skia2/gn/toolchain/BUILD.gn
Mike Klein c466945ddd tweak ar/libtool setup
This is what I was getting at on the comments in PS 5.

Change-Id: I5435860ebea9ed01217d7acb378e1fadce19b107
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/250776
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2019-10-25 18:21:22 +00:00

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12 KiB
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declare_args() {
host_ar = ar
host_cc = cc
host_cxx = cxx
if (is_android) {
_prefix = "$ndk/toolchains/llvm/prebuilt/$ndk_host/bin"
if (host_os == "win") {
target_ar = "$_prefix/llvm-ar.exe"
target_cc = "$_prefix/clang.exe --target=$ndk_target$ndk_api -fno-addrsig"
target_cxx =
"$_prefix/clang++.exe --target=$ndk_target$ndk_api -fno-addrsig"
} else {
target_ar = "$_prefix/llvm-ar"
target_cc = "$_prefix/$ndk_target$ndk_api-clang"
target_cxx = "$_prefix/$ndk_target$ndk_api-clang++"
}
} else {
target_ar = ar
target_cc = cc
target_cxx = cxx
}
cc_wrapper = ""
# dsymutil seems to kill the machine when too many processes are run in
# parallel, so we need to use a pool to limit the concurrency when passing
# large -j to Ninja (e.g. Goma build). Unfortunately this is also one of the
# slowest steps in a build, so we don't want to limit too much. Use the number
# of CPUs as a default.
dlsymutil_pool_depth = exec_script("num_cpus.py", [], "value")
}
if (host_os == "win") {
stamp = "cmd.exe /c echo >"
} else {
stamp = "touch"
}
if (current_toolchain == default_toolchain) {
pool("dsymutil_pool") {
depth = dlsymutil_pool_depth
}
}
toolchain("msvc") {
lib_dir_switch = "/LIBPATH:"
bin = "$win_vc/Tools/MSVC/$win_toolchain_version/bin/HostX64/$target_cpu"
env_setup = ""
if (target_cpu == "x86") {
# Toolchain asset includes a script that configures for x86 building.
# We don't support x86 builds with local MSVC installations.
env_setup = "cmd /c $win_sdk/bin/SetEnv.cmd /x86 && "
} else if (target_cpu == "arm64") {
# ARM64 compiler is incomplete - it relies on DLLs located in the host toolchain directory.
env_setup = "cmd /C set \"PATH=%PATH%;$win_vc\\Tools\\MSVC\\$win_toolchain_version\\bin\\HostX64\\x64\" && "
}
cl_m32_flag = ""
if (clang_win != "") {
if (target_cpu == "x86") {
# cl.exe knows implicitly by the choice of executable that it's targeting
# x86, but clang-cl.exe needs to be told when targeting non-host
# platforms. (All our builders are x86-64, so x86 is always non-host.)
cl_m32_flag = "-m32"
}
if (host_os == "win") {
cl = "\"$clang_win/bin/clang-cl.exe\""
lib = "\"$clang_win/bin/lld-link.exe\" /lib"
link = "\"$clang_win/bin/lld-link.exe\""
} else {
cl = "\"$clang_win/bin/clang-cl\""
lib = "\"$clang_win/bin/lld-link\" /lib"
link = "\"$clang_win/bin/lld-link\""
}
} else {
cl = "\"$bin/cl.exe\""
lib = "\"$bin/lib.exe\""
link = "\"$bin/link.exe\""
}
tool("asm") {
_ml = "ml"
if (target_cpu == "x64") {
_ml += "64"
}
command = "$env_setup \"$bin/$_ml.exe\" {{asmflags}} /nologo /c /Fo {{output}} {{source}}"
outputs = [
"{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.obj",
]
description = "assemble {{source}}"
}
tool("cc") {
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 $cc_wrapper $cl /nologo /showIncludes /FC {{defines}} {{include_dirs}} {{cflags}} $cl_m32_flag {{cflags_c}} /c {{source}} /Fo{{output}} /Fd\"$pdbname\""
depsformat = "msvc"
outputs = [
"{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.obj",
]
description = "compile {{source}}"
}
tool("cxx") {
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 $cc_wrapper $cl /nologo /showIncludes /FC {{defines}} {{include_dirs}} {{cflags}} $cl_m32_flag {{cflags_cc}} /c {{source}} /Fo{{output}} /Fd\"$pdbname\""
depsformat = "msvc"
outputs = [
"{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.obj",
]
description = "compile {{source}}"
}
tool("alink") {
