lol

1 files changed, 2248 insertions, 0 deletions

diff --git a/tinycc/libtcc.c b/tinycc/libtcc.c
new file mode 100644
index 0000000..0f6ebe5
--- /dev/null
+++ b/tinycc/libtcc.c
@@ -0,0 +1,2248 @@
+/*
+ *  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
+ */
+
+#if !defined ONE_SOURCE || ONE_SOURCE
+#include "tccpp.c"
+#include "tccgen.c"
+#include "tccdbg.c"
+#include "tccasm.c"
+#include "tccelf.c"
+#include "tccrun.c"
+#ifdef TCC_TARGET_I386
+#include "i386-gen.c"
+#include "i386-link.c"
+#include "i386-asm.c"
+#elif defined(TCC_TARGET_ARM)
+#include "arm-gen.c"
+#include "arm-link.c"
+#include "arm-asm.c"
+#elif defined(TCC_TARGET_ARM64)
+#include "arm64-gen.c"
+#include "arm64-link.c"
+#include "arm-asm.c"
+#elif defined(TCC_TARGET_C67)
+#include "c67-gen.c"
+#include "c67-link.c"
+#include "tcccoff.c"
+#elif defined(TCC_TARGET_X86_64)
+#include "x86_64-gen.c"
+#include "x86_64-link.c"
+#include "i386-asm.c"
+#elif defined(TCC_TARGET_RISCV64)
+#include "riscv64-gen.c"
+#include "riscv64-link.c"
+#include "riscv64-asm.c"
+#else
+#error unknown target
+#endif
+#ifdef TCC_TARGET_PE
+#include "tccpe.c"
+#endif
+#ifdef TCC_TARGET_MACHO
+#include "tccmacho.c"
+#endif
+#endif /* ONE_SOURCE */
+
+#include "tcc.h"
+
+/********************************************************/
+/* global variables */
+
+/* XXX: get rid of this ASAP (or maybe not) */
+ST_DATA struct TCCState *tcc_state;
+TCC_SEM(static tcc_compile_sem);
+/* an array of pointers to memory to be free'd after errors */
+ST_DATA void** stk_data;
+ST_DATA int nb_stk_data;
+
+/********************************************************/
+#ifdef _WIN32
+ST_FUNC char *normalize_slashes(char *path)
+{
+    char *p;
+    for (p = path; *p; ++p)
+        if (*p == '\\')
+            *p = '/';
+    return path;
+}
+
+#if defined LIBTCC_AS_DLL && !defined CONFIG_TCCDIR
+static HMODULE tcc_module;
+BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
+{
+    if (DLL_PROCESS_ATTACH == dwReason)
+        tcc_module = hDll;
+    return TRUE;
+}
+#else
+#define tcc_module NULL /* NULL means executable itself */
+#endif
+
+#ifndef CONFIG_TCCDIR
+/* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
+static inline char *config_tccdir_w32(char *path)
+{
+    char temp[1024];
+    char try[1024];
+    char *p;
+    int c;
+    GetModuleFileName(tcc_module, path, MAX_PATH);
+    p = tcc_basename(normalize_slashes(strlwr(path)));
+    if (p > path)
+        --p;
+
+    *p = 0;
+
+    /*
+     * See if we are perhaps in a "bin/" subfolder of the
+     * installation path, in which case the real root of
+     * the installation is one level up. We can test this
+     * by looking for the 'include' folder.
+     */
+    strncpy(temp, path, sizeof(temp)-1);
+    strcat(temp, "/include");
+
+    if (_access(temp, 0) != 0) {
+        /* No 'include' folder found, so go up one level. */
+        strncpy(temp, path, sizeof(temp)-1);
+
+        /* Try this for several "levels" up. */
+        for (c = 0; c < 4; c++) {
+                p = tcc_basename(temp);
+                if (p > temp) {
+                    --p;
+                    *p = '\0';
+                }
+
+                strncpy(try, temp, sizeof(try)-1);
+                strcat(try, "/include");
+
+                if (_access(try, 0) == 0) {
+                        if (p != NULL)
+                                p = '\0';
+                        strcpy(path, temp);
+                        break;
+                }
+        }
+    }
+
+    return path;
+}
+#define CONFIG_TCCDIR config_tccdir_w32(alloca(MAX_PATH))
+#endif
+
+#ifdef TCC_TARGET_PE
+static void tcc_add_systemdir(TCCState *s)
+{
+    char buf[1000];
+    GetSystemDirectory(buf, sizeof buf);
+    tcc_add_library_path(s, normalize_slashes(buf));
+}
+#endif
+#endif
+
+/********************************************************/
+#if CONFIG_TCC_SEMLOCK
+#if defined _WIN32
+ST_FUNC void wait_sem(TCCSem *p)
+{
+    if (!p->init)
+        InitializeCriticalSection(&p->cr), p->init = 1;
+    EnterCriticalSection(&p->cr);
+}
+ST_FUNC void post_sem(TCCSem *p)
+{
+    LeaveCriticalSection(&p->cr);
+}
+#elif defined __APPLE__
+/* Half-compatible MacOS doesn't have non-shared (process local)
+   semaphores.  Use the dispatch framework for lightweight locks.  */
+ST_FUNC void wait_sem(TCCSem *p)
+{
+    if (!p->init)
+        p->sem = dispatch_semaphore_create(1), p->init = 1;
+    dispatch_semaphore_wait(p->sem, DISPATCH_TIME_FOREVER);
+}
+ST_FUNC void post_sem(TCCSem *p)
+{
+    dispatch_semaphore_signal(p->sem);
+}
+#else
+ST_FUNC void wait_sem(TCCSem *p)
+{
+    if (!p->init)
+        sem_init(&p->sem, 0, 1), p->init = 1;
+    while (sem_wait(&p->sem) < 0 && errno == EINTR);
+}
+ST_FUNC void post_sem(TCCSem *p)
+{
+    sem_post(&p->sem);
+}
+#endif
+#endif
+
+PUB_FUNC void tcc_enter_state(TCCState *s1)
+{
+    if (s1->error_set_jmp_enabled)
+        return;
+    WAIT_SEM(&tcc_compile_sem);
+    tcc_state = s1;
+}
+
+PUB_FUNC void tcc_exit_state(TCCState *s1)
+{
+    if (s1->error_set_jmp_enabled)
+        return;
+    tcc_state = NULL;
+    POST_SEM(&tcc_compile_sem);
+}
+
+/********************************************************/
+/* copy a string and truncate it. */
+ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
+{
+    char *q, *q_end;
+    int c;
+
+    if (buf_size > 0) {
+        q = buf;
+        q_end = buf + buf_size - 1;
+        while (q < q_end) {
+            c = *s++;
+            if (c == '\0')
+                break;
+            *q++ = c;
+        }
+        *q = '\0';
+    }
+    return buf;
+}
+
+/* strcat and truncate. */
+ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s)
+{
+    size_t len;
+    len = strlen(buf);
+    if (len < buf_size)
+        pstrcpy(buf + len, buf_size - len, s);
+    return buf;
+}
+
+ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
+{
+    memcpy(out, in, num);
+    out[num] = '\0';
+    return out;
+}
+
+/* extract the basename of a file */
+PUB_FUNC char *tcc_basename(const char *name)
+{
+    char *p = strchr(name, 0);
+    while (p > name && !IS_DIRSEP(p[-1]))
+        --p;
+    return p;
+}
+
+/* extract extension part of a file
+ *
+ * (if no extension, return pointer to end-of-string)
+ */
+PUB_FUNC char *tcc_fileextension (const char *name)
+{
+    char *b = tcc_basename(name);
+    char *e = strrchr(b, '.');
+    return e ? e : strchr(b, 0);
+}
+
+ST_FUNC char *tcc_load_text(int fd)
+{
+    int len = lseek(fd, 0, SEEK_END);
+    char *buf = load_data(fd, 0, len + 1);
+    buf[len] = 0;
+    return buf;
+}
+
+/********************************************************/
+/* memory management */
+
+#undef free
+#undef malloc
+#undef realloc
+
+void mem_error(const char *msg)
+{
+    fprintf(stderr, "%s\n", msg);
+    exit (1);
+}
+
+#ifndef MEM_DEBUG
+
+PUB_FUNC void tcc_free(void *ptr)
+{
+    free(ptr);
+}
+
+PUB_FUNC void *tcc_malloc(unsigned long size)
+{
+    void *ptr;
+    ptr = malloc(size);
+    if (!ptr && size)
+        mem_error("memory full (malloc)");
+    return ptr;
+}
+
+PUB_FUNC void *tcc_mallocz(unsigned long size)
+{
+    void *ptr;
+    ptr = tcc_malloc(size);
+    if (size)
+        memset(ptr, 0, size);
+    return ptr;
+}
+
+PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
+{
+    void *ptr1;
+    ptr1 = realloc(ptr, size);
+    if (!ptr1 && size)
+        mem_error("memory full (realloc)");
+    return ptr1;
+}
+
+PUB_FUNC char *tcc_strdup(const char *str)
+{
+    char *ptr;
+    ptr = tcc_malloc(strlen(str) + 1);
+    strcpy(ptr, str);
+    return ptr;
+}
+
+#else
+
+#define MEM_DEBUG_MAGIC1 0xFEEDDEB1
+#define MEM_DEBUG_MAGIC2 0xFEEDDEB2
+#define MEM_DEBUG_MAGIC3 0xFEEDDEB3
+#define MEM_DEBUG_FILE_LEN 40
+#define MEM_DEBUG_CHECK3(header) \
+    ((mem_debug_header_t*)((char*)header + header->size))->magic3
+#define MEM_USER_PTR(header) \
+    ((char *)header + offsetof(mem_debug_header_t, magic3))
+#define MEM_HEADER_PTR(ptr) \
+    (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
+
+struct mem_debug_header {
+    unsigned magic1;
+    unsigned size;
+    struct mem_debug_header *prev;
+    struct mem_debug_header *next;
+    int line_num;
+    char file_name[MEM_DEBUG_FILE_LEN + 1];
