1 files changed, 230 insertions, 0 deletions
diff --git a/build/gen-build.py b/build/gen-build.py
new file mode 100755
index 0000000..aa94c33
--- /dev/null
+++ b/build/gen-build.py
@@ -0,0 +1,230 @@
+#!/usr/bin/env python
+#
+# USAGE: gen-build.py TYPE
+#
+# where TYPE is one of: make, dsp, vcproj
+#
+# It reads build.conf from the current directory, and produces its output
+# into the current directory.
+#
+
+
+import os
+import ConfigParser
+import getopt
+import string
+import glob
+import re
+
+#import ezt
+
+#
+# legal platforms: aix, beos, netware, os2, os390, unix, win32
+# 'make' users: aix, beos, os2, os390, unix, win32 (mingw)
+#
+PLATFORMS = [ 'aix', 'beos', 'netware', 'os2', 'os390', 'unix', 'win32' ]
+MAKE_PLATFORMS = [
+  ('unix', None),
+  ('aix', 'unix'),
+  ('beos', 'unix'),
+  ('os2', 'unix'),
+  ('os390', 'unix'),
+  ('win32', 'unix'),
+  ]
+# note: MAKE_PLATFORMS is an ordered set. we want to generate unix symbols
+#       first, so that the later platforms can reference them.
+
+
+def main():
+  parser = ConfigParser.ConfigParser()
+  parser.read('build.conf')
+
+  if parser.has_option('options', 'dsp'):
+    dsp_file = parser.get('options', 'dsp')
+  else:
+    dsp_file = None
+
+  headers = get_files(parser.get('options', 'headers'))
+
+  # compute the relevant headers, along with the implied includes
+  legal_deps = { }
+  for fname in headers:
+    legal_deps[os.path.basename(fname)] = fname
+
+  h_deps = { }
+  for fname in headers:
+    h_deps[os.path.basename(fname)] = extract_deps(fname, legal_deps)
+  resolve_deps(h_deps)
+
+  f = open('build-outputs.mk', 'w')
+  f.write('# DO NOT EDIT. AUTOMATICALLY GENERATED.\n\n')
+
+  # write out the platform-independent files
+  files = get_files(parser.get('options', 'paths'))
+  objects, dirs = write_objects(f, legal_deps, h_deps, files)
+  f.write('\nOBJECTS_all = %s\n\n' % string.join(objects))
+
+  # for each platform and each subdirectory holding platform-specific files,
+  # write out their compilation rules, and an OBJECT_<subdir>_<plat> symbol.
+  for platform, parent in MAKE_PLATFORMS:
+
+    # record the object symbols to build for each platform
+    group = [ '$(OBJECTS_all)' ]
+
+    # If we're doing win32, we're going to look in the libapr.dsp file
+    # for those files that we have to manually add to our list.
+    inherit_parent = { }
+    if platform == 'win32' and dsp_file:
+      for line in open(dsp_file).readlines():
+        if line[:7] != 'SOURCE=':
+          continue
+        if line[7:].find('unix') != -1:
+          # skip the leading .\ and split it out
+          inherit_files = line[9:].strip().split('\\')
+          # change the .c to .lo
+          assert inherit_files[-1][-2:] == '.c'
+          inherit_files[-1] = inherit_files[-1][:-2] + '.lo'
+          # replace the \\'s with /'s
+          inherit_line = '/'.join(inherit_files)
+          if not inherit_parent.has_key(inherit_files[0]):
+            inherit_parent[inherit_files[0]] = []
+          inherit_parent[inherit_files[0]].append(inherit_line)
+
+    for subdir in string.split(parser.get('options', 'platform_dirs')):
+      path = '%s/%s' % (subdir, platform)
+      if not os.path.exists(path):
+        # this subdir doesn't have a subdir for this platform, so we'll
+        # use the parent-platform's set of symbols
+        if parent:
+          group.append('$(OBJECTS_%s_%s)' % (subdir, parent))
+        continue
+
+      # remember that this directory has files/objects
+      dirs[path] = None
+
+      # write out the compilation lines for this subdir
+      files = get_files(path + '/*.c')
