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/*
 *  TCC - Tiny C Compiler
 * 
 *  Copyright (c) 2001-2004 Fabrice Bellard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifdef ONE_SOURCE
#include "libtcc.c"
#else
#include "tcc.h"
#endif

static void help(void)
{
    printf("tcc version " TCC_VERSION " - Tiny C Compiler - Copyright (C) 2001-2006 Fabrice Bellard\n"
           "Usage: tcc [options...] [-o outfile] [-c] infile(s)...\n"
           "       tcc [options...] -run infile [arguments...]\n"
           "General options:\n"
           "  -c          compile only - generate an object file\n"
           "  -o outfile  set output filename\n"
           "  -run        run compiled source\n"
           "  -fflag      set or reset (with 'no-' prefix) 'flag' (see man page)\n"
           "  -Wwarning   set or reset (with 'no-' prefix) 'warning' (see man page)\n"
           "  -w          disable all warnings\n"
           "  -v          show version\n"
           "  -vv         show included files (as sole argument: show search paths)\n"
           "  -dumpversion\n"
           "  -bench      show compilation statistics\n"
           "Preprocessor options:\n"
           "  -E          preprocess only\n"
           "  -Idir       add include path 'dir'\n"
           "  -Dsym[=val] define 'sym' with value 'val'\n"
           "  -Usym       undefine 'sym'\n"
           "Linker options:\n"
           "  -Ldir       add library path 'dir'\n"
           "  -llib       link with dynamic or static library 'lib'\n"
           "  -pthread    link with -lpthread and -D_REENTRANT (POSIX Linux)\n"
           "  -r          generate (relocatable) object file\n"
           "  -rdynamic   export all global symbols to dynamic linker\n"
           "  -shared     generate a shared library\n"
           "  -soname     set name for shared library to be used at runtime\n"
           "  -static     static linking\n"
           "  -Wl,-opt[=val]  set linker option (see manual)\n"
           "Debugger options:\n"
           "  -g          generate runtime debug info\n"
#ifdef CONFIG_TCC_BCHECK
           "  -b          compile with built-in memory and bounds checker (implies -g)\n"
#endif
#ifdef CONFIG_TCC_BACKTRACE
           "  -bt N       show N callers in stack traces\n"
#endif
           "Misc options:\n"
           "  -nostdinc   do not use standard system include paths\n"
           "  -nostdlib   do not link with standard crt and libraries\n"
           "  -Bdir       use 'dir' as tcc internal library and include path\n"
           "  -MD         generate target dependencies for make\n"
           "  -MF depfile put generated dependencies here\n"
           "  -norunsrc   Do not compile the file which is the first argument after -run.\n"
           );
}

/* re-execute the i386/x86_64 cross-compilers with tcc -m32/-m64: */
#if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
#ifdef _WIN32
#include <process.h>
static int execvp_win32(const char *prog, char **argv)
{
    int ret = spawnvp(P_NOWAIT, prog, (char *const*)argv);
    if (-1 == ret)
        return ret;
    cwait(&ret, ret, WAIT_CHILD);
    exit(ret);
}
#define execvp execvp_win32
#endif
static void exec_other_tcc(TCCState *s, char **argv, const char *optarg)
{
    char child_path[4096], *child_name; const char *target;
    switch (atoi(optarg)) {
#ifdef TCC_TARGET_I386
        case 32: break;
        case 64: target = "x86_64";
#else
        case 64: break;
        case 32: target = "i386";
#endif
            pstrcpy(child_path, sizeof child_path - 40, argv[0]);
            child_name = tcc_basename(child_path);
            strcpy(child_name, target);
#ifdef TCC_TARGET_PE
            strcat(child_name, "-win32");
#endif
            strcat(child_name, "-tcc");
            if (strcmp(argv[0], child_path)) {
                if (s->verbose > 0)
                    printf("tcc: using '%s'\n", child_name), fflush(stdout);
                execvp(argv[0] = child_path, argv);
            }
            tcc_error("'%s' not found", child_name);
        case 0: /* ignore -march etc. */
            break;
        default:
            tcc_warning("unsupported option \"-m%s\"", optarg);
    }
}