}") 434 435 set(depfile "${CMAKE_CURRENT_BINARY_DIR}/${dest}.d") 436 add_custom_command(OUTPUT ${dest} 437 COMMAND ${GO_EXECUTABLE} build 438 -o ${CMAKE_CURRENT_BINARY_DIR}/${dest} ${package} 439 COMMAND ${GO_EXECUTABLE} run ${godeps} -format depfile 440 -target ${target} -pkg ${package} -out ${depfile} 441 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} 442 DEPENDS ${godeps} ${CMAKE_SOURCE_DIR}/go.mod 443 DEPFILE ${depfile}) 444 endif() 445endfunction() 446 447# CMake's iOS support uses Apple's multiple-architecture toolchain. It takes an 448# architecture list from CMAKE_OSX_ARCHITECTURES, leaves CMAKE_SYSTEM_PROCESSOR 449# alone, and expects all architecture-specific logic to be conditioned within 450# the source files rather than the build. This does not work for our assembly 451# files, so we fix CMAKE_SYSTEM_PROCESSOR and only support single-architecture 452# builds. 453if(NOT OPENSSL_NO_ASM AND CMAKE_OSX_ARCHITECTURES) 454 list(LENGTH CMAKE_OSX_ARCHITECTURES NUM_ARCHES) 455 if(NOT ${NUM_ARCHES} EQUAL 1) 456 message(FATAL_ERROR "Universal binaries not supported.") 457 endif() 458 list(GET CMAKE_OSX_ARCHITECTURES 0 CMAKE_SYSTEM_PROCESSOR) 459endif() 460 461if(OPENSSL_NO_ASM) 462 add_definitions(-DOPENSSL_NO_ASM) 463 set(ARCH "generic") 464elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64") 465 set(ARCH "x86_64") 466elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "amd64") 467 set(ARCH "x86_64") 468elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "AMD64") 469 # cmake reports AMD64 on Windows, but we might be building for 32-bit. 470 if(CMAKE_CL_64) 471 set(ARCH "x86_64") 472 else() 473 set(ARCH "x86") 474 endif() 475elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86") 476 set(ARCH "x86") 477elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "i386") 478 set(ARCH "x86") 479elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "i686") 480 set(ARCH "x86") 481elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "aarch64") 482 set(ARCH "aarch64") 483elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "arm64") 484 set(ARCH "aarch64") 485# Apple A12 Bionic chipset which is added in iPhone XS/XS Max/XR uses arm64e architecture. 486elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "arm64e") 487 set(ARCH "aarch64") 488elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "^arm*") 489 set(ARCH "arm") 490elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "mips") 491 # Just to avoid the “unknown processor” error. 492 set(ARCH "generic") 493elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "ppc64le") 494 set(ARCH "ppc64le") 495else() 496 message(FATAL_ERROR "Unknown processor:" ${CMAKE_SYSTEM_PROCESSOR}) 497endif() 498 499if(ANDROID AND NOT ANDROID_NDK_REVISION AND ${ARCH} STREQUAL "arm") 500 # The third-party Android-NDK CMake files somehow fail to set the -march flag 501 # for assembly files. Without this flag, the compiler believes that it's 502 # building for ARMv5. 503 set(CMAKE_ASM_FLAGS "-march=${CMAKE_SYSTEM_PROCESSOR} ${CMAKE_ASM_FLAGS}") 504endif() 505 506if(USE_CUSTOM_LIBCXX) 507 if(NOT CLANG) 508 message(FATAL_ERROR "USE_CUSTOM_LIBCXX only supported with Clang") 509 endif() 510 511 # CMAKE_CXX_FLAGS ends up in the linker flags as well, so use 512 # add_compile_options. There does not appear to be a way to set 513 # language-specific compile-only flags. 514 add_compile_options("-nostdinc++") 515 set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -nostdlib++") 516 include_directories( 517 SYSTEM 518 util/bot/libcxx/include 519 util/bot/libcxxabi/include 520 ) 521 522 # This is patterned after buildtools/third_party/libc++/BUILD.gn and 523 # buildtools/third_party/libc++abi/BUILD.gn in Chromium. 