buildtools/wafsamba/pkgconfig.py

   1 # handle substitution of variables in pc files
   2
   3 import Build, sys, Logs
   4 from samba_utils import *
   5
   6 def subst_at_vars(task):
   7     '''substiture @VAR@ style variables in a file'''
   8     src = task.inputs[0].srcpath(task.env)
   9     tgt = task.outputs[0].bldpath(task.env)
  10
  11     f = open(src, 'r')
  12     s = f.read()
  13     f.close()
  14     # split on the vars
  15     a = re.split('(@\w+@)', s)
  16     out = []
  17     done_var = {}
  18     back_sub = [ ('PREFIX', '${prefix}'), ('EXEC_PREFIX', '${exec_prefix}')]
  19     for v in a:
  20         if re.match('@\w+@', v):
  21             vname = v[1:-1]
  22             if not vname in task.env and vname.upper() in task.env:
  23                 vname = vname.upper()
  24             if not vname in task.env:
  25                 Logs.error("Unknown substitution %s in %s" % (v, task.name))
  26                 sys.exit(1)
  27             v = SUBST_VARS_RECURSIVE(task.env[vname], task.env)
  28             # now we back substitute the allowed pc vars
  29             for (b, m) in back_sub:
  30                 s = task.env[b]
  31                 if s == v[0:len(s)]:
  32                     if not b in done_var:
  33                         # we don't want to substitute the first usage
  34                         done_var[b] = True
  35                     else:
  36                         v = m + v[len(s):]
  37                     break
  38         out.append(v)
  39     contents = ''.join(out)
  40     f = open(tgt, 'w')
  41     s = f.write(contents)
  42     f.close()
  43     return 0
  44
  45
  46 def PKG_CONFIG_FILES(bld, pc_files, vnum=None):
  47     '''install some pkg_config pc files'''
  48     dest = '${PKGCONFIGDIR}'
  49     dest = bld.EXPAND_VARIABLES(dest)
  50     for f in TO_LIST(pc_files):
  51         base=os.path.basename(f)
  52         t = bld.SAMBA_GENERATOR('PKGCONFIG_%s' % base,
  53                                 rule=subst_at_vars,
  54                                 source=f+'.in',
  55                                 target=f)
  56         bld.add_manual_dependency(bld.path.find_or_declare(f), bld.env['PREFIX'])
  57         t.vars = []
  58         if t.env.RPATH_ON_INSTALL:
  59             t.env.LIB_RPATH = t.env.RPATH_ST % t.env.LIBDIR
  60         else:
  61             t.env.LIB_RPATH = ''
  62         if vnum:
  63             t.env.PACKAGE_VERSION = vnum
  64         for v in [ 'PREFIX', 'EXEC_PREFIX', 'LIB_RPATH' ]:
  65             t.vars.append(t.env[v])
  66         bld.INSTALL_FILES(dest, f, flat=True, destname=base)
  67 Build.BuildContext.PKG_CONFIG_FILES = PKG_CONFIG_FILES
  68
  69