Revert all of my changes to directories & codingstyle.

1 files changed, 2322 insertions, 0 deletions

diff --git a/libtcc.c b/libtcc.c
new file mode 100644
index 0000000..df98bb0
--- /dev/null
+++ b/libtcc.c
@@ -0,0 +1,2322 @@
+/*
+ *  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
+ */
+
+#include "tcc.h"
+
+/********************************************************/
+/* global variables */
+
+/* use GNU C extensions */
+ST_DATA int gnu_ext = 1;
+
+/* use TinyCC extensions */
+ST_DATA int tcc_ext = 1;
+
+/* XXX: get rid of this ASAP */
+ST_DATA struct TCCState *tcc_state;
+
+/********************************************************/
+
+#ifdef ONE_SOURCE
+#include "tccpp.c"
+#include "tccgen.c"
+#include "tccelf.c"
+#include "tccrun.c"
+#ifdef TCC_TARGET_I386
+#include "i386-gen.c"
+#endif
+#ifdef TCC_TARGET_ARM
+#include "arm-gen.c"
+#endif
+#ifdef TCC_TARGET_ARM64
+#include "arm64-gen.c"
+#endif
+#ifdef TCC_TARGET_C67
+#include "c67-gen.c"
+#endif
+#ifdef TCC_TARGET_X86_64
+#include "x86_64-gen.c"
+#endif
+#ifdef CONFIG_TCC_ASM
+#include "tccasm.c"
+#if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
+#include "i386-asm.c"
+#endif
+#endif
+#ifdef TCC_TARGET_COFF
+#include "tcccoff.c"
+#endif
+#ifdef TCC_TARGET_PE
+#include "tccpe.c"
+#endif
+#endif /* ONE_SOURCE */
+
+/********************************************************/
+#ifndef CONFIG_TCC_ASM
+ST_FUNC void asm_instr(void)
+{
+    tcc_error("inline asm() not supported");
+}
+ST_FUNC void asm_global_instr(void)
+{
+    tcc_error("inline asm() not supported");
+}
+#endif
+
+/********************************************************/
+#ifdef _WIN32
+static char *normalize_slashes(char *path)
+{
+    char *p;
+    for (p = path; *p; ++p)
+        if (*p == '\\')
+            *p = '/';
+    return path;
+}
+
+static HMODULE tcc_module;
+
+/* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
+static void tcc_set_lib_path_w32(TCCState *s)
+{
+    char path[1024], *p;
+    GetModuleFileNameA(tcc_module, path, sizeof path);
+    p = tcc_basename(normalize_slashes(strlwr(path)));
+    if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
+        p -= 5;
+    else if (p > path)
+        p--;
+    *p = 0;
+    tcc_set_lib_path(s, path);
+}
+
+#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
+
+#ifndef CONFIG_TCC_STATIC
+void dlclose(void *p)
+{
+    FreeLibrary((HMODULE)p);
+}
+#endif
+
+#ifdef LIBTCC_AS_DLL
+BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
+{
+    if (DLL_PROCESS_ATTACH == dwReason)
+        tcc_module = hDll;
+    return TRUE;
+}
+#endif
+#endif
+
+/********************************************************/
+/* copy a string and truncate it. */
+PUB_FUNC char *pstrcpy(char *buf, int 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. */
+PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
+{
+    int len;
+    len = strlen(buf);
+    if (len < buf_size)
+        pstrcpy(buf + len, buf_size - len, s);
+    return buf;
+}
+
+PUB_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);
+}
+
+/********************************************************/
+/* memory management */
+
+#undef free
+#undef malloc
+#undef realloc
+
+#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)
+        tcc_error("memory full (malloc)");
+    return ptr;
+}
+
+PUB_FUNC void *tcc_mallocz(unsigned long size)
+{
+    void *ptr;
+    ptr = tcc_malloc(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)
+        tcc_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;
+}
+
+PUB_FUNC void tcc_memstats(int bench)
+{
+}
+
+#else
+
+#define MEM_DEBUG_MAGIC1 0xFEEDDEB1
+#define MEM_DEBUG_MAGIC2 0xFEEDDEB2
+#define MEM_DEBUG_FILE_LEN 15
+
+struct mem_debug_header {
+    size_t      magic1;
+    size_t      size;
