#!/usr/bin/env python
#
# gen-make.py -- generate makefiles for building Subversion
#


import os
import sys
import getopt
try:
  my_getopt = getopt.gnu_getopt
except AttributeError:
  my_getopt = getopt.getopt
import ConfigParser

# for the generator modules
sys.path.insert(0, os.path.join('build', 'generator'))

# for getversion
sys.path.insert(1, 'build')

gen_modules = {
  'make' : ('gen_make', 'Makefiles for POSIX systems'),
  'dsp' : ('gen_msvc_dsp', 'MSVC 6.x project files'),
  'vcproj' : ('gen_vcnet_vcproj', 'VC.Net project files'),
  }

def main(fname, gentype, verfname=None,
         skip_depends=0, other_options=None):
  if verfname is None:
    verfname = os.path.join('subversion', 'include', 'svn_version.h')

  gen_module = __import__(gen_modules[gentype][0])

  generator = gen_module.Generator(fname, verfname, other_options)

  if not skip_depends:
    generator.compute_hdr_deps()

  generator.write()

  if ('--debug', '') in other_options:
    for dep_type, target_dict in generator.graph.deps.items():
      sorted_targets = target_dict.keys(); sorted_targets.sort()
      for target in sorted_targets:
        print dep_type + ": " + _objinfo(target)
        for source in target_dict[target]:
          print "  " + _objinfo(source)
      print "=" * 72
    gen_keys = generator.__dict__.keys()
    gen_keys.sort()
    for name in gen_keys:
      value = generator.__dict__[name]
      if type(value) == type([]):
        print name + ": "
        for i in value:
          print "  " + _objinfo(i)
        print "=" * 72


def _objinfo(o):
  if type(o) == type(''):
    return repr(o)
  else:
    t = o.__class__.__name__
    n = getattr(o, 'name', '-')
    f = getattr(o, 'filename', '-')
    return "%s: %s %s" % (t,n,f)


def _usage_exit():
  "print usage, exit the script"
  print "USAGE:  gen-make.py [options...] [conf-file]"
  print "  -s        skip dependency generation"
  print "  --debug   print lots of stuff only developers care about"
  print "  --release release mode"
  print "  --reload  reuse all options from the previous invocation"
  print "            of the script, except -s, -t, --debug and --reload"
  print "  -t TYPE   use the TYPE generator; can be one of:"
  items = gen_modules.items()
  items.sort()
  for name, (module, desc) in items:
    print '            %-12s  %s' % (name, desc)
  print
  print "            The default generator type is 'make'"
  print
  print "  Makefile-specific options:"
  print
  print "  --assume-shared-libs"
  print "           omit dependencies on libraries, on the assumption that"
  print "           shared libraries will be built, so that it is unnecessary"
  print "           to relink executables when the libraries that they depend"
  print "           on change.  This is an option for developers who want to"
  print "           increase the speed of frequent rebuilds."
  print "           *** Do not use unless you understand the consequences. ***"
  print
  print "  UNIX-specific options:"
  print
  print "  --installed-libs"
  print "           Comma-separated list of Subversion libraries to find"
  print "           pre-installed instead of building (probably only"
  print "           useful for packagers)"
  print
  print "  Windows-specific options:"
  print
  print "  --with-apr=DIR"
  print "           the APR sources are in DIR"
  print
  print "  --with-apr-util=DIR"
  print "           the APR-Util sources are in DIR"
  print
  print "  --with-apr-iconv=DIR"
  print "           the APR-Iconv sources are in DIR"
  print
  print "  --with-berkeley-db=DIR"
  print "           look for Berkeley DB headers and libs in"
  print "           DIR"
  print
  print "  --with-neon=DIR"
  print "           the Neon sources are in DIR"
  print
  print "  --without-neon"
  print "           Don't build Neon sources (if present)"
  print
  print "  --with-serf=DIR"
  print "           the Serf sources are in DIR"
  print
  print "  --with-httpd=DIR"
  print "           the httpd sources and binaries required"
  print "           for building mod_dav_svn are in DIR;"
  print "           implies --with-apr{-util, -iconv}, but"
  print "           you can override them"
  print
  print "  --with-libintl=DIR"
  print "           look for GNU libintl headers and libs in DIR;"
  print "           implies --enable-nls"
  print
  print "  --with-openssl=DIR"
  print "           tell neon to look for OpenSSL headers"
  print "           and libs in DIR"
  print
  print "  --with-zlib=DIR"
  print "           tell neon to look for ZLib headers and"
  print "           libs in DIR"
  print
  print "  --with-junit=DIR"
  print "           look for the junit jar here"
  print "           junit is for testing the java bindings"
  print
  print "  --with-swig=DIR"
  print "           look for the swig program in DIR"
  print
  print "  --with-sasl=DIR"
  print "           look for the sasl headers and libs in DIR"
  print
  print "  --enable-pool-debug"
  print "           turn on APR pool debugging"
  print
  print "  --enable-purify"
  print "           add support for Purify instrumentation;"
  print "           implies --enable-pool-debug"
  print
  print "  --enable-quantify"
  print "           add support for Quantify instrumentation"
  print
  print "  --enable-nls"
  print "           add support for gettext localization"
  print
  print "  --enable-bdb-in-apr-util"
  print "           configure APR-Util to use Berkeley DB"
  print
  print "  --enable-ml"
  print "           enable use of ML assembler with zlib"
  print
  print "  --disable-shared"
  print "           only build static libraries"
  print
  print "  --vsnet-version=VER"
  print "           generate for VS.NET version VER (2002, 2003, 2005 or 2008)"
  print "           [only valid in combination with '-t vcproj']"
  print
  print "  --with-apr_memcache=DIR"
  print "           the apr_memcache sources are in DIR"
  sys.exit(0)


