source: gpfs_3.1_ker2.6.20/lpp/mmfs/src/config/configure @ 16

Last change on this file since 16 was 16, checked in by rock, 16 years ago
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1#!/usr/bin/perl -w
2# IBM_PROLOG_BEGIN_TAG
3# This is an automatically generated prolog.
4# 
5# 
6# 
7# Licensed Materials - Property of IBM
8# 
9# (C) COPYRIGHT International Business Machines Corp. 2005,2006
10# All Rights Reserved
11# 
12# US Government Users Restricted Rights - Use, duplication or
13# disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
14# 
15# IBM_PROLOG_END_TAG
16#-------------------------------------------------------------------------------
17# Items that may be overridden:
18#   - GPFS source location -- Does not require any knowledge of the system
19#                             configurable parameters.
20#   - OS Kernel headers    -- Does not necessarily preclude the automatically
21#     determined system configuration (but the implications of specifying them
22#     indicates a mismatch with automatically determinable items).
23#-------------------------------------------------------------------------------
24
25#-------------------------------------------------------------------------------
26# function: usage
27#
28# This function displays the usage for the auto-configuration program.
29#-------------------------------------------------------------------------------
30sub usage()
31{
32  # Obtain invoked program name
33  $program = `basename $0`;
34  chomp($program);
35
36  # Display full syntax description
37  print "\nUsage: ${program} [--help] [sharkcloneroot=<dir>]\n";
38  print "\nOptions:\n";
39  print "\n    --help";
40  print "\n           Display ${program} help and exit.\n";
41  print "\n    sharkcloneroot=<dir>";
42  print "\n           Specify the location of the source tree to configure.";
43  print "\n           If not specified, check the SHARKCLONEROOT environment";
44  print "\n           variable. If neither is specifiec, default to the GPL";
45  print "\n           source directory /usr/lpp/mmfs/src.\n";
46}
47
48#-------------------------------------------------------------------------------
49# function: get_OS
50#
51# This function determines the target Operating System.
52#-------------------------------------------------------------------------------
53sub get_OS()
54{
55  local ($os);
56  local ($gpfs_os);
57
58  $os = `uname`;
59  if ($os =~ "AIX")
60  {
61    $gpfs_os = "GPFS_AIX";
62  }
63  elsif ($os =~ "Linux")
64  {
65    $gpfs_os = "GPFS_LINUX";
66  }
67  else
68  {
69    $gpfs_os = "UNSUPPORTED";
70  }
71
72  return($gpfs_os);
73}
74
75#-------------------------------------------------------------------------------
76# function: get_Architecture
77#
78# This function determines the target hardware architecture.
79#-------------------------------------------------------------------------------
80sub get_Architecture()
81{
82  local ($arch);
83  local ($gpfs_arch);
84
85  $arch = `uname -m`;
86  if ($arch =~ /^ia64$/)
87  {
88    $gpfs_arch = "GPFS_ARCH_IA64";
89  }
90  elsif ($arch =~ /^i\d86$/)
91  {
92    $gpfs_arch = "GPFS_ARCH_I386";
93  }
94  elsif ($arch =~ /^ppc$/)
95  {
96    $gpfs_arch = "GPFS_ARCH_POWER";
97  }
98  elsif ($arch =~ /^ppc64$/)
99  {
100    $gpfs_arch = "GPFS_ARCH_PPC64";
101  }
102  elsif ($arch =~ /^x86_64$/)
103  {
104    $gpfs_arch = "GPFS_ARCH_X86_64";
105  }
106  else
107  {
108    $gpfs_arch = "UNSUPPORTED";
109  }
110
111  return($gpfs_arch);
112}
113
114#-------------------------------------------------------------------------------
115# function: get_DistValues
116#
117# This function determines the target Linux distribution values.
