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 /* Systems which use the NeXT runtime by default should arrange 34 for the shared libgcc to be used when -fgnu-runtime is passed 35 through specs. */ 36#if defined(ENABLE_SHARED_LIBGCC) && ! defined(NEXT_OBJC_RUNTIME) 37 int i; 38 39 /* The new argument list will be contained in this. */ 40 const char **arglist; 41 42 /* True if we should add -shared-libgcc to the command-line. */ 43 int shared_libgcc = 0; 44 45 /* The total number of arguments with the new stuff. */ 46 int argc; 47 48 /* The argument list. */ 49 const char *const *argv; 50 51 argc = *in_argc; 52 argv = *in_argv; 53 54 for (i = 1; i < argc; i++) 55 { 56 if (argv[i][0] == '-') 57 { 58 if (strcmp (argv[i], "-static-libgcc") == 0 59 || strcmp (argv[i], "-static") == 0) 60 return; 61 } 62 else 63 { 64 int len; 65 66 /* If the filename ends in .m or .mi, we are compiling ObjC 67 and want to pass -shared-libgcc. */ 68 len = strlen (argv[i]); 69 if ((len > 2 && argv[i][len - 2] == '.' && argv[i][len - 1] == 'm') 70 || (len > 3 && argv[i][len - 3] == '.' && argv[i][len - 2] == 'm' 71 && argv[i][len - 1] == 'i')) 72 shared_libgcc = 1; 73 } 74 } 75 76 if (shared_libgcc) 77 { 78 /* Make sure to have room for the trailing NULL argument. */ 79 arglist = XNEWVEC (const char *, argc + 2); 80 81 i = 0; 82 do 83 { 84 arglist[i] = argv[i]; 85 i++; 86 } 87 while (i < argc); 88 89 arglist[i++] = "-shared-libgcc"; 90 91 arglist[i] = NULL; 92 93 *in_argc = i; 94 *in_argv = arglist; 95 } 96#endif 97} 98 99/* Called before linking. Returns 0 on success and -1 on failure. */ 100int 101lang_specific_pre_link (void) 102{ 103 return 0; /* Not used for C. */ 104} 105 106/* Number of extra output files that lang_specific_pre_link may generate. */ 107int lang_specific_extra_outfiles = 0; /* Not used for C. */ 108