| # Copyright 2016 Google Inc. |
| # |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| declare_args() { |
| ar = "ar" |
| cc = "cc" |
| cxx = "c++" |
| |
| if (is_android) { |
| if (host_os == "win") { |
| ar = "$ndk/toolchains/$ndk_gccdir-4.9/prebuilt/$ndk_host/$ndk_target/bin/ar.exe" |
| cc = "$ndk/toolchains/llvm/prebuilt/$ndk_host/bin/clang.exe" |
| cxx = "$ndk/toolchains/llvm/prebuilt/$ndk_host/bin/clang++.exe" |
| } else { |
| ar = "$ndk/toolchains/$ndk_gccdir-4.9/prebuilt/$ndk_host/$ndk_target/bin/ar" |
| cc = "$ndk/toolchains/llvm/prebuilt/$ndk_host/bin/clang" |
| cxx = "$ndk/toolchains/llvm/prebuilt/$ndk_host/bin/clang++" |
| } |
| } |
| |
| windk = "C:/Program Files (x86)/Microsoft Visual Studio 14.0" |
| |
| extra_cflags = [] |
| extra_cflags_c = [] |
| extra_cflags_cc = [] |
| extra_ldflags = [] |
| |
| cc_wrapper = "" |
| malloc = "" |
| } |
| |
| if (host_os == "win") { |
| python = "python.bat" |
| stamp = "cmd.exe /c echo >" |
| } else { |
| python = "python" |
| stamp = "touch" |
| } |
| |
| is_clang = is_android || is_ios || is_mac || (cc == "clang" && cxx == "clang++") |
| if (!is_clang && !is_win) { |
| is_clang = exec_script("is_clang.py", |
| [ |
| cc, |
| cxx, |
| ], |
| "value") |
| } |
| |
| if (is_ios) { |
| if (is_tvos) { |
| sdk = "appletvos" |
| if (target_cpu == "x86" || target_cpu == "x64") { |
| sdk = "appletvsimulator" |
| } |
| } else { |
| sdk = "iphoneos" |
| if (target_cpu == "x86" || target_cpu == "x64") { |
| sdk = "iphonesimulator" |
| } |
| } |
| ios_sysroot = exec_script("find_ios_sysroot.py", [ sdk ], "trim string") |
| } |
| |
| config("default") { |
| asmflags = [] |
| cflags = [] |
| cflags_c = [] |
| cflags_cc = [] |
| defines = [] |
| ldflags = [] |
| libs = [] |
| |
| if (is_win) { |
| cflags += [ |
| "/FS", # Preserve previous PDB behavior. |
| "/bigobj", # Some of our files are bigger than the regular limits. |
| "/WX", # Treat warnings as errors. |
| "/utf-8", # Set Source and Executable character sets to UTF-8. |
| ] |
| defines += [ |
| "_CRT_SECURE_NO_WARNINGS", # Disables warnings about sscanf(). |
| "_HAS_EXCEPTIONS=0", # Disables exceptions in MSVC STL. |
| "WIN32_LEAN_AND_MEAN", |
| "NOMINMAX", |
| ] |
| include_dirs = [ |
| "$windk/VC/include", |
| |
| # For local builds. |
| "$windk/../Windows Kits/10/Include/10.0.10150.0/ucrt", |
| "$windk/../Windows Kits/8.1/Include/shared", |
| "$windk/../Windows Kits/8.1/Include/um", |
| "$windk/../Windows Kits/8.1/Include/winrt", |
| |
| # For builds using win_toolchain asset. |
| "$windk/win_sdk/Include/10.0.14393.0/shared", |
| "$windk/win_sdk/Include/10.0.14393.0/ucrt", |
| "$windk/win_sdk/Include/10.0.14393.0/um", |
| "$windk/win_sdk/Include/10.0.14393.0/winrt", |
| ] |
| lib_dirs = [ |
| # For local builds. |
| "$windk/../Windows Kits/10/Lib/10.0.10150.0/ucrt/$target_cpu", |
| "$windk/../Windows Kits/8.1/Lib/winv6.3/um/$target_cpu", |
| |
| # For builds using win_toolchain asset. |
| "$windk/win_sdk/Lib/10.0.14393.0/ucrt/$target_cpu", |
| "$windk/win_sdk/Lib/10.0.14393.0/um/$target_cpu", |
| ] |
| if (target_cpu == "x86") { |