class Options:
  def __init__(self):
    self.list = []
    self.dict = {}

  def add(self, opt, val):
    if self.dict.has_key(opt):
      self.list[self.dict[opt]] = (opt, val)
    else:
      self.dict[opt] = len(self.list)
      self.list.append((opt, val))

if __name__ == '__main__':
  try:
    opts, args = my_getopt(sys.argv[1:], 'st:',
                           ['debug',
                            'release',
                            'reload',
                            'assume-shared-libs',
                            'with-apr=',
                            'with-apr-util=',
                            'with-apr-iconv=',
                            'with-berkeley-db=',
                            'with-neon=',
                            'without-neon',
                            'with-serf=',
                            'with-httpd=',
                            'with-libintl=',
                            'with-openssl=',
                            'with-zlib=',
                            'with-junit=',
                            'with-swig=',
                            'with-sasl=',
                            'with-apr_memcache=',
                            'enable-pool-debug',
                            'enable-purify',
                            'enable-quantify',
                            'enable-nls',
                            'enable-bdb-in-apr-util',
                            'enable-ml',
                            'disable-shared',
                            'installed-libs=',
                            'vsnet-version=',
                            ])
    if len(args) > 1:
      _usage_exit()
  except getopt.GetoptError:
    _usage_exit()

  conf = 'build.conf'
  skip = 0
  gentype = 'make'
  rest = Options()

  if args:
    conf = args[0]

  # First merge options with previously saved to gen-make.opts if --reload
  # options used
  for opt, val in opts:
    if opt == '--reload':
      prev_conf = ConfigParser.ConfigParser()
      prev_conf.read('gen-make.opts')
      for opt, val in prev_conf.items('options'):
        if opt != '--debug':
          rest.add(opt, val)
      del prev_conf
    else:
      rest.add(opt, val)

  # Parse options list
  for opt, val in rest.list:
    if opt == '-s':
      skip = 1
    elif opt == '-t':
      gentype = val
    else:
      if opt == '--with-httpd':
        rest.add('--with-apr', os.path.join(val, 'srclib', 'apr'))
        rest.add('--with-apr-util', os.path.join(val, 'srclib', 'apr-util'))
        rest.add('--with-apr-iconv', os.path.join(val, 'srclib', 'apr-iconv'))

  # Remember all options so that --reload and other scripts can use them
  opt_conf = open('gen-make.opts', 'w')
  opt_conf.write('[options]\n')
  for opt, val in rest.list:
    opt_conf.write(opt + ' = ' + val + '\n')
  opt_conf.close()

  if gentype not in gen_modules.keys():
    _usage_exit()

  main(conf, gentype, skip_depends=skip, other_options=rest.list)


### End of file.