402 lines
13 KiB
Text
402 lines
13 KiB
Text
# Copyright (c) 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import("//build/config/compiler/compiler.gni")
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import("//build/config/sanitizers/sanitizers.gni")
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import("//build/config/win/visual_studio_version.gni")
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import("//build/toolchain/toolchain.gni")
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assert(is_win)
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declare_args() {
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# Set this to true to enable static analysis through Visual Studio's
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# /analyze. This dramatically slows compiles and reports thousands of
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# warnings, so normally this is done on a build machine and only the new
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# warnings are examined.
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use_vs_code_analysis = false
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}
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# This is included by reference in the //build/config/compiler config that
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# is applied to all targets. It is here to separate out the logic that is
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# Windows-only.
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config("compiler") {
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if (current_cpu == "x86") {
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asmflags = [
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# When /safeseh is specified, the linker will only produce an image if it
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# can also produce a table of the image's safe exception handlers. This
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# table specifies for the operating system which exception handlers are
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# valid for the image. Note that /SAFESEH isn't accepted on the command
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# line, only /safeseh. This is only accepted by ml.exe, not ml64.exe.
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"/safeseh",
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]
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}
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cflags = [
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"/Gy", # Enable function-level linking.
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"/FS", # Preserve previous PDB behavior.
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"/bigobj", # Some of our files are bigger than the regular limits.
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# Tell the compiler to crash on failures. This is undocumented
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# and unsupported but very handy.
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"/d2FastFail",
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]
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# Force C/C++ mode for the given GN detected file type. This is necessary
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# for precompiled headers where the same source file is compiled in both
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# modes.
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cflags_c = [ "/TC" ]
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cflags_cc = [ "/TP" ]
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if (visual_studio_version == "2015") {
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cflags += [
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# Work around crbug.com/526851, bug in VS 2015 RTM compiler.
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"/Zc:sizedDealloc-",
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# Disable thread-safe statics to avoid overhead and because
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# they are disabled on other platforms. See crbug.com/587210
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# and -fno-threadsafe-statics.
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"/Zc:threadSafeInit-",
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]
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}
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# Building with Clang on Windows is a work in progress and very
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# experimental. See crbug.com/82385.
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# Keep this in sync with the similar block in build/common.gypi
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if (is_clang) {
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cflags += [
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# Many files use intrinsics without including this header.
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# TODO(hans): Fix those files, or move this to sub-GYPs.
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"/FIIntrin.h",
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]
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if (visual_studio_version == "2013") {
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cflags += [ "-fmsc-version=1800" ]
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} else if (visual_studio_version == "2015") {
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cflags += [ "-fmsc-version=1900" ]
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}
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if (current_cpu == "x86") {
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cflags += [ "-m32" ]
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} else {
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cflags += [ "-m64" ]
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}
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if (exec_script("//build/win/use_ansi_codes.py", [], "trim string") ==
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"True") {
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cflags += [
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# cmd.exe doesn't understand ANSI escape codes by default,
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# so only enable them if something emulating them is around.
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"-fansi-escape-codes",
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]
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}
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# Clang runtime libraries, such as the sanitizer runtimes, live here.
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lib_dirs = [ "//third_party/llvm-build/Release+Asserts/lib/clang/$clang_version/lib/windows" ]
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}
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if (is_syzyasan) {
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# SyzyAsan needs /PROFILE turned on to produce appropriate pdbs.
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assert(!is_win_fastlink, "/PROFILE and /DEBUG:FASTLINK are incompatible")
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ldflags = [ "/PROFILE" ]
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}
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# arflags apply only to static_libraries. The normal linker configs are only
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# set for executable and shared library targets so arflags must be set
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# elsewhere. Since this is relatively contained, we just apply them in this
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# more general config and they will only have an effect on static libraries.
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arflags = [
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# "No public symbols found; archive member will be inaccessible." This
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# means that one or more object files in the library can never be
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# pulled in to targets that link to this library. It's just a warning that
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# the source file is a no-op.
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"/ignore:4221",
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]
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}
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config("vs_code_analysis") {
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if (use_vs_code_analysis) {
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# When use_vs_code_analysis is specified add the /analyze switch to enable
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# static analysis. Specifying /analyze:WX- says that /analyze warnings
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# should not be treated as errors.
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cflags = [ "/analyze:WX-" ]
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# Also, disable various noisy warnings that have low value.
