[llvm-bugs] [Bug 46664] New: clang searches filesystem for CUDA installation when compiling C/C++ code

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46664

            Bug ID: 46664
           Summary: clang searches filesystem for CUDA installation when
                    compiling C/C++ code
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: CUDA
          Assignee: unassignedclangbugs at nondot.org
          Reporter: tstellar at redhat.com
                CC: llvm-bugs at lists.llvm.org

To reproduce, install strace and run:

echo "int main(){}" | strace ./bin/clang -x c -o /dev/null -

One my system, I get, 10 access() syscalls looking for ptxas, and 4 stat()
syscalls looking for a cuda install.

It would be nice it we could eliminate the filesystem searches, since the
aren't necessary, and can reduce compile time performance especially on systems
with slow or network mounted filesystems.

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