1# Copyright (c) 2009-2021, Google LLC 2# All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are met: 6# * Redistributions of source code must retain the above copyright 7# notice, this list of conditions and the following disclaimer. 8# * Redistributions in binary form must reproduce the above copyright 9# notice, this list of conditions and the following disclaimer in the 10# documentation and/or other materials provided with the distribution. 11# * Neither the name of Google LLC nor the 12# names of its contributors may be used to endorse or promote products 13# derived from this software without specific prior written permission. 14# 15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18# DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY 19# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 22# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 24# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 26"""Internal rules for building upb.""" 27 28_DEFAULT_CPPOPTS = [] 29_DEFAULT_COPTS = [] 30 31# begin:github_only 32_DEFAULT_CPPOPTS.extend([ 33 "-Wextra", 34 # "-Wshorten-64-to-32", # not in GCC (and my Kokoro images doesn't have Clang) 35 "-Werror", 36 "-Wno-unused-parameter", 37 "-Wno-long-long", 38]) 39_DEFAULT_COPTS.extend([ 40 "-std=c99", 41 "-Wall", 42 "-Wstrict-prototypes", 43 # GCC (at least) emits spurious warnings for this that cannot be fixed 44 # without introducing redundant initialization (with runtime cost): 45 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635 46 #"-Wno-maybe-uninitialized", 47]) 48# end:github_only 49 50UPB_DEFAULT_CPPOPTS = select({ 51 "//:windows": [], 52 "//conditions:default": _DEFAULT_CPPOPTS, 53}) 54 55UPB_DEFAULT_COPTS = select({ 56 "//:windows": [], 57 "//:fasttable_enabled_setting": ["-std=gnu99", "-DUPB_ENABLE_FASTTABLE"], 58 "//conditions:default": _DEFAULT_COPTS, 59}) 60 61runfiles_init = """\ 62# --- begin runfiles.bash initialization v2 --- 63# Copy-pasted from the Bazel Bash runfiles library v2. 64set -uo pipefail; f=bazel_tools/tools/bash/runfiles/runfiles.bash 65source "${RUNFILES_DIR:-/dev/null}/$f" 2>/dev/null || \ 66 source "$(grep -sm1 "^$f " "${RUNFILES_MANIFEST_FILE:-/dev/null}" | cut -f2- -d' ')" 2>/dev/null || \ 67 source "$0.runfiles/$f" 2>/dev/null || \ 68 source "$(grep -sm1 "^$f " "$0.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \ 69 source "$(grep -sm1 "^$f " "$0.exe.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \ 70 { echo>&2 "ERROR: cannot find $f"; exit 1; }; f=; set -e 71# --- end runfiles.bash initialization v2 --- 72""" 73 74def _get_real_short_path(file): 75 # For some reason, files from other archives have short paths that look like: 76 # ../com_google_protobuf/google/protobuf/descriptor.proto 77 short_path = file.short_path 78 if short_path.startswith("../"): 79 second_slash = short_path.index("/", 3) 80 short_path = short_path[second_slash + 1:] 81 return short_path 82 83def _get_real_root(file): 84 real_short_path = _get_real_short_path(file) 85 return file.path[:-len(real_short_path) - 1] 86 87def _get_real_roots(files): 88 roots = {} 89 for file in files: 90 real_root = _get_real_root(file) 91 if real_root: 92 roots[real_root] = True 93 return roots.keys() 94 95def make_shell_script(name, contents, out): 96 contents = contents.replace("$", "$$") 97 native.genrule( 98 name = "gen_" + name, 99 outs = [out], 100 cmd = "(cat <<'HEREDOC'\n%s\nHEREDOC\n) > $@" % contents, 101 ) 102