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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 print_paths(const char *msg, char **paths, int nb_paths)

{

    int i;

    printf("%s:\n%s", msg, nb_paths ? "" : "  -\n");

    for(i = 0; i < nb_paths; i++)

        printf("  %s\n", paths[i]);

}

static void display_info(TCCState *s, int what)

{

    switch (what) {

    case 0:

        printf("tcc version %s ("

#ifdef TCC_TARGET_I386

        "i386"

#elif defined TCC_TARGET_X86_64

        "x86-64"

#elif defined TCC_TARGET_C67

        "C67"

#elif defined TCC_TARGET_ARM

        "ARM"

# ifdef TCC_ARM_HARDFLOAT

        " Hard Float"

# endif

#elif defined TCC_TARGET_ARM64

        "AArch64"

# ifdef TCC_ARM_HARDFLOAT

        " Hard Float"

# endif

#endif

#ifdef TCC_TARGET_PE

        " Windows"

#elif defined TCC_TARGET_MEOS

		" KolibriOS"

#else

        " Linux"

#endif

        ")\n", TCC_VERSION);

        break;

    case 1:

        printf("install: %s\n", s->tcc_lib_path);

        /* print_paths("programs", NULL, 0); */

        print_paths("include", s->sysinclude_paths, s->nb_sysinclude_paths);

        print_paths("libraries", s->library_paths, s->nb_library_paths);

#ifndef TCC_TARGET_PE

        print_paths("crt", s->crt_paths, s->nb_crt_paths);

        printf("elfinterp:\n  %s\n",  DEFAULT_ELFINTERP(s));

#endif

        break;

    }

}

static void help(void)

{

    printf("Tiny C Compiler "TCC_VERSION" - 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"

           "  -xc -xa     specify type of the next infile\n"

           "  -           use stdin pipe as infile\n"

           "  @listfile   read line separated arguments from 'listfile'\n"

           "Preprocessor options:\n"

           "  -Idir       add include path 'dir'\n"

           "  -Dsym[=val] define 'sym' with value 'val'\n"

           "  -Usym       undefine 'sym'\n"

           "  -E          preprocess only\n"

           "    -P[1]       no/alternative output of #line directives\n"

           "    -d{D|M}     dump defines\n"

           "    -C          keep comments\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"

           );

}

/* re-execute the i386/x86_64 cross-compilers with tcc -m32/-m64: */

#if (defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64) && !defined(TCC_TARGET_MEOS)

#ifdef _WIN32

#include 

static int execvp_win32(const char *prog, char **argv)

{

    int ret = spawnvp(P_NOWAIT, prog, (const 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");

#elif defined TCC_TARGET_MEOS

            strcat(child_name, "-kos32");

#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);

    }

}

#else

#define exec_other_tcc(s, argv, optarg)

#endif

static void gen_makedeps(TCCState *s, const char *target, const char *filename)

{

    FILE *depout;

    char buf[1024], *ext;

    int i;

    if (!filename) {

        /* compute filename automatically

         * dir/file.o -> dir/file.d             */

        pstrcpy(buf, sizeof(buf), target);

        ext = tcc_fileextension(buf);

        pstrcpy(ext, sizeof(buf) - (ext-buf), ".d");

        filename = buf;

    }

    if (s->verbose)

        printf("<- %s\n", filename);

    /* XXX return err codes instead of error() ? */

    depout = fopen(filename, "w");

    if (!depout)

        tcc_error("could not open '%s'", filename);

    fprintf(depout, "%s : \\\n", target);

    for (i=0; inb_target_deps; ++i)

        fprintf(depout, " %s \\\n", s->target_deps[i]);

    fprintf(depout, "\n");

    fclose(depout);

}

static char *default_outputfile(TCCState *s, const char *first_file)

{

    char buf[1024];

    char *ext;

    const char *name = "a";

    if (first_file && strcmp(first_file, "-"))

        name = tcc_basename(first_file);

    pstrcpy(buf, sizeof(buf), name);

    ext = tcc_fileextension(buf);

#ifdef TCC_TARGET_PE

    if (s->output_type == TCC_OUTPUT_DLL)

        strcpy(ext, ".dll");

    else

    if (s->output_type == TCC_OUTPUT_EXE)

        strcpy(ext, ".exe");

    else

#endif

    if (( (s->output_type == TCC_OUTPUT_OBJ && !s->option_r) ||

          (s->output_type == TCC_OUTPUT_PREPROCESS) )

