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Filter targets on llvm-config cross

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Wildan M 2026-02-24 07:28:51 +07:00
parent c2dc58336b
commit 99b9b4bd16
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1 changed files with 61 additions and 8 deletions
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69
bin/x86_64-unknown-redox-llvm-config
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@ -1,7 +1,8 @@
#!/usr/bin/env python3
# This script wraps llvm-config that intended for cross compiling to Redox.
# Because we can't run llvm-config compiled to Redox, we wrap it here.
# Because we can't run llvm-config compiled to Redox, we wrap it here
# and filter out architectures that do not match the current $TARGET.
import os
import sys
@ -9,14 +10,47 @@ import subprocess
LLVM_CONFIG = "/bin/llvm-config"
# name of (--targets-built, --components prefix, --libs prefix)
ARCH_MAP = {
"x86_64": ("X86", "x86", "X86"),
"i586": ("X86", "x86", "X86"),
"aarch64": ("AArch64", "aarch64", "AArch64"),
"riscv64gc": ("RISCV", "riscv", "RISCV"),
}
ALL_ARCH_COMPS = ["x86", "aarch64", "riscv"]
ALL_ARCH_LIBS = ["X86", "AArch64", "RISCV"]
def is_unwanted_arch(item, allowed_prefix, all_prefixes, is_lib=False):
matched_arch = None
for arch in all_prefixes:
# libraries e.g., -lLLVMX86CodeGen / libLLVMAArch64Desc.a
if is_lib and f"LLVM{arch}" in item:
matched_arch = arch
break
# components e.g., x86codegen, aarch64desc
elif not is_lib and item.startswith(arch):
matched_arch = arch
break
if matched_arch and matched_arch != allowed_prefix:
return True
return False
def main():
toolchain_path = os.environ.get("COOKBOOK_HOST_SYSROOT")
sysroot_path = os.environ.get("COOKBOOK_SYSROOT")
target_triple = os.environ.get("TARGET")
if not toolchain_path or not sysroot_path:
print(f"Error: COOKBOOK_TOOLCHAIN or COOKBOOK_SYSROOT not set", file=sys.stderr)
if not toolchain_path or not sysroot_path or not target_triple:
print("Error: COOKBOOK_HOST_SYSROOT or COOKBOOK_SYSROOT or TARGET not set", file=sys.stderr)
sys.exit(1)
target_arch = target_triple.split('-')[0] if target_triple else ""
mapped_archs = ARCH_MAP.get(target_arch)
target_built_name, comp_prefix, lib_prefix = mapped_archs
cmd = [toolchain_path + LLVM_CONFIG] + sys.argv[1:]
try:
@ -34,17 +68,36 @@ def main():
if result.returncode != 0:
sys.exit(result.returncode)
output = result.stdout
output = result.stdout.strip()
args_set = set(sys.argv[1:])
if sys.argv[1] in ["--bindir"]:
if "--bindir" in args_set:
output = toolchain_path + "/usr/bin"
else: #if sys.argv[1] in ["--cppflags", "--cxxflags", "--includedir", "--ldflags", "--libdir", "--libfiles"]
elif "--targets-built" in args_set:
output = target_built_name
elif "--components" in args_set:
components = output.split()
filtered = [c for c in components if not is_unwanted_arch(c, comp_prefix, ALL_ARCH_COMPS, is_lib=False)]
output = " ".join(filtered)
elif "--libs" in args_set:
libs = output.split()
filtered = [l for l in libs if not is_unwanted_arch(l, lib_prefix, ALL_ARCH_LIBS, is_lib=True)]
output = " ".join(filtered)
# if "--ldflags" in args_set:
src = toolchain_path.rstrip(os.sep)
dst = sysroot_path.rstrip(os.sep)
output = output.replace(src, dst)
else:
src = toolchain_path.rstrip(os.sep)
dst = sysroot_path.rstrip(os.sep)
output = output.replace(src, dst)
print(output, end='')
print(output + '\n', end='')
if __name__ == "__main__":
main()