+    unsigned magic2;
+    ALIGNED(16) unsigned char magic3[4];
+};
+
+typedef struct mem_debug_header mem_debug_header_t;
+
+TCC_SEM(static mem_sem);
+static mem_debug_header_t *mem_debug_chain;
+static unsigned mem_cur_size;
+static unsigned mem_max_size;
+static int nb_states;
+
+static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
+{
+    mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
+    if (header->magic1 != MEM_DEBUG_MAGIC1 ||
+        header->magic2 != MEM_DEBUG_MAGIC2 ||
+        read32le(MEM_DEBUG_CHECK3(header)) != MEM_DEBUG_MAGIC3 ||
+        header->size == (unsigned)-1) {
+        fprintf(stderr, "%s check failed\n", msg);
+        if (header->magic1 == MEM_DEBUG_MAGIC1)
+            fprintf(stderr, "%s:%u: block allocated here.\n",
+                header->file_name, header->line_num);
+        exit(1);
+    }
+    return header;
+}
+
+PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
+{
+    int ofs;
+    mem_debug_header_t *header;
+
+    header = malloc(sizeof(mem_debug_header_t) + size);
+    if (!header)
+        mem_error("memory full (malloc)");
+
+    header->magic1 = MEM_DEBUG_MAGIC1;
+    header->magic2 = MEM_DEBUG_MAGIC2;
+    header->size = size;
+    write32le(MEM_DEBUG_CHECK3(header), MEM_DEBUG_MAGIC3);
+    header->line_num = line;
+    ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
+    strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
+    header->file_name[MEM_DEBUG_FILE_LEN] = 0;
+
+    WAIT_SEM(&mem_sem);
+    header->next = mem_debug_chain;
+    header->prev = NULL;
+    if (header->next)
+        header->next->prev = header;
+    mem_debug_chain = header;
+    mem_cur_size += size;
+    if (mem_cur_size > mem_max_size)
+        mem_max_size = mem_cur_size;
+    POST_SEM(&mem_sem);
+
+    return MEM_USER_PTR(header);
+}
+
+PUB_FUNC void tcc_free_debug(void *ptr)
+{
+    mem_debug_header_t *header;
+    if (!ptr)
+        return;
+    header = malloc_check(ptr, "tcc_free");
+
+    WAIT_SEM(&mem_sem);
+    mem_cur_size -= header->size;
+    header->size = (unsigned)-1;
+    if (header->next)
+        header->next->prev = header->prev;
+    if (header->prev)
+        header->prev->next = header->next;
+    if (header == mem_debug_chain)
+        mem_debug_chain = header->next;
+    POST_SEM(&mem_sem);
+    free(header);
+}
+
+PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
+{
+    void *ptr;
+    ptr = tcc_malloc_debug(size,file,line);
+    memset(ptr, 0, size);
+    return ptr;
+}
+
+PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
+{
+    mem_debug_header_t *header;
+    int mem_debug_chain_update = 0;
+    if (!ptr)
+        return tcc_malloc_debug(size, file, line);
+    header = malloc_check(ptr, "tcc_realloc");
+
+    WAIT_SEM(&mem_sem);
+    mem_cur_size -= header->size;
+    mem_debug_chain_update = (header == mem_debug_chain);
+    header = realloc(header, sizeof(mem_debug_header_t) + size);
+    if (!header)
+        mem_error("memory full (realloc)");
+    header->size = size;
+    write32le(MEM_DEBUG_CHECK3(header), MEM_DEBUG_MAGIC3);
+    if (header->next)
+        header->next->prev = header;
+    if (header->prev)
+        header->prev->next = header;
+    if (mem_debug_chain_update)
+        mem_debug_chain = header;
+    mem_cur_size += size;
+    if (mem_cur_size > mem_max_size)
+        mem_max_size = mem_cur_size;
+    POST_SEM(&mem_sem);
+
+    return MEM_USER_PTR(header);
+}
+
+PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
+{
+    char *ptr;
+    ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
+    strcpy(ptr, str);
+    return ptr;
+}
+
+PUB_FUNC void tcc_memcheck(int d)
+{
+    WAIT_SEM(&mem_sem);
+    nb_states += d;
+    if (0 == nb_states && mem_cur_size) {
+        mem_debug_header_t *header = mem_debug_chain;
+        fflush(stdout);
+        fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
+            mem_cur_size, mem_max_size);
+        while (header) {
+            fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
+                header->file_name, header->line_num, header->size);
+            header = header->next;
+        }
+        fflush(stderr);
+        mem_cur_size = 0;
+        mem_debug_chain = NULL;
+#if MEM_DEBUG-0 == 2
+        exit(2);
+#endif
+    }
+    POST_SEM(&mem_sem);
+}
+#endif /* MEM_DEBUG */
+
+#define free(p) use_tcc_free(p)
+#define malloc(s) use_tcc_malloc(s)
+#define realloc(p, s) use_tcc_realloc(p, s)
+
+/********************************************************/
+/* dynarrays */
+
+ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
+{
+    int nb, nb_alloc;
+    void **pp;
+
+    nb = *nb_ptr;
+    pp = *(void ***)ptab;
+    /* every power of two we double array size */
+    if ((nb & (nb - 1)) == 0) {
+        if (!nb)
+            nb_alloc = 1;
+        else
+            nb_alloc = nb * 2;
+        pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
+        *(void***)ptab = pp;
+    }
+    pp[nb++] = data;
+    *nb_ptr = nb;
+}
+
+ST_FUNC void dynarray_reset(void *pp, int *n)
+{
+    void **p;
+    for (p = *(void***)pp; *n; ++p, --*n)
+        if (*p)
+            tcc_free(*p);
+    tcc_free(*(void**)pp);
+    *(void**)pp = NULL;
+}
+
+static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
+{
+    const char *p;
+    do {
+        int c;
+        CString str;
+
+        cstr_new(&str);
+        for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
+            if (c == '{' && p[1] && p[2] == '}') {
+                c = p[1], p += 2;
+                if (c == 'B')
+                    cstr_cat(&str, s->tcc_lib_path, -1);
+                if (c == 'R')
+                    cstr_cat(&str, CONFIG_SYSROOT, -1);
+                if (c == 'f' && file) {
+                    /* substitute current file's dir */
+                    const char *f = file->true_filename;
+                    const char *b = tcc_basename(f);
+                    if (b > f)
+                        cstr_cat(&str, f, b - f - 1);
+                    else
+                        cstr_cat(&str, ".", 1);
+                }
+            } else {
+                cstr_ccat(&str, c);
+            }
+        }
+        if (str.size) {
+            cstr_ccat(&str, '\0');
+            dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
+        }
+        cstr_free(&str);
+        in = p+1;
+    } while (*p);
+}
+
+/********************************************************/
+/* warning / error */
+
+/* warn_... option bits */
+#define WARN_ON  1 /* warning is on (-Woption) */
+#define WARN_ERR 2 /* warning is an error (-Werror=option) */
+#define WARN_NOE 4 /* warning is not an error (-Wno-error=option) */
+
+/* error1() modes */
+enum { ERROR_WARN, ERROR_NOABORT, ERROR_ERROR };
+
+static void error1(int mode, const char *fmt, va_list ap)
+{
+    BufferedFile **pf, *f;
+    TCCState *s1 = tcc_state;
+    CString cs;
+
+    tcc_exit_state(s1);
+
+    if (mode == ERROR_WARN) {
+        if (s1->warn_error)
+            mode = ERROR_ERROR;
+        if (s1->warn_num) {
+            /* handle tcc_warning_c(warn_option)(fmt, ...) */
+            int wopt = *(&s1->warn_none + s1->warn_num);
+            s1->warn_num = 0;
+            if (0 == (wopt & WARN_ON))
+                return;
+            if (wopt & WARN_ERR)
+                mode = ERROR_ERROR;
+            if (wopt & WARN_NOE)
+                mode = ERROR_WARN;
+        }
+        if (s1->warn_none)
+            return;
+    }
+
+    cstr_new(&cs);
+    f = NULL;
+    if (s1->error_set_jmp_enabled) { /* we're called while parsing a file */
+        /* use upper file if inline ":asm:" or token ":paste:" */
+        for (f = file; f && f->filename[0] == ':'; f = f->prev)
+            ;
+    }
+    if (f) {
+        for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
+            cstr_printf(&cs, "In file included from %s:%d:\n",
+                (*pf)->filename, (*pf)->line_num - 1);
+        cstr_printf(&cs, "%s:%d: ",
+            f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
+    } else if (s1->current_filename) {
+        cstr_printf(&cs, "%s: ", s1->current_filename);
+    }
+    if (0 == cs.size)
