[llvm-bugs] [Bug 40272] New: LLVM Visual Studio Toolchain no longer works with Incredibuild

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Jan 9 09:29:41 PST 2019


            Bug ID: 40272
           Summary: LLVM Visual Studio Toolchain no longer works with
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Driver
          Assignee: unassignedclangbugs at nondot.org
          Reporter: steveire at gmail.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

Prior to Clang 7.0.0, we shipped a LLVM-vs2015 toolchain file which required
the compiler to be named `CL.exe`, so we also generated a compiler driver of
that name from the buildsystem.

However, after Clang 7.0.0, we ship a new toolchain file which instructs
MSBuild to use `clang-cl.exe` as the compiler. This means that we no longer
ship a clang driver named `CL.exe`.

Incredibuild requires the compiler to be named `CL.exe`. If it is not so named,
Incredibuild does not distribute or parallelize the build. This means that
builds which ordinarily rely on Incredibuild are so slow that clang-cl can not
be adopted.

I suggest making clang-cl.exe work with Incredibuild again by some means.

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