+    struct mem_debug_header *prev;
+    struct mem_debug_header *next;
+    size_t      line_num;
+    char        file_name[MEM_DEBUG_FILE_LEN + 1];
+    size_t      magic2;
+};
+
+typedef struct mem_debug_header mem_debug_header_t;
+
+static mem_debug_header_t *mem_debug_chain;
+static size_t mem_cur_size;
+static size_t mem_max_size;
+
+PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
+{
+    void *ptr;
+    mem_debug_header_t *header;
+
+    ptr = malloc(sizeof(mem_debug_header_t) + size);
+    if (!ptr)
+        tcc_error("memory full (malloc)");
+
+    mem_cur_size += size;
+    if (mem_cur_size > mem_max_size)
+        mem_max_size = mem_cur_size;
+
+    header = (mem_debug_header_t *)ptr;
+
+    header->magic1 = MEM_DEBUG_MAGIC1;
+    header->magic2 = MEM_DEBUG_MAGIC2;
+    header->size = size;
+    header->line_num = line;
+
+    strncpy(header->file_name, file, MEM_DEBUG_FILE_LEN);
+    header->file_name[MEM_DEBUG_FILE_LEN] = 0;
+
+    header->next = mem_debug_chain;
+    header->prev = NULL;
+
+    if (header->next)
+        header->next->prev = header;
+
+    mem_debug_chain = header;
+
+    ptr = (char *)ptr + sizeof(mem_debug_header_t);
+    return ptr;
+}
+
+PUB_FUNC void tcc_free_debug(void *ptr)
+{
+    mem_debug_header_t *header;
+
+    if (!ptr)
+        return;
+
+    ptr = (char *)ptr - sizeof(mem_debug_header_t);
+    header = (mem_debug_header_t *)ptr;
+    if (header->magic1 != MEM_DEBUG_MAGIC1 ||
+        header->magic2 != MEM_DEBUG_MAGIC2 ||
+        header->size == (size_t)-1 )
+    {
+        tcc_error("tcc_free check failed");
+    }
+
+    mem_cur_size -= header->size;
+    header->size = (size_t)-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;
+
+    free(ptr);
+}
+
+
+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) {
+        ptr = tcc_malloc_debug(size, file, line);
+        return ptr;
+    }
+
+    ptr = (char *)ptr - sizeof(mem_debug_header_t);
+    header = (mem_debug_header_t *)ptr;
+    if (header->magic1 != MEM_DEBUG_MAGIC1 ||
+        header->magic2 != MEM_DEBUG_MAGIC2 ||
+        header->size == (size_t)-1 )
+    {
+        check_error:
+            tcc_error("tcc_realloc check failed");
+    }
+
+    mem_debug_chain_update = (header == mem_debug_chain);
+
+    mem_cur_size -= header->size;
+    ptr = realloc(ptr, sizeof(mem_debug_header_t) + size);
+    if (!ptr)
+        tcc_error("memory full (realloc)");
+
+    header = (mem_debug_header_t *)ptr;
+    if (header->magic1 != MEM_DEBUG_MAGIC1 ||
+        header->magic2 != MEM_DEBUG_MAGIC2)
+    {
+        goto check_error;
+    }
+
+    mem_cur_size += size;
+    if (mem_cur_size > mem_max_size)
+        mem_max_size = mem_cur_size;
+
+    header->size = size;
+    if (header->next)
+        header->next->prev = header;
+
+    if (header->prev)
+        header->prev->next = header;
+
+    if (mem_debug_chain_update)
+        mem_debug_chain = header;
+
+    ptr = (char *)ptr + sizeof(mem_debug_header_t);
+    return ptr;
+}
+
+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_memstats(int bench)
+{
+    if (mem_cur_size) {
+        mem_debug_header_t *header = mem_debug_chain;
+
+        fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
+            mem_cur_size, mem_max_size);
+
+        while (header) {
+            fprintf(stderr, "  file %s, line %u: %u bytes\n",
+                header->file_name, header->line_num, header->size);
+            header = header->next;
+        }
+    }
+    else if (bench)
+        fprintf(stderr, "mem_max_size= %d bytes\n", mem_max_size);
+}
+
+#undef MEM_DEBUG_MAGIC1
+#undef MEM_DEBUG_MAGIC2
+#undef MEM_DEBUG_FILE_LEN
+
+#endif
+
+#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 = *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 *));
