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rustc.exe depends on winpthreads #13501
Description
Buildbot seems to use mingw-w64 package from mingw-builds with "thread=posix" option. In this setting, libstdc++-6.dll depends on libwinpthread-1.dll. Thus llvm binaries and rustc.exe/rustdoc.exe depend on it.
The dependency can be dropped by re-installing mingw-builds with "thread=win32" option.
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klutzy commentedon Apr 14, 2014
Side issue: stage0 doesn't have
libwinpthread-1.dllnow. It causes missing dll error on old mingw setup.qoh commentedon Apr 14, 2014
Using the nightly installer, running
rustcalways gives "The program can't start because libwinpthread-1.dll is missing from your computer. Try reinstalling the program to fix this problem." for me (can't run at all).vadimcn commentedon Apr 14, 2014
Oh, that's right, it's coming back to me now: there is a performance bug in winpthreads. I agree, we should use threads=win32.
brson commentedon Apr 14, 2014
I've started updating the bot to use win32 threads.
brson commentedon Apr 15, 2014
I just updated the bots to use win32 threads.
brson commentedon Apr 17, 2014
We have a new snap based on win32 threads. Can anyone confirm this is ok now?
klutzy commentedon Apr 18, 2014
Yep, it's fixed!
tomaka commentedon Sep 14, 2014
This issue is back in the 64 bits windows nightlies.
Starting
rustcimmediatly pops amissing libwinpthreads-1.dllerror.The 32 bits nightlies are working.
vadimcn commentedon Sep 14, 2014
Yep. Only seems to be a problem with nightlies though, snapshots are OK.
@brson, perhaps the nightly bot got installed with "posix" mingw?