+        cstr_printf(&cs, "tcc: ");
+    cstr_printf(&cs, mode == ERROR_WARN ? "warning: " : "error: ");
+    cstr_vprintf(&cs, fmt, ap);
+    if (!s1 || !s1->error_func) {
+        /* default case: stderr */
+        if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
+            printf("\n"); /* print a newline during tcc -E */
+        fflush(stdout); /* flush -v output */
+        fprintf(stderr, "%s\n", (char*)cs.data);
+        fflush(stderr); /* print error/warning now (win32) */
+    } else {
+        s1->error_func(s1->error_opaque, (char*)cs.data);
+    }
+    cstr_free(&cs);
+    if (mode != ERROR_WARN)
+        s1->nb_errors++;
+    if (mode == ERROR_ERROR && s1->error_set_jmp_enabled) {
+        while (nb_stk_data)
+            tcc_free(*(void**)stk_data[--nb_stk_data]);
+        longjmp(s1->error_jmp_buf, 1);
+    }
+}
+
+LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc error_func)
+{
+    s->error_opaque = error_opaque;
+    s->error_func = error_func;
+}
+
+LIBTCCAPI TCCErrorFunc tcc_get_error_func(TCCState *s)
+{
+    return s->error_func;
+}
+
+LIBTCCAPI void *tcc_get_error_opaque(TCCState *s)
+{
+    return s->error_opaque;
+}
+
+/* error without aborting current compilation */
+PUB_FUNC int _tcc_error_noabort(const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    error1(ERROR_NOABORT, fmt, ap);
+    va_end(ap);
+    return -1;
+}
+
+#undef _tcc_error
+PUB_FUNC void _tcc_error(const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    error1(ERROR_ERROR, fmt, ap);
+    exit(1);
+}
+#define _tcc_error use_tcc_error_noabort
+
+PUB_FUNC void _tcc_warning(const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    error1(ERROR_WARN, fmt, ap);
+    va_end(ap);
+}
+
+
+/********************************************************/
+/* I/O layer */
+
+ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
+{
+    BufferedFile *bf;
+    int buflen = initlen ? initlen : IO_BUF_SIZE;
+
+    bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
+    bf->buf_ptr = bf->buffer;
+    bf->buf_end = bf->buffer + initlen;
+    bf->buf_end[0] = CH_EOB; /* put eob symbol */
+    pstrcpy(bf->filename, sizeof(bf->filename), filename);
+#ifdef _WIN32
+    normalize_slashes(bf->filename);
+#endif
+    bf->true_filename = bf->filename;
+    bf->line_num = 1;
+    bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
+    bf->fd = -1;
+    bf->prev = file;
+    file = bf;
+    tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
+}
+
+ST_FUNC void tcc_close(void)
+{
+    TCCState *s1 = tcc_state;
+    BufferedFile *bf = file;
+    if (bf->fd > 0) {
+        close(bf->fd);
+        total_lines += bf->line_num - 1;
+    }
+    if (bf->true_filename != bf->filename)
+        tcc_free(bf->true_filename);
+    file = bf->prev;
+    tcc_free(bf);
+}
+
+static int _tcc_open(TCCState *s1, const char *filename)
+{
+    int fd;
+    if (strcmp(filename, "-") == 0)
+        fd = 0, filename = "<stdin>";
+    else
+        fd = open(filename, O_RDONLY | O_BINARY);
+    if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
+        printf("%s %*s%s\n", fd < 0 ? "nf":"->",
+               (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
+    return fd;
+}
+
+ST_FUNC int tcc_open(TCCState *s1, const char *filename)
+{
+    int fd = _tcc_open(s1, filename);
+    if (fd < 0)
+        return -1;
+    tcc_open_bf(s1, filename, 0);
+    file->fd = fd;
+    return 0;
+}
+
+/* compile the file opened in 'file'. Return non zero if errors. */
+static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
+{
+    /* Here we enter the code section where we use the global variables for
+       parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
+       Other threads need to wait until we're done.
+
+       Alternatively we could use thread local storage for those global
+       variables, which may or may not have advantages */
+
+    tcc_enter_state(s1);
+    s1->error_set_jmp_enabled = 1;
+
+    if (setjmp(s1->error_jmp_buf) == 0) {
+        s1->nb_errors = 0;
+
+        if (fd == -1) {
+            int len = strlen(str);
+            tcc_open_bf(s1, "<string>", len);
+            memcpy(file->buffer, str, len);
+        } else {
+            tcc_open_bf(s1, str, 0);
+            file->fd = fd;
+        }
+
+        preprocess_start(s1, filetype);
+        tccgen_init(s1);
+
+        if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
+            tcc_preprocess(s1);
+        } else {
+            tccelf_begin_file(s1);
+            if (filetype & (AFF_TYPE_ASM | AFF_TYPE_ASMPP)) {
+                tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
+            } else {
+                tccgen_compile(s1);
+            }
+            tccelf_end_file(s1);
+        }
+    }
+    tccgen_finish(s1);
+    preprocess_end(s1);
+    s1->error_set_jmp_enabled = 0;
+    tcc_exit_state(s1);
+    return s1->nb_errors != 0 ? -1 : 0;
+}
+
+LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
+{
+    return tcc_compile(s, s->filetype, str, -1);
+}
+
+/* define a preprocessor symbol. value can be NULL, sym can be "sym=val" */
+LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
+{
+    const char *eq;
+    if (NULL == (eq = strchr(sym, '=')))
+        eq = strchr(sym, 0);
+    if (NULL == value)
+        value = *eq ? eq + 1 : "1";
+    cstr_printf(&s1->cmdline_defs, "#define %.*s %s\n", (int)(eq-sym), sym, value);
+}
+
+/* undefine a preprocessor symbol */
+LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
+{
+    cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
+}
+
+
+LIBTCCAPI TCCState *tcc_new(void)
+{
+    TCCState *s;
+
+    s = tcc_mallocz(sizeof(TCCState));
+    if (!s)
+        return NULL;
+#ifdef MEM_DEBUG
+    tcc_memcheck(1);
+#endif
+
+#undef gnu_ext
+
+    s->gnu_ext = 1;
+    s->tcc_ext = 1;
+    s->nocommon = 1;
+    s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
+    s->cversion = 199901; /* default unless -std=c11 is supplied */
+    s->warn_implicit_function_declaration = 1;
+    s->warn_discarded_qualifiers = 1;
+    s->ms_extensions = 1;
+
+#ifdef CHAR_IS_UNSIGNED
+    s->char_is_unsigned = 1;
+#endif
+#ifdef TCC_TARGET_I386
+    s->seg_size = 32;
+#endif
+    /* enable this if you want symbols with leading underscore on windows: */
+#if defined TCC_TARGET_MACHO /* || defined TCC_TARGET_PE */
+    s->leading_underscore = 1;
+#endif
+#ifdef TCC_TARGET_ARM
+    s->float_abi = ARM_FLOAT_ABI;
+#endif
+#ifdef CONFIG_NEW_DTAGS
+    s->enable_new_dtags = 1;
+#endif
+    s->ppfp = stdout;
+    /* might be used in error() before preprocess_start() */
+    s->include_stack_ptr = s->include_stack;
+
+    tcc_set_lib_path(s, CONFIG_TCCDIR);
+    return s;
+}
+
+LIBTCCAPI void tcc_delete(TCCState *s1)
+{
+    /* free sections */
+    tccelf_delete(s1);
+
+    /* free library paths */
+    dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
+    dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
+
+    /* free include paths */
+    dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
+    dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
+
+    tcc_free(s1->tcc_lib_path);
+    tcc_free(s1->soname);
+    tcc_free(s1->rpath);
+    tcc_free(s1->elf_entryname);
+    tcc_free(s1->init_symbol);
+    tcc_free(s1->fini_symbol);
+    tcc_free(s1->mapfile);
+    tcc_free(s1->outfile);
+    tcc_free(s1->deps_outfile);
+#if defined TCC_TARGET_MACHO
+    tcc_free(s1->install_name);
+#endif
+    dynarray_reset(&s1->files, &s1->nb_files);
+    dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
+    dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
+    dynarray_reset(&s1->argv, &s1->argc);
+    cstr_free(&s1->cmdline_defs);
+    cstr_free(&s1->cmdline_incl);
+    cstr_free(&s1->linker_arg);
+#ifdef TCC_IS_NATIVE
+    /* free runtime memory */
+    tcc_run_free(s1);
+#endif
+    tcc_free(s1->dState);
+    tcc_free(s1);
+#ifdef MEM_DEBUG
+    tcc_memcheck(-1);
+#endif
+}
+
+LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
+{
+#ifdef CONFIG_TCC_PIE
+    if (output_type == TCC_OUTPUT_EXE)
+        output_type |= TCC_OUTPUT_DYN;
+#endif
+    s->output_type = output_type;
+
+    if (!s->nostdinc) {
+        /* default include paths */