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cflags += [
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"/wd6011", # Dereferencing NULL pointer
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# C6285 is ~16% of raw warnings and has low value
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"/wd6285", # non-zero constant || non-zero constant
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"/wd6308", # realloc might return null pointer
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# Possible infinite loop: use of the constant
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# EXCEPTION_CONTINUE_EXECUTION in the exception-filter
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"/wd6312",
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"/wd6322", # Empty _except block
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"/wd6330", # 'char' used instead of 'unsigned char' for istype() call
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# C6334 is ~80% of raw warnings and has low value
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"/wd6334", # sizeof applied to an expression with an operator
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"/wd6326", # Potential comparison of constant with constant
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"/wd6340", # Sign mismatch in function parameter
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"/wd28159", # Consider using 'GetTickCount64'
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"/wd28196", # The precondition is not satisfied
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"/wd28204", # Inconsistent SAL annotations
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"/wd28251", # Inconsistent SAL annotations
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"/wd28252", # Inconsistent SAL annotations
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"/wd28253", # Inconsistent SAL annotations
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"/wd28278", # Function appears with no prototype in scope
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"/wd28285", # syntax error in SAL annotation (in algorithm)
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"/wd28301", # Inconsistent SAL annotations
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"/wd28182", # Dereferencing NULL pointer
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]
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}
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}
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# This is included by reference in the //build/config/compiler:runtime_library
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# config that is applied to all targets. It is here to separate out the logic
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# that is Windows-only. Please see that target for advice on what should go in
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# :runtime_library vs. :compiler.
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config("runtime_library") {
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cflags = []
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# Defines that set up the CRT.
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defines = [
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"__STD_C",
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"_CRT_RAND_S",
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"_CRT_SECURE_NO_DEPRECATE",
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"_HAS_EXCEPTIONS=0",
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"_SCL_SECURE_NO_DEPRECATE",
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]
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# Defines that set up the Windows SDK.
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defines += [
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"_ATL_NO_OPENGL",
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"_WINDOWS",
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"CERT_CHAIN_PARA_HAS_EXTRA_FIELDS",
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"NTDDI_VERSION=0x0A000000",
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"PSAPI_VERSION=1",
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"WIN32",
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"_SECURE_ATL",
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]
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if (!use_vs_code_analysis) {
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# This is required for ATL to use XP-safe versions of its functions.
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# However it is prohibited when using /analyze
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defines += [ "_USING_V110_SDK71_" ]
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}
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if (is_component_build) {
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# Component mode: dynamic CRT. Since the library is shared, it requires
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# exceptions or will give errors about things not matching, so keep
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# exceptions on.
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if (is_debug) {
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cflags += [ "/MDd" ]
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} else {
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cflags += [ "/MD" ]
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}
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} else {
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if (current_os != "win") {
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# WindowsRT: use the dynamic CRT.
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if (is_debug) {
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cflags += [ "/MDd" ]
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} else {
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cflags += [ "/MD" ]
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}
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} else {
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# Desktop Windows: static CRT.
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if (is_debug) {
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cflags += [ "/MTd" ]
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} else {
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cflags += [ "/MT" ]
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}
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}
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}
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}
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# Sets the default Windows build version. This is separated because some
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# targets need to manually override it for their compiles.
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config("winver") {
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defines = [
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"_WIN32_WINNT=0x0A00",
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"WINVER=0x0A00",
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]
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}
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# Linker flags for Windows SDK setup, this is applied only to EXEs and DLLs.
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config("sdk_link") {
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if (current_cpu == "x64") {
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ldflags = [ "/MACHINE:X64" ]
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lib_dirs = [
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"$windows_sdk_path\Lib\winv6.3\um\x64",
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"$visual_studio_path\VC\lib\amd64",
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"$visual_studio_path\VC\atlmfc\lib\amd64",
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]
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} else {
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ldflags = [
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"/MACHINE:X86",
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"/SAFESEH", # Not compatible with x64 so use only for x86.
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"/largeaddressaware",
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]
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lib_dirs = [
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"$windows_sdk_path\Lib\winv6.3\um\x86",
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"$visual_studio_path\VC\lib",
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"$visual_studio_path\VC\atlmfc\lib",
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]
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}
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}
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# This default linker setup is provided separately from the SDK setup so
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# targets who want different library configurations can remove this and specify
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# their own.
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config("common_linker_setup") {
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ldflags = [
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"/FIXED:NO",
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"/ignore:4199",
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"/ignore:4221",
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"/NXCOMPAT",
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# Suggested by Microsoft Devrel to avoid
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# LINK : fatal error LNK1248: image size (80000000)
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# exceeds maximum allowable size (80000000)
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# which started happening more regularly after VS2013 Update 4.
