Self-defined C/C++ toolchain with "no_legacy_features" does not accept unknown features

[andreas-0815-qwertz]

I am creating a toolchain for Gcc 3.4.5; this Gcc version does not support parameter files for the linker (linker_param_file feature). Therefore, I have defined the feature "no_legacy_features" in my toolchain. Compiler and archiver features are supported by issuing the related flags in the command lines, but the linker features are unfortunately not. I am sure I am missing something but could you please tell me what?

I have attached a minimal working example using my toolchain with /usr/bin/gcc. On a linux system you should be able to unpack the tarball and run bazel build --noenable_bzlmod --platforms=//bazel_utils/platforms:onepc_platform -s //:toolchain_test to see, what I mean. The surprising thing for me is that the feature default_compile_flags does not seem to work.

My bazel configuration is:

$ bazel version
Bazelisk version: v1.17.0
Build label: 7.2.1
Build target: @@//src/main/java/com/google/devtools/build/lib/bazel:BazelServer
Build time: Tue Jun 25 15:53:05 2024 (1719330785)
Build timestamp: 1719330785
Build timestamp as int: 1719330785

toolchain_test.tar.gz