+        /* -isystem paths have already been handled */
+        tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
+    }
+
+    if (output_type == TCC_OUTPUT_PREPROCESS) {
+        s->do_debug = 0;
+        return 0;
+    }
+
+    tccelf_new(s);
+    if (s->do_debug) {
+        /* add debug sections */
+        tcc_debug_new(s);
+    }
+#ifdef CONFIG_TCC_BCHECK
+    if (s->do_bounds_check) {
+        /* if bound checking, then add corresponding sections */
+        tccelf_bounds_new(s);
+    }
+#endif
+
+    if (output_type == TCC_OUTPUT_OBJ) {
+        /* always elf for objects */
+        s->output_format = TCC_OUTPUT_FORMAT_ELF;
+        return 0;
+    }
+
+    tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
+
+#ifdef TCC_TARGET_PE
+# ifdef _WIN32
+    /* allow linking with system dll's directly */
+    tcc_add_systemdir(s);
+# endif
+    /* target PE has its own startup code in libtcc1.a */
+    return 0;
+
+#elif defined TCC_TARGET_MACHO
+# ifdef TCC_IS_NATIVE
+    tcc_add_macos_sdkpath(s);
+# endif
+    /* Mach-O with LC_MAIN doesn't need any crt startup code.  */
+    return 0;
+
+#else
+    /* paths for crt objects */
+    tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
+
+    /* add libc crt1/crti objects */
+    if (output_type != TCC_OUTPUT_MEMORY && !s->nostdlib) {
+#if TARGETOS_OpenBSD
+        if (output_type != TCC_OUTPUT_DLL)
+	    tcc_add_crt(s, "crt0.o");
+        if (output_type == TCC_OUTPUT_DLL)
+            tcc_add_crt(s, "crtbeginS.o");
+        else
+            tcc_add_crt(s, "crtbegin.o");
+#elif TARGETOS_FreeBSD
+        if (output_type != TCC_OUTPUT_DLL)
+            tcc_add_crt(s, "crt1.o");
+        tcc_add_crt(s, "crti.o");
+        if (s->static_link)
+            tcc_add_crt(s, "crtbeginT.o");
+        else if (output_type & TCC_OUTPUT_DYN)
+            tcc_add_crt(s, "crtbeginS.o");
+        else
+            tcc_add_crt(s, "crtbegin.o");
+#elif TARGETOS_NetBSD
+        if (output_type != TCC_OUTPUT_DLL)
+            tcc_add_crt(s, "crt0.o");
+        tcc_add_crt(s, "crti.o");
+        if (s->static_link)
+            tcc_add_crt(s, "crtbeginT.o");
+        else if (output_type & TCC_OUTPUT_DYN)
+            tcc_add_crt(s, "crtbeginS.o");
+        else
+            tcc_add_crt(s, "crtbegin.o");
+#elif defined TARGETOS_ANDROID
+        if (output_type != TCC_OUTPUT_DLL)
+            tcc_add_crt(s, "crtbegin_dynamic.o");
+        else
+            tcc_add_crt(s, "crtbegin_so.o");
+#else
+        if (output_type != TCC_OUTPUT_DLL)
+            tcc_add_crt(s, "crt1.o");
+        tcc_add_crt(s, "crti.o");
+#endif
+    }
+    return 0;
+#endif
+}
+
+LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
+{
+    tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
+    return 0;
+}
+
+LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
+{
+    tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
+    return 0;
+}
+
+/* add/update a 'DLLReference', Just find if level == -1  */
+ST_FUNC DLLReference *tcc_add_dllref(TCCState *s1, const char *dllname, int level)
+{
+    DLLReference *ref = NULL;
+    int i;
+    for (i = 0; i < s1->nb_loaded_dlls; i++)
+        if (0 == strcmp(s1->loaded_dlls[i]->name, dllname)) {
+            ref = s1->loaded_dlls[i];
+            break;
+        }
+    if (level == -1)
+        return ref;
+    if (ref) {
+        if (level < ref->level)
+            ref->level = level;
+        ref->found = 1;
+        return ref;
+    }
+    ref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
+    strcpy(ref->name, dllname);
+    dynarray_add(&s1->loaded_dlls, &s1->nb_loaded_dlls, ref);
+    ref->level = level;
+    ref->index = s1->nb_loaded_dlls;
+    return ref;
+}
+
+/* OpenBSD: choose latest from libxxx.so.x.y versions */
+#if defined TARGETOS_OpenBSD && !defined _WIN32
+#include <glob.h>
+static int tcc_glob_so(TCCState *s1, const char *pattern, char *buf, int size)
+{
+    const char *star;
+    glob_t g;
+    char *p;
+    int i, v, v1, v2, v3;
+
+    star = strchr(pattern, '*');
+    if (!star || glob(pattern, 0, NULL, &g))
+        return -1;
+    for (v = -1, i = 0; i < g.gl_pathc; ++i) {
+        p = g.gl_pathv[i];
+        if (2 != sscanf(p + (star - pattern), "%d.%d.%d", &v1, &v2, &v3))
+            continue;
+        if ((v1 = v1 * 1000 + v2) > v)
+            v = v1, pstrcpy(buf, size, p);
+    }
+    globfree(&g);
+    return v;
+}
+#endif
+
+ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
+{
+    int fd, ret = -1;
+
+#if defined TARGETOS_OpenBSD && !defined _WIN32
+    char buf[1024];
+    if (tcc_glob_so(s1, filename, buf, sizeof buf) >= 0)
+        filename = buf;
+#endif
+
+    /* ignore binary files with -E */
+    if (s1->output_type == TCC_OUTPUT_PREPROCESS
+        && (flags & AFF_TYPE_BIN))
+        return 0;
+
+    /* open the file */
+    fd = _tcc_open(s1, filename);
+    if (fd < 0) {
+        if (flags & AFF_PRINT_ERROR)
+            tcc_error_noabort("file '%s' not found", filename);
+        return ret;
+    }
+
+    s1->current_filename = filename;
+    if (flags & AFF_TYPE_BIN) {
+        ElfW(Ehdr) ehdr;
+        int obj_type;
+
+        obj_type = tcc_object_type(fd, &ehdr);
+        lseek(fd, 0, SEEK_SET);
+
+        switch (obj_type) {
+
+        case AFF_BINTYPE_REL:
+            ret = tcc_load_object_file(s1, fd, 0);
+            break;
+
+        case AFF_BINTYPE_AR:
+            ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
+            break;
+
+#ifdef TCC_TARGET_PE
+        default:
+            ret = pe_load_file(s1, fd, filename);
+            goto check_success;
+
+#elif defined TCC_TARGET_MACHO
+        case AFF_BINTYPE_DYN:
+        case_dyn_or_tbd:
+            if (s1->output_type == TCC_OUTPUT_MEMORY) {
+#ifdef TCC_IS_NATIVE
+                void* dl;
+                const char* soname = filename;
+                if (obj_type != AFF_BINTYPE_DYN)
+                    soname = macho_tbd_soname(filename);
+                dl = dlopen(soname, RTLD_GLOBAL | RTLD_LAZY);
+                if (dl)
+                    tcc_add_dllref(s1, soname, 0)->handle = dl, ret = 0;
+	        if (filename != soname)
+		    tcc_free((void *)soname);
+#endif
+            } else if (obj_type == AFF_BINTYPE_DYN) {
+                ret = macho_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
+            } else {
+                ret = macho_load_tbd(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
+            }
+            break;
+        default:
+        {
+            const char *ext = tcc_fileextension(filename);
+            if (!strcmp(ext, ".tbd"))
+                goto case_dyn_or_tbd;
+            if (!strcmp(ext, ".dylib")) {
+                obj_type = AFF_BINTYPE_DYN;
+                goto case_dyn_or_tbd;
+            }
+            goto check_success;
+        }
+
+#else /* unix */
+        case AFF_BINTYPE_DYN:
+            if (s1->output_type == TCC_OUTPUT_MEMORY) {
+#ifdef TCC_IS_NATIVE
+                void* dl = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
+                if (dl)
+                    tcc_add_dllref(s1, filename, 0)->handle = dl, ret = 0;
+#endif
+            } else
+                ret = tcc_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
+            break;
+
+        default:
+            /* as GNU ld, consider it is an ld script if not recognized */
+            ret = tcc_load_ldscript(s1, fd);
+            goto check_success;
+
+#endif /* pe / macos / unix */
+
+check_success:
+            if (ret < 0)
+                tcc_error_noabort("%s: unrecognized file type", filename);
+            break;
+
+#ifdef TCC_TARGET_COFF
+        case AFF_BINTYPE_C67:
+            ret = tcc_load_coff(s1, fd);
+            break;
+#endif
+        }
+        close(fd);
+    } else {
+        /* update target deps */
+        dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
+        ret = tcc_compile(s1, flags, filename, fd);
+    }
+    s1->current_filename = NULL;
+    return ret;
+}
+
+LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
+{
+    int filetype = s->filetype;
+    if (0 == (filetype & AFF_TYPE_MASK)) {
+        /* use a file extension to detect a filetype */
