LDC+DUB on Windows: folder separator is ignored

[redstar]

Executing DUB with LDC2 1.1.0-alpha1 on Windows results in:

C:\OpenSource\cpuid>dub
Performing "debug" build using ldc2 for x86_64.
cpuid 0.2.4+commit.4.g36ec8b4: building configuration "library"...
Error: module sourcecpuidamd is in file 'sourcecpuidamd.d' which cannot be read
import path[0] = C:/Temp/ldc2-1.1.0-alpha1-win64-msvc/bin/../include/d/ldc
import path[1] = C:/Temp/ldc2-1.1.0-alpha1-win64-msvc/bin/../include/d
import path[2] = source
ldc2 failed with exit code 1.

Obviously the path is source\cpuid\amd.d. DUB display the right path with -v:

Generate target cpuid (staticLibrary C:\OpenSource\cpuid cpuid)
Performing "debug" build using ldc2 for x86_64.
Target 'C:\OpenSource\cpuid\.dub\build\library-debug-windows-x86_64-ldc_0-B933F7C743324C2F06A81BFB0EDA156F\cpuid.lib' doesn't exist, need rebuild.
cpuid 0.2.4+commit.4.g36ec8b4: building configuration "library"...
ldc2 -lib -of.dub\build\library-debug-windows-x86_64-ldc_0-B933F7C743324C2F06A81BFB0EDA156F\cpuid.lib -d-debug -g -w -oq -od=.dub/obj -d-version=Have_cpuid -Isource source\cpuid\amd.d source\cpuid\common.d source\cpuid\intel.d source\cpuid\report.d source\cpuid\unified.d source\cpuid\x86_any.d
Error: module sourcecpuidamd is in file 'sourcecpuidamd.d' which cannot be read
import path[0] = C:/Temp/ldc2-1.1.0-alpha1-win64-msvc/bin/../include/d/ldc
import path[1] = C:/Temp/ldc2-1.1.0-alpha1-win64-msvc/bin/../include/d
import path[2] = source
FAIL .dub\build\library-debug-windows-x86_64-ldc_0-B933F7C743324C2F06A81BFB0EDA156F\ cpuid staticLibrary
ldc2 failed with exit code 1.

It is yet unclear if this is an DUB or an LDC problem.

[redstar]

It is a problem with the response file. The command line is correct but if the arguments are put into a response file (like DUB) the error occurs.

[redstar]

... and the error goes away if all \ are replaced by / in the response file.

[kinke]

The backslashes get eaten in LLVM's ExpandResponseFiles() called with TokenizeGNUCommandLine arg in LLVM's CommandLineParser::ParseCommandLineOptions(). :/

[kinke]

Fix is on its way.

[dnadlinger]

Thanks!

[kinke]

Fixed by #1635 (for LLVM 3.8+). Please use the upcoming master-1983 CI builds (ready in 1.5 hours) or newer on our CI release page.