Greg Ward | 1190ee3 | 1998-12-18 23:46:33 +0000 | [diff] [blame] | 1 | """Prototype sysconfig module that loads information when run as a script, |
| 2 | but only defines constants when imported. |
| 3 | |
| 4 | This should be run as a script as one of the last steps of the Python |
| 5 | installation process. |
| 6 | |
| 7 | Written by: Fred L. Drake, Jr. |
| 8 | Email: <fdrake@acm.org> |
| 9 | Initial date: 17-Dec-1998 |
| 10 | """ |
| 11 | |
| 12 | __version__ = "$Revision$" |
| 13 | |
| 14 | |
| 15 | def _init_posix(): |
| 16 | import os |
| 17 | import re |
Greg Ward | 3c8e54b | 1998-12-22 12:42:04 +0000 | [diff] [blame^] | 18 | import string |
Greg Ward | 1190ee3 | 1998-12-18 23:46:33 +0000 | [diff] [blame] | 19 | import sys |
| 20 | |
| 21 | g = globals() |
| 22 | |
| 23 | version = sys.version[:3] |
| 24 | config_dir = os.path.join( |
| 25 | sys.exec_prefix, "lib", "python" + version, "config") |
| 26 | |
| 27 | # load the installed config.h: |
| 28 | define_rx = re.compile("#define ([A-Z][A-Z0-9_]+) (.*)\n") |
| 29 | undef_rx = re.compile("/[*] #undef ([A-Z][A-Z0-9_]+) [*]/\n") |
| 30 | fp = open(os.path.join(config_dir, "config.h")) |
| 31 | |
| 32 | while 1: |
| 33 | line = fp.readline() |
| 34 | if not line: |
| 35 | break |
| 36 | m = define_rx.match(line) |
| 37 | if m: |
| 38 | n, v = m.group(1, 2) |
Greg Ward | 3c8e54b | 1998-12-22 12:42:04 +0000 | [diff] [blame^] | 39 | try: v = string.atoi(v) |
| 40 | except ValueError: pass |
| 41 | g[n] = v |
Greg Ward | 1190ee3 | 1998-12-18 23:46:33 +0000 | [diff] [blame] | 42 | else: |
| 43 | m = undef_rx.match(line) |
| 44 | if m: |
| 45 | g[m.group(1)] = 0 |
| 46 | |
| 47 | # load the installed Makefile.pre.in: |
| 48 | variable_rx = re.compile("([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)\n") |
| 49 | done = {} |
| 50 | notdone = {} |
| 51 | fp = open(os.path.join(config_dir, "Makefile")) |
| 52 | |
| 53 | while 1: |
| 54 | line = fp.readline() |
| 55 | if not line: |
| 56 | break |
| 57 | m = variable_rx.match(line) |
| 58 | if m: |
| 59 | n, v = m.group(1, 2) |
Greg Ward | 3c8e54b | 1998-12-22 12:42:04 +0000 | [diff] [blame^] | 60 | v = string.strip(v) |
Greg Ward | 1190ee3 | 1998-12-18 23:46:33 +0000 | [diff] [blame] | 61 | if "$" in v: |
| 62 | notdone[n] = v |
| 63 | else: |
Greg Ward | 3c8e54b | 1998-12-22 12:42:04 +0000 | [diff] [blame^] | 64 | try: v = string.atoi(v) |
| 65 | except ValueError: pass |
Greg Ward | 1190ee3 | 1998-12-18 23:46:33 +0000 | [diff] [blame] | 66 | done[n] = v |
| 67 | |
| 68 | # do variable interpolation here |
| 69 | findvar1_rx = re.compile(r"\$\(([A-Za-z][A-Za-z0-9_]*)\)") |
| 70 | findvar2_rx = re.compile(r"\${([A-Za-z][A-Za-z0-9_]*)}") |
| 71 | while notdone: |
| 72 | for name in notdone.keys(): |
| 73 | value = notdone[name] |
| 74 | m = findvar1_rx.search(value) |
| 75 | if not m: |
| 76 | m = findvar2_rx.search(value) |
| 77 | if m: |
| 78 | n = m.group(1) |
| 79 | if done.has_key(n): |
| 80 | after = value[m.end():] |
| 81 | value = value[:m.start()] + done[n] + after |
| 82 | if "$" in after: |
| 83 | notdone[name] = value |
| 84 | else: |
Greg Ward | 3c8e54b | 1998-12-22 12:42:04 +0000 | [diff] [blame^] | 85 | try: value = string.atoi(value) |
| 86 | except ValueError: pass |
| 87 | done[name] = string.strip(value) |
Greg Ward | 1190ee3 | 1998-12-18 23:46:33 +0000 | [diff] [blame] | 88 | del notdone[name] |
| 89 | elif notdone.has_key(n): |
| 90 | # get it on a subsequent round |
| 91 | pass |
| 92 | else: |
| 93 | done[n] = "" |
| 94 | after = value[m.end():] |
| 95 | value = value[:m.start()] + after |
| 96 | if "$" in after: |
| 97 | notdone[name] = value |
| 98 | else: |
Greg Ward | 3c8e54b | 1998-12-22 12:42:04 +0000 | [diff] [blame^] | 99 | try: value = string.atoi(value) |
| 100 | except ValueError: pass |
| 101 | done[name] = string.strip(value) |
Greg Ward | 1190ee3 | 1998-12-18 23:46:33 +0000 | [diff] [blame] | 102 | del notdone[name] |
| 103 | else: |
Greg Ward | 3c8e54b | 1998-12-22 12:42:04 +0000 | [diff] [blame^] | 104 | # bogus variable reference; just drop it since we can't deal |
Greg Ward | 1190ee3 | 1998-12-18 23:46:33 +0000 | [diff] [blame] | 105 | del notdone[name] |
| 106 | |
| 107 | # save the results in the global dictionary |
| 108 | g.update(done) |
| 109 | |
| 110 | |
| 111 | import os |
| 112 | exec "_init_%s()" % os.name |
| 113 | del os |
| 114 | del _init_posix |