1/* Program name management. 2 Copyright (C) 2001-2003, 2005-2006 Free Software Foundation, Inc. 3 Written by Bruno Haible <haible@clisp.cons.org>, 2001. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 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 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18 19#include <config.h> 20 21/* Specification. */ 22#undef ENABLE_RELOCATABLE /* avoid defining set_program_name as a macro */ 23#include "progname.h" 24 25#include <string.h> 26 27 28/* String containing name the program is called with. 29 To be initialized by main(). */ 30const char *program_name = NULL; 31 32/* Set program_name, based on argv[0]. */ 33void 34set_program_name (const char *argv0) 35{ 36 /* libtool creates a temporary executable whose name is sometimes prefixed 37 with "lt-" (depends on the platform). It also makes argv[0] absolute. 38 Remove this "<dirname>/.libs/" or "<dirname>/.libs/lt-" prefix here. */ 39 const char *slash; 40 const char *base; 41 42 slash = strrchr (argv0, '/'); 43 base = (slash != NULL ? slash + 1 : argv0); 44 if (base - argv0 >= 7 && memcmp (base - 7, "/.libs/", 7) == 0) 45 argv0 = base; 46 if (strncmp (base, "lt-", 3) == 0) 47 argv0 = base + 3; 48 program_name = argv0; 49} 50