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Compiler race condition with liblua52 #268

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Zerkenn opened this issue Mar 17, 2025 · 0 comments · May be fixed by #270
Open

Compiler race condition with liblua52 #268

Zerkenn opened this issue Mar 17, 2025 · 0 comments · May be fixed by #270

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@Zerkenn
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Zerkenn commented Mar 17, 2025

When compiling azerothcore with mod-eluna I get a random intermittent compilation failure that I believe is a race condition.
I clean build each time.
When compiling with make -j1 the issue never occurs HOWEVER when compiling with multiple threads make -j10 I randomly get this failure with linking liblua52.a

I have had this randomly occur on a ubuntu 24.04 docker container and a debian 12 vm.

I have limited knowledge with c++ so I figured I would report this. Providing the cmake list for mod eluna to chat gpt believes there is a race condition. Which I think is correct.

In src/lualib/lua/CMakeLists.txt line 71 to 78
Image

Image

Failure 1:

[  6%] Linking C static library liblua52.a
[  6%] Linking C static library liblua52.a
bfd plugin: LLVM gold plugin has failed to create LTO module: section table goes past the end of file
bfd plugin: LLVM gold plugin has failed to create LTO module: The end of the file was unexpectedly encountered
bfd plugin: LLVM gold plugin has failed to create LTO module: The end of the file was unexpectedly encountered
bfd plugin: LLVM gold plugin has failed to create LTO module: The end of the file was unexpectedly encountered
bfd plugin: LLVM gold plugin has failed to create LTO module: The end of the file was unexpectedly encountered
bfd plugin: LLVM gold plugin has failed to create LTO module: The end of the file was unexpectedly encountered
bfd plugin: LLVM gold plugin has failed to create LTO module: The end of the file was unexpectedly encountered
/usr/bin/ranlib: liblua52.a: error reading lvm.c.o: file truncated
make[2]: *** [modules/mod-eluna/src/lualib/lua/CMakeFiles/lualib.dir/build.make:594: modules/mod-eluna/src/lualib/lua/liblua52.a] Error 1
make[2]: *** Deleting file 'modules/mod-eluna/src/lualib/lua/liblua52.a'
[  6%] Built target lualib_static
make[1]: *** [CMakeFiles/Makefile2:658: modules/mod-eluna/src/lualib/lua/CMakeFiles/lualib.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

Failure 2:

[  7%] Building C object modules/mod-eluna/src/lualib/lua/CMakeFiles/lualib_static.dir/__/__/__/__/__/_deps/lua52-src/src/lzio.c.o
[  7%] Building C object modules/mod-eluna/src/lualib/lua/CMakeFiles/lualib.dir/__/__/__/__/__/_deps/lua52-src/src/lzio.c.o
[  7%] Linking C static library liblua52.a
[  7%] Linking C static library liblua52.a
/usr/bin/ar: unable to copy file 'liblua52.a'; reason: No such file or directory
make[2]: *** [modules/mod-eluna/src/lualib/lua/CMakeFiles/lualib_static.dir/build.make:594: modules/mod-eluna/src/lualib/lua/liblua52.a] Error 1
make[1]: *** [CMakeFiles/Makefile2:684: modules/mod-eluna/src/lualib/lua/CMakeFiles/lualib_static.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
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fix(Compiler): Add dependency to prevent race condition error on compile mostlynick3/mod-eluna
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@Zerkenn