+        const char *ext = tcc_fileextension(filename);
+        if (ext[0]) {
+            ext++;
+            if (!strcmp(ext, "S"))
+                filetype = AFF_TYPE_ASMPP;
+            else if (!strcmp(ext, "s"))
+                filetype = AFF_TYPE_ASM;
+            else if (!PATHCMP(ext, "c")
+                     || !PATHCMP(ext, "h")
+                     || !PATHCMP(ext, "i"))
+                filetype = AFF_TYPE_C;
+            else
+                filetype |= AFF_TYPE_BIN;
+        } else {
+            filetype = AFF_TYPE_C;
+        }
+    }
+    return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
+}
+
+LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
+{
+    tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
+    return 0;
+}
+
+static int tcc_add_library_internal(TCCState *s, const char *fmt,
+    const char *filename, int flags, char **paths, int nb_paths)
+{
+    char buf[1024];
+    int i;
+
+    for(i = 0; i < nb_paths; i++) {
+        snprintf(buf, sizeof(buf), fmt, paths[i], filename);
+        if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
+            return 0;
+    }
+    return -1;
+}
+
+/* find and load a dll. Return non zero if not found */
+ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
+{
+    return tcc_add_library_internal(s, "%s/%s", filename, flags,
+        s->library_paths, s->nb_library_paths);
+}
+
+/* find [cross-]libtcc1.a and tcc helper objects in library path */
+ST_FUNC void tcc_add_support(TCCState *s1, const char *filename)
+{
+    char buf[100];
+    if (CONFIG_TCC_CROSSPREFIX[0])
+        filename = strcat(strcpy(buf, CONFIG_TCC_CROSSPREFIX), filename);
+    if (tcc_add_dll(s1, filename, 0) < 0)
+        tcc_error_noabort("%s not found", filename);
+}
+
+#if !defined TCC_TARGET_PE && !defined TCC_TARGET_MACHO
+ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
+{
+    if (-1 == tcc_add_library_internal(s1, "%s/%s",
+        filename, 0, s1->crt_paths, s1->nb_crt_paths))
+        return tcc_error_noabort("file '%s' not found", filename);
+    return 0;
+}
+#endif
+
+/* the library name is the same as the argument of the '-l' option */
+LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
+{
+#if defined TCC_TARGET_PE
+    static const char * const libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
+    const char * const *pp = s->static_link ? libs + 4 : libs;
+#elif defined TCC_TARGET_MACHO
+    static const char * const libs[] = { "%s/lib%s.dylib", "%s/lib%s.tbd", "%s/lib%s.a", NULL };
+    const char * const *pp = s->static_link ? libs + 2 : libs;
+#elif defined TARGETOS_OpenBSD
+    static const char * const libs[] = { "%s/lib%s.so.*", "%s/lib%s.a", NULL };
+    const char * const *pp = s->static_link ? libs + 1 : libs;
+#else
+    static const char * const libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
+    const char * const *pp = s->static_link ? libs + 1 : libs;
+#endif
+    int flags = s->filetype & AFF_WHOLE_ARCHIVE;
+    while (*pp) {
+        if (0 == tcc_add_library_internal(s, *pp,
+            libraryname, flags, s->library_paths, s->nb_library_paths))
+            return 0;
+        ++pp;
+    }
+    return -1;
+}
+
+PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
+{
+    int ret = tcc_add_library(s1, libname);
+    if (ret < 0)
+        tcc_error_noabort("library '%s' not found", libname);
+    return ret;
+}
+
+/* handle #pragma comment(lib,) */
+ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
+{
+    int i;
+    for (i = 0; i < s1->nb_pragma_libs; i++)
+        tcc_add_library_err(s1, s1->pragma_libs[i]);
+}
+
+LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
+{
+#ifdef TCC_TARGET_PE
+    /* On x86_64 'val' might not be reachable with a 32bit offset.
+       So it is handled here as if it were in a DLL. */
+    pe_putimport(s1, 0, name, (uintptr_t)val);
+#else
+    char buf[256];
+    if (s1->leading_underscore) {
+        buf[0] = '_';
+        pstrcpy(buf + 1, sizeof(buf) - 1, name);
+        name = buf;
+    }
+    set_global_sym(s1, name, NULL, (addr_t)(uintptr_t)val); /* NULL: SHN_ABS */
+#endif
+    return 0;
+}
+
+LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
+{
+    tcc_free(s->tcc_lib_path);
+    s->tcc_lib_path = tcc_strdup(path);
+}
+
+/********************************************************/
+/* options parser */
+
+static int strstart(const char *val, const char **str)
+{
+    const char *p, *q;
+    p = *str;
+    q = val;
+    while (*q) {
+        if (*p != *q)
+            return 0;
+        p++;
+        q++;
+    }
+    *str = p;
+    return 1;
+}
+
+/* Like strstart, but automatically takes into account that ld options can
+ *
+ * - start with double or single dash (e.g. '--soname' or '-soname')
+ * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
+ *   or '-Wl,-soname=x.so')
+ *
+ * you provide `val` always in 'option[=]' form (no leading -)
+ */
+static int link_option(const char *str, const char *val, const char **ptr)
+{
+    const char *p, *q;
+    int ret;
+
+    /* there should be 1 or 2 dashes */
+    if (*str++ != '-')
+        return 0;
+    if (*str == '-')
+        str++;
+
+    /* then str & val should match (potentially up to '=') */
+    p = str;
+    q = val;
+
+    ret = 1;
+    if (q[0] == '?') {
+        ++q;
+        if (strstart("no-", &p))
+            ret = -1;
+    }
+
+    while (*q != '\0' && *q != '=') {
+        if (*p != *q)
+            return 0;
+        p++;
+        q++;
+    }
+
+    /* '=' near eos means ',' or '=' is ok */
+    if (*q == '=') {
+        if (*p == 0)
+            *ptr = p;
+        if (*p != ',' && *p != '=')
+            return 0;
+        p++;
+    } else if (*p) {
+        return 0;
+    }
+    *ptr = p;
+    return ret;
+}
+
+static const char *skip_linker_arg(const char **str)
+{
+    const char *s1 = *str;
+    const char *s2 = strchr(s1, ',');
+    *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
+    return s2;
+}
+
+static void copy_linker_arg(char **pp, const char *s, int sep)
+{
+    const char *q = s;
+    char *p = *pp;
+    int l = 0;
+    if (p && sep)
+        p[l = strlen(p)] = sep, ++l;
+    skip_linker_arg(&q);
+    pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
+}
+
+static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
+{
+    struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
+    f->type = filetype;
+    strcpy(f->name, filename);
+    dynarray_add(&s->files, &s->nb_files, f);
+}
+
+/* set linker options */
+static int tcc_set_linker(TCCState *s, const char *option)
+{
+    TCCState *s1 = s;
+    while (*option) {
+
+        const char *p = NULL;
+        char *end = NULL;
+        int ignoring = 0;
+        int ret;
+
+        if (link_option(option, "Bsymbolic", &p)) {
+            s->symbolic = 1;
+        } else if (link_option(option, "nostdlib", &p)) {
+            s->nostdlib = 1;
+        } else if (link_option(option, "e=", &p)
+               ||  link_option(option, "entry=", &p)) {
+            copy_linker_arg(&s->elf_entryname, p, 0);
+        } else if (link_option(option, "fini=", &p)) {
+            copy_linker_arg(&s->fini_symbol, p, 0);
+            ignoring = 1;
+        } else if (link_option(option, "image-base=", &p)
+                || link_option(option, "Ttext=", &p)) {
+            s->text_addr = strtoull(p, &end, 16);
+            s->has_text_addr = 1;
+        } else if (link_option(option, "init=", &p)) {
+            copy_linker_arg(&s->init_symbol, p, 0);
+            ignoring = 1;
+        } else if (link_option(option, "Map=", &p)) {
+            copy_linker_arg(&s->mapfile, p, 0);
+            ignoring = 1;
+        } else if (link_option(option, "oformat=", &p)) {
+#if defined(TCC_TARGET_PE)
+            if (strstart("pe-", &p)) {
+#elif PTR_SIZE == 8
+            if (strstart("elf64-", &p)) {
+#else
+            if (strstart("elf32-", &p)) {
+#endif
+                s->output_format = TCC_OUTPUT_FORMAT_ELF;
+            } else if (!strcmp(p, "binary")) {
+                s->output_format = TCC_OUTPUT_FORMAT_BINARY;
+#ifdef TCC_TARGET_COFF
+            } else if (!strcmp(p, "coff")) {
