diff options
Diffstat (limited to 'buildtools/wafsamba/samba_headers.py')
| -rw-r--r-- | buildtools/wafsamba/samba_headers.py | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/buildtools/wafsamba/samba_headers.py b/buildtools/wafsamba/samba_headers.py new file mode 100644 index 0000000000..c3d1ade710 --- /dev/null +++ b/buildtools/wafsamba/samba_headers.py @@ -0,0 +1,200 @@ +# 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 |