| lib_dirs += [ "$windk/VC/lib" ] |
| } else { |
| lib_dirs += [ "$windk/VC/lib/amd64" ] |
| } |
| } else { |
| cflags += [ |
| "-fstrict-aliasing", |
| "-fPIC", |
| "-fvisibility=hidden", |
| "-Werror", |
| ] |
| cflags_cc += [ |
| "-std=c++11", |
| "-fno-threadsafe-statics", |
| "-fvisibility-inlines-hidden", |
| ] |
| } |
| |
| if (current_cpu == "arm") { |
| cflags += [ |
| "-march=armv7-a", |
| "-mfpu=neon", |
| "-mthumb", |
| ] |
| } else if (current_cpu == "mipsel") { |
| cflags += [ |
| "-no-integrated-as", # Clang <4.0 doesn't understand 'usw' mnemonic. |
| "-march=mips32r2", |
| "-mdspr2", |
| ] |
| } else if (current_cpu == "x86" && !is_win) { |
| asmflags += [ "-m32" ] |
| cflags += [ |
| "-m32", |
| "-msse2", |
| "-mfpmath=sse", |
| ] |
| ldflags += [ "-m32" ] |
| } |
| |
| if (malloc != "" && !is_win) { |
| cflags += [ |
| "-fno-builtin-malloc", |
| "-fno-builtin-calloc", |
| "-fno-builtin-realloc", |
| "-fno-builtin-free", |
| ] |
| libs += [ malloc ] |
| } |
| |
| if (is_android) { |
| asmflags += [ |
| "--target=$ndk_target", |
| "-B$ndk/toolchains/$ndk_gccdir-4.9/prebuilt/$ndk_host/$ndk_target/bin", |
| ] |
| cflags += [ |
| "--sysroot=$ndk/platforms/$ndk_platform", |
| "--target=$ndk_target", |
| "-B$ndk/toolchains/$ndk_gccdir-4.9/prebuilt/$ndk_host/$ndk_target/bin", |
| ] |
| cflags_cc += [ |
| "-isystem$ndk/sources/android/support/include", |
| "-isystem$ndk/sources/cxx-stl/gnu-libstdc++/4.9/include", |
| "-isystem$ndk/sources/cxx-stl/gnu-libstdc++/4.9/libs/$ndk_stdlib/include", |
| ] |
| ldflags += [ |
| "--sysroot=$ndk/platforms/$ndk_platform", |
| "--target=$ndk_target", |
| "-B$ndk/toolchains/$ndk_gccdir-4.9/prebuilt/$ndk_host/$ndk_target/bin", |
| ] |
| lib_dirs = [ |
| "$ndk/sources/cxx-stl/gnu-libstdc++/4.9/libs/$ndk_stdlib", |
| "$ndk/toolchains/$ndk_gccdir-4.9/prebuilt/$ndk_host/lib/gcc/$ndk_target/4.9.x", |
| ] |
| |
| if (current_cpu == "mips64el") { |
| # The r13 NDK omits /usr/lib from the MIPS64 sysroots, but Clang searches |
| # for /usr/lib64 as $PATH_TO_USR_LIB/../lib64. If there's no /usr/lib, |
| # it can't find /usr/lib64. We must point Clang at /usr/lib64 manually. |
| lib_dirs += [ "$ndk/platforms/$ndk_platform/usr/lib64" ] |
| ldflags += [ "-B$ndk/platforms/$ndk_platform/usr/lib64" ] |
| } |
| |
| libs += [ "gnustl_static" ] |
| } |
| |
| if (is_ios) { |
| _target = target_cpu |
| if (target_cpu == "arm") { |
| _target = "armv7" |
| } else if (target_cpu == "x86") { |
| _target = "i386" |
| } else if (target_cpu == "x64") { |
| _target = "x86_64" |
| } |
| asmflags += [ |
| "-isysroot", |
| ios_sysroot, |
| "-arch", |
| _target, |
| ] |
| cflags += [ |
| "-isysroot", |
| ios_sysroot, |
| "-arch", |
| _target, |
| ] |
| cflags_cc += [ "-stdlib=libc++" ] |
| ldflags += [ |
| "-isysroot", |
| ios_sysroot, |
| "-arch", |
| _target, |
| "-stdlib=libc++", |
| ] |
| libs += [ "objc" ] |
| } |
| |
| if (is_linux) { |
| libs += [ "pthread" ] |
| } |
| |
| if (sanitize != "") { |
| # You can either pass the sanitizers directly, e.g. "address,undefined", |
| # or pass one of the couple common aliases used by the bots. |
