skia2/gn/BUILD.gn
Mike Klein 44b36a2104 GN: quiet alink spam on Mac
When building on Mac you see lots of spam about object files with no symbols when linking libskia.a.  This filters them out.

We have to do this in a Python script anyway, so I've consolidated into the existing gn/ar.py.

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4447

Change-Id: I9b18051ba687ec1fcf464a87a8a5929d29c70f24
Reviewed-on: https://skia-review.googlesource.com/4447
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
2016-11-07 14:19:32 +00:00

633 lines
17 KiB
Plaintext

# 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) {
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++"
if (host_os == "win") {
ar = ar + ".exe"
cc = cc + ".exe"
cxx = cxx + ".exe"
}
}
windk = "C:/Program Files (x86)/Microsoft Visual Studio 14.0"
extra_cflags = []
extra_cflags_c = []
extra_cflags_cc = []
extra_ldflags = []
cc_wrapper = ""
}
if (host_os == "win") {
python = "python.bat"
stamp = "cmd.exe /c echo >"
} else {
python = "python"
stamp = "touch"
}
if (!is_win) {
is_clang = exec_script("is_clang.py",
[
cc,
cxx,
],
"value")
}
if (is_ios) {
ios_sysroot = exec_script("find_ios_sysroot.py", [], "trim string")
}
config("default") {
asmflags = []
cflags = []
cflags_c = []
cflags_cc = []
defines = []
ldflags = []
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.
]
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",
# For builds using win_toolchain asset.
"$windk/win_sdk/Include/10.0.10586.0/shared",
"$windk/win_sdk/Include/10.0.10586.0/ucrt",
"$windk/win_sdk/Include/10.0.10586.0/um",
]
lib_dirs = [
# For local builds.
"$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/10.0.10586.0/ucrt/$target_cpu",
"$windk/win_sdk/Lib/10.0.10586.0/um/$target_cpu",
]
if (target_cpu == "x86") {
lib_dirs += [ "$windk/VC/lib" ]
} else {
lib_dirs += [ "$windk/VC/lib/amd64" ]
}
} else {
cflags += [
"-fstrict-aliasing",
"-fPIC",
"-fvisibility=hidden",
"-Werror",
]
cflags_cc += [
"-std=c++11",
"-fno-threadsafe-statics",
"-fvisibility-inlines-hidden",
]
}
if (current_cpu == "arm") {
cflags += [
"-march=armv7-a",
"-mfpu=neon",
"-mthumb",
]
} else if (current_cpu == "mipsel") {
cflags += [
"-march=mips32r2",
"-mdspr2",
]
} else if (current_cpu == "x86" && !is_win) {
asmflags += [ "-m32" ]
cflags += [
"-m32",
"-msse2",
"-mfpmath=sse",
]
ldflags += [ "-m32" ]
}
if (is_android) {
asmflags += [
"--target=$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$ndk/sources/cxx-stl/llvm-libc++/libcxx/include", # Through r12b.
"-isystem$ndk/sources/cxx-stl/llvm-libc++/include", # Since r13.
]
ldflags += [
"--sysroot=$ndk/platforms/$ndk_platform",
"--target=$ndk_target",
"-B$ndk/toolchains/$ndk_gccdir-4.9/prebuilt/$ndk_host/$ndk_target/bin",
"-pie",
]
lib_dirs = [
"$ndk/sources/cxx-stl/llvm-libc++/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/$ndk_platform/usr/lib64" ]
ldflags += [
# Clang will try to link these two files, but not find them. Again, do it manually.
"-nostartfiles",
"$ndk/platforms/$ndk_platform/usr/lib64/crtbegin_dynamic.o",
"$ndk/platforms/$ndk_platform/usr/lib64/crtend_android.o",
]
}
libs = [
# Order matters here! Keep these three in exactly this order.
"c++_static",
"c++abi",
"android_support",
]
if (target_cpu == "arm") {
libs += [ "unwind" ]
}
}
if (is_ios) {
cflags += [
"--sysroot=$ios_sysroot",
"--target=$target_cpu-apple-darwin11",
]
cflags_cc += [ "-stdlib=libc++" ]
ldflags += [
"--sysroot=$ios_sysroot",
"--target=$target_cpu-apple-darwin11",
"-stdlib=libc++",
]
libs = [ "objc" ]
# We used to link all our iOS tools together, so none actually defines main().
# Instead they each define their own entry point, which our iOS mega-app called.
# If we can we'd like to not do that anymore. While we're building both ways, here's
# our clever hack to give each tool back its own main().
cflags += [
"-Ddm_main=main",
"-Dnanobench_main=main",
"-Dtool_main=main",
"-Dtest_main=main",
]
}
if (is_linux) {
libs = [ "pthread" ]
}
if (sanitize != "") {
# You can either pass the sanitizers directly, e.g. "address,undefined",
# or pass one of the couple common aliases used by the bots.
sanitizers = sanitize
if (sanitize == "ASAN") {
sanitizers = "address,bool,function,integer-divide-by-zero,nonnull-attribute,null,object-size,return,returns-nonnull-attribute,shift,signed-integer-overflow,unreachable,vla-bound,vptr"
} else if (sanitize == "TSAN") {
sanitizers = "thread"
} else if (sanitize == "MSAN") {
sanitizers = "memory"
}
cflags += [
"-fsanitize=$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-unused-parameter",
]
cflags_cc += [ "-Wnon-virtual-dtor" ]
if (is_clang) {
cflags += [
"-Weverything",
"-Wno-unknown-warning-option", # Let older Clangs ignore newer Clangs' warnings.
]
if (is_android && target_cpu == "x86") {
# Clang seems to think new/malloc will only be 4-byte aligned on x86 Android.
# 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-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("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",
"-momit-leaf-frame-pointer",
]
}
defines = [ "NDEBUG" ]
}
config("executable") {
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 $windk/win_sdk/bin/SetEnv.cmd /x86 && "
}
tool("cc") {
rspfile = "{{output}}.rsp"
precompiled_header_type = "msvc"
pdbname = "{{target_out_dir}}/{{label_name}}_c.pdb"
# Label names may have spaces so pdbname must be quoted.
command = "$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}}"
}
}