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magenta/gnbuild/toolchain/BUILD.gn
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The Fuchsia Authors 53b9e1c8de [magenta] Initial commit
2016-06-15 00:31:24 -07:00

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# Copyright 2016 The Fuchsia Authors
#
# Use of this source code is governed by a MIT-style
# license that can be found in the LICENSE file or at
# https://opensource.org/licenses/MIT
import("//gnbuild/config.gni")
# Defines a toolchain which looks and behaves like gcc.
#
# Parameters
#
# cc
# cxx
# ar
# ld
#
# toolchain_cpu
# What "current_cpu" should be set to when invoking a build
# using this toolchain.
#
# toolchain_os
# What "current_os" should be set to when invoking a
# build using this toolchain.
#
# strip
# Whether to run strip on all shared libraries and executables as
# they're built.
#
# is_clang
# Whether to use clang instead of gcc.
#
# use_gold
# Whether the toolchain uses gold instead of ld.
template("gcc_toolchain") {
toolchain(target_name) {
assert(defined(invoker.cc), "gcc_toolchain() must specify a \"cc\" value")
assert(defined(invoker.cxx), "gcc_toolchain() must specify a \"cxx\" value")
assert(defined(invoker.ar), "gcc_toolchain() must specify a \"ar\" value")
assert(defined(invoker.ld), "gcc_toolchain() must specify a \"ld\" value")
assert(defined(invoker.toolchain_cpu),
"gcc_toolchain() must specify a \"toolchain_cpu\"")
assert(defined(invoker.toolchain_os),
"gcc_toolchain() must specify a \"toolchain_os\"")
forward_variables_from(invoker,
[
"cc",
"cxx",
"ar",
"ld",
])
tool("cc") {
depfile = "{{output}}.d"
command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
depsformat = "gcc"
description = "CC {{output}}"
outputs = [
"{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
]
}
tool("cxx") {
depfile = "{{output}}.d"
command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}"
depsformat = "gcc"
description = "CXX {{output}}"
outputs = [
"{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
]
}
tool("asm") {
depfile = "{{output}}.d"
command = "$cc {{defines}} {{include_dirs}} {{asmflags}} -c {{source}} -o {{output}}"
description = "ASM {{output}}"
outputs = [
"{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
]
}
tool("alink") {
rspfile = "{{output}}.rsp"
command =
"rm -f {{output}} && $ar {{arflags}} rcsD {{output}} @\"$rspfile\""
description = "AR {{output}}"
rspfile_content = "{{inputs}}"
outputs = [
"{{output_dir}}/{{target_output_name}}{{output_extension}}",
]
default_output_dir = "{{target_out_dir}}"
default_output_extension = ".a"
output_prefix = "lib"
}
tool("solink") {
outname = "{{target_output_name}}{{output_extension}}"
outfile = "{{output_dir}}/$outname"
rspfile = "$outfile.rsp"
unstripped_outfile = outfile
if (defined(invoker.strip)) {
unstripped_outfile = "{{root_out_dir}}/lib.unstripped/{{target_output_name}}{{output_extension}}"
}
if (invoker.toolchain_os == "mac") {
command = "$ld -shared {{ldflags}} -o \"$unstripped_outfile\" -Wl,-filelist,\"$rspfile\" {{libs}} {{solibs}}"
rspfile_content = "{{inputs_newline}}"
default_output_extension = ".dylib"
} else {
command = "$ld -shared {{ldflags}} -o \"$unstripped_outfile\" -Wl,-soname=\"$outname\" @\"$rspfile\""
rspfile_content = "-Wl,--whole-archive {{inputs}} {{solibs}} -Wl,--no-whole-archive {{libs}}"
default_output_extension = ".so"
}
if (defined(invoker.strip)) {
command +=
" && ${invoker.strip} -S -o \"$outfile\" \"$unstripped_outfile\""
}
description = "SOLINK $outfile"
default_output_dir = "{{root_out_dir}}"
output_prefix = "lib"
outputs = [
outfile,
]
if (outfile != unstripped_outfile) {
outputs += [ unstripped_outfile ]
}
}
tool("solink_module") {
outname = "{{target_output_name}}{{output_extension}}"
outfile = "{{output_dir}}/$outname"
rspfile = "$outfile.rsp"
if (defined(invoker.strip)) {
unstripped_outfile = "{{root_out_dir}}/lib.unstripped/{{target_output_name}}{{output_extension}}"
} else {
unstripped_outfile = outfile
}
if (invoker.toolchain_os == "mac") {
command = "$ld -shared {{ldflags}} -o \"$unstripped_outfile\" -Wl,-filelist,\"$rspfile\" {{libs}} {{solibs}}"
rspfile_content = "{{inputs_newline}}"
default_output_extension = ".dylib"
} else {
command = "$ld -shared {{ldflags}} -o \"$unstripped_outfile\" -Wl,-soname=\"$outname\" @\"$rspfile\""
rspfile_content = "-Wl,--whole-archive {{inputs}} {{solibs}} -Wl,--no-whole-archive {{libs}}"
default_output_extension = ".so"
}
if (defined(invoker.strip)) {
command +=
" && ${invoker.strip} -S -o \"$outfile\" \"$unstripped_outfile\""
}
description = "SOLINK $outfile"
default_output_dir = "{{root_out_dir}}"
output_prefix = "lib"
outputs = [
outfile,
]
if (outfile != unstripped_outfile) {
outputs += [ unstripped_outfile ]
}
}
tool("link") {
outfile = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
rspfile = "$outfile.rsp"
unstripped_outfile = outfile
if (defined(invoker.strip)) {
unstripped_outfile = "{{root_out_dir}}/exe.unstripped/{{target_output_name}}{{output_extension}}"
}
if (invoker.toolchain_os == "mac") {
command = "$ld {{ldflags}} -o \"$unstripped_outfile\" -Wl,-filelist,\"$rspfile\" {{solibs}} {{libs}}"
} else {
command = "$ld {{ldflags}} -o \"$unstripped_outfile\" -Wl,--start-group @\"$rspfile\" {{solibs}} -Wl,--end-group {{libs}}"
}
if (defined(invoker.strip)) {
command +=
" && ${invoker.strip} -S -o \"$outfile\" \"$unstripped_outfile\""
}
description = "LINK $outfile"
rspfile_content = "{{inputs}}"
default_output_dir = "{{root_out_dir}}"
outputs = [
outfile,
]
if (outfile != unstripped_outfile) {
outputs += [ unstripped_outfile ]
}
}
tool("stamp") {
command = "touch {{output}}"
description = "STAMP {{output}}"
}
tool("copy") {
command = "cp -af {{source}} {{output}}"
description = "COPY {{source}} {{output}}"
}
# When invoking this toolchain not as the default one, these args will be
# passed to the build. They are ignored when this is the default toolchain.
toolchain_args() {
current_cpu = invoker.toolchain_cpu
current_os = invoker.toolchain_os
# These values need to be passed through unchanged.
target_toolchain = target_toolchain
target_os = target_os
target_cpu = target_cpu
if (defined(invoker.is_clang)) {
is_clang = invoker.is_clang
}
if (defined(invoker.use_gold)) {
use_gold = invoker.use_gold
}
}
}
}
template("clang_toolchain") {
assert(defined(invoker.cc), "clang_toolchain() must specify a \"cc\" value")
assert(defined(invoker.cxx), "clang_toolchain() must specify a \"cxx\" value")
assert(defined(invoker.ar), "clang_toolchain() must specify a \"ar\" value")
assert(defined(invoker.ld), "clang_toolchain() must specify a \"ld\" value")
assert(defined(invoker.toolchain_cpu),
"clang_toolchain() must specify a \"toolchain_cpu\"")
assert(defined(invoker.toolchain_os),
"clang_toolchain() must specify a \"toolchain_os\"")
gcc_toolchain(target_name) {
is_clang = true
forward_variables_from(invoker,
[
"cc",
"cxx",
"ld",
"ar",
"strip",
"toolchain_cpu",
"toolchain_os",
"use_gold",
])
}
}
gcc_toolchain("target") {
cc = "${toolprefix}gcc"
cxx = "${toolprefix}g++"
ar = "${toolprefix}ar"
ld = cxx
strip = "${toolprefix}strip"
toolchain_cpu = target_cpu
toolchain_os = target_os
is_clang = false
}
clang_toolchain("clang_target") {
cc = "${toolprefix}clang"
cxx = "${toolprefix}clang++"
ld = cxx
ar = "${toolprefix}ar"
strip = "${toolprefix}strip"
toolchain_cpu = target_cpu
toolchain_os = target_os
}
gcc_toolchain("gcc_host") {
cc = "gcc"
cxx = "g++"
ar = "ar"
ld = cxx
strip = "strip"
toolchain_cpu = host_cpu
toolchain_os = host_os
is_clang = false
}
clang_toolchain("clang_host") {
cc = "clang"
cxx = "clang++"
ld = cxx
ar = "ar"
strip = "strip"
toolchain_cpu = host_cpu
toolchain_os = host_os
}