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gn build: Create a template for unix toolchains. 

Also change the toolchain description to use current_os instead of
host_os so that the template can be used for cross builds, and add
a current_os to the win toolchain to match the unix toolchain.

Differential Revision: https://reviews.llvm.org/D56576

llvm-svn: 350977
This commit is contained in:
Peter Collingbourne 2019-01-11 22:57:57 +00:00
parent 7d7e3256cd
commit ad7f1d605c
1 changed files with 114 additions and 98 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
llvm/utils/gn/build/toolchain/BUILD.gn
View File

@ -9,20 +9,9 @@ declare_args() {
}
}
toolchain("unix") {
cc = "cc"
cxx = "c++"
if (clang_base_path != "") {
cc = "$clang_base_path/bin/clang"
cxx = "$clang_base_path/bin/clang++"
}
ld = cxx # Don't use goma wrapper for linking.
if (use_goma) {
cc = "$goma_dir/gomacc $cc"
cxx = "$goma_dir/gomacc $cxx"
}
template("unix_toolchain") {
toolchain(target_name) {
forward_variables_from(invoker, "*")
tool("cc") {
depfile = "{{output}}.d"
@ -45,12 +34,12 @@ toolchain("unix") {
}
tool("alink") {
if (host_os == "mac") {
if (current_os == "mac") {
command = "libtool -static -no_warning_for_no_symbols {{arflags}} -o {{output}} {{inputs}}"
} else {
# Remove the output file first so that ar doesn't try to modify the
# existing file.
command = "rm -f {{output}} && ar rcsDT {{arflags}} {{output}} {{inputs}}"
command = "rm -f {{output}} && $ar rcsDT {{arflags}} {{output}} {{inputs}}"
}
description = "AR {{output}}"
outputs = [
@ -62,7 +51,7 @@ toolchain("unix") {
tool("solink") {
outfile = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
if (host_os == "mac") {
if (current_os == "mac") {
command = "$ld -shared {{ldflags}} -o $outfile {{libs}} {{inputs}}"
default_output_extension = ".dylib"
} else {
@ -81,7 +70,7 @@ toolchain("unix") {
tool("solink_module") {
outfile = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
if (host_os == "mac") {
if (current_os == "mac") {
command = "$ld -shared {{ldflags}} -Wl,-flat_namespace -Wl,-undefined,suppress -o $outfile {{libs}} {{inputs}}"
default_output_extension = ".dylib"
} else {
@ -98,7 +87,7 @@ toolchain("unix") {
tool("link") {
outfile = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
if (host_os == "mac") {
if (current_os == "mac") {
command = "$ld {{ldflags}} -o $outfile {{libs}} {{inputs}}"
} else {
command = "$ld {{ldflags}} -o $outfile {{libs}} -Wl,--start-group {{inputs}} -Wl,--end-group"
@ -124,6 +113,29 @@ toolchain("unix") {
description = "STAMP {{output}}"
}
}
}
unix_toolchain("unix") {
cc = "cc"
cxx = "c++"
if (clang_base_path != "") {
cc = "$clang_base_path/bin/clang"
cxx = "$clang_base_path/bin/clang++"
}
ld = cxx # Don't use goma wrapper for linking.
if (use_goma) {
cc = "$goma_dir/gomacc $cc"
cxx = "$goma_dir/gomacc $cxx"
}
ar = "ar"
toolchain_args = {
current_os = host_os
}
}
toolchain("win") {
cl = "cl"
@ -228,4 +240,8 @@ toolchain("win") {
command = "cmd /c type nul > {{output}}"
description = "STAMP {{output}}"
}
toolchain_args = {
current_os = "win"
}
}