| Issue |
168911
|
| Summary |
flang build error on Linux25.04 ; cmake3.31.6 ; gcc14.2.0
|
| Labels |
flang
|
| Assignees |
|
| Reporter |
NicolasAnquetil
|
I tryed to build flang on stock Ubuntu 25.04 ; cmake 3.31.6 ; gcc 14.2.0 ; fresh clone of llvm-project (as of 11/18/2025)
.
I followed the instructions in https://flang.llvm.org/docs/GettingStarted.html , for "in tree" build.
The only change is anadded an option to limit jobs creation by ninja : `-DFLANG_PARALLEL_COMPILE_JOBS=4` to avoid freezing my machine.
Ninja compiled many of the files, but stops on "Building CXX object tools/flan...les/FortranLower.dir/ConvertExpr.cpp.o"
I am attaching the log file for the error only
[error.log](https://github.com/user-attachments/files/23659604/error.log)
Following discussion on Discord, I could finally build by changing `-DFLANG_ENABLE_WERROR=ON` (from https://flang.llvm.org/docs/GettingStarted.html) to `OFF`
(Notice that the buildbot is using that same `-DFLANG_ENABLE_WERROR=OFF` option)
So it is an issue that can be stepped over, but the solution is a bit radical
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