| #!/usr/bin/env python |
| # Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """cups-config wrapper. |
| |
| cups-config, at least on Ubuntu Lucid and Natty, dumps all |
| cflags/ldflags/libs when passed the --libs argument. gyp would like |
| to keep these separate: cflags are only needed when compiling files |
| that use cups directly, while libs are only needed on the final link |
| line. |
| |
| This can be dramatically simplified or maybe removed (depending on GN |
| requirements) when this is fixed: |
| https://bugs.launchpad.net/ubuntu/+source/cupsys/+bug/163704 |
| is fixed. |
| """ |
| |
| import os |
| import subprocess |
| import sys |
| |
| def usage(): |
| print 'usage: %s {--api-version|--cflags|--ldflags|--libs|--libs-for-gn}' % \ |
| sys.argv[0] |
| |
| |
| def run_cups_config(cups_config, mode): |
| """Run cups-config with all --cflags etc modes, parse out the mode we want, |
| and return those flags as a list.""" |
| |
| cups = subprocess.Popen([cups_config, '--cflags', '--ldflags', '--libs'], |
| stdout=subprocess.PIPE) |
| flags = cups.communicate()[0].strip() |
| |
| flags_subset = [] |
| for flag in flags.split(): |
| flag_mode = None |
| if flag.startswith('-l'): |
| flag_mode = '--libs' |
| elif (flag.startswith('-L') or flag.startswith('-Wl,')): |
| flag_mode = '--ldflags' |
| elif (flag.startswith('-I') or flag.startswith('-D')): |
| flag_mode = '--cflags' |
| |
| # Be conservative: for flags where we don't know which mode they |
| # belong in, always include them. |
| if flag_mode is None or flag_mode == mode: |
| flags_subset.append(flag) |
| |
| # Note: cross build is confused by the option, and may trigger linker |
| # warning causing build error. |
| if '-lgnutls' in flags_subset: |
| flags_subset.remove('-lgnutls') |
| |
| return flags_subset |
| |
| |
| def main(): |
| if len(sys.argv) < 2: |
| usage() |
| return 1 |
| |
| mode = sys.argv[1] |
| if len(sys.argv) > 2: |
| sysroot = sys.argv[2] |
| cups_config = os.path.join(sysroot, 'usr', 'bin', 'cups-config') |
| if not os.path.exists(cups_config): |
| print 'cups-config not found: %s' % cups_config |
| return 1 |
| else: |
| cups_config = 'cups-config' |
| |
| if mode == '--api-version': |
| subprocess.call([cups_config, '--api-version']) |
| return 0 |
| |
| # All other modes get the flags. |
| if mode not in ('--cflags', '--libs', '--libs-for-gn', '--ldflags'): |
| usage() |
| return 1 |
| |
| if mode == '--libs-for-gn': |
| gn_libs_output = True |
| mode = '--libs' |
| else: |
| gn_libs_output = False |
| |
| flags = run_cups_config(cups_config, mode) |
| |
| if gn_libs_output: |
| # Strip "-l" from beginning of libs, quote, and surround in [ ]. |
| print '[' |
| for lib in flags: |
| if lib[:2] == "-l": |
| print '"%s", ' % lib[2:] |
| print ']' |
| else: |
| print ' '.join(flags) |
| |
| return 0 |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |