[cfe-dev] CMake + MSYS broken on ToT ?

[Matthieu Monrocq]

Hello,

I've got the impression that the CMake + MSYS combination no longer works on
ToT (r128013)... though it could, obviously, be my own broken environment.

My llvm repository is in: /d/llvm
And my build folder is: /d/llvm-cmake

I have invoked CMake like so
/d/llvm-cmake~
$ cmake ../llvm -G"MSYS Makefiles"

And I have then tried to build using
/d/llvm-cmake
$ make
[  0%] Building CXX object
lib/Support/CMakeFiles/LLVMSupport.dir/CommandLine.cpp.obj
Cannot create temporary file in
d:\llvm-cmake\lib\Support\c\DOCUME~1\MyPC\LOCALS~1\Temp\: No such file or
directory

This application has requested the Runtime to terminate it in an unusual
way.
Please contact the application's support team for more information.
make[2]: *** [lib/Support/CMakeFiles/LLVMSupport.dir/CommandLine.cpp.obj]
Error 3
make[1]: *** [lib/Support/CMakeFiles/LLVMSupport.dir/all] Error 2
make: *** [all] Error 2


>From what I can see, mount has some hardcoded paths on mingw/msys:
$ mount | grep Temp
C:\DOCUME~1\MyPC\LOCALS~1\Temp on /tmp type user (binmode,noumount)

$ env | grep TEMP
TEMP=/tmp

$ echo $TEMP
c/DOCUME~1/MyPC/LOCALS~1/Temp

Msys does not seem capable to correctly "deduce" the path here, I have tried
modifying the "mount" configuration, but it seems builtin (nothing in
/etc/fstab) and I cannot seem to be able to actually modify this



Have there been recent changes to the CMake scripts that could explain this
? Or has my environment suddenly ceased to work ?

I'd appreciate any pointer...


Regards,
Matthieu
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