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| author | Konrad Kleine <kkleine@redhat.com> | 2025-11-03 17:00:06 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-11-03 16:00:06 +0000 |
| commit | bf5332cd8266cddb3bfb2e8436a2161c10602855 (patch) | |
| tree | e5205d241f90ecca62b436609a61903b1112207c /llvm/tools/llvm-diff/lib | |
| parent | 3bd59634d2d21328e32c06ecd6a7a1188a1b1993 (diff) | |
| download | llvm-bf5332cd8266cddb3bfb2e8436a2161c10602855.zip llvm-bf5332cd8266cddb3bfb2e8436a2161c10602855.tar.gz llvm-bf5332cd8266cddb3bfb2e8436a2161c10602855.tar.bz2 | |
[flang][driver] Bring --gcc-triple to flang (#165886)
When there are multiple gcc versions installed, we want `flang` to be
able
to find the right one based on the triple. Here's `flang` selecting an
unwanted `gcc` candidate installation, namely
`/usr/lib/gcc/x86_64-linux-gnu/15`:
```
~/src/llvm-project/main/build-RelWithDebInfo > ./bin/flang -v
flang version 22.0.0custombuild
Target: x86_64-redhat-linux-gnu
Thread model: posix
InstalledDir: /home/fedora/src/llvm-project/main/build-RelWithDebInfo/bin
System configuration file directory: /etc/clang/
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/15
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/15
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/15
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
```
When passing `--gcc-triple=x86_64-redhat-linux` we get the desired gcc
candidate installation:
```
~/src/llvm-project/main/build-RelWithDebInfo > ./bin/flang --gcc-triple=x86_64-redhat-linux -v
flang version 22.0.0custombuild
Target: x86_64-redhat-linux-gnu
Thread model: posix
InstalledDir: /home/fedora/src/llvm-project/main/build-RelWithDebInfo/bin
System configuration file directory: /etc/clang/
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/15
Selected GCC installation: /usr/lib/gcc/x86_64-redhat-linux/15
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
```
* Test: `LIT_FILTER="Flang :: Driver/gcc-triple.f90" ninja check-flang`
* Copied `flang/test/Driver/Inputs/fedora_39_tree` from
`clang/test/Driver/Inputs/fedora_39_tree`.
* Testing what default triple is selected when two are possible.
* Testing that we can select an existing triple.
* Testing that triple is not selected if it doesn't exist.
Diffstat (limited to 'llvm/tools/llvm-diff/lib')
0 files changed, 0 insertions, 0 deletions