nixpkgs/pkgs/development/tools/build-managers/bazel/cpp-test.nix
Wael Nasreddine c49b7f64d1
bazel: fix the compilation of .proto on Darwin (#63879)
On Darwin, the last argument to GCC is coming up as an empty string.
This is breaking the build of proto_library targets. However, I was not
able to reproduce with the example cpp project[0].

This commit patches the cc_wrapper of Bazel that gets installed on
Darwin to remove the last argument if it's an empty string. This is
not a probem on Linux.

[0]: https://github.com/bazelbuild/examples/tree/master/cpp-tutorial/stage3
2019-06-29 11:07:21 -07:00

50 lines
1000 B
Nix

{
bazel
, bazelTest
, bazel-examples
, gccStdenv
, lib
, runLocal
, runtimeShell
, writeScript
, writeText
}:
let
toolsBazel = writeScript "bazel" ''
#! ${runtimeShell}
export CXX='${gccStdenv.cc}/bin/g++'
export LD='${gccStdenv.cc}/bin/ld'
export CC='${gccStdenv.cc}/bin/gcc'
# XXX: hack for macosX, this flags disable bazel usage of xcode
# See: https://github.com/bazelbuild/bazel/issues/4231
export BAZEL_USE_CPP_ONLY_TOOLCHAIN=1
exec "$BAZEL_REAL" "$@"
'';
workspaceDir = runLocal "our_workspace" {} (''
cp -r ${bazel-examples}/cpp-tutorial/stage3 $out
find $out -type d -exec chmod 755 {} \;
''
+ (lib.optionalString gccStdenv.isDarwin ''
mkdir $out/tools
cp ${toolsBazel} $out/tools/bazel
''));
testBazel = bazelTest {
name = "bazel-test-cpp";
inherit workspaceDir;
bazelPkg = bazel;
bazelScript = ''
${bazel}/bin/bazel \
build --verbose_failures \
//...
'';
};
in testBazel