sanitizer_common: Change gen_dynamic_list.py to take a -o argument instead of writing to stdout.

This makes the script a little more gn friendly; gn does not support redirecting the output of a script. Differential Revision: https://reviews.llvm.org/D56579 llvm-svn: 350980

Author: pcc

compiler-rt/cmake/Modules/SanitizerUtils.cmake

@@ -30,7 +30,7 @@ macro(add_sanitizer_rt_symbols name)
  add_custom_command(OUTPUT ${stamp}
  COMMAND ${PYTHON_EXECUTABLE}
  ${SANITIZER_GEN_DYNAMIC_LIST} ${extra_args} $<TARGET_FILE:${target_name}>
- > $<TARGET_FILE:${target_name}>.syms
+ -o $<TARGET_FILE:${target_name}>.syms
  COMMAND ${CMAKE_COMMAND} -E touch ${stamp}
  DEPENDS ${target_name} ${SANITIZER_GEN_DYNAMIC_LIST} ${ARG_EXTRA}
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
@@ -80,7 +80,7 @@ macro(add_sanitizer_rt_version_list name)
  add_custom_command(OUTPUT ${vers}
  COMMAND ${PYTHON_EXECUTABLE}
  ${SANITIZER_GEN_DYNAMIC_LIST} --version-list ${args}
- > ${vers}
+ -o ${vers}
  DEPENDS ${SANITIZER_GEN_DYNAMIC_LIST} ${ARG_EXTRA} ${ARG_LIBS}
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  COMMENT "Generating version list for ${name}"

compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py

@@ -14,6 +14,7 @@
 # gen_dynamic_list.py libclang_rt.*san*.a [ files ... ]
 #
 #===------------------------------------------------------------------------===#
+from __future__ import print_function
 import argparse
 import os
 import re
@@ -84,6 +85,7 @@ def main(argv):
  parser.add_argument('--version-list', action='store_true')
  parser.add_argument('--extra', default=[], action='append')
  parser.add_argument('libraries', default=[], nargs='+')
+ parser.add_argument('-o', '--output', required=True)
  args = parser.parse_args()
 
  result = []
@@ -117,16 +119,17 @@ def main(argv):
  for line in f:
  result.append(line.rstrip())
  # Print the resulting list in the format recognized by ld.
- print('{')
- if args.version_list:
- print('global:')
- result.sort()
- for f in result:
- print(u' %s;' % f)
- if args.version_list:
- print('local:')
- print(' *;')
- print('};')
+ with open(args.output, 'w') as f:
+ print('{', file=f)
+ if args.version_list:
+ print('global:', file=f)
+ result.sort()
+ for sym in result:
+ print(u' %s;' % sym, file=f)
+ if args.version_list:
+ print('local:', file=f)
+ print(' *;', file=f)
+ print('};', file=f)
 
 if __name__ == '__main__':
  main(sys.argv)