94 lines
4.0 KiB
Python
94 lines
4.0 KiB
Python
"""This file contains compiler flags that is specific to C++ compiling and linking."""
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load(
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"//bazel/toolchains/cc/mongo_linux:mongo_compiler_flags.bzl",
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"MONGO_LINUX_CC_COPTS",
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"MONGO_LINUX_CC_LINKFLAGS",
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)
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load(
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"//bazel/toolchains/cc/mongo_windows:mongo_compiler_flags.bzl",
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"MONGO_WIN_CC_COPTS",
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"MONGO_WIN_CC_LINKFLAGS",
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"WINDOWS_MULTITHREAD_RUNTIME_COPTS",
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)
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# Only visible in the build system.
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visibility([
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"//bazel",
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"//src/mongo/util",
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])
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# Used as both link flags and copts
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# Suppress the function sanitizer check for third party libraries, because:
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#
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# - mongod (a C++ binary) links in WiredTiger (a C library)
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# - If/when mongod--built under ubsan--fails, the sanitizer will by
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# default analyze the failed execution for undefined behavior related to
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# function pointer usage. See:
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# https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html#available-checks
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# - When this happens, the sanitizer will attempt to dynamically load to perform
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# the analysis.
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# - However, since WT was built as a C library, is not linked with the function
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# sanitizer library symbols despite its C++ dependencies referencing them.
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# - This will cause the sanitizer itself to fail, resulting in debug information
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# being unavailable.
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# - So by suppressing the function ubsan check, we won't reference symbols
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# defined in the unavailable ubsan function sanitier library and will get
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# useful debugging information.
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UBSAN_OPTS_THIRD_PARTY = select({
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"//bazel/config:sanitize_undefined_dynamic_link_settings": [
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"-fno-sanitize=function",
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],
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"//conditions:default": [],
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})
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def force_includes_copt(package_name, name):
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if package_name.startswith("src/mongo"):
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basic_h = "mongo/platform/basic.h"
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return select({
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"@platforms//os:windows": ["/FI" + basic_h],
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"//conditions:default": ["-include", basic_h],
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})
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if name in ["scripting", "scripting_mozjs_test", "encrypted_dbclient"]:
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return select({
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"//bazel/config:linux_aarch64": ["-include", "third_party/mozjs/platform/aarch64/linux/build/js-config.h"],
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"//bazel/config:linux_ppc64le": ["-include", "third_party/mozjs/platform/ppc64le/linux/build/js-config.h"],
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"//bazel/config:linux_s390x": ["-include", "third_party/mozjs/platform/s390x/linux/build/js-config.h"],
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"//bazel/config:linux_x86_64": ["-include", "third_party/mozjs/platform/x86_64/linux/build/js-config.h"],
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"//bazel/config:macos_aarch64": ["-include", "third_party/mozjs/platform/aarch64/macOS/build/js-config.h"],
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"//bazel/config:macos_x86_64": ["-include", "third_party/mozjs/platform/x86_64/macOS/build/js-config.h"],
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"//bazel/config:windows_x86_64": ["/FI" + "third_party/mozjs/platform/x86_64/windows/build/js-config.h"],
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})
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return []
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# TODO(SERVER-103006): Stop including this flag when ASP is able to upgrade mongoc and mongocxx
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STREAMS_THIRD_PARTY_DIR = "src/mongo/db/modules/enterprise/src/streams/third_party"
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def package_specific_copt(package_name):
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if package_name.startswith("src/third_party") or package_name.startswith(STREAMS_THIRD_PARTY_DIR):
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return UBSAN_OPTS_THIRD_PARTY
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return []
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def package_specific_linkflag(package_name):
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if package_name.startswith("src/third_party") or package_name.startswith(STREAMS_THIRD_PARTY_DIR):
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return UBSAN_OPTS_THIRD_PARTY
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return []
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MONGO_GLOBAL_COPTS = MONGO_LINUX_CC_COPTS + MONGO_WIN_CC_COPTS
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def get_copts(name, package_name, copts = [], skip_windows_crt_flags = False):
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copts = MONGO_GLOBAL_COPTS + \
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package_specific_copt(package_name) + \
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copts + \
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force_includes_copt(package_name, name)
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if not skip_windows_crt_flags:
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copts = copts + WINDOWS_MULTITHREAD_RUNTIME_COPTS
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return copts
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MONGO_GLOBAL_LINKFLAGS = MONGO_LINUX_CC_LINKFLAGS + MONGO_WIN_CC_LINKFLAGS
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def get_linkopts(package_name, linkopts = []):
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return MONGO_GLOBAL_LINKFLAGS + package_specific_linkflag(package_name) + linkopts
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