118#-------------------------------------------------------------------------------
119sub get_DistValues()
120{
121  local ($redhat_release, $suse_release);
122  local ($dist, $dist_level, $kernel_string);
123  local($version, $release, $modification, $fix);
124  local($modification_actual, $fix_actual);
125
126  local($kernel, $kernel_actual);
127
128  $suse_release = "/etc/SuSE-release";
129  $redhat_release = "/etc/redhat-release";
130
131  # Obtain the running kernel version string
132  $kernel_string = `uname -r`;
133  chomp($kernel_string);
134  if ($kernel_string =~ /([2])\.([46]).(\d+)(.*)$/)
135  {
136    # Obtain the version, release, modification and fix level. Also obtain
137    # the "actual" modification and fix values (full, unmodified numeric only
138    # values) required for SLES 9 kernel headers.
139    $version = $1;
140    $release = $2;
141    $modification_actual = $modification = $3;
142    $fix = $4;
143
144    if ($modification > 99)
145    {
146      # Reduce modification to two digits to fit format string.
147      $modification = 99;
148    }
149    if ($fix =~ /^.(\d+)([.-])(\d+)([.-])(\d+)/)
150    {
151      # Fix level utilizes a multi-numeric format "." or "-" separated.
152      $fix = $1;
153      $fix_actual = $1 . $2 . $3 . $4 . $5;
154    }
155    elsif ($fix =~ /^([.-])(\d+)([.-])(\d+)/)
156    {
157      # Fix level utilizes a multi-numeric format "." or "-" separated.
158      $fix = $2;
159      $fix_actual = $1 . $2 . $3 . $4;
160    }
161    elsif ($fix =~ /^-(\d+)/)
162    {
163      # Fix level utilizes a single-numeric format.
164      $fix_actual = $fix = $1;
165    }
166    else
167    {
168      # No fix level in format; assign one to fit format string.
169      $fix = "00";
170    }
171    if ($fix > 99)
172    {
173      # Reduce fix to two digits to fit format string.
174      $fix = 99;
175    }
176    $kernel = sprintf("%01d%02d%02d%02d", $version, $release, $modification,
177                         $fix);
178    $kernel_actual = sprintf("%d.%d.%d-%s", $version, $release,
179                                $modification_actual, $fix_actual);
180  }
181  else
182  {
183    die("Cannot parse kernel version $kernel_string\n");
184  } 
185
186  # DES: Fix this...if we do NOT do alternate configurations
187  # If the requested build is for the local machine, then we can determine the
188  # following information from local files. Otherwise, the user will have to
189  # provide that information.
190  if (-f $suse_release)
191  {
192    # SuSE Release
193    $dist = "SUSE_LINUX";
194    $dist_level = "80";
195    open(RELFILE, $suse_release) || die "Cannot open $suse_release";
196    LINE: while ($line = <RELFILE>)
197    {
198      if ($line =~ /VERSION = (\d+)/ )
199      {
200        $dist_version = $1;
201      }
202    }
203    close(RELFILE);
204
205    # Determine the kernel headers directory
206    $lib_mod_bld_dir = "/lib/modules/$kernel_string/build/include";
207    $lib_mod_src_dir = "/lib/modules/$kernel_string/source/include";
208    $usr_src_dir = "/usr/src/linux-$kernel_actual/include";
209    if ($dist_version eq "8" && (-f "$lib_mod_bld_dir/linux/version.h"))
210    {
211      $kernel_hdr_dir = $lib_mod_bld_dir;
212      # Build directory not required for the 2.4 kernel
213      $kernel_bld_dir = "";
214    }
215    elsif ($dist_version eq "9" && (-f "$lib_mod_src_dir/linux/version.h"))
216    {
217      $kernel_hdr_dir = $lib_mod_src_dir;
218      # Build directory for the linux 2.6 kernel
219      $kernel_bld_dir = "/lib/modules/$kernel_string/build";
220    }
221    elsif ($dist_version eq "9" && (-f "$usr_src_dir/linux/version.h"))
222    {
223      $kernel_hdr_dir = $usr_src_dir;
224      # cannot guess the value in this case - let the user specify this
225      $kernel_bld_dir = "";
226    }
227    elsif ($dist_version eq "10" && (-f "$lib_mod_src_dir/linux/version.h"))
228    {
229      $kernel_hdr_dir = $lib_mod_src_dir;
230      # cannot guess the value in this case - let the user specify this
231      $kernel_bld_dir = "/lib/modules/$kernel_string/build";
232    }
233    elsif ($dist_version eq "10" && (-f "$usr_src_dir/linux/version.h"))
234    {
235      $kernel_hdr_dir = $usr_src_dir;
236      # cannot guess the value in this case - let the user specify this
237      $kernel_bld_dir = "";
238    }
239    else
240    {
241      die ("Cannot find a valid kernel include dir\n");
242    }
243
244    # ensure that the source directory has the right autoconf.h and version.h
245    # copied to it.  Due to some distro bugs this may not always be the case.
