[LLVMbugs] [Bug 17429] New: GetSVN.cmake is run even when nothing changed

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=17429

            Bug ID: 17429
           Summary: GetSVN.cmake is run even when nothing changed
           Product: Build scripts
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: cmake
          Assignee: unassignedbugs at nondot.org
          Reporter: rafael.espindola at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 11313
  --> http://llvm.org/bugs/attachment.cgi?id=11313&action=edit
hack patch

This is really annoying in a development environment since cmake is *much*
slower than ninja figuring out it has nothing to do.

On my machine "ninja bin/clang" takes 0m2.377s when there is nothing to do.

With the hack patch attached that just disables the version information the
same command takes 0m0.207s.

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