1640497 - error: options `-C embed-bitcode=no` and `-C lto` are incompatible

Status: RESOLVED DUPLICATE of bug 1640982

(Firefox Build System :: General, defect, P3)

Description

[Alan Robertson]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0

Steps to reproduce:

Compiling firefox-77.0b9 Linux Mint 19.3
Python 3.8.0
rustc 1.45.0-nightly (215f2d329 2020-05-22)
node v14.1.0
npm 6.14.5
clang / clang++ clang version 9.0.0-2~ubuntu18.04.2

Unpack and cd to directory
mkdir src && cd src
cargo install cbindgen --force
cargo install rustfmt --force
../configure
make -j9
sudo make install

Actual results:

error: options -C embed-bitcode=no and -C lto are incompatible

error: could not compile gkrust.

Expected results:

Compilation fails due to both -C embed-bitcode=no and -C lto flags being passed to the compiler.

To fix:
Edit ~/Downloads/firefox-77.0b9.source/firefox-77.0/config/makefiles/rust.mk and comment out this line:

cargo_rustc_flags += -Clto
To:
#cargo_rustc_flags += -Clto

Compilation proceeds as normal, installs and runs.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.