import sys import os REMOVE_THESE = ["-I/usr/include", "-I/usr/include/", "-L/usr/lib", "-L/usr/lib/"] class Pkg: def __init__(self, pkg_name): self.name = pkg_name self.priority = 0 self.vars = {} def parse(self, pkg_config_path): f = None for pkg_path in pkg_config_path.split(':'): if pkg_path[-1] != '/': pkg_path += '/' fname = pkg_path + self.name + '.pc' try: f = open(fname, "r") break except: continue if not f: #sys.stderr.write("pkgconfig.py: unable to find %s.pc in %s\n" % (self.name, pkg_config_path)) return False for line in f.readlines(): line = line.strip() if not line: continue if line[0]=='#': continue pos1 = line.find('=') pos2 = line.find(':') if pos1 > 0 and (pos1 < pos2 or pos2 < 0): pos = pos1 elif pos2 > 0 and (pos2 < pos1 or pos1 < 0): pos = pos2 else: continue name = line[:pos].lower() value = line[pos+1:] self.vars[name] = value f.close() for name in self.vars.keys(): value = self.vars[name] while True: pos1 = value.find("${") if pos1 < 0: break pos2 = value.find("}") if pos2 < 0: break value = value.replace(value[pos1:pos2+1], self.vars[value[pos1+2:pos2]]) self.vars[name] = value return True def requires(self): if not 'requires' in self.vars: return [] deps = [] req_list = self.vars['requires'] for req_item in req_list.split(','): req_item = req_item.strip() for i in range(len(req_item)): if "=<>".find(req_item[i]) >= 0: deps.append(req_item[:i].strip()) break return deps def libs(self): if not 'libs' in self.vars: return [] return self.vars['libs'].split(' ') def cflags(self): if not 'cflags' in self.vars: return [] return self.vars['cflags'].split(' ') def calculate_pkg_priority(pkg, pkg_dict, loop_cnt): if loop_cnt > 10: sys.stderr.write("Circular dependency with pkg %s\n" % (pkg)) return 0 reqs = pkg.requires() prio = 1 for req in reqs: if not req in pkg_dict: continue req_pkg = pkg_dict[req] prio += calculate_pkg_priority(req_pkg, pkg_dict, loop_cnt+1) return prio if __name__ == "__main__": pkg_names = [] pkg_dict = {} commands = [] exist_check = False for i in range(1,len(sys.argv)): if sys.argv[i][0] == '-': cmd = sys.argv[i] commands.append(cmd) if cmd=='--exists': exist_check = True elif cmd=="--help": print "This is not very helpful, is it" sys.exit(0) elif cmd=="--version": print "0.1" sys.exit(0) else: pkg_names.append(sys.argv[i]) # Fix search path PKG_CONFIG_PATH = os.getenv("PKG_CONFIG_PATH", "").strip() if not PKG_CONFIG_PATH: PKG_CONFIG_PATH="/usr/local/lib/pkgconfig:/usr/lib/pkgconfig" PKG_CONFIG_PATH = PKG_CONFIG_PATH.replace(";", ":") # Parse files for pkg_name in pkg_names: pkg = Pkg(pkg_name) if not pkg.parse(PKG_CONFIG_PATH): sys.exit(1) pkg_dict[pkg_name] = pkg if exist_check: sys.exit(0) # Calculate priority based on dependency for pkg_name in pkg_dict.keys(): pkg = pkg_dict[pkg_name] pkg.priority = calculate_pkg_priority(pkg, pkg_dict, 1) # Sort package based on dependency pkg_names = sorted(pkg_names, key=lambda pkg_name: pkg_dict[pkg_name].priority, reverse=True) # Get the options opts = [] for cmd in commands: if cmd=='--libs': for pkg_name in pkg_names: libs = pkg_dict[pkg_name].libs() for lib in libs: opts.append(lib) if lib[:2]=="-l": break for pkg_name in pkg_names: opts += pkg_dict[pkg_name].libs() elif cmd=='--cflags': for pkg_name in pkg_names: opts += pkg_dict[pkg_name].cflags() elif cmd[0]=='-': sys.stderr.write("pkgconfig.py: I don't know how to handle " + sys.argv[i] + "\n") filtered_opts = [] for opt in opts: opt = opt.strip() if not opt: continue if REMOVE_THESE.count(opt) != 0: continue if filtered_opts.count(opt) != 0: continue filtered_opts.append(opt) print ' '.join(filtered_opts)