+        *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; ++p) {
+            if (c == '{' && p[1] && p[2] == '}') {
+                c = p[1], p += 2;
+                if (c == 'B')
+                    cstr_cat(&str, s->tcc_lib_path);
+            } else {
+                cstr_ccat(&str, c);
+            }
+        }
+        cstr_ccat(&str, '\0');
+        dynarray_add(p_ary, p_nb_ary, str.data);
+        in = p+1;
+    } while (*p);
+}
+
+/********************************************************/
+
+ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags)
+{
+    Section *sec;
+
+    sec = tcc_mallocz(sizeof(Section) + strlen(name));
+    strcpy(sec->name, name);
+    sec->sh_type = sh_type;
+    sec->sh_flags = sh_flags;
+    switch(sh_type) {
+    case SHT_HASH:
+    case SHT_REL:
+    case SHT_RELA:
+    case SHT_DYNSYM:
+    case SHT_SYMTAB:
+    case SHT_DYNAMIC:
+        sec->sh_addralign = 4;
+        break;
+    case SHT_STRTAB:
+        sec->sh_addralign = 1;
+        break;
+    default:
+        sec->sh_addralign = 32; /* default conservative alignment */
+        break;
+    }
+
+    if (sh_flags & SHF_PRIVATE) {
+        dynarray_add((void ***)&s1->priv_sections, &s1->nb_priv_sections, sec);
+    } else {
+        sec->sh_num = s1->nb_sections;
+        dynarray_add((void ***)&s1->sections, &s1->nb_sections, sec);
+    }
+
+    return sec;
+}
+
+static void free_section(Section *s)
+{
+    tcc_free(s->data);
+}
+
+/* realloc section and set its content to zero */
+ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
+{
+    unsigned long size;
+    unsigned char *data;
+
+    size = sec->data_allocated;
+    if (size == 0)
+        size = 1;
+    while (size < new_size)
+        size = size * 2;
+    data = tcc_realloc(sec->data, size);
+    memset(data + sec->data_allocated, 0, size - sec->data_allocated);
+    sec->data = data;
+    sec->data_allocated = size;
+}
+
+/* reserve at least 'size' bytes in section 'sec' from
+   sec->data_offset. */
+ST_FUNC void *section_ptr_add(Section *sec, addr_t size)
+{
+    size_t offset, offset1;
+
+    offset = sec->data_offset;
+    offset1 = offset + size;
+    if (offset1 > sec->data_allocated)
+        section_realloc(sec, offset1);
+    sec->data_offset = offset1;
+    return sec->data + offset;
+}
+
+/* reserve at least 'size' bytes from section start */
+ST_FUNC void section_reserve(Section *sec, unsigned long size)
+{
+    if (size > sec->data_allocated)
+        section_realloc(sec, size);
+    if (size > sec->data_offset)
+        sec->data_offset = size;
+}
+
+/* return a reference to a section, and create it if it does not
+   exists */
+ST_FUNC Section *find_section(TCCState *s1, const char *name)
+{
+    Section *sec;
+    int i;
+    for(i = 1; i < s1->nb_sections; i++) {
+        sec = s1->sections[i];
+        if (!strcmp(name, sec->name))
+            return sec;
+    }
+    /* sections are created as PROGBITS */
+    return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC);
+}
+
+/* update sym->c so that it points to an external symbol in section
+   'section' with value 'value' */
+ST_FUNC void put_extern_sym2(Sym *sym, Section *section,
+                            addr_t value, unsigned long size,
+                            int can_add_underscore)
+{
+    int sym_type, sym_bind, sh_num, info, other;
+    ElfW(Sym) *esym;
+    const char *name;
+    char buf1[256];
+
+#ifdef CONFIG_TCC_BCHECK
+    char buf[32];
+#endif
+
+    if (section == NULL)
+        sh_num = SHN_UNDEF;
+    else if (section == SECTION_ABS)
+        sh_num = SHN_ABS;
+    else
+        sh_num = section->sh_num;
+
+    if ((sym->type.t & VT_BTYPE) == VT_FUNC) {
