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