| sanitizers = sanitize |
| if (sanitize == "ASAN") { |
| sanitizers = "address,bool,function,integer-divide-by-zero,nonnull-attribute,null,object-size,return,returns-nonnull-attribute,shift,signed-integer-overflow,unreachable,vla-bound,vptr" |
| } else if (sanitize == "TSAN") { |
| sanitizers = "thread" |
| } else if (sanitize == "MSAN") { |
| sanitizers = "memory" |
| } |
| |
| cflags += [ |
| "-fsanitize=$sanitizers", |
| "-fno-sanitize-recover=$sanitizers", |
| "-fsanitize-blacklist=" + rebase_path("../tools/xsan.blacklist"), |
| ] |
| ldflags += [ "-fsanitize=$sanitizers" ] |
| if (sanitizers == "memory") { |
| cflags += [ "-fsanitize-memory-track-origins" ] |
| cflags_cc += [ "-stdlib=libc++" ] |
| ldflags += [ "-stdlib=libc++" ] |
| } |
| } |
| } |
| |
| config("no_exceptions") { |
| # Exceptions are disabled by default on Windows. (Use /EHsc to enable them.) |
| if (!is_win) { |
| cflags_cc = [ "-fno-exceptions" ] |
| } |
| } |
| |
| config("warnings") { |
| cflags = [] |
| cflags_cc = [] |
| cflags_objc = [] |
| if (is_win) { |
| cflags += [ |
| "/W3", # Turn on lots of warnings. |
| |
| # Disable a bunch of warnings: |
| "/wd4244", # conversion from 'float' to 'int', possible loss of data |
| "/wd4267", # conversion from 'size_t' to 'int', possible loss of data |
| "/wd4800", # forcing value to bool 'true' or 'false' (performance warning) |
| |
| # Probably only triggers when /EHsc is enabled. |
| "/wd4291", # no matching operator delete found; |
| # memory will not be freed if initialization throws an exception |
| ] |
| } else { |
| cflags += [ |
| "-Wall", |
| "-Wextra", |
| "-Winit-self", |
| "-Wpointer-arith", |
| "-Wsign-compare", |
| "-Wvla", |
| |
| "-Wno-deprecated-declarations", |
| "-Wno-maybe-uninitialized", |
| ] |
| cflags_cc += [ "-Wnon-virtual-dtor" ] |
| |
| if (is_clang) { |
| cflags += [ |
| "-Weverything", |
| "-Wno-unknown-warning-option", # Let older Clangs ignore newer Clangs' warnings. |
| ] |
| |
| if ((target_cpu == "x86" && is_android) || |
| (target_cpu == "arm" && is_ios)) { |
| # Clang seems to think new/malloc will only be 4-byte aligned on x86 Android and 32-bit iOS. |
| # We're pretty sure it's actually 8-byte alignment. |
| cflags += [ "-Wno-over-aligned" ] |
| } |
| |
| cflags += [ |
| "-Wno-cast-align", |
| "-Wno-conditional-uninitialized", |
| "-Wno-conversion", |
| "-Wno-disabled-macro-expansion", |
| "-Wno-documentation", |
| "-Wno-documentation-unknown-command", |
| "-Wno-double-promotion", |
| "-Wno-exit-time-destructors", # TODO: OK outside libskia |
| "-Wno-float-conversion", |
| "-Wno-float-equal", |
| "-Wno-format-nonliteral", |
| "-Wno-global-constructors", # TODO: OK outside libskia |
| "-Wno-gnu-zero-variadic-macro-arguments", |
| "-Wno-missing-prototypes", |
| "-Wno-missing-variable-declarations", |
| "-Wno-pedantic", |
| "-Wno-reserved-id-macro", |
| "-Wno-shadow", |
| "-Wno-shift-sign-overflow", |
| "-Wno-sign-conversion", |
| "-Wno-signed-enum-bitfield", |
| "-Wno-switch-enum", |
| "-Wno-undef", |
| "-Wno-unreachable-code", |
| "-Wno-unreachable-code-break", |
| "-Wno-unreachable-code-return", |
| "-Wno-unused-macros", |
| "-Wno-unused-member-function", |
| ] |
| cflags_cc += [ |
| "-Wno-abstract-vbase-init", |
| "-Wno-weak-vtables", |
| ] |
| |
| # We are unlikely to want to fix these. |
| cflags += [ |
| "-Wno-covered-switch-default", |
| "-Wno-deprecated", |
| "-Wno-implicit-fallthrough", |
| "-Wno-missing-noreturn", |
| "-Wno-old-style-cast", |
| "-Wno-padded", |
| ] |
| cflags_cc += [ |
| "-Wno-c++98-compat", |
| "-Wno-c++98-compat-pedantic", |
| "-Wno-undefined-func-template", |
| ] |
| cflags_objc += [ |
| "-Wno-direct-ivar-access", |
| "-Wno-objc-interface-ivars", |
| ] |
| } |
| } |
| } |
| config("warnings_except_public_headers") { |
| if (!is_win) { |
| cflags = [ "-Wno-unused-parameter" ] |
| } |
| } |
| |
| config("extra_flags") { |
| cflags = extra_cflags |
| cflags_c = extra_cflags_c |
| cflags_cc = extra_cflags_cc |
| ldflags = extra_ldflags |
| } |
| |
| config("debug_symbols") { |
| # It's annoying to wait for full debug symbols to push over |
| # to Android devices. -gline-tables-only is a lot slimmer. |
| if (is_android) { |
| cflags = [ "-gline-tables-only" ] |
| } else if (is_win) { |
| cflags = [ "/Zi" ] |
| ldflags = [ "/DEBUG" ] |
| } else { |
| cflags = [ "-g" ] |
| } |
| } |
| |
| config("no_rtti") { |
| if (sanitize != "ASAN") { # -fsanitize=vptr requires RTTI |
| if (is_win) { |
| cflags_cc = [ "/GR-" ] |
| } else { |
| cflags_cc = [ "-fno-rtti" ] |
| } |
| } |
| } |
| |
| config("release") { |
| if (is_win) { |
| cflags = [ |
| "/O2", |
| "/Zc:inline", |
| "/GS-", |
| ] |
| ldflags = [ |
| "/OPT:ICF", |
| "/OPT:REF", |
| ] |
| } else { |
| cflags = [ |
| "-O3", |
| "-fdata-sections", |
| "-ffunction-sections", |
| ] |
| if (is_mac || is_ios) { |
| ldflags = [ "-dead_strip" ] |
| } else { |
| ldflags = [ "-Wl,--gc-sections" ] |
| } |
| } |
| defines = [ "NDEBUG" ] |
| } |
| |
| config("executable") { |
| if (is_android) { |
| ldflags = [ "-pie" ] |
| } else if (is_mac) { |
| ldflags = [ "-Wl,-rpath,@loader_path/." ] |
| } else if (is_linux) { |
| ldflags = [ |
| "-rdynamic", |
| "-Wl,-rpath,\$ORIGIN", |
| ] |
| } else if (is_win) { |
| ldflags = [ |
| "/SUBSYSTEM:CONSOLE", # Quiet "no subsystem specified; CONSOLE assumed". |
| "/INCREMENTAL:NO", # Quiet warnings about failing to incrementally link by never trying to. |
| ] |
| } |
| } |
| |
| toolchain("msvc") { |
| lib_dir_switch = "/LIBPATH:" |
| |
| bin = "$windk/VC/bin/amd64" |
| env_setup = "" |
| if (target_cpu == "x86") { |
| bin += "_x86" |
| env_setup = "cmd /c $windk/win_sdk/bin/SetEnv.cmd /x86 && " |
| } |
| |
| tool("asm") { |
| command = "$env_setup$bin/ml64.exe /nologo /c /Fo {{output}} {{source}}" |
| outputs = [ |
| "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.obj", |
| ] |
| description = "assemble {{source}}" |
| } |
| |
| tool("cc") { |
| rspfile = "{{output}}.rsp" |
| precompiled_header_type = "msvc" |
| pdbname = "{{target_out_dir}}/{{label_name}}_c.pdb" |
| |
| # Label names may have spaces so pdbname must be quoted. |