246    if ($kernel_hdr_dir ne "" && $kernel_bld_dir ne "")
247    {
248      if (system("/usr/bin/diff -q $kernel_hdr_dir/linux/version.h $kernel_bld_dir/include/linux/version.h") != 0)
249      {
250         die("Kernel source tree does not have the correct version.h file.\n",
251             "See /usr/lpp/mmfs/src/README for further information\n");
252      }
253
254      if (system("/usr/bin/diff -q $kernel_hdr_dir/linux/autoconf.h $kernel_bld_dir/include/linux/autoconf.h") != 0)
255      {
256         die("Kernel source tree does not have the correct autoconf.h file.\n",
257             "See /usr/lpp/mmfs/src/README for further information\n");
258      }
259    }
260
261  }
262  elsif (-f $redhat_release)
263  {
264    # RedHat Release
265    open(RELFILE, $redhat_release) || die "Cannot open $redhat_release";
266    LINE: while ($line = <RELFILE>)
267    {
268      if ($line =~ /Red Hat Linux release (\S+)/ )
269      {
270        $dist = "REDHAT_LINUX";
271        $dist_level = $1 eq "9" ? "90" : "80";
272      }
273      elsif ($line =~ /Red Hat Enterprise Linux/ )
274      {
275        $dist = "REDHAT_AS_LINUX";
276        $dist_level = "80";
277      }
278    }
279    close(RELFILE);
280
281    # Determine the kernel headers directory
282    $lib_mod_dir = "/lib/modules/$kernel_string/build/include";
283    $usr_src_dir = "/usr/src/linux-$kernel_string/include";
284    if (-f "$lib_mod_dir/linux/version.h")
285    {
286      $kernel_hdr_dir = $lib_mod_dir;
287      $kernel_bld_dir = "/lib/modules/$kernel_string/build";
288    }
289    elsif (-f "$usr_src_dir/linux/version.h")
290    {
291      $kernel_hdr_dir = $usr_src_dir;
292      $kernel_bld_dir = "/usr/src/linux-$kernel_string";
293    }
294    else
295    {
296      die ("Cannot find a valid kernel include dir\n");
297    }
298  }
299  else
300  {
301    $dist = "UNSUPPORTED";
302    $dist_level = "UNSUPPORTED";
303    $kernel = "UNSUPPORTED";
304    $kernel_hdr_dir = "UNSUPPORTED";
305    $kernel_bld_dir = "UNSUPPORTED";
306  }
307
308  return($dist, $dist_level, $kernel, $kernel_hdr_dir, $kernel_bld_dir);
309}
310
311#-------------------------------------------------------------------------------
312# function: write_config
313#
314# This function writes the build configuration file, combining the template and
315# the supplied configuration values.