+        sym_type = STT_FUNC;
+    } else if ((sym->type.t & VT_BTYPE) == VT_VOID) {
+        sym_type = STT_NOTYPE;
+    } else {
+        sym_type = STT_OBJECT;
+    }
+
+    if (sym->type.t & VT_STATIC)
+        sym_bind = STB_LOCAL;
+    else {
+        if (sym->type.t & VT_WEAK)
+            sym_bind = STB_WEAK;
+        else
+            sym_bind = STB_GLOBAL;
+    }
+
+    if (!sym->c) {
+        name = get_tok_str(sym->v, NULL);
+#ifdef CONFIG_TCC_BCHECK
+        if (tcc_state->do_bounds_check) {
+            /* XXX: avoid doing that for statics ? */
+            /* if bound checking is activated, we change some function
+               names by adding the "__bound" prefix */
+            switch(sym->v) {
+#ifdef TCC_TARGET_PE
+            /* XXX: we rely only on malloc hooks */
+            case TOK_malloc:
+            case TOK_free:
+            case TOK_realloc:
+            case TOK_memalign:
+            case TOK_calloc:
+#endif
+            case TOK_memcpy:
+            case TOK_memmove:
+            case TOK_memset:
+            case TOK_strlen:
+            case TOK_strcpy:
+            case TOK_alloca:
+                strcpy(buf, "__bound_");
+                strcat(buf, name);
+                name = buf;
+                break;
+            }
+        }
+#endif
+        other = 0;
+
+#ifdef TCC_TARGET_PE
+        if (sym->type.t & VT_EXPORT)
+            other |= ST_PE_EXPORT;
+        if (sym_type == STT_FUNC && sym->type.ref) {
+            Sym *ref = sym->type.ref;
+            if (ref->a.func_export)
+                other |= ST_PE_EXPORT;
+            if (ref->a.func_call == FUNC_STDCALL && can_add_underscore) {
+                sprintf(buf1, "_%s@%d", name, ref->a.func_args * PTR_SIZE);
+                name = buf1;
+                other |= ST_PE_STDCALL;
+                can_add_underscore = 0;
+            }
+        } else {
+            if (find_elf_sym(tcc_state->dynsymtab_section, name))
+                other |= ST_PE_IMPORT;
+            if (sym->type.t & VT_IMPORT)
+                other |= ST_PE_IMPORT;
+        }
+#else
+        if (! (sym->type.t & VT_STATIC))
+	    other = (sym->type.t & VT_VIS_MASK) >> VT_VIS_SHIFT;
+#endif
+        if (tcc_state->leading_underscore && can_add_underscore) {
+            buf1[0] = '_';
+            pstrcpy(buf1 + 1, sizeof(buf1) - 1, name);
+            name = buf1;
+        }
+        if (sym->asm_label) {
+            name = sym->asm_label;
+        }
+        info = ELFW(ST_INFO)(sym_bind, sym_type);
+        sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name);
+    } else {
+        esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
+        esym->st_value = value;
+        esym->st_size = size;
+        esym->st_shndx = sh_num;
+    }
+}
+
+ST_FUNC void put_extern_sym(Sym *sym, Section *section,
+                           addr_t value, unsigned long size)
+{
+    put_extern_sym2(sym, section, value, size, 1);
+}
+
+/* add a new relocation entry to symbol 'sym' in section 's' */
+ST_FUNC void greloca(Section *s, Sym *sym, unsigned long offset, int type,
+                     addr_t addend)
+{
+    int c = 0;
+    if (sym) {
+        if (0 == sym->c)
+            put_extern_sym(sym, NULL, 0, 0);
+        c = sym->c;
+    }
+    /* now we can add ELF relocation info */
+    put_elf_reloca(symtab_section, s, offset, type, c, addend);
+}
+
+ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type)
+{
+    greloca(s, sym, offset, type, 0);
+}
+
+/********************************************************/
+
+static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
+{
+    int len;
+    len = strlen(buf);
+    vsnprintf(buf + len, buf_size - len, fmt, ap);
+}
+