| command = "$env_setup$bin/cl.exe /nologo /showIncludes /FC @$rspfile /c {{source}} /Fo{{output}} /Fd\"$pdbname\"" |
| depsformat = "msvc" |
| outputs = [ |
| "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.obj", |
| ] |
| rspfile_content = "{{defines}} {{include_dirs}} {{cflags}} {{cflags_c}}" |
| description = "compile {{source}}" |
| } |
| |
| tool("cxx") { |
| rspfile = "{{output}}.rsp" |
| precompiled_header_type = "msvc" |
| pdbname = "{{target_out_dir}}/{{label_name}}_c.pdb" |
| |
| # Label names may have spaces so pdbname must be quoted. |
| command = "$env_setup$bin/cl.exe /nologo /showIncludes /FC @$rspfile /c {{source}} /Fo{{output}} /Fd\"$pdbname\"" |
| depsformat = "msvc" |
| outputs = [ |
| "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.obj", |
| ] |
| rspfile_content = "{{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}}" |
| description = "compile {{source}}" |
| } |
| |
| tool("alink") { |
| rspfile = "{{output}}.rsp" |
| |
| command = "$env_setup$bin/lib.exe /nologo /ignore:4221 {{arflags}} /OUT:{{output}} @$rspfile" |
| outputs = [ |
| # Ignore {{output_extension}} and always use .lib, there's no reason to |
| # allow targets to override this extension on Windows. |
| "{{root_out_dir}}/{{target_output_name}}{{output_extension}}", |
| ] |
| default_output_extension = ".lib" |
| default_output_dir = "{{target_out_dir}}" |
| |
| # inputs_newline works around a fixed per-line buffer size in the linker. |
| rspfile_content = "{{inputs_newline}}" |
| description = "link {{output}}" |
| } |
| |
| tool("solink") { |
| dllname = "{{output_dir}}/{{target_output_name}}{{output_extension}}" |
| libname = "${dllname}.lib" |
| pdbname = "${dllname}.pdb" |
| rspfile = "${dllname}.rsp" |
| |
| command = "$env_setup$bin/link.exe /nologo /IMPLIB:$libname /DLL /OUT:$dllname /PDB:$pdbname @$rspfile" |
| outputs = [ |
| dllname, |
| libname, |
| pdbname, |
| ] |
| default_output_extension = ".dll" |
| default_output_dir = "{{root_out_dir}}" |
| |
| link_output = libname |
| depend_output = libname |
| runtime_outputs = [ |
| dllname, |
| pdbname, |
| ] |
| |
| # I don't quite understand this. Aping Chrome's toolchain/win/BUILD.gn. |
| restat = true |
| |
| # inputs_newline works around a fixed per-line buffer size in the linker. |
| rspfile_content = "{{inputs_newline}} {{libs}} {{solibs}} {{ldflags}}" |
| description = "link {{output}}" |
| } |
| |
| tool("link") { |
| exename = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}" |
| pdbname = "$exename.pdb" |
| rspfile = "$exename.rsp" |
| |
| command = |
| "$env_setup$bin/link.exe /nologo /OUT:$exename /PDB:$pdbname @$rspfile" |
| |
| default_output_extension = ".exe" |
| default_output_dir = "{{root_out_dir}}" |
| outputs = [ |
| exename, |
| ] |
| |
| # inputs_newline works around a fixed per-line buffer size in the linker. |
| rspfile_content = "{{inputs_newline}} {{libs}} {{solibs}} {{ldflags}}" |
| description = "link {{output}}" |
| } |
| |
| tool("stamp") { |
| command = "$stamp {{output}}" |
| description = "stamp {{output}}" |
| } |
| |
| tool("copy") { |
| cp_py = rebase_path("cp.py") |
