def use_system_libcxx_workaround():
host_platform = chpl_platform.get('host')
if host_platform == "darwin":
# If the variable for this is set to something other that '0' or 'no'
# then do the workaround.
# This variable exists to support building the Homebrew formula
# from source because during that build, `brew` is not available.
override_var = overrides.get('CHPL_HOST_USE_SYSTEM_LIBCXX', '')
if override_var != '':
return (override_var != "0" and override_var != "no")
# otherwise, do the workaround if we detect homebrew
homebrew_prefix = chpl_platform.get_homebrew_prefix()
if homebrew_prefix:
return True
return False
def find_system_llvm_config():
llvm_config = overrides.get('CHPL_LLVM_CONFIG', 'none')
if llvm_config != 'none':
return llvm_config
homebrew_prefix = chpl_platform.get_homebrew_prefix()
paths = [ ]
for vers in llvm_versions():
paths.append("llvm-config-" + vers + ".0")
paths.append("llvm-config-" + vers)
# this format used by freebsd
paths.append("llvm-config" + vers)
if homebrew_prefix:
# look for homebrew install of LLVM
paths.append(homebrew_prefix +
"/opt/llvm@" + vers + ".0/bin/llvm-config")
paths.append(homebrew_prefix +
"/opt/llvm@" + vers + "/bin/llvm-config")
# check also unversioned commands
paths.append("llvm-config")
if homebrew_prefix:
paths.append(homebrew_prefix + "/opt/llvm/bin/llvm-config")
by_version = defaultdict(list)
errs = []
for command in paths:
version, config_err = check_llvm_config(command)
if not config_err:
by_version[version].append(command)
else:
errs.append((command, config_err))
for version in llvm_versions():
commands = by_version[version]
if commands:
return commands[0]
return ''
def get_system_link_args(flag):
platform_val = chpl_platform.get(flag)
compiler_val = get(flag)
paths = []
# For PrgEnv compilation with LLVM, gather arguments from PrgEnv driver
if compiler_val == 'llvm' and flag == 'target':
import chpl_llvm
(comp_args, link_args) = chpl_llvm.get_clang_prgenv_args()
paths.extend(link_args)
# FreeBSD uses /usr/local but compilers don't search there by default
if platform_val == 'freebsd':
paths.append('-L/usr/local/lib')
# Add Homebrew lib directory if Homebrew is installed
homebrew_prefix = chpl_platform.get_homebrew_prefix()
if homebrew_prefix:
paths.append('-L' + homebrew_prefix + '/lib')
return paths