Public bug reported:
# What was expected
clang should include the LLVM 21 resource directory in its search for
the ROCm device libs, regardless of whether the ROCM_PATH environment
variable is defined or not.
This should successfully build a program twice:
```
# apt install -y hipcc clang-21 rocm-device-libs-21
# cat > main.hip << END
int main() { return 0; }
END
# clang++-21 main.hip -lamdhip64 -o main
# ROCM_PATH=/usr clang++-21 main.hip -lamdhip64 -o main
```
# What happened instead
The program was only built successfully once:
```
# apt install -y hipcc clang-21 rocm-device-libs-21
# cat > main.hip << END
int main() { return 0; }
END
# clang++-21 main.hip -lamdhip64 -o main
# ROCM_PATH=/usr clang++-21 main.hip -lamdhip64 -o main
clang++-21: error: cannot find ROCm device library; provide its path via
'--rocm-path' or '--rocm-device-lib-path', or pass '-nogpulib' to build without
ROCm device library
```
# System Info
## lsb_release -rd
Description: Ubuntu Resolute Raccoon (development branch)
Release: 26.04
## apt-cache policy llvm-21
llvm-21:
Installed: 1:21.1.8-1ubuntu1
Candidate: 1:21.1.8-1ubuntu1
Version table:
*** 1:21.1.8-1ubuntu1 500
500 http://archive.ubuntu.com/ubuntu resolute/universe amd64 Packages
100 /var/lib/dpkg/status
** Affects: llvm-toolchain-21 (Ubuntu)
Importance: Undecided
Status: New
** Affects: llvm-toolchain-21 (Debian)
Importance: Unknown
Status: Unknown
** Bug watch added: Debian Bug tracker #1125754
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1125754
** Also affects: llvm-toolchain-21 (Debian) via
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1125754
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/2142542
Title:
ROCM_PATH envvar excludes resource directory from device libs search
path
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