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# Needs to be a bit lower for VS2015, or else errors out.
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"/maxilksize:0x7ff00000",
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# Tell the linker to crash on failures.
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"/fastfail",
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]
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# ASLR makes debugging with windbg difficult because Chrome.exe and
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# Chrome.dll share the same base name. As result, windbg will name the
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# Chrome.dll module like chrome_<base address>, where <base address>
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# typically changes with each launch. This in turn means that breakpoints in
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# Chrome.dll don't stick from one launch to the next. For this reason, we
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# turn ASLR off in debug builds.
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if (is_debug) {
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ldflags += [ "/DYNAMICBASE:NO" ]
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} else {
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ldflags += [ "/DYNAMICBASE" ]
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}
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# Delay loaded DLLs.
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ldflags += [
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"/DELAYLOAD:dbghelp.dll",
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"/DELAYLOAD:dwmapi.dll",
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"/DELAYLOAD:shell32.dll",
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"/DELAYLOAD:uxtheme.dll",
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]
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}
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# Subsystem --------------------------------------------------------------------
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# This is appended to the subsystem to specify a minimum version.
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if (current_cpu == "x64") {
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# The number after the comma is the minimum required OS version.
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# 5.02 = Windows Server 2003.
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subsystem_version_suffix = ",5.02"
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} else {
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# 5.01 = Windows XP.
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subsystem_version_suffix = ",5.01"
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}
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config("console") {
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ldflags = [ "/SUBSYSTEM:CONSOLE$subsystem_version_suffix" ]
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}
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config("windowed") {
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ldflags = [ "/SUBSYSTEM:WINDOWS$subsystem_version_suffix" ]
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}
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# Incremental linking ----------------------------------------------------------
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incremental_linking_on_switch = [ "/INCREMENTAL" ]
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incremental_linking_off_switch = [ "/INCREMENTAL:NO" ]
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# Disable incremental linking for syzyasan
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if (is_debug && !is_syzyasan) {
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default_incremental_linking_switch = incremental_linking_on_switch
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} else {
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default_incremental_linking_switch = incremental_linking_off_switch
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}
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# Applies incremental linking or not depending on the current configuration.
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config("default_incremental_linking") {
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ldflags = default_incremental_linking_switch
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}
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# Explicitly on or off incremental linking
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config("incremental_linking") {
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ldflags = incremental_linking_on_switch
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}
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config("no_incremental_linking") {
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ldflags = incremental_linking_off_switch
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}
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# Some large modules can't handle incremental linking in some situations. This
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# config should be applied to large modules to turn off incremental linking
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# when it won't work.
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config("default_large_module_incremental_linking") {
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if (symbol_level > 0 && (current_cpu == "x86" || !is_component_build)) {
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# When symbols are on, things get so large that the tools fail due to the
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# size of the .ilk files.
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ldflags = incremental_linking_off_switch
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} else {
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# Otherwise just do the default incremental linking for this build type.
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ldflags = default_incremental_linking_switch
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}
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}
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# Character set ----------------------------------------------------------------
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# Not including this config means "ansi" (8-bit system codepage).
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config("unicode") {
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defines = [
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"_UNICODE",
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"UNICODE",
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]
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}
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# Lean and mean ----------------------------------------------------------------
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# Some third party code might not compile with WIN32_LEAN_AND_MEAN so we have
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# to have a separate config for it. Remove this config from your target to
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# get the "bloaty and accomodating" version of windows.h.
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config("lean_and_mean") {
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defines = [ "WIN32_LEAN_AND_MEAN" ]
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}
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# Nominmax --------------------------------------------------------------------
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# Some third party code defines NOMINMAX before including windows.h, which
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# then causes warnings when it's been previously defined on the command line.
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# For such targets, this config can be removed.
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config("nominmax") {
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defines = [ "NOMINMAX" ]
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}
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# Target WinRT ----------------------------------------------------------------
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# When targeting Windows Runtime, certain compiler/linker flags are necessary.
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config("target_winrt") {
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defines = [
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"WINRT",
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"WINAPI_FAMILY=WINAPI_FAMILY_PC_APP",
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]
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cflags_cc = [
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"/ZW",
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"/EHsc",
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]
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}
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# Internal stuff --------------------------------------------------------------
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# Config used by the MIDL template to disable warnings.
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config("midl_warnings") {
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if (is_clang) {
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# MIDL generates code like "#endif !_MIDL_USE_GUIDDEF_".
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cflags = [ "-Wno-extra-tokens" ]
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}
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}
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