Rust: building compiler docs fails

[llogiq]

Steps taken:

$ git clone https://github.com/rust-lang/rust &&\
cd rust && ./configure --enabled compiler idols &&\
make docs

Expected result:

Full docs including compiler docs in doc/ subdirectory

Actual result:

make fails during doc/rustc_built-in/index.html, rustdoc error: Unrecognized option: 'l'.

[hanna-kruppe]

Again? #36031 was only fixed 11 days ago :cry: I second this motion by @retep998 in the last issue:

Might be worth having --enable-compiler-docs on some of the buildbots.

[llogiq]

I third @retep998's motion. At least one should have it.

[ollie27]

It looks like this was caused by #35021 (cc @japaric). It's trying to pass -lstatic=compiler-rt to rustdoc when compiling the docs for compiler_builtins but rustdoc doesn't support -l.

[stefanhusmann]

How can this be fixed? Alternativly, how can I suppress the build of docs?

[Manishearth]

./configure --disable-compiler-docs . It's off by default.

I use

diff --git a/mk/crates.mk b/mk/crates.mk
index c7abf27..f68fc2a 100644
--- a/mk/crates.mk
+++ b/mk/crates.mk
@@ -78,7 +78,6 @@ DEPS_panic_abort := libc alloc
 DEPS_panic_unwind := libc alloc unwind
 DEPS_unwind := libc

-RUSTFLAGS_compiler_builtins := -lstatic=compiler-rt

 # FIXME(stage0): change this to just `RUSTFLAGS_panic_abort := ...`
 RUSTFLAGS1_panic_abort := -C panic=abort

on my builds to get the compiler doc build to pass

[ollie27]

This can be closed now. It was a bug in the long gone Makefiles. The compiler docs now build fine with rustbuild, or at least did and will again after #40852.