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Fix uses of std++ on bsd (bazelbuild#14860)
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This fix is the same as bazelbuild#14542
but for freebsd and openbsd

Hopefully fixes bazelbuild/rules_rust#978

Closes bazelbuild#14668.

PiperOrigin-RevId: 429354084
(cherry picked from commit a987b98)

Co-authored-by: Keith Smiley <keithbsmiley@gmail.com>
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brentleyjones and keith authored Feb 17, 2022
1 parent 3297d92 commit 031a772
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Showing 2 changed files with 4 additions and 2 deletions.
2 changes: 1 addition & 1 deletion tools/cpp/cc_toolchain_config.bzl
Original file line number Diff line number Diff line change
Expand Up @@ -371,7 +371,7 @@ def _impl(ctx):
flag_groups = [
flag_group(
flags = [
"-lstdc++",
"-lc++",
"-Wl,-z,relro,-z,now",
"-no-canonical-prefixes",
],
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4 changes: 3 additions & 1 deletion tools/cpp/unix_cc_configure.bzl
Original file line number Diff line number Diff line change
Expand Up @@ -340,6 +340,7 @@ def configure_unix_toolchain(repository_ctx, cpu_value, overriden_tools):

repository_ctx.file("tools/cpp/empty.cc", "int main() {}")
darwin = cpu_value.startswith("darwin")
bsd = cpu_value == "freebsd" or cpu_value == "openbsd"

cc = find_cc(repository_ctx, overriden_tools)
is_clang = _is_clang(repository_ctx, cc)
Expand Down Expand Up @@ -400,7 +401,8 @@ def configure_unix_toolchain(repository_ctx, cpu_value, overriden_tools):
False,
), ":")

bazel_linkopts = "-lc++:-lm" if darwin else "-lstdc++:-lm"
use_libcpp = darwin or bsd
bazel_linkopts = "-lc++:-lm" if use_libcpp else "-lstdc++:-lm"
bazel_linklibs = ""
if repository_ctx.flag_enabled("incompatible_linkopts_to_linklibs"):
bazel_linkopts, bazel_linklibs = bazel_linklibs, bazel_linkopts
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