Mercurial > hg > octave-kai > gnulib-hg
annotate lib/progname.c @ 12112:e375e45551a4
Fix a misleading comment.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Sun, 04 Oct 2009 12:08:17 +0200 |
| parents | 341123ec9461 |
| children | 281617eccdf5 |
| rev | line source |
|---|---|
| 4603 | 1 /* Program name management. |
| 11011 | 2 Copyright (C) 2001-2003, 2005-2009 Free Software Foundation, Inc. |
| 4603 | 3 Written by Bruno Haible <haible@clisp.cons.org>, 2001. |
| 4 | |
|
9309
bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
7470
diff
changeset
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5 This program is free software: you can redistribute it and/or modify |
| 4603 | 6 it under the terms of the GNU General Public License as published by |
|
9309
bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
7470
diff
changeset
|
7 the Free Software Foundation; either version 3 of the License, or |
|
bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
7470
diff
changeset
|
8 (at your option) any later version. |
| 4603 | 9 |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
|
9309
bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
7470
diff
changeset
|
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 4603 | 17 |
| 18 | |
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7304
1c4ed7637c24
Include <config.h> unconditionally.
Bruno Haible <bruno@clisp.org>
parents:
6259
diff
changeset
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19 #include <config.h> |
| 4603 | 20 |
| 21 /* Specification. */ | |
|
7470
7138ae14facc
Make it possible to #define set_program_name to an alias.
Bruno Haible <bruno@clisp.org>
parents:
7304
diff
changeset
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22 #undef ENABLE_RELOCATABLE /* avoid defining set_program_name as a macro */ |
| 4603 | 23 #include "progname.h" |
| 24 | |
|
11897
341123ec9461
progname: also set global program_invocation_name, when possible.
Jim Meyering <meyering@redhat.com>
parents:
11011
diff
changeset
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25 #include <errno.h> /* get program_invocation_name declaration */ |
| 4603 | 26 #include <string.h> |
| 27 | |
| 28 | |
| 29 /* String containing name the program is called with. | |
| 30 To be initialized by main(). */ | |
|
5630
bff122f8ce16
Fix a link error on MacOS X.
Bruno Haible <bruno@clisp.org>
parents:
4606
diff
changeset
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31 const char *program_name = NULL; |
| 4603 | 32 |
| 33 /* Set program_name, based on argv[0]. */ | |
| 34 void | |
| 35 set_program_name (const char *argv0) | |
| 36 { | |
| 37 /* libtool creates a temporary executable whose name is sometimes prefixed | |
| 38 with "lt-" (depends on the platform). It also makes argv[0] absolute. | |
| 11011 | 39 But the name of the temporary executable is a detail that should not be |
| 40 visible to the end user and to the test suite. | |
| 4603 | 41 Remove this "<dirname>/.libs/" or "<dirname>/.libs/lt-" prefix here. */ |
| 42 const char *slash; | |
| 43 const char *base; | |
| 44 | |
| 45 slash = strrchr (argv0, '/'); | |
| 46 base = (slash != NULL ? slash + 1 : argv0); | |
|
9539
97082c49805f
Work around circular library issue when cross-compiling.
Eric Blake <ebb9@byu.net>
parents:
9309
diff
changeset
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47 if (base - argv0 >= 7 && strncmp (base - 7, "/.libs/", 7) == 0) |
|
9577
0b6c2edb43b3
Don't strip off a leading "lt-" prefix outside a .libs directory.
Bruno Haible <bruno@clisp.org>
parents:
9539
diff
changeset
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48 { |
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0b6c2edb43b3
Don't strip off a leading "lt-" prefix outside a .libs directory.
Bruno Haible <bruno@clisp.org>
parents:
9539
diff
changeset
|
49 argv0 = base; |
|
0b6c2edb43b3
Don't strip off a leading "lt-" prefix outside a .libs directory.
Bruno Haible <bruno@clisp.org>
parents:
9539
diff
changeset
|
50 if (strncmp (base, "lt-", 3) == 0) |
|
0b6c2edb43b3
Don't strip off a leading "lt-" prefix outside a .libs directory.
Bruno Haible <bruno@clisp.org>
parents:
9539
diff
changeset
|
51 argv0 = base + 3; |
|
0b6c2edb43b3
Don't strip off a leading "lt-" prefix outside a .libs directory.
Bruno Haible <bruno@clisp.org>
parents:
9539
diff
changeset
|
52 } |
| 11011 | 53 |
| 54 /* But don't strip off a leading <dirname>/ in general, because when the user | |
| 55 runs | |
| 56 /some/hidden/place/bin/cp foo foo | |
| 57 he should get the error message | |
| 58 /some/hidden/place/bin/cp: `foo' and `foo' are the same file | |
| 59 not | |
| 60 cp: `foo' and `foo' are the same file | |
| 61 */ | |
| 62 | |
| 4603 | 63 program_name = argv0; |
|
11897
341123ec9461
progname: also set global program_invocation_name, when possible.
Jim Meyering <meyering@redhat.com>
parents:
11011
diff
changeset
|
64 |
| 12112 | 65 /* On glibc systems, the error() function comes from libc and uses the |
| 66 variable program_invocation_name, not program_name. So set this variable | |
| 67 as well. */ | |
|
11897
341123ec9461
progname: also set global program_invocation_name, when possible.
Jim Meyering <meyering@redhat.com>
parents:
11011
diff
changeset
|
68 #if HAVE_DECL_PROGRAM_INVOCATION_NAME |
|
341123ec9461
progname: also set global program_invocation_name, when possible.
Jim Meyering <meyering@redhat.com>
parents:
11011
diff
changeset
|
69 program_invocation_name = (char *) argv0; |
|
341123ec9461
progname: also set global program_invocation_name, when possible.
Jim Meyering <meyering@redhat.com>
parents:
11011
diff
changeset
|
70 #endif |
| 4603 | 71 } |