| 2024-04-30 01:18:11 |
Paul Meckel |
bug |
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added bug |
| 2024-05-06 05:43:51 |
Launchpad Janitor |
llvm-toolchain-18 (Ubuntu): status |
New |
Confirmed |
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| 2024-05-08 21:17:21 |
Balint Reczey |
bug |
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added subscriber Balint Reczey |
| 2024-05-09 06:41:43 |
Shengjing Zhu |
nominated for series |
|
Ubuntu Noble |
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| 2024-05-09 06:41:43 |
Shengjing Zhu |
bug task added |
|
llvm-toolchain-18 (Ubuntu Noble) |
|
| 2024-05-09 06:41:43 |
Shengjing Zhu |
nominated for series |
|
Ubuntu Oracular |
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| 2024-05-09 06:41:43 |
Shengjing Zhu |
bug task added |
|
llvm-toolchain-18 (Ubuntu Oracular) |
|
| 2024-05-09 06:41:55 |
Shengjing Zhu |
llvm-toolchain-18 (Ubuntu Noble): status |
New |
Confirmed |
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| 2024-05-09 06:45:20 |
Shengjing Zhu |
llvm-toolchain-18 (Ubuntu Oracular): status |
Confirmed |
Fix Released |
|
| 2024-05-21 11:01:42 |
Wenyu Zhao |
bug |
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added subscriber Wenyu Zhao |
| 2024-05-28 08:37:57 |
Shengjing Zhu |
description |
Unlike all other llvm-*-linker-tools packages, this one does not install `/usr/lib/llvm-18/lib/LLVMgold.so`. It does however install a broken symlink to it at `/usr/lib/bfd-plugins/LLVMgold-18.so`
This results in compilation failures with clang++ when used with the `-flto` flag for link time optimization.
To reproduce:
main.cpp:
```c++
int main() { return 0; }
```
```bash
clang++ -flto main.cpp -o main
```
Results in:
```
/usr/bin/ld: /usr/lib/llvm-18/bin/../lib/LLVMgold.so: error loading plugin: /usr/lib/llvm-18/bin/../lib/LLVMgold.so: cannot open shared object file: No such file or directory
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
```
Package version is
llvm-18-linker-tools/noble,now 1:18.1.3-1 amd64
llvm-18-linker-tools:
Installed: 1:18.1.3-1
Candidate: 1:18.1.3-1
Version table:
*** 1:18.1.3-1 500
500 http://de.archive.ubuntu.com/ubuntu noble/universe amd64 Packages
100 /var/lib/dpkg/status |
[ Impact ]
* User can't use clang++-18 to build C++ code with -flto option.
[ Test Plan ]
* Install clang-18 from proposed updates.
* Try to build a C++ program with LTO (for example following the steps in original description.
[ Where problems could occur ]
* The missing LLVMgold.so is caused by switching to use mold in package building. Using mold is introduced in llvm 18. The fix is just to revert the change, and uses the same linker (gold) as old llvm versions. So the change looks safe.
[ Other Info ]
* No
[Original Description]
Unlike all other llvm-*-linker-tools packages, this one does not install `/usr/lib/llvm-18/lib/LLVMgold.so`. It does however install a broken symlink to it at `/usr/lib/bfd-plugins/LLVMgold-18.so`
This results in compilation failures with clang++ when used with the `-flto` flag for link time optimization.
To reproduce:
main.cpp:
```c++
int main() { return 0; }
```
```bash
clang++ -flto main.cpp -o main
```
Results in:
```
/usr/bin/ld: /usr/lib/llvm-18/bin/../lib/LLVMgold.so: error loading plugin: /usr/lib/llvm-18/bin/../lib/LLVMgold.so: cannot open shared object file: No such file or directory
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
```
Package version is
llvm-18-linker-tools/noble,now 1:18.1.3-1 amd64
llvm-18-linker-tools:
Installed: 1:18.1.3-1
Candidate: 1:18.1.3-1
Version table:
*** 1:18.1.3-1 500
500 http://de.archive.ubuntu.com/ubuntu noble/universe amd64 Packages
100 /var/lib/dpkg/status |
|
| 2024-05-28 08:42:56 |
Shengjing Zhu |
merge proposal linked |
|
https://code.launchpad.net/~zhsj/ubuntu/+source/llvm-toolchain-18/+git/llvm-toolchain-18/+merge/466494 |
|
