[llvm] r350688 - gn build: Copy file permissions from input file in configure_file() emulation.

[Peter Collingbourne via llvm-commits]

Author: pcc
Date: Tue Jan  8 20:39:29 2019
New Revision: 350688

URL: http://llvm.org/viewvc/llvm-project?rev=350688&view=rev
Log:
gn build: Copy file permissions from input file in configure_file() emulation.

Most significantly, this makes bin/llvm-lit executable so that it
can be run in the usual way.

Differential Revision: https://reviews.llvm.org/D56423

Modified:
    llvm/trunk/utils/gn/build/write_cmake_config.py

Modified: llvm/trunk/utils/gn/build/write_cmake_config.py
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/gn/build/write_cmake_config.py?rev=350688&r1=350687&r2=350688&view=diff
==============================================================================
--- llvm/trunk/utils/gn/build/write_cmake_config.py (original)
+++ llvm/trunk/utils/gn/build/write_cmake_config.py Tue Jan  8 20:39:29 2019
@@ -101,6 +101,7 @@ def main():
 
     if not os.path.exists(args.output) or open(args.output).read() != output:
         open(args.output, 'w').write(output)
+        os.chmod(args.output, os.stat(args.input).st_mode & 0777)
 
 
 if __name__ == '__main__':