buildtools/wafsamba/pkgconfig.py

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