+                s->output_format = TCC_OUTPUT_FORMAT_COFF;
+#endif
+            } else
+                goto err;
+
+        } else if (link_option(option, "as-needed", &p)) {
+            ignoring = 1;
+        } else if (link_option(option, "O", &p)) {
+            ignoring = 1;
+        } else if (link_option(option, "export-all-symbols", &p)) {
+            s->rdynamic = 1;
+        } else if (link_option(option, "export-dynamic", &p)) {
+            s->rdynamic = 1;
+        } else if (link_option(option, "rpath=", &p)) {
+            copy_linker_arg(&s->rpath, p, ':');
+        } else if (link_option(option, "enable-new-dtags", &p)) {
+            s->enable_new_dtags = 1;
+        } else if (link_option(option, "section-alignment=", &p)) {
+            s->section_align = strtoul(p, &end, 16);
+        } else if (link_option(option, "soname=", &p)) {
+            copy_linker_arg(&s->soname, p, 0);
+        } else if (link_option(option, "install_name=", &p)) {
+            copy_linker_arg(&s->soname, p, 0);
+#ifdef TCC_TARGET_PE
+        } else if (link_option(option, "large-address-aware", &p)) {
+            s->pe_characteristics |= 0x20;
+        } else if (link_option(option, "file-alignment=", &p)) {
+            s->pe_file_align = strtoul(p, &end, 16);
+        } else if (link_option(option, "stack=", &p)) {
+            s->pe_stack_size = strtoul(p, &end, 10);
+        } else if (link_option(option, "subsystem=", &p)) {
+#if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
+            if (!strcmp(p, "native")) {
+                s->pe_subsystem = 1;
+            } else if (!strcmp(p, "console")) {
+                s->pe_subsystem = 3;
+            } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
+                s->pe_subsystem = 2;
+            } else if (!strcmp(p, "posix")) {
+                s->pe_subsystem = 7;
+            } else if (!strcmp(p, "efiapp")) {
+                s->pe_subsystem = 10;
+            } else if (!strcmp(p, "efiboot")) {
+                s->pe_subsystem = 11;
+            } else if (!strcmp(p, "efiruntime")) {
+                s->pe_subsystem = 12;
+            } else if (!strcmp(p, "efirom")) {
+                s->pe_subsystem = 13;
+#elif defined(TCC_TARGET_ARM)
+            if (!strcmp(p, "wince")) {
+                s->pe_subsystem = 9;
+#endif
+            } else
+                goto err;
+#endif
+#ifdef TCC_TARGET_MACHO
+        } else if (link_option(option, "all_load", &p)) {
+	    s->filetype |= AFF_WHOLE_ARCHIVE;
+        } else if (link_option(option, "force_load", &p)) {
+	    s->filetype |= AFF_WHOLE_ARCHIVE;
+            args_parser_add_file(s, p, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
+            s->nb_libraries++;
+        } else if (link_option(option, "single_module", &p)) {
+            ignoring = 1;
+#endif
+        } else if (ret = link_option(option, "?whole-archive", &p), ret) {
+            if (ret > 0)
+                s->filetype |= AFF_WHOLE_ARCHIVE;
+            else
+                s->filetype &= ~AFF_WHOLE_ARCHIVE;
+        } else if (link_option(option, "z=", &p)) {
+            ignoring = 1;
+        } else if (p) {
+            return 0;
+        } else {
+    err:
+            return tcc_error_noabort("unsupported linker option '%s'", option);
+        }
+        if (ignoring)
+            tcc_warning_c(warn_unsupported)("unsupported linker option '%s'", option);
+        option = skip_linker_arg(&p);
+    }
+    return 1;
+}
+
+typedef struct TCCOption {
+    const char *name;
+    uint16_t index;
+    uint16_t flags;
+} TCCOption;
+
+enum {
+    TCC_OPTION_ignored = 0,
+    TCC_OPTION_HELP,
+    TCC_OPTION_HELP2,
+    TCC_OPTION_v,
+    TCC_OPTION_I,
+    TCC_OPTION_D,
+    TCC_OPTION_U,
+    TCC_OPTION_P,
+    TCC_OPTION_L,
+    TCC_OPTION_B,
+    TCC_OPTION_l,
+    TCC_OPTION_bench,
+    TCC_OPTION_bt,
+    TCC_OPTION_b,
+    TCC_OPTION_ba,
+    TCC_OPTION_g,
+    TCC_OPTION_c,
+    TCC_OPTION_dumpversion,
+    TCC_OPTION_d,
+    TCC_OPTION_static,
+    TCC_OPTION_std,
+    TCC_OPTION_shared,
+    TCC_OPTION_soname,
+    TCC_OPTION_o,
+    TCC_OPTION_r,
+    TCC_OPTION_Wl,
+    TCC_OPTION_Wp,
+    TCC_OPTION_W,
+    TCC_OPTION_O,
+    TCC_OPTION_mfloat_abi,
+    TCC_OPTION_m,
+    TCC_OPTION_f,
+    TCC_OPTION_isystem,
+    TCC_OPTION_iwithprefix,
+    TCC_OPTION_include,
+    TCC_OPTION_nostdinc,
+    TCC_OPTION_nostdlib,
+    TCC_OPTION_print_search_dirs,
+    TCC_OPTION_rdynamic,
+    TCC_OPTION_pthread,
+    TCC_OPTION_run,
+    TCC_OPTION_w,
+    TCC_OPTION_E,
+    TCC_OPTION_M,
+    TCC_OPTION_MD,
+    TCC_OPTION_MF,
+    TCC_OPTION_MM,
+    TCC_OPTION_MMD,
+    TCC_OPTION_x,
+    TCC_OPTION_ar,
+    TCC_OPTION_impdef,
+    TCC_OPTION_dynamiclib,
+    TCC_OPTION_flat_namespace,
+    TCC_OPTION_two_levelnamespace,
+    TCC_OPTION_undefined,
+    TCC_OPTION_install_name,
+    TCC_OPTION_compatibility_version ,
+    TCC_OPTION_current_version,
+};
+
+#define TCC_OPTION_HAS_ARG 0x0001
+#define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
+
+static const TCCOption tcc_options[] = {
+    { "h", TCC_OPTION_HELP, 0 },
+    { "-help", TCC_OPTION_HELP, 0 },
+    { "?", TCC_OPTION_HELP, 0 },
+    { "hh", TCC_OPTION_HELP2, 0 },
+    { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
+    { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
+    { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
+    { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
+    { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
+    { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
+    { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
+    { "bench", TCC_OPTION_bench, 0 },
+#ifdef CONFIG_TCC_BACKTRACE
+    { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+#endif
+#ifdef CONFIG_TCC_BCHECK
+    { "b", TCC_OPTION_b, 0 },
+#endif
+    { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+#ifdef TCC_TARGET_MACHO
+    { "compatibility_version", TCC_OPTION_compatibility_version, TCC_OPTION_HAS_ARG },
+    { "current_version", TCC_OPTION_current_version, TCC_OPTION_HAS_ARG },
+#endif
+    { "c", TCC_OPTION_c, 0 },
+#ifdef TCC_TARGET_MACHO
+    { "dynamiclib", TCC_OPTION_dynamiclib, 0 },
+#endif
+    { "dumpversion", TCC_OPTION_dumpversion, 0},
+    { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "static", TCC_OPTION_static, 0 },
+    { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "shared", TCC_OPTION_shared, 0 },
+    { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
+    { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
+    { "pthread", TCC_OPTION_pthread, 0},
+    { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "rdynamic", TCC_OPTION_rdynamic, 0 },
+    { "r", TCC_OPTION_r, 0 },
+    { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+#ifdef TCC_TARGET_ARM
+    { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
+#endif
+    { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+#ifdef TCC_TARGET_MACHO
+    { "flat_namespace", TCC_OPTION_flat_namespace, 0 },
+#endif
+    { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
+    { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
+    { "nostdinc", TCC_OPTION_nostdinc, 0 },
+    { "nostdlib", TCC_OPTION_nostdlib, 0 },
+    { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
+    { "w", TCC_OPTION_w, 0 },
+    { "E", TCC_OPTION_E, 0},
+    { "M", TCC_OPTION_M, 0},
+    { "MD", TCC_OPTION_MD, 0},
+    { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
+    { "MM", TCC_OPTION_MM, 0},
+    { "MMD", TCC_OPTION_MMD, 0},
+    { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
+    { "ar", TCC_OPTION_ar, 0},
+#ifdef TCC_TARGET_PE
+    { "impdef", TCC_OPTION_impdef, 0},
+#endif
+#ifdef TCC_TARGET_MACHO
+    { "install_name", TCC_OPTION_install_name, TCC_OPTION_HAS_ARG },
+    { "two_levelnamespace", TCC_OPTION_two_levelnamespace, 0 },
+    { "undefined", TCC_OPTION_undefined, TCC_OPTION_HAS_ARG },
+#endif
+    /* ignored (silently, except after -Wunsupported) */
+    { "arch", 0, TCC_OPTION_HAS_ARG},
+    { "C", 0, 0 },
+    { "-param", 0, TCC_OPTION_HAS_ARG },
+    { "pedantic", 0, 0 },
+    { "pipe", 0, 0 },
+    { "s", 0, 0 },
+    { "traditional", 0, 0 },
