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# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import re
from spack.package import *
class AppleClang(BundlePackage):
"""Apple's Clang compiler"""
homepage = "https://developer.apple.com/videos/developer-tools/compiler-and-llvm"
has_code = False
maintainers("alalazo")
executables = ["^clang$", r"^clang\+\+$", "^ld.lld$", "^lldb$"]
@classmethod
def determine_version(cls, exe):
version_regex = re.compile(
# Apple's LLVM compiler has its own versions, which are
# different from vanilla LLVM
r"^Apple (?:LLVM|clang) version ([^ )]+)",
# Multi-line, since 'Apple clang' may not be on the first line
# in particular, when run as gcc, it seems to output
# "Configured with: --prefix=..." as the first line
re.M,
)
try:
compiler = Executable(exe)
output = compiler("--version", output=str, error=str)
match = version_regex.search(output)
if match:
return match.group(match.lastindex)
except Exception:
pass
return None
@classmethod
def determine_variants(cls, exes, version_str):
compilers = {}
for exe in exes:
if "clang++" in exe:
compilers["cxx"] = exe
elif "clang" in exe:
compilers["c"] = exe
elif "ld.lld" in exe:
compilers["ld"] = exe
elif "lldb" in exe:
compilers["lldb"] = exe
return "", {"compilers": compilers}
@classmethod
def validate_detected_spec(cls, spec, extra_attributes):
msg = f'the extra attribute "compilers" must be set for the detected spec "{spec}"'
assert "compilers" in extra_attributes, msg
compilers = extra_attributes["compilers"]
for key in ("c", "cxx"):
msg = f"{key} compiler not found for {spec}"
assert key in compilers, msg
@property
def cc(self):
msg = "apple-clang is expected to be an external spec"
assert self.spec.concrete and self.spec.external, msg
return self.spec.extra_attributes["compilers"].get("c", None)
@property
def cxx(self):
msg = "apple-clang is expected to be an external spec"
assert self.spec.concrete and self.spec.external, msg
return self.spec.extra_attributes["compilers"].get("cxx", None)
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