        && *ext)

        strcpy(ext, ".o");

    else

        strcpy(buf, "a.out");

    return tcc_strdup(buf);

}

static int64_t getclock_us(void)

{

#ifdef _WIN32

    LARGE_INTEGER frequency, t1;

    QueryPerformanceFrequency(&frequency);

    QueryPerformanceCounter(&t1);

    return t1.QuadPart * 1000000LL / frequency.QuadPart;

#else

    struct timeval tv;

    gettimeofday(&tv, NULL);

    return tv.tv_sec * 1000000LL + tv.tv_usec;

#endif

}

int main(int argc, char **argv)

{

    TCCState *s;

    int ret, optind, i;

    int64_t start_time = 0;

    s = tcc_new();

    optind = tcc_parse_args(s, argc - 1, argv + 1);

    if (s->do_bench)

        start_time = getclock_us();

    tcc_set_environment(s);

    if (optind == 0) {

        help();

        return 1;

    }

    if (s->option_m)

        exec_other_tcc(s, argv, s->option_m);

    if (s->verbose)

        display_info(s, 0);

    if (s->print_search_dirs || (s->verbose == 2 && optind == 1)) {

        tcc_set_output_type(s, TCC_OUTPUT_MEMORY);

        display_info(s, 1);

        return 0;

    }

    if (s->verbose && optind == 1)

        return 0;

    if (s->nb_files == 0)

        tcc_error("no input files\n");

    /* check -c consistency : only single file handled. XXX: checks file type */

    if (s->output_type == TCC_OUTPUT_OBJ && !s->option_r) {

        if (s->nb_libraries != 0)

            tcc_error("cannot specify libraries with -c");

        /* accepts only a single input file */

        if ((s->nb_files != 1) && s->outfile) {

            tcc_error("cannot specify multiple files with -c and -o");

        }

    }

    tcc_set_output_type(s, s->output_type);

    /* compile or add each files or library */

    for(i = ret = 0; i < s->nb_files && ret == 0; i++) {

        int filetype = *(unsigned char *)s->files[i];

        const char *filename = s->files[i] + 1;

        if (filename[0] == '-' && filename[1] == 'l') {

            if (tcc_add_library(s, filename + 2) < 0) {

                /* don't fail on -lm as it's harmless to skip math lib */

                if (strcmp(filename + 2, "m")) {

                    tcc_error_noabort("cannot find library 'lib%s'", filename + 2);

                    ret = 1;

                }

            }

        } else {

            if (1 == s->verbose)

                printf("-> %s\n", filename);

            if (!s->outfile)

                s->outfile = default_outputfile(s, filename);

            if (tcc_add_file(s, filename, filetype) < 0)

                ret = 1;

            else

            if (s->output_type == TCC_OUTPUT_OBJ) {

                ret = !!tcc_output_file(s, s->outfile);

                if (s->gen_deps && !ret)

                    gen_makedeps(s, s->outfile, s->deps_outfile);

                if (!ret) {

                    if ((i+1) < s->nb_files) {

                        tcc_delete(s);

                        s = tcc_new();

                        tcc_parse_args(s, argc - 1, argv + 1);

                        tcc_set_environment(s);

                        if (s->output_type != TCC_OUTPUT_OBJ)

                            tcc_error("internal error");

                        tcc_set_output_type(s, s->output_type);

                    }

                }

            }

        }

    }

    if (0 == ret) {

        if (s->output_type == TCC_OUTPUT_MEMORY) {

#ifdef TCC_IS_NATIVE

            ret = tcc_run(s, argc - 1 - optind, argv + 1 + optind);

#else

            tcc_error_noabort("-run is not available in a cross compiler");

            ret = 1;

#endif

        } else

        if (s->output_type == TCC_OUTPUT_EXE ||

            s->output_type == TCC_OUTPUT_DLL)

        {

            ret = !!tcc_output_file(s, s->outfile);

            if (s->gen_deps && !ret)

                gen_makedeps(s, s->outfile, s->deps_outfile);

        }

    }

    if (s->do_bench)

        tcc_print_stats(s, getclock_us() - start_time);

    tcc_delete(s);

    return ret;

}