+    { NULL, 0, 0 },
+};
+
+typedef struct FlagDef {
+    uint16_t offset;
+    uint16_t flags;
+    const char *name;
+} FlagDef;
+
+#define WD_ALL    0x0001 /* warning is activated when using -Wall */
+#define FD_INVERT 0x0002 /* invert value before storing */
+
+static const FlagDef options_W[] = {
+    { offsetof(TCCState, warn_all), WD_ALL, "all" },
+    { offsetof(TCCState, warn_error), 0, "error" },
+    { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
+    { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
+    { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL, "implicit-function-declaration" },
+    { offsetof(TCCState, warn_discarded_qualifiers), WD_ALL, "discarded-qualifiers" },
+    { 0, 0, NULL }
+};
+
+static const FlagDef options_f[] = {
+    { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
+    { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
+    { offsetof(TCCState, nocommon), FD_INVERT, "common" },
+    { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
+    { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
+    { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
+    { offsetof(TCCState, test_coverage), 0, "test-coverage" },
+    { 0, 0, NULL }
+};
+
+static const FlagDef options_m[] = {
+    { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
+#ifdef TCC_TARGET_X86_64
+    { offsetof(TCCState, nosse), FD_INVERT, "sse" },
+#endif
+    { 0, 0, NULL }
+};
+
+static int set_flag(TCCState *s, const FlagDef *flags, const char *name)
+{
+    int value, mask, ret;
+    const FlagDef *p;
+    const char *r;
+    unsigned char *f;
+
+    r = name, value = !strstart("no-", &r), mask = 0;
+
+    /* when called with options_W, look for -W[no-]error=<option> */
+    if ((flags->flags & WD_ALL) && strstart("error=", &r))
+        value = value ? WARN_ON|WARN_ERR : WARN_NOE, mask = WARN_ON;
+
+    for (ret = -1, p = flags; p->name; ++p) {
+        if (ret) {
+            if (strcmp(r, p->name))
+                continue;
+        } else {
+            if (0 == (p->flags & WD_ALL))
+                continue;
+        }
+
+        f = (unsigned char *)s + p->offset;
+        *f = (*f & mask) | (value ^ !!(p->flags & FD_INVERT));
+
+        if (ret) {
+            ret = 0;
+            if (strcmp(r, "all"))
+                break;
+        }
+    }
+    return ret;
+}
+
+static int args_parser_make_argv(const char *r, int *argc, char ***argv)
+{
+    int ret = 0, q, c;
+    CString str;
+    for(;;) {
+        while (c = (unsigned char)*r, c && c <= ' ')
+          ++r;
+        if (c == 0)
+            break;
+        q = 0;
+        cstr_new(&str);
+        while (c = (unsigned char)*r, c) {
+            ++r;
+            if (c == '\\' && (*r == '"' || *r == '\\')) {
+                c = *r++;
+            } else if (c == '"') {
+                q = !q;
+                continue;
+            } else if (q == 0 && c <= ' ') {
+                break;
+            }
+            cstr_ccat(&str, c);
+        }
+        cstr_ccat(&str, 0);
+        //printf("<%s>\n", str.data), fflush(stdout);
+        dynarray_add(argv, argc, tcc_strdup(str.data));
+        cstr_free(&str);
+        ++ret;
+    }
+    return ret;
+}
+
+/* read list file */
+static int args_parser_listfile(TCCState *s,
+    const char *filename, int optind, int *pargc, char ***pargv)
+{
+    TCCState *s1 = s;
+    int fd, i;
+    char *p;
+    int argc = 0;
+    char **argv = NULL;
+
+    fd = open(filename, O_RDONLY | O_BINARY);
+    if (fd < 0)
+        return tcc_error_noabort("listfile '%s' not found", filename);
+
+    p = tcc_load_text(fd);
+    for (i = 0; i < *pargc; ++i)
+        if (i == optind)
+            args_parser_make_argv(p, &argc, &argv);
+        else
+            dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
+
+    tcc_free(p);
+    dynarray_reset(&s->argv, &s->argc);
+    *pargc = s->argc = argc, *pargv = s->argv = argv;
+    return 0;
+}
+
+#if defined TCC_TARGET_MACHO
+static uint32_t parse_version(TCCState *s1, const char *version)
+{
+    uint32_t a = 0;
+    uint32_t b = 0;
+    uint32_t c = 0;
+    char* last;
+
+    a = strtoul(version, &last, 10);
+    if (*last == '.') {
+        b = strtoul(&last[1], &last, 10);
+        if (*last == '.')
+             c = strtoul(&last[1], &last, 10);
+    }
+    if (*last || a > 0xffff || b > 0xff || c > 0xff)
+        tcc_error_noabort("version a.b.c not correct: %s", version);
+    return (a << 16) | (b << 8) | c;
+}
+#endif
+
+PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
+{
+    TCCState *s1 = s;
+    const TCCOption *popt;
+    const char *optarg, *r;
+    const char *run = NULL;
+    int x;
+    int tool = 0, arg_start = 0, noaction = optind;
+    char **argv = *pargv;
+    int argc = *pargc;
+
+    cstr_reset(&s->linker_arg);
+
+    while (optind < argc) {
+        r = argv[optind];
+        if (r[0] == '@' && r[1] != '\0') {
+            if (args_parser_listfile(s, r + 1, optind, &argc, &argv))
+                return -1;
+            continue;
+        }
+        optind++;
+        if (tool) {
+            if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
+                ++s->verbose;
+            continue;
+        }
+reparse:
+        if (r[0] != '-' || r[1] == '\0') {
+            args_parser_add_file(s, r, s->filetype);
+            if (run) {
+dorun:
+                if (tcc_set_options(s, run))
+                    return -1;
+                arg_start = optind - 1;
+                break;
+            }
+            continue;
+        }
+
+        /* allow "tcc files... -run -- args ..." */
+        if (r[1] == '-' && r[2] == '\0' && run)
+            goto dorun;
+
+        /* find option in table */
+        for(popt = tcc_options; ; ++popt) {
+            const char *p1 = popt->name;
+            const char *r1 = r + 1;
+            if (p1 == NULL)
+                return tcc_error_noabort("invalid option -- '%s'", r);
+            if (!strstart(p1, &r1))
+                continue;
+            optarg = r1;
+            if (popt->flags & TCC_OPTION_HAS_ARG) {
+                if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
+                    if (optind >= argc)
+                arg_err:
+                        return tcc_error_noabort("argument to '%s' is missing", r);
+                    optarg = argv[optind++];
+                }
+            } else if (*r1 != '\0')
+                continue;
+            break;
+        }
+
+        switch(popt->index) {
+        case TCC_OPTION_HELP:
+            x = OPT_HELP;
+            goto extra_action;
+        case TCC_OPTION_HELP2:
+            x = OPT_HELP2;
+            goto extra_action;
+        case TCC_OPTION_I:
+            tcc_add_include_path(s, optarg);
+            break;
+        case TCC_OPTION_D:
+            tcc_define_symbol(s, optarg, NULL);
+            break;
+        case TCC_OPTION_U:
+            tcc_undefine_symbol(s, optarg);
+            break;
+        case TCC_OPTION_L:
+            tcc_add_library_path(s, optarg);
+            break;
+        case TCC_OPTION_B:
+            /* set tcc utilities path (mainly for tcc development) */
+            tcc_set_lib_path(s, optarg);
+            ++noaction;
+            break;
+        case TCC_OPTION_l:
+            args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
+            s->nb_libraries++;
+            break;
+        case TCC_OPTION_pthread:
+            s->option_pthread = 1;
+            break;
+        case TCC_OPTION_bench:
+            s->do_bench = 1;
+            break;
+#ifdef CONFIG_TCC_BACKTRACE
+        case TCC_OPTION_bt:
+            s->rt_num_callers = atoi(optarg);
+            s->do_backtrace = 1;
+            s->do_debug = 1;
+	    s->dwarf = DWARF_VERSION;
+            break;
+#endif
+#ifdef CONFIG_TCC_BCHECK
+        case TCC_OPTION_b:
+            s->do_bounds_check = 1;
+            s->do_backtrace = 1;
+            s->do_debug = 1;
+	    s->dwarf = DWARF_VERSION;
+            break;
+#endif
+        case TCC_OPTION_g:
+            s->do_debug = 1;
+            s->dwarf = DWARF_VERSION;
+
+            if (strstart("dwarf", &optarg))