524 525 file(GLOB LIBCXX_SOURCES "util/bot/libcxx/src/*.cpp") 526 file(GLOB LIBCXXABI_SOURCES "util/bot/libcxxabi/src/*.cpp") 527 528 # This file is meant for exception-less builds. 529 list(REMOVE_ITEM LIBCXXABI_SOURCES "trunk/src/cxa_noexception.cpp") 530 # libc++ also defines new and delete. 531 list(REMOVE_ITEM LIBCXXABI_SOURCES "trunk/src/stdlib_new_delete.cpp") 532 if(TSAN) 533 # ThreadSanitizer tries to intercept these symbols. Skip them to avoid 534 # symbol conflicts. 535 list(REMOVE_ITEM LIBCXXABI_SOURCES "trunk/src/cxa_guard.cpp") 536 endif() 537 538 add_library(libcxxabi ${LIBCXXABI_SOURCES}) 539 target_compile_definitions( 540 libcxxabi PRIVATE 541 -D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 542 ) 543 set_target_properties(libcxxabi PROPERTIES COMPILE_FLAGS "-Wno-missing-prototypes -Wno-implicit-fallthrough") 544 545 add_library(libcxx ${LIBCXX_SOURCES}) 546 if(ASAN OR MSAN OR TSAN) 547 # Sanitizers try to intercept new and delete. 548 target_compile_definitions( 549 libcxx PRIVATE 550 -D_LIBCPP_DISABLE_NEW_DELETE_DEFINITIONS 551 ) 552 endif() 553 target_compile_definitions( 554 libcxx PRIVATE 555 -D_LIBCPP_BUILDING_LIBRARY 556 -DLIBCXX_BUILDING_LIBCXXABI 557 ) 558 target_link_libraries(libcxx libcxxabi) 559endif() 560 561# Add minimal googletest targets. The provided one has many side-effects, and 562# googletest has a very straightforward build. 563add_library(boringssl_gtest third_party/googletest/src/gtest-all.cc) 564target_include_directories(boringssl_gtest PRIVATE third_party/googletest) 565 566include_directories(third_party/googletest/include) 567 568# Declare a dummy target to build all unit tests. Test targets should inject 569# themselves as dependencies next to the target definition. 570add_custom_target(all_tests) 571 572add_custom_command( 573 OUTPUT crypto_test_data.cc 574 COMMAND ${GO_EXECUTABLE} run util/embed_test_data.go ${CRYPTO_TEST_DATA} > 575 ${CMAKE_CURRENT_BINARY_DIR}/crypto_test_data.cc 576 DEPENDS util/embed_test_data.go ${CRYPTO_TEST_DATA} 577 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}) 578 579add_library(crypto_test_data OBJECT crypto_test_data.cc) 580 581add_subdirectory(crypto) 582add_subdirectory(ssl) 583add_subdirectory(ssl/test) 584add_subdirectory(tool) 585add_subdirectory(util/fipstools/cavp) 586add_subdirectory(util/fipstools/acvp/modulewrapper) 587add_subdirectory(decrepit) 588 589if(FUZZ) 590 if(LIBFUZZER_FROM_DEPS) 591 file(GLOB LIBFUZZER_SOURCES "util/bot/libFuzzer/*.cpp") 592 add_library(Fuzzer STATIC ${LIBFUZZER_SOURCES}) 593 # libFuzzer does not pass our aggressive warnings. It also must be built 594 # without -fsanitize-coverage options or clang crashes. 595 set_target_properties(Fuzzer PROPERTIES COMPILE_FLAGS "-Wno-shadow -Wno-format-nonliteral -Wno-missing-prototypes -fsanitize-coverage=0") 596 endif() 597 598 add_subdirectory(fuzz) 599endif() 600 601if(NOT ${CMAKE_VERSION} VERSION_LESS "3.2") 602 # USES_TERMINAL is only available in CMake 3.2 or later. 603 set(MAYBE_USES_TERMINAL USES_TERMINAL) 604endif() 605 606if(UNIX AND NOT APPLE AND NOT ANDROID) 607 set(HANDSHAKER_ARGS "-handshaker-path" $<TARGET_FILE:handshaker>) 608endif() 609 610add_custom_target( 611 run_tests 612 COMMAND ${GO_EXECUTABLE} run util/all_tests.go -build-dir 613 ${CMAKE_BINARY_DIR} 614 COMMAND cd ssl/test/runner && 615 ${GO_EXECUTABLE} test -shim-path $<TARGET_FILE:bssl_shim> 616 ${HANDSHAKER_ARGS} ${RUNNER_ARGS} 617 WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} 618 DEPENDS all_tests bssl_shim handshaker 619 ${MAYBE_USES_TERMINAL}) 620