316#-------------------------------------------------------------------------------
317sub write_config()
318{
319  local ($os, $architecture, $dist, $dist_level, $kernel);
320  local ($kernel_hdr_dir, $template_dir);
321
322  $os = shift;
323  $architecture = shift;
324  $dist = shift;
325  $dist_level = shift;
326  $kernel = shift;
327  $kernel_hdr_dir = shift;
328  $kernel_bld_dir = shift;
329  $template_dir = shift;
330
331  # Open the template and build configuration files
332  open(TEMPLATE, "$template_dir/site.mcr.proto") ||
333    die "Unable to open template file $template_dir/site.mcr.proto\n";
334  open(CONFIG, ">$template_dir/site.mcr") ||
335    die "Unable to open configuration file $template_dir/site.mcr\n";
336
337  #-----------------------------
338  # Generate configuration file
339  #-----------------------------
340  foreach $line (<TEMPLATE>)
341  {
342    # Substitute variable fields in configuration file
343    if ($line =~ m/^#define GPFS_LINUX$/)
344    {
345       $line =~ s/GPFS_LINUX$/$os/;
346    }
347    elsif ($line =~ m/^#define GPFS_ARCH_I386$/)
348    {
349       $line =~ s/GPFS_ARCH_I386$/$architecture/;
350    }
351    elsif (($line =~ m/^LINUX_DISTRIBUTION = REDHAT_LINUX$/) && ($os eq "GPFS_LINUX"))
352    {
353       $line =~ s/REDHAT_LINUX$/$dist/;
354    }
355    elsif (($line =~ m/^#define LINUX_DISTRIBUTION_LEVEL 90$/) && ($os eq "GPFS_LINUX"))
356    {
357       $line =~ s/90$/$dist_level/;
358    }
359    elsif (($line =~ m/^#define LINUX_KERNEL_VERSION 2042028$/) && ($os eq "GPFS_LINUX"))
360    {
361       $line =~ s/2042028$/$kernel/;
362    }
363    elsif (($line =~ m/^KERNEL_HEADER_DIR = \/lib\/modules\/`uname -r`\/build\/include$/) && ($os eq "GPFS_LINUX"))
364    {
365       $line =~ s/\/lib\/modules\/`uname -r`\/build\/include$/$kernel_hdr_dir/;
366    }
367    elsif (($line =~ m/^KERNEL_BUILD_DIR = \/lib\/modules\/`uname -r`\/build$/) && ($os eq "GPFS_LINUX"))
368    {
369       $line =~ s/\/lib\/modules\/`uname -r`\/build$/$kernel_bld_dir/;
370    }
371    print CONFIG "$line";
372  }
373
374  # Close the template and configuration files.
375  close(TEMPLATE);
376  close(CONFIG);
377}
378
379#-------------------------------------------------------------------------------
380# function: configure
381#
382# This function obtains the full set of build configuration values, generating
383# the configuration file from the template.
384#-------------------------------------------------------------------------------
385sub configure()
386{
387  local ($architecture, $dist, $dist_level, $kernel, $kernel_hdr_dir, $os);
388  local ($sharkcloneroot, $template_dir);
389
390  # Obtain input parameters
391  $sharkcloneroot = shift;
392
393  #------------------------
394  # Verify source location
395  #------------------------
396  if ($sharkcloneroot =~ m/^[^\/]/)
397  {
398    # Source path not fully qualified
399    print STDERR "Source path not fully qualified: $sharkcloneroot\n";
400    return(-1);
401  }
402
403  #----------------------------------------------------------------
404  # Verify build type (GPL or development) from template location.