| command = "$python $cp_py {{source}} {{output}}" |
| description = "copy {{source}} {{output}}" |
| } |
| } |
| |
| toolchain("gcc_like") { |
| lib_switch = "-l" |
| lib_dir_switch = "-L" |
| |
| tool("cc") { |
| depfile = "{{output}}.d" |
| command = "$cc_wrapper $cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}" |
| depsformat = "gcc" |
| outputs = [ |
| "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", |
| ] |
| description = "compile {{source}}" |
| } |
| |
| tool("cxx") { |
| depfile = "{{output}}.d" |
| command = "$cc_wrapper $cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}" |
| depsformat = "gcc" |
| outputs = [ |
| "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", |
| ] |
| description = "compile {{source}}" |
| } |
| |
| tool("objc") { |
| depfile = "{{output}}.d" |
| command = "$cc_wrapper $cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_objc}} -c {{source}} -o {{output}}" |
| depsformat = "gcc" |
| outputs = [ |
| "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", |
| ] |
| description = "compile {{source}}" |
| } |
| |
| tool("objcxx") { |
| depfile = "{{output}}.d" |
| command = "$cc_wrapper $cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} {{cflags_objc}} -c {{source}} -o {{output}}" |
| depsformat = "gcc" |
| outputs = [ |
| "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", |
| ] |
| description = "compile {{source}}" |
| } |
| |
| tool("asm") { |
| depfile = "{{output}}.d" |
| command = "$cc_wrapper $cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{asmflags}} -c {{source}} -o {{output}}" |
| depsformat = "gcc" |
| outputs = [ |
| "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o", |
| ] |
| description = "compile {{source}}" |
| } |
| |
| tool("alink") { |
| rspfile = "{{output}}.rsp" |
| rspfile_content = "{{inputs}}" |
| ar_py = rebase_path("ar.py") |
| command = "$python $ar_py $ar {{output}} $rspfile" |
| outputs = [ |
| "{{root_out_dir}}/{{target_output_name}}{{output_extension}}", |
| ] |
| default_output_extension = ".a" |
| output_prefix = "lib" |
| description = "link {{output}}" |
| } |
| |
| tool("solink") { |
| soname = "{{target_output_name}}{{output_extension}}" |
| |
| rpath = "-Wl,-soname,$soname" |
| if (is_mac) { |
| rpath = "-Wl,-install_name,@rpath/$soname" |
| } |
| |
| command = "$cc_wrapper $cxx -shared {{ldflags}} {{inputs}} {{solibs}} {{libs}} $rpath -o {{output}}" |
| outputs = [ |
| "{{root_out_dir}}/$soname", |
| ] |
| output_prefix = "lib" |
| default_output_extension = ".so" |
| description = "link {{output}}" |
| } |
| |
| tool("link") { |
| command = "$cc_wrapper $cxx {{ldflags}} {{inputs}} {{solibs}} {{libs}} -o {{output}}" |
| outputs = [ |
| "{{root_out_dir}}/{{target_output_name}}{{output_extension}}", |
| ] |
| description = "link {{output}}" |
| } |
| |
| tool("stamp") { |
| command = "$stamp {{output}}" |
| description = "stamp {{output}}" |
| } |
| |
| tool("copy") { |
| cp_py = rebase_path("cp.py") |
| command = "$python $cp_py {{source}} {{output}}" |
| description = "copy {{source}} {{output}}" |
| } |
| } |