+      objects, _unused = write_objects(f, legal_deps, h_deps, files)
+
+      if inherit_parent.has_key(subdir):
+        objects = objects + inherit_parent[subdir]
+
+      symname = 'OBJECTS_%s_%s' % (subdir, platform)
+
+      objects.sort()
+
+      # and write the symbol for the whole group
+      f.write('\n%s = %s\n\n' % (symname, string.join(objects)))
+
+      # and include that symbol in the group
+      group.append('$(%s)' % symname)
+
+    group.sort()
+
+    # write out a symbol which contains the necessary files
+    f.write('OBJECTS_%s = %s\n\n' % (platform, string.join(group)))
+
+  f.write('HEADERS = $(top_srcdir)/%s\n\n' % string.join(headers, ' $(top_srcdir)/'))
+  f.write('SOURCE_DIRS = %s $(EXTRA_SOURCE_DIRS)\n\n' % string.join(dirs.keys()))
+
+  if parser.has_option('options', 'modules'):
+    modules = parser.get('options', 'modules')
+
+    for mod in string.split(modules):
+      files = get_files(parser.get(mod, 'paths'))
+      objects, _unused = write_objects(f, legal_deps, h_deps, files)
+      flat_objects = string.join(objects)
+      f.write('OBJECTS_%s = %s\n' % (mod, flat_objects))
+
+      if parser.has_option(mod, 'target'):
+        target = parser.get(mod, 'target')
+        f.write('MODULE_%s = %s\n' % (mod, target))
+        f.write('%s: %s\n' % (target, flat_objects))
+        f.write('\t$(LINK_MODULE) -o $@ $(OBJECTS_%s) $(LDADD_%s)\n' % (mod, mod))
+
+      f.write('\n')
+
+  # Build a list of all necessary directories in build tree
+  alldirs = { }
+  for dir in dirs.keys():
+    d = dir
+    while d:
+      alldirs[d] = None
+      d = os.path.dirname(d)
+
+  # Sort so 'foo' is before 'foo/bar'
+  keys = alldirs.keys()
+  keys.sort()
+  f.write('BUILD_DIRS = %s\n\n' % string.join(keys))
+
+  f.write('.make.dirs: $(srcdir)/build-outputs.mk\n' \
+          '\t@for d in $(BUILD_DIRS); do test -d $$d || mkdir $$d; done\n' \
+          '\t@echo timestamp > $@\n')
+
+
+def write_objects(f, legal_deps, h_deps, files):
+  dirs = { }
+  objects = [ ]
+
+  for file in files:
+    if file[-10:] == '/apr_app.c':
+      continue
+    assert file[-2:] == '.c'
+    obj = file[:-2] + '.lo'
+    objects.append(obj)
+
+    dirs[os.path.dirname(file)] = None
+
+    # what headers does this file include, along with the implied headers
+    deps = extract_deps(file, legal_deps)
+    for hdr in deps.keys():
+      deps.update(h_deps.get(hdr, {}))
+
+    vals = deps.values()
+    vals.sort()
+    f.write('%s: %s .make.dirs %s\n' % (obj, file, string.join(vals)))
+
+  objects.sort()
+
+  return objects, dirs
+
+
+def extract_deps(fname, legal_deps):
+  "Extract the headers this file includes."
+  deps = { }
+  for line in open(fname).readlines():
+    if line[:8] != '#include':
+      continue
+    inc = _re_include.match(line).group(1)
+    if inc in legal_deps.keys():
+      deps[inc] = legal_deps[inc]
+  return deps
+_re_include = re.compile('#include *["<](.*)[">]')
+
+
+def resolve_deps(header_deps):
+  "Alter the provided dictionary to flatten includes-of-includes."
+  altered = 1
+  while altered:
+    altered = 0
+    for hdr, deps in header_deps.items():
+      # print hdr, deps
+      start = len(deps)
+      for dep in deps.keys():
+        deps.update(header_deps.get(dep, {}))
+      if len(deps) != start:
+        altered = 1
+
+def clean_path(path):
+    return path.replace("\\", "/")
+
+def get_files(patterns):
+  files = [ ]
+  for pat in string.split(patterns):
+    files.extend(map(clean_path, glob.glob(pat)))
+  files.sort()
+  return files
+
+
+if __name__ == '__main__':
+  main()