rspfile = "{{output}}.rsp"
command = "$env_setup $lib /nologo /ignore:4221 {{arflags}} /OUT:{{output}} @$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 $link /nologo /IMPLIB:$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 $link /nologo /OUT:$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 $cp_py {{source}} {{output}}"
description = "copy {{source}} {{output}}"
}
}
template("gcc_like_toolchain") {
toolchain(target_name) {
ar = invoker.ar
cc = invoker.cc
cxx = invoker.cxx
lib_switch = "-l"
lib_dir_switch = "-L"
tool("cc") {
depfile = "{{output}}.d"
command = "$cc_wrapper $cc -MD -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 -MD -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 -MD -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 -MD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} {{cflags_objcc}} -c {{source}} -o {{output}}"
depsformat = "gcc"
outputs = [
"{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
]
description = "compile {{source}}"
}
tool("asm") {
depfile = "{{output}}.d"
command = "$cc_wrapper $cc -MD -MF $depfile {{defines}} {{include_dirs}} {{asmflags}} -c {{source}} -o {{output}}"
depsformat = "gcc"
outputs = [
"{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
]
description = "assemble {{source}}"
}
if (is_mac || is_ios) {
not_needed([ "ar" ]) # We use libtool instead.
}
tool("alink") {
if (is_mac || is_ios) {
command = "libtool -static -o {{output}} -no_warning_for_no_symbols {{inputs}}"
} else {
rspfile = "{{output}}.rsp"
rspfile_content = "{{inputs}}"
command = "$ar rcs {{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 || is_ios) {
rpath = "-Wl,-install_name,@rpath/$soname"
}
rspfile = "{{output}}.rsp"
rspfile_content = "{{inputs}}"
# --start-group/--end-group let us link multiple .a {{inputs}}
# without worrying about their relative order on the link line.
#
# This is mostly important for traditional linkers like GNU ld and Gold.
# The Mac/iOS linker neither needs nor accepts these flags.
# LLD doesn't need these flags, but accepts and ignores them.
_start_group = "-Wl,--start-group"
_end_group = "-Wl,--end-group"
if (is_mac || is_ios) {
_start_group = ""
_end_group = ""
}
command = "$cxx -shared {{ldflags}} $_start_group @$rspfile {{solibs}} $_end_group {{libs}} $rpath -o {{output}}"
outputs = [
"{{root_out_dir}}/$soname",
]
output_prefix = "lib"
default_output_extension = ".so"
description = "link {{output}}"
}
tool("link") {
exe_name = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}"
rspfile = "$exe_name.rsp"
rspfile_content = "{{inputs}}"
# --start-group/--end-group let us link multiple .a {{inputs}}
# without worrying about their relative order on the link line.
#
# This is mostly important for traditional linkers like GNU ld and Gold.
# The Mac/iOS linker neither needs nor accepts these flags.
# LLD doesn't need these flags, but accepts and ignores them.
_start_group = "-Wl,--start-group"
_end_group = "-Wl,--end-group"
if (is_mac || is_ios) {
_start_group = ""
_end_group = ""
}
command = "$cxx {{ldflags}} $_start_group @$rspfile {{solibs}} $_end_group {{libs}} -o $exe_name"
outputs = [
"$exe_name",
]
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}}"
}
tool("copy_bundle_data") {
cp_py = rebase_path("../cp.py")
command = "python $cp_py {{source}} {{output}}"
description = "copy_bundle_data {{source}} {{output}}"
}
# We don't currently have any xcasset files so make this a NOP
tool("compile_xcassets") {
command = "true"
description = "compile_xcassets {{output}}"
}
toolchain_args = {
current_cpu = invoker.cpu
current_os = invoker.os
}
}
}
gcc_like_toolchain("gcc_like") {
cpu = current_cpu
os = current_os
ar = target_ar
cc = target_cc
cxx = target_cxx
}
gcc_like_toolchain("gcc_like_host") {
cpu = host_cpu
os = host_os
ar = host_ar
cc = host_cc
cxx = host_cxx
}