+                s->dwarf = (*optarg) ? (0 - atoi(optarg)) : DEFAULT_DWARF_VERSION;
+            break;
+        case TCC_OPTION_c:
+            x = TCC_OUTPUT_OBJ;
+        set_output_type:
+            if (s->output_type)
+                tcc_warning("-%s: overriding compiler action already specified", popt->name);
+            s->output_type = x;
+            break;
+        case TCC_OPTION_d:
+            if (*optarg == 'D')
+                s->dflag = 3;
+            else if (*optarg == 'M')
+                s->dflag = 7;
+            else if (*optarg == 't')
+                s->dflag = 16;
+            else if (isnum(*optarg))
+                s->g_debug |= atoi(optarg);
+            else
+                goto unsupported_option;
+            break;
+        case TCC_OPTION_static:
+            s->static_link = 1;
+            break;
+        case TCC_OPTION_std:
+            if (strcmp(optarg, "=c11") == 0)
+                s->cversion = 201112;
+            break;
+        case TCC_OPTION_shared:
+            x = TCC_OUTPUT_DLL;
+            goto set_output_type;
+        case TCC_OPTION_soname:
+            s->soname = tcc_strdup(optarg);
+            break;
+        case TCC_OPTION_o:
+            if (s->outfile) {
+                tcc_warning("multiple -o option");
+                tcc_free(s->outfile);
+            }
+            s->outfile = tcc_strdup(optarg);
+            break;
+        case TCC_OPTION_r:
+            /* generate a .o merging several output files */
+            s->option_r = 1;
+            x = TCC_OUTPUT_OBJ;
+            goto set_output_type;
+        case TCC_OPTION_isystem:
+            tcc_add_sysinclude_path(s, optarg);
+            break;
+        case TCC_OPTION_include:
+            cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
+            break;
+        case TCC_OPTION_nostdinc:
+            s->nostdinc = 1;
+            break;
+        case TCC_OPTION_nostdlib:
+            s->nostdlib = 1;
+            break;
+        case TCC_OPTION_run:
+#ifndef TCC_IS_NATIVE
+            return tcc_error_noabort("-run is not available in a cross compiler");
+#else
+            run = optarg;
+            x = TCC_OUTPUT_MEMORY;
+            goto set_output_type;
+#endif
+        case TCC_OPTION_v:
+            do ++s->verbose; while (*optarg++ == 'v');
+            ++noaction;
+            break;
+        case TCC_OPTION_f:
+            if (set_flag(s, options_f, optarg) < 0)
+                goto unsupported_option;
+            break;
+#ifdef TCC_TARGET_ARM
+        case TCC_OPTION_mfloat_abi:
+            /* tcc doesn't support soft float yet */
+            if (!strcmp(optarg, "softfp")) {
+                s->float_abi = ARM_SOFTFP_FLOAT;
+            } else if (!strcmp(optarg, "hard"))
+                s->float_abi = ARM_HARD_FLOAT;
+            else
+                return tcc_error_noabort("unsupported float abi '%s'", optarg);
+            break;
+#endif
+        case TCC_OPTION_m:
+            if (set_flag(s, options_m, optarg) < 0) {
+                if (x = atoi(optarg), x != 32 && x != 64)
+                    goto unsupported_option;
+                if (PTR_SIZE != x/8)
+                    return x;
+                ++noaction;
+            }
+            break;
+        case TCC_OPTION_W:
+            s->warn_none = 0;
+            if (optarg[0] && set_flag(s, options_W, optarg) < 0)
+                goto unsupported_option;
+            break;
+        case TCC_OPTION_w:
+            s->warn_none = 1;
+            break;
+        case TCC_OPTION_rdynamic:
+            s->rdynamic = 1;
+            break;
+        case TCC_OPTION_Wl:
+            if (s->linker_arg.size)
+                ((char*)s->linker_arg.data)[s->linker_arg.size - 1] = ',';
+            cstr_cat(&s->linker_arg, optarg, 0);
+            x = tcc_set_linker(s, s->linker_arg.data);
+            if (x)
+                cstr_reset(&s->linker_arg);
+            if (x < 0)
+                return -1;
+            break;
+        case TCC_OPTION_Wp:
+            r = optarg;
+            goto reparse;
+        case TCC_OPTION_E:
+            x = TCC_OUTPUT_PREPROCESS;
+            goto set_output_type;
+        case TCC_OPTION_P:
+            s->Pflag = atoi(optarg) + 1;
+            break;
+        case TCC_OPTION_M:
+            s->include_sys_deps = 1;
+            // fall through
+        case TCC_OPTION_MM:
+            s->just_deps = 1;
+            if(!s->deps_outfile)
+                s->deps_outfile = tcc_strdup("-");
+            // fall through
+        case TCC_OPTION_MMD:
+            s->gen_deps = 1;
+            break;
+        case TCC_OPTION_MD:
+            s->gen_deps = 1;
+            s->include_sys_deps = 1;
+            break;
+        case TCC_OPTION_MF:
+            s->deps_outfile = tcc_strdup(optarg);
+            break;
+        case TCC_OPTION_dumpversion:
+            printf ("%s\n", TCC_VERSION);
+            exit(0);
+            break;
+        case TCC_OPTION_x:
+            x = 0;
+            if (*optarg == 'c')
+                x = AFF_TYPE_C;
+            else if (*optarg == 'a')
+                x = AFF_TYPE_ASMPP;
+            else if (*optarg == 'b')
+                x = AFF_TYPE_BIN;
+            else if (*optarg == 'n')
+                x = AFF_TYPE_NONE;
+            else
+                tcc_warning("unsupported language '%s'", optarg);
+            s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
+            break;
+        case TCC_OPTION_O:
+            s->optimize = atoi(optarg);
+            break;
+        case TCC_OPTION_print_search_dirs:
+            x = OPT_PRINT_DIRS;
+            goto extra_action;
+        case TCC_OPTION_impdef:
+            x = OPT_IMPDEF;
+            goto extra_action;
+#if defined TCC_TARGET_MACHO
+        case TCC_OPTION_dynamiclib:
+            x = TCC_OUTPUT_DLL;
+            goto set_output_type;
+        case TCC_OPTION_flat_namespace:
+	     break;
+        case TCC_OPTION_two_levelnamespace:
+	     break;
+        case TCC_OPTION_undefined:
+	     break;
+        case TCC_OPTION_install_name:
+	    s->install_name = tcc_strdup(optarg);
+            break;
+        case TCC_OPTION_compatibility_version:
+	    s->compatibility_version = parse_version(s, optarg);
+            break;
+        case TCC_OPTION_current_version:
+	    s->current_version = parse_version(s, optarg);;
+            break;
+#endif
+        case TCC_OPTION_ar:
+            x = OPT_AR;
+        extra_action:
+            arg_start = optind - 1;
+            if (arg_start != noaction)
+                return tcc_error_noabort("cannot parse %s here", r);
+            tool = x;
+            break;
+        default:
+unsupported_option:
+            tcc_warning_c(warn_unsupported)("unsupported option '%s'", r);
+            break;
+        }
+    }
+    if (s->linker_arg.size) {
+        r = s->linker_arg.data;
+        goto arg_err;
+    }
+    *pargc = argc - arg_start;
+    *pargv = argv + arg_start;
+    if (tool)
+        return tool;
+    if (optind != noaction)
+        return 0;
+    if (s->verbose == 2)
+        return OPT_PRINT_DIRS;
+    if (s->verbose)
+        return OPT_V;
+    return OPT_HELP;
+}
+
+LIBTCCAPI int tcc_set_options(TCCState *s, const char *r)
+{
+    char **argv = NULL;
+    int argc = 0, ret;
+    args_parser_make_argv(r, &argc, &argv);
+    ret = tcc_parse_args(s, &argc, &argv, 0);
+    dynarray_reset(&argv, &argc);
+    return ret < 0 ? ret : 0;
+}
+
+PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
+{
+    if (!total_time)
+        total_time = 1;
+    fprintf(stderr, "# %d idents, %d lines, %u bytes\n"
+                    "# %0.3f s, %u lines/s, %0.1f MB/s\n",
+           total_idents, total_lines, total_bytes,
+           (double)total_time/1000,
+           (unsigned)total_lines*1000/total_time,
+           (double)total_bytes/1000/total_time);
+    fprintf(stderr, "# text %u, data.rw %u, data.ro %u, bss %u bytes\n",
+           s1->total_output[0],
+           s1->total_output[1],
+           s1->total_output[2],
+           s1->total_output[3]
+           );
+#ifdef MEM_DEBUG
+    fprintf(stderr, "# %d bytes memory used\n", mem_max_size);
+#endif
+}