1 import os 2 import glob 3 4 """ 5 One day, when this module grows up, it might actually try to fix things. 6 'apt-cache search | apt-get install' ... or a less terrifying version of 7 the same. With added distro-independant pixie dust. 8 """ 9 10 def command(cmd): 11 # this could use '/usr/bin/which', I suppose. But this seems simpler 12 for dir in os.environ['PATH'].split(':'): 13 file = os.path.join(os.path.expandvars(os.path.expanduser(dir)), cmd) 14 if os.path.exists(file): 15 return file 16 raise ValueError('Missing command: %s' % cmd) 17 18 19 def commands(*cmds): 20 results = [] 21 for cmd in cmds: 22 results.append(command(cmd)) 23 24 25 def library(lib): 26 lddirs = [] 27 # read lddirs from main ld.so.conf file 28 for line in open('/etc/ld.so.conf', 'r').readlines(): 29 if line.startswith('include '): 30 glob_pattern = line.split('include ')[1] 31 if not os.path.isabs(glob_pattern): 32 # prepend with a base path of '/etc' 33 glob_pattern = os.path.join('/etc', glob_pattern) 34 glob_result = glob.glob(glob_pattern) 35 for conf_file in glob_result: 36 for conf_file_line in open(conf_file, 'r').readlines(): 37 if os.path.isdir(conf_file_line): 38 lddirs.append(conf_file_line) 39 else: 40 if os.path.isdir(line): 41 lddirs.append(line.strip()) 42 43 lddirs = set(lddirs) 44 lddirs = list(lddirs) 45 46 for dir in ['/lib', '/usr/lib', '/lib64', '/usr/lib64'] + lddirs: 47 file = os.path.join(dir, lib) 48 if os.path.exists(file): 49 return file 50 raise ValueError('Missing library: %s' % lib) 51 52 53 def libraries(*libs): 54 results = [] 55 for lib in libs: 56 results.append(library(lib)) 57 58 59 def header(hdr): 60 for dir in ['/usr/include', '/usr/local/include']: 61 file = os.path.join(dir, hdr) 62 if os.path.exists(file): 63 return file 64 raise ValueError('Missing header: %s' % hdr) 65 66 67 def headers(*hdrs): 68 results = [] 69 for hdr in hdrs: 70 results.append(header(hdr)) 71
