91 lines
3.0 KiB
Python
91 lines
3.0 KiB
Python
# Copyright (c) 2009-2021, Google LLC
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# All rights reserved.
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#
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file or at
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# https://developers.google.com/open-source/licenses/bsd
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"""Internal rules for building upb."""
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_DEFAULT_CPPOPTS = []
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_DEFAULT_COPTS = []
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# begin:github_only
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_DEFAULT_CPPOPTS.extend([
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"-Wextra",
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# "-Wshorten-64-to-32", # not in GCC (and my Kokoro images doesn't have Clang)
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"-Wno-unused-parameter",
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"-Wno-long-long",
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])
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_DEFAULT_COPTS.extend([
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"-std=c99",
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"-Wall",
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"-Wstrict-prototypes",
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# GCC (at least) emits spurious warnings for this that cannot be fixed
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# without introducing redundant initialization (with runtime cost):
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635
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#"-Wno-maybe-uninitialized",
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])
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# end:github_only
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UPB_DEFAULT_CPPOPTS = select({
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"//upb:windows": [],
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# begin:google_only
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# # Override default -Oz for release builds on Android.
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# "//upb/bazel:android_opt": _DEFAULT_CPPOPTS + ["-O2"],
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# end:google_only
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"//conditions:default": _DEFAULT_CPPOPTS,
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})
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UPB_DEFAULT_COPTS = select({
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"//upb:windows": [],
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"//upb:fasttable_enabled_setting": ["-std=gnu99", "-DUPB_ENABLE_FASTTABLE"],
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# begin:google_only
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# # Override default -Oz for release builds on Android.
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# "//upb/bazel:android_opt": _DEFAULT_COPTS + ["-O2"],
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# end:google_only
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"//conditions:default": _DEFAULT_COPTS,
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})
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runfiles_init = """\
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# --- begin runfiles.bash initialization v2 ---
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# Copy-pasted from the Bazel Bash runfiles library v2.
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set -uo pipefail; f=bazel_tools/tools/bash/runfiles/runfiles.bash
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source "${RUNFILES_DIR:-/dev/null}/$f" 2>/dev/null || \
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source "$(grep -sm1 "^$f " "${RUNFILES_MANIFEST_FILE:-/dev/null}" | cut -f2- -d' ')" 2>/dev/null || \
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source "$0.runfiles/$f" 2>/dev/null || \
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source "$(grep -sm1 "^$f " "$0.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
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source "$(grep -sm1 "^$f " "$0.exe.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
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{ echo>&2 "ERROR: cannot find $f"; exit 1; }; f=; set -e
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# --- end runfiles.bash initialization v2 ---
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"""
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def _get_real_short_path(file):
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# For some reason, files from other archives have short paths that look like:
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# ../com_google_protobuf/google/protobuf/descriptor.proto
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short_path = file.short_path
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if short_path.startswith("../"):
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second_slash = short_path.index("/", 3)
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short_path = short_path[second_slash + 1:]
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return short_path
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def _get_real_root(file):
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real_short_path = _get_real_short_path(file)
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return file.path[:-len(real_short_path) - 1]
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def _get_real_roots(files):
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roots = {}
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for file in files:
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real_root = _get_real_root(file)
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if real_root:
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roots[real_root] = True
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return roots.keys()
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def make_shell_script(name, contents, out):
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contents = contents.replace("$", "$$")
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native.genrule(
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name = "gen_" + name,
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outs = [out],
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cmd = "(cat <<'HEREDOC'\n%s\nHEREDOC\n) > $@" % contents,
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)
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