1/* Specific flags and argument handling of the C front-end. 2 Copyright (C) 1999, 2001, 2003 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 2, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along with GCC; see the file COPYING. If not, write to the Free 18Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 1902110-1301, USA. */ 20 21#include "config.h" 22#include "system.h" 23#include "coretypes.h" 24#include "tm.h" 25#include "gcc.h" 26 27/* Filter argc and argv before processing by the gcc driver proper. */ 28void 29lang_specific_driver (int *in_argc ATTRIBUTE_UNUSED, 30 const char *const **in_argv ATTRIBUTE_UNUSED, 31 int *in_added_libraries ATTRIBUTE_UNUSED) 32{ 33#ifdef ENABLE_SHARED_LIBGCC 34 int i; 35 36 /* The new argument list will be contained in this. */ 37 const char **arglist; 38 39 /* True if we should add -shared-libgcc to the command-line. */ 40 int shared_libgcc = 0; 41 42 /* The total number of arguments with the new stuff. */ 43 int argc; 44 45 /* The argument list. */ 46 const char *const *argv; 47 48 argc = *in_argc; 49 argv = *in_argv; 50 51 for (i = 1; i < argc; i++) 52 { 53 if (argv[i][0] == '-') 54 { 55 if (strcmp (argv[i], "-static-libgcc") == 0 56 || strcmp (argv[i], "-static") == 0) 57 return; 58 } 59 else 60 { 61 int len; 62 63 /* If the filename ends in .m or .mi, we are compiling ObjC 64 and want to pass -shared-libgcc. */ 65 len = strlen (argv[i]); 66 if ((len > 2 && argv[i][len - 2] == '.' && argv[i][len - 1] == 'm') 67 || (len > 3 && argv[i][len - 3] == '.' && argv[i][len - 2] == 'm' 68 && argv[i][len - 1] == 'i')) 69 shared_libgcc = 1; 70 } 71 } 72 73 if (shared_libgcc) 74 { 75 /* Make sure to have room for the trailing NULL argument. */ 76 arglist = xmalloc ((argc+2) * sizeof (char *)); 77 78 i = 0; 79 do 80 { 81 arglist[i] = argv[i]; 82 i++; 83 } 84 while (i < argc); 85 86 arglist[i++] = "-shared-libgcc"; 87 88 arglist[i] = NULL; 89 90 *in_argc = i; 91 *in_argv = arglist; 92 } 93#endif 94} 95 96/* Called before linking. Returns 0 on success and -1 on failure. */ 97int 98lang_specific_pre_link (void) 99{ 100 return 0; /* Not used for C. */ 101} 102 103/* Number of extra output files that lang_specific_pre_link may generate. */ 104int lang_specific_extra_outfiles = 0; /* Not used for C. */ 105 106/* Table of language-specific spec functions. */ 107const struct spec_function lang_specific_spec_functions[] = 108{ 109 { 0, 0 } 110}; 111