405  #----------------------------------------------------------------
406  if (-e "$sharkcloneroot/config/site.mcr.proto")
407  {
408    $template_dir = "$sharkcloneroot/config";
409  }
410  elsif (-e "$sharkcloneroot/shark-config/site.mcr.proto")
411  {
412    $template_dir = "$sharkcloneroot/shark-config";
413  }
414  else
415  {
416    print STDERR "Missing or incomplete source at: $sharkcloneroot\n";
417    return(-1);
418  }
419
420  #-------------------------
421  # Determine the target OS
422  #-------------------------
423  $os = get_OS();
424  if ($os eq "GPFS_LINUX")
425  {
426    #---------------------------------------
427    # Determine Linux specific settings
428    #---------------------------------------
429
430    # Determine the Architecture
431    $architecture = get_Architecture();
432    if ($architecture eq "UNSUPPORTED")
433    {
434      print STDERR "Unsupported Architecture: $architecture\n";
435      $rc = -1;
436      return($rc);
437    }
438
439    # Determine the Distribution, Kernel, Kern Header Directory
440    ($dist, $dist_level, $kernel, $kernel_hdr_dir, $kernel_bld_dir) = get_DistValues();
441    if ($dist eq "UNSUPPORTED")
442    {
443      print STDERR "Unsupported Distribution: $dist\n";
444      $rc = -1;
445      return($rc);
446    }
447    if ($dist_level eq "UNSUPPORTED")
448    {
449      print STDERR "Unsupported Distribution Level: $dist_level\n";
450      $rc = -1;
451      return($rc);
452    }
453  }
454  elsif ($os eq "GPFS_AIX")
455  {
456    #---------------------------------
457    # Determine AIX specific settings
458    #
459    # NOTE: Only require architecture
460    #---------------------------------
461
462    $architecture = "GPFS_ARCH_POWER";
463  }
464  else
465  {
466    #------------------------------
467    # Unsupported Operating System
468    #------------------------------
469
470    print STDERR "Unsupported Operating System: $os\n";
471    $rc = -1;
472    exit($rc);
473  }
474
475  # If we have gotten to this point without an error occurrence, then process
476  # the site.mcr.proto and write a site.mcr file for the source code build.
477  if ($rc eq 0)
478  {
479    &write_config($os, $architecture, $dist, $dist_level, $kernel,
480                  $kernel_hdr_dir, $kernel_bld_dir, $template_dir);
481  }
482
483  return(0);
484}
485
486#-------------------------------------------------------------------------------
487# Main program
488#-------------------------------------------------------------------------------
489
490# Initialize utility variables
491$rc = 0;
492
493# Initialize core variables
494$sharkcloneroot = undef;
495
496# Process command-line arguments
497foreach $arg (sort @ARGV)
498{
499  if ($arg =~ m/^-/)
500  {
501    # Option specified
502    if ($arg eq "--help")
503    {
504      # Help requested ==> Display usage, exit success
505      usage();
506      exit(0);
507    }
508    else
509    {
510      # Unknown option ==> Display usage, exit failure
511      usage();
512      exit(1);
513    }
514  }
515  else
516  {
517    # Attribute/value pair specified
518    ($attr, $value) = split("=", $arg);
519    if ($attr eq "sharkcloneroot")
520    {
521      # Source override specified
522      if (!$sharkcloneroot)
523      {
524        $sharkcloneroot = $value;
525      }
526      else
527      {
528###     prtMsg(36, "source");
529        usage();
530        exit(1);
531      }
532    }
533    else
534    {
535      # Invalid override
536      print STDERR "Invalid override: $attr\n";
537      usage();
538      exit(1);
539    }
540  }
541}
542
543#--------------------------------------
544# Assign program defaults as necessary
545#--------------------------------------
546
547# Define the source directory. The default value may be overridden with the
548# following priority utilized:
549#     1) sharkcloneroot attribute setting supplied via command line
550#     2) SHARKCLONEROOT environment variable
551#     3) /usr/lpp/mmfs/bin default
552if (!$sharkcloneroot)
553{
554  # sharkcloneroot attribute unspecified
555  if (defined $ENV{SHARKCLONEROOT})
556  {
557    # SHARKCLONEROOT environment variable specified
558    $sharkcloneroot = $ENV{SHARKCLONEROOT};
559  }
560  else
561  {
562    # SHARKCLONEROOT environment variable unspecified
563    $sharkcloneroot = "/usr/lpp/mmfs/src";
564  }
565}
566
567#----------------------------------------------------------
568# Process the configuration; Return success/failure status
569#----------------------------------------------------------
570$rc = &configure($sharkcloneroot);
571exit($rc);
572
573#-------------------------------------------------------------------------------
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