Closed
Description
A build error was reported in one of my projects (IsaacWoods/poplar#54) with recent nightlies (rustc 1.45.0-nightly (fa51f810e 2020-04-29) is the last known good nightly) using the target x86_64-unknown-uefi. The errors were:
Compiling rustc-std-workspace-core v1.99.0 (/home/mtnygard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/tools/rustc-std-workspace-core)
error: <inline asm>:2:33: error: unknown flag
.section .llvmbc,"e"
^
error: <inline asm>:3:34: error: unknown flag
.section .llvmcmd,"e"
^
error: aborting due to 2 previous errors
error: could not compile `rustc-std-workspace-core`.
To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: <inline asm>:2:33: error: unknown flag
.section .llvmbc,"e"
^
error: <inline asm>:3:34: error: unknown flag
.section .llvmcmd,"e"
^
error: <inline asm>:2:33: error: unknown flag
.section .llvmbc,"e"
^
error: <inline asm>:3:34: error: unknown flag
.section .llvmcmd,"e"
^
error: <inline asm>:55:33: error: unknown flag
.section .llvmbc,"e"
^
error: <inline asm>:56:34: error: unknown flag
.section .llvmcmd,"e"
^
It looks like this issue was introduced by #71528. I will submit a PR that I believe fixes this on UEFI targets.