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# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import("//build/config/compiler/compiler.gni")
import("nasm_sources.gni")
configs_to_delete = [ "//build/config/compiler:chromium_code" ]
should_remove_default_deps_for_performance = false
# We'd like to disable sanitizers in all cases, but this is not possible with
# MSAN due to its linkage with instrumented libraries. https://crbug.com/928357
if (!is_msan) {
configs_to_delete += [
# Don't enable sanitizers for build tools. They slow down the overall build.
"//build/config/sanitizers:default_sanitizer_flags",
]
# Without no_default_deps, an implicit dependency on libc++ is added.
# libc++ may have been built referencing the debug CRT, but since we're
# explicitly using the release CRT, this would result in undefined symbol
# errors when linking, so we need to remove the implicit libc++ dependency.
# This is also needed to remove some configurations which make nasm's
# performance slow.
should_remove_default_deps_for_performance = true
}
configs_to_add = [ "//build/config/compiler:no_chromium_code" ]
if (is_debug) {
configs_to_delete += [
# Build with full optimizations even on debug configurations, because some
# yasm build steps (highbd_sad4d_sse2.asm) can take ~33 seconds or more in
# debug component builds on Windows. Enabling compiler optimizations saves
# ~5 seconds.
"//build/config/compiler:default_optimization",
# Don't define _DEBUG. Modest savings, but good for consistency.
"//build/config:debug",
]
configs_to_add += [
"//build/config:release",
"//build/config/compiler:optimize_max",
]
if (is_win) {
# This switches to using the release CRT. For yasm debug component builds
# of highbd_sad4d_sse2.asm on Windows this saved about 15 s.
configs_to_delete += [ "//build/config/win:default_crt" ]
configs_to_add += [ "//build/config/win:release_crt" ]
}
}
config("nasm_config") {
include_dirs = [
".",
"asm",
"disasm",
"include",
"output",
"x86",
]
defines = [ "HAVE_CONFIG_H" ]
if (is_clang) {
cflags = [
# The inline functions in NASM's headers flag this.
"-Wno-unused-function",
# NASM writes nasm_assert(!"some string literal").
"-Wno-string-conversion",
# NASM sometimes redefines macros from its config.h.
"-Wno-macro-redefined",
# NASM sometimes compares enums to unsigned integers.
"-Wno-sign-compare",
# NASM sometimes return null from nonnull.
"-Wno-nonnull",
# NASM sometimes uses uninitialized values.
"-Wno-uninitialized",
# NASM sometimes set variables but doesn't use them.
"-Wno-unused-but-set-variable",
# NASM undefines __STRICT_ANSI__
"-Wno-builtin-macro-redefined",
]
} else if (is_win) {
# Please note that's a slightly different set of warnings.
cflags = [
# NASM sometimes redefines macros from its config.h.
"/wd4005", # macro redefinition
# NASM sometimes compares enums to unsigned integers.
"/wd4018", # sign compare
# char VS const char mismatch.
"/wd4028", # formal parameter 1 different from declaration.
# NASM comment: Uninitialized -> all zero by C spec
# Or sometimes one const struct is forward declared for no reason.
"/wd4132", # const object should be initialized
# NASM uses "(-x) & 0xFF" pattern to negate byte.
"/wd4146", # unary minus operator applied to unsigned type
]
}
}
if (current_toolchain == host_toolchain) {
executable("nasm") {
sources = nasmlib_sources + nasm_sources
sources += [
"config/config-linux.h",
"config/config-mac.h",
"config/config.h",
"config/msvc.h",
"config/unconfig.h",
]
configs -= configs_to_delete
configs += configs_to_add
configs += [ ":nasm_config" ]
no_default_deps = should_remove_default_deps_for_performance
}
}
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