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-rw-r--r--buildtools/wafsamba/samba_headers.py200
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diff --git a/buildtools/wafsamba/samba_headers.py b/buildtools/wafsamba/samba_headers.py
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+++ b/buildtools/wafsamba/samba_headers.py
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+# specialist handling of header files for Samba
+
+import Build, re, Task, TaskGen
+from samba_utils import *
+
+
+def header_install_path(header, header_path):
+ '''find the installation path for a header, given a header_path option'''
+ if not header_path:
+ return ''
+ if not isinstance(header_path, list):
+ return header_path
+ for (p1, dir) in header_path:
+ for p2 in TO_LIST(p1):
+ if fnmatch.fnmatch(header, p2):
+ return dir
+ # default to current path
+ return ''
+
+
+re_header = re.compile('#include[ \t]*"([^"]+)"', re.I | re.M)
+class header_task(Task.Task):
+ """
+ The public headers (the one installed on the system) have both
+ different paths and contents, so the rename is not enough.
+
+ Intermediate .inst.h files are created because path manipulation
+ may be slow. The substitution is thus performed only once.
+ """
+
+ name = 'header'
+ color = 'PINK'
+ vars = ['INCLUDEDIR', 'HEADER_DEPS']
+
+ def run(self):
+ txt = self.inputs[0].read(self.env)
+
+ # hard-coded string, but only present in samba4 (I promise, you won't feel a thing)
+ txt = txt.replace('#if _SAMBA_BUILD_ == 4', '#if 1\n')
+
+ # use a regexp to substitute the #include lines in the files
+ map = self.generator.bld.hnodemap
+ dirnodes = self.generator.bld.hnodedirs
+ def repl(m):
+ if m.group(1):
+ s = m.group(1)
+
+ # pokemon headers: gotta catch'em all!
+ fin = s
+ if s.startswith('bin/default'):
+ node = self.generator.bld.srcnode.find_resource(s.replace('bin/default/', ''))
+ if not node:
+ Logs.warn('could not find the public header for %r' % s)
+ elif node.id in map:
+ fin = map[node.id]
+ else:
+ Logs.warn('could not find the public header replacement for build header %r' % s)
+ else:
+ # this part is more difficult since the path may be relative to anything
+ for dirnode in dirnodes:
+ node = dirnode.find_resource(s)
+ if node:
+ if node.id in map:
+ fin = map[node.id]
+ break
+ else:
+ Logs.warn('could not find the public header replacement for source header %r %r' % (s, node))
+ else:
+ Logs.warn('-> could not find the public header for %r' % s)
+
+ return "#include <%s>" % fin
+ return ''
+
+ txt = re_header.sub(repl, txt)
+
+ # and write the output file
+ f = None
+ try:
+ f = open(self.outputs[0].abspath(self.env), 'w')
+ f.write(txt)
+ finally:
+ if f:
+ f.close()
+
+@TaskGen.feature('pubh')
+def make_public_headers(self):
+ """
+ collect the public headers to process and to install, then
+ create the substitutions (name and contents)
+ """
+
+ if not self.bld.is_install:
+ # install time only (lazy)
+ return
+
+ # keep two variables
+ # hnodedirs: list of folders for searching the headers
+ # hnodemap: node ids and replacement string (node objects are unique)
+ try:
+ self.bld.hnodedirs.append(self.path)
+ except AttributeError:
+ self.bld.hnodemap = {}
+ self.bld.hnodedirs = [self.bld.srcnode, self.path]
+
+ for k in 'source4 source4/include lib/talloc lib/tevent/ source4/lib/ldb/include/'.split():
+ node = self.bld.srcnode.find_dir(k)
+ if node:
+ self.bld.hnodedirs.append(node)
+
+ header_path = getattr(self, 'header_path', None) or ''
+
+ for x in self.to_list(self.headers):
+
+ inst_path = header_install_path(x, header_path)
+
+ dest = ''
+ name = x
+ if x.find(':') != -1:
+ s = x.split(':')
+ name = s[0]
+ dest = s[1]
+
+ inn = self.path.find_resource(name)
+
+ if not inn:
+ raise ValueError("could not find the public header %r in %r" % (name, self.path))
+ out = inn.change_ext('.inst.h')
+ self.create_task('header', inn, out)
+
+ if not dest:
+ dest = inn.name
+
+ if inst_path:
+ inst_path = inst_path + '/'
+ inst_path = inst_path + dest
+
+ self.bld.install_as('${INCLUDEDIR}/%s' % inst_path, out, self.env)
+
+ self.bld.hnodemap[inn.id] = inst_path
+
+ # create a hash (not md5) to make sure the headers are re-created if something changes
+ val = 0
+ lst = list(self.bld.hnodemap.keys())
+ lst.sort()
+ for k in lst:
+ val = hash((val, k, self.bld.hnodemap[k]))
+ self.bld.env.HEADER_DEPS = val
+
+
+
+def symlink_header(task):
+ '''symlink a header in the build tree'''
+ src = task.inputs[0].abspath(task.env)
+ tgt = task.outputs[0].bldpath(task.env)
+
+ if os.path.lexists(tgt):
+ if os.path.islink(tgt) and os.readlink(tgt) == src:
+ return
+ os.unlink(tgt)
+ os.symlink(src, tgt)
+
+
+def PUBLIC_HEADERS(bld, public_headers, header_path=None):
+ '''install some headers
+
+ header_path may either be a string that is added to the INCLUDEDIR,
+ or it can be a dictionary of wildcard patterns which map to destination
+ directories relative to INCLUDEDIR
+ '''
+ bld.SET_BUILD_GROUP('final')
+ ret = bld(features=['pubh'], headers=public_headers, header_path=header_path)
+
+ if bld.env.build_public_headers:
+ # when build_public_headers is set, symlink the headers into the include/public
+ # directory
+ for h in TO_LIST(public_headers):
+ inst_path = header_install_path(h, header_path)
+ if h.find(':') != -1:
+ s = h.split(":")
+ h_name = s[0]
+ inst_name = s[1]
+ else:
+ h_name = h
+ inst_name = os.path.basename(h)
+ relpath1 = os_path_relpath(bld.srcnode.abspath(), bld.curdir)
+ relpath2 = os_path_relpath(bld.curdir, bld.srcnode.abspath())
+ targetdir = os.path.normpath(os.path.join(relpath1, bld.env.build_public_headers, inst_path))
+ if not os.path.exists(os.path.join(bld.curdir, targetdir)):
+ raise Utils.WafError("missing source directory %s for public header %s" % (targetdir, inst_name))
+ target = os.path.join(targetdir, inst_name)
+ bld.SAMBA_GENERATOR('HEADER_%s/%s' % (relpath2, inst_name),
+ rule=symlink_header,
+ source=h_name,
+ target=target)
+ if not bld.env.public_headers_list:
+ bld.env.public_headers_list = []
+ bld.env.public_headers_list.append(os.path.join(inst_path, inst_name))
+
+ return ret
+Build.BuildContext.PUBLIC_HEADERS = PUBLIC_HEADERS