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# Copyright 2021 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This file is based on gcc_toolchain.gni and customized for z/OS.
import("//build/toolchain/gcc_toolchain.gni")
toolchain("s390x") {
cc = "ibm-clang"
cxx = "ibm-clang++"
asm = "ibm-clang"
ar = "ar"
ld = cxx
toolchain_args = {
current_cpu = "s390x"
current_os = "zos"
}
rebuild_string = ""
default_shlib_extension = ".so"
default_shlib_subdir = ""
extra_cflags = ""
extra_cppflags = ""
extra_cxxflags = ""
extra_asmflags = ""
extra_ldflags = ""
# These library switches can apply to all tools below.
lib_switch = "-l"
lib_dir_switch = "-L"
# Object files go in this directory.
object_subdir = "{{target_out_dir}}/{{label_name}}"
tool("cc") {
depfile = "{{output}}.d"
command = "$cc -MMD -MF $depfile ${rebuild_string}{{defines}} {{include_dirs}} {{cflags}} {{cflags_c}}${extra_cflags} -c {{source}} -o {{output}}"
depsformat = "gcc"
description = "CC {{output}}"
outputs = [ "$object_subdir/{{source_name_part}}.o" ]
}
tool("cxx") {
depfile = "{{output}}.d"
command = "$cxx -MMD -MF $depfile ${rebuild_string}{{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}}${extra_cppflags}${extra_cxxflags} -c {{source}} -o {{output}}"
depsformat = "gcc"
description = "CXX {{output}}"
outputs = [ "$object_subdir/{{source_name_part}}.o" ]
}
tool("asm") {
# Just use the C compiler to compile assembly.
depfile = "{{output}}.d"
command = "$asm ${rebuild_string} {{asmflags}}${extra_asmflags} -c {{source}} -o {{output}}"
depsformat = "gcc"
description = "ASM {{output}}"
outputs = [ "$object_subdir/{{source_name_part}}.o" ]
}
tool("alink") {
command = "$ar {{arflags}} -r -c -s {{output}} {{inputs}}"
# Remove the output file first so that ar doesn't try to modify the
# existing file.
command = "rm -f {{output}} && $command"
# Almost all targets build with //build/config/compiler:thin_archive which
# adds -T to arflags.
description = "AR {{output}}"
outputs = [ "{{output_dir}}/{{target_output_name}}{{output_extension}}" ]
# Shared libraries go in the target out directory by default so we can
# generate different targets with the same name and not have them collide.
default_output_dir = "{{target_out_dir}}"
default_output_extension = ".a"
output_prefix = "lib"
}
tool("solink") {
soname = "{{target_output_name}}{{output_extension}}" # e.g. "libfoo.so".
sofile = "{{output_dir}}/$soname" # Possibly including toolchain dir.
xfile = "{{output_dir}}/{{target_output_name}}.x"
rspfile = sofile + ".rsp"
# These variables are not built into GN but are helpers that
# implement (1) linking to produce a .so, (2) extracting the symbols
# from that file (3) if the extracted list differs from the existing
# .TOC file, overwrite it, otherwise, don't change it.
link_command = "$ld -Wl,-x${xfile} {{ldflags}}${extra_ldflags} -o \"$sofile\" `cat $rspfile`"
solink_wrapper =
rebase_path("//build/toolchain/gcc_link_wrapper.py", root_build_dir)
command =
"$python_path \"$solink_wrapper\" --output=\"$sofile\" -- $link_command"
rspfile_content = "{{inputs}} {{solibs}} {{libs}}"
description = "SOLINK $sofile"
# Use this for {{output_extension}} expansions unless a target manually
# overrides it (in which case {{output_extension}} will be what the target
# specifies).
default_output_extension = default_shlib_extension
default_output_dir = "{{root_out_dir}}${default_shlib_subdir}"
output_prefix = "lib"
# Since the above commands only updates the .TOC file when it changes, ask
# Ninja to check if the timestamp actually changed to know if downstream
# dependencies should be recompiled.
restat = true
# Tell GN about the output files. It will link to the sofile but use the
# tocfile for dependency management.
outputs = [ xfile ]
outputs += [ sofile ]
link_output = xfile
depend_output = xfile
}
tool("solink_module") {
soname = "{{target_output_name}}{{output_extension}}" # e.g. "libfoo.so".
sofile = "{{output_dir}}/$soname"
xfile = "{{output_dir}}/{{target_output_name}}.x"
rspfile = sofile + ".rsp"
command = "$ld {{ldflags}}${extra_ldflags} -o \"$sofile\" `cat $rspfile`"
rspfile_content = "{{inputs}} {{solibs}} {{libs}}"
description = "SOLINK_MODULE $sofile"
default_output_dir = "{{root_out_dir}}${default_shlib_subdir}"
output_prefix = "lib"
outputs = [ xfile ]
outputs += [ sofile ]
}
tool("link") {
exename = "{{target_output_name}}{{output_extension}}"
outfile = "{{output_dir}}/$exename"
rspfile = "$outfile.rsp"
default_output_dir = "{{root_out_dir}}"
link_command = "$ld {{ldflags}}${extra_ldflags} -o \"$outfile\" `cat $rspfile` {{solibs}} {{libs}}"
link_wrapper =
rebase_path("//build/toolchain/gcc_link_wrapper.py", root_build_dir)
command =
"$python_path \"$link_wrapper\" --output=\"$outfile\" -- $link_command"
description = "LINK $outfile"
rspfile_content = "{{inputs}}"
outputs = [ outfile ]
}
# These two are really entirely generic, but have to be repeated in
# each toolchain because GN doesn't allow a template to be used here.
# See //build/toolchain/toolchain.gni for details.
tool("stamp") {
command = stamp_command
description = stamp_description
}
tool("copy") {
command = copy_command
description = copy_description
}
}
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