motiejus/hermetic_cc_toolchain
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remove support for glibc autodetection; this is a hermetic toolchain

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Motiejus Jakštys 2022-04-18 11:44:51 +03:00
parent 0c02a827ae
commit efca6e6428
1 changed files with 5 additions and 17 deletions
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22
toolchain/private/defs.bzl
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@ -35,7 +35,7 @@ def target_structs():
for zigcpu, gocpu in (("x86_64", "amd64"), ("aarch64", "arm64")):
ret.append(_target_darwin(gocpu, zigcpu))
ret.append(_target_linux_musl(gocpu, zigcpu))
for glibc in [""] + _GLIBCS:
for glibc in _GLIBCS:
ret.append(_target_linux_gnu(gocpu, zigcpu, glibc))
return ret
@ -63,24 +63,12 @@ def _target_darwin(gocpu, zigcpu):
tool_paths = {"ld": "ld64.lld"},
)
def _target_linux_gnu(gocpu, zigcpu, glibc_version = ""):
glibc_suffix = "gnu"
if glibc_version != "":
glibc_suffix = "gnu.{}".format(glibc_version)
def _target_linux_gnu(gocpu, zigcpu, glibc_version):
glibc_suffix = "gnu.{}".format(glibc_version)
# https://github.com/ziglang/zig/issues/5882#issuecomment-888250676
# fcntl_hack is only required for glibc 2.27 or less. We assume that
# glibc_version == "" (autodetect) is running a recent glibc version, thus
# adding this hack only when glibc is explicitly 2.27 or lower.
fcntl_hack = False
if glibc_version == "":
# zig doesn't reliably detect the glibc version, so
# often falls back to 2.17; the hack should be included.
# https://github.com/ziglang/zig/issues/6469
fcntl_hack = True
else:
# hack is required for 2.27 or less.
fcntl_hack = glibc_version < "2.28"
# fcntl_hack is only required for glibc 2.27 or less.
fcntl_hack = glibc_version < "2.28"
return struct(
gotarget = "linux_{}_{}".format(gocpu, glibc_suffix),