toolchain.py
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import os
import itertools
import platform
import subprocess
import sys
import lit.util
from lit.llvm import llvm_config
from lit.llvm.subst import FindTool
from lit.llvm.subst import ToolSubst
def use_lldb_substitutions(config):
# Set up substitutions for primary tools. These tools must come from config.lldb_tools_dir
# which is basically the build output directory. We do not want to find these in path or
# anywhere else, since they are specifically the programs which are actually being tested.
dsname = 'debugserver' if platform.system() in ['Darwin'] else 'lldb-server'
dsargs = [] if platform.system() in ['Darwin'] else ['gdbserver']
build_script = os.path.dirname(__file__)
build_script = os.path.join(build_script, 'build.py')
build_script_args = [build_script,
'--compiler=any', # Default to best compiler
'--arch=' + str(config.lldb_bitness)]
if config.lldb_lit_tools_dir:
build_script_args.append('--tools-dir={0}'.format(config.lldb_lit_tools_dir))
if config.lldb_tools_dir:
build_script_args.append('--tools-dir={0}'.format(config.lldb_tools_dir))
if config.llvm_libs_dir:
build_script_args.append('--libs-dir={0}'.format(config.llvm_libs_dir))
lldb_init = os.path.join(config.test_exec_root, 'Shell', 'lit-lldb-init')
primary_tools = [
ToolSubst('%lldb',
command=FindTool('lldb'),
extra_args=['--no-lldbinit', '-S', lldb_init]),
ToolSubst('%lldb-init',
command=FindTool('lldb'),
extra_args=['-S', lldb_init]),
ToolSubst('%debugserver',
command=FindTool(dsname),
extra_args=dsargs,
unresolved='ignore'),
ToolSubst('%platformserver',
command=FindTool('lldb-server'),
extra_args=['platform'],
unresolved='ignore'),
'lldb-test',
'lldb-instr',
ToolSubst('%build',
command="'" + sys.executable + "'",
extra_args=build_script_args)
]
llvm_config.add_tool_substitutions(primary_tools,
[config.lldb_tools_dir])
def _use_msvc_substitutions(config):
# If running from a Visual Studio Command prompt (e.g. vcvars), this will
# detect the include and lib paths, and find cl.exe and link.exe and create
# substitutions for each of them that explicitly specify /I and /L paths
cl = lit.util.which('cl')
link = lit.util.which('link')
if not cl or not link:
return
cl = '"' + cl + '"'
link = '"' + link + '"'
includes = os.getenv('INCLUDE', '').split(';')
libs = os.getenv('LIB', '').split(';')
config.available_features.add('msvc')
compiler_flags = ['"/I{}"'.format(x) for x in includes if os.path.exists(x)]
linker_flags = ['"/LIBPATH:{}"'.format(x) for x in libs if os.path.exists(x)]
tools = [
ToolSubst('%msvc_cl', command=cl, extra_args=compiler_flags),
ToolSubst('%msvc_link', command=link, extra_args=linker_flags)]
llvm_config.add_tool_substitutions(tools)
return
def use_support_substitutions(config):
# Set up substitutions for support tools. These tools can be overridden at the CMake
# level (by specifying -DLLDB_LIT_TOOLS_DIR), installed, or as a last resort, we can use
# the just-built version.
host_flags = ['--target=' + config.host_triple]
if platform.system() in ['Darwin']:
try:
out = subprocess.check_output(['xcrun', '--show-sdk-path']).strip()
res = 0
except OSError:
res = -1
if res == 0 and out:
sdk_path = lit.util.to_string(out)
llvm_config.lit_config.note('using SDKROOT: %r' % sdk_path)
host_flags += ['-isysroot', sdk_path]
elif platform.system() in ['NetBSD', 'OpenBSD', 'Linux']:
host_flags += ['-pthread']
if sys.platform.startswith('netbsd'):
# needed e.g. to use freshly built libc++
host_flags += ['-L' + config.llvm_libs_dir,
'-Wl,-rpath,' + config.llvm_libs_dir]
# The clang module cache is used for building inferiors.
host_flags += ['-fmodules-cache-path={}'.format(config.clang_module_cache)]
host_flags = ' '.join(host_flags)
config.substitutions.append(('%clang_host', '%clang ' + host_flags))
config.substitutions.append(('%clangxx_host', '%clangxx ' + host_flags))
config.substitutions.append(('%clang_cl_host', '%clang_cl --target='+config.host_triple))
additional_tool_dirs=[]
if config.lldb_lit_tools_dir:
additional_tool_dirs.append(config.lldb_lit_tools_dir)
llvm_config.use_clang(additional_flags=['--target=specify-a-target-or-use-a-_host-substitution'],
additional_tool_dirs=additional_tool_dirs,
required=True)
if sys.platform == 'win32':
_use_msvc_substitutions(config)
have_lld = llvm_config.use_lld(additional_tool_dirs=additional_tool_dirs,
required=False)
if have_lld:
config.available_features.add('lld')
support_tools = ['yaml2obj', 'obj2yaml', 'llvm-pdbutil',
'llvm-mc', 'llvm-readobj', 'llvm-objdump',
'llvm-objcopy', 'lli']
additional_tool_dirs += [config.lldb_tools_dir, config.llvm_tools_dir]
llvm_config.add_tool_substitutions(support_tools, additional_tool_dirs)