+static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    strcat_vprintf(buf, buf_size, fmt, ap);
+    va_end(ap);
+}
+
+static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
+{
+    char buf[2048];
+    BufferedFile **pf, *f;
+
+    buf[0] = '\0';
+    /* 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++)
+            strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
+                (*pf)->filename, (*pf)->line_num);
+        if (f->line_num > 0) {
+            strcat_printf(buf, sizeof(buf), "%s:%d: ",
+                f->filename, f->line_num);
+        } else {
+            strcat_printf(buf, sizeof(buf), "%s: ",
+                f->filename);
+        }
+    } else {
+        strcat_printf(buf, sizeof(buf), "tcc: ");
+    }
+    if (is_warning)
+        strcat_printf(buf, sizeof(buf), "warning: ");
+    else
+        strcat_printf(buf, sizeof(buf), "error: ");
+    strcat_vprintf(buf, sizeof(buf), fmt, ap);
+
+    if (!s1->error_func) {
+        /* default case: stderr */
+        if (s1->ppfp) /* print a newline during tcc -E */
+            fprintf(s1->ppfp, "\n"), fflush(s1->ppfp);
+        fprintf(stderr, "%s\n", buf);
+        fflush(stderr); /* print error/warning now (win32) */
+    } else {
+        s1->error_func(s1->error_opaque, buf);
+    }
+    if (!is_warning || s1->warn_error)
+        s1->nb_errors++;
+}
+
+LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
+                        void (*error_func)(void *opaque, const char *msg))
+{
+    s->error_opaque = error_opaque;
+    s->error_func = error_func;
+}
+
+/* error without aborting current compilation */
+PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
+{
+    TCCState *s1 = tcc_state;
+    va_list ap;
+
+    va_start(ap, fmt);
+    error1(s1, 0, fmt, ap);
+    va_end(ap);
+}
+
+PUB_FUNC void tcc_error(const char *fmt, ...)
+{
+    TCCState *s1 = tcc_state;
+    va_list ap;
+
+    va_start(ap, fmt);
+    error1(s1, 0, fmt, ap);
+    va_end(ap);
+    /* better than nothing: in some cases, we accept to handle errors */
+    if (s1->error_set_jmp_enabled) {
+        longjmp(s1->error_jmp_buf, 1);
+    } else {
+        /* XXX: eliminate this someday */
+        exit(1);
+    }
+}
+
+PUB_FUNC void tcc_warning(const char *fmt, ...)
+{
+    TCCState *s1 = tcc_state;
+    va_list ap;
+
+    if (s1->warn_none)
+        return;
+
+    va_start(ap, fmt);
+    error1(s1, 1, 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->line_num = 1;
+    bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
+    bf->fd = -1;
+    bf->prev = file;
+    file = bf;
+}
+
+ST_FUNC void tcc_close(void)
+{
+    BufferedFile *bf = file;
+    if (bf->fd > 0) {
+        close(bf->fd);
+        total_lines += bf->line_num;
+    }
+    file = bf->prev;
+    tcc_free(bf);
+}
+
+ST_FUNC 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);
+    if (fd < 0)
+        return -1;
+
+    tcc_open_bf(s1, filename, 0);
+    file->fd = fd;
+    return fd;
+}
+
+/* compile the C file opened in 'file'. Return non zero if errors. */
+static int tcc_compile(TCCState *s1)
+{
+    Sym *define_start;
+    char buf[512];
+    volatile int section_sym;
+
+#ifdef INC_DEBUG
+    printf("%s: **** new file\n", file->filename);
+#endif
+    preprocess_init(s1);
+
+    cur_text_section = NULL;
+    funcname = "";
+    anon_sym = SYM_FIRST_ANOM;
+
+    /* file info: full path + filename */
+    section_sym = 0; /* avoid warning */
+    if (s1->do_debug) {
+        section_sym = put_elf_sym(symtab_section, 0, 0,
+                                  ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
+                                  text_section->sh_num, NULL);
+        getcwd(buf, sizeof(buf));
+#ifdef _WIN32
+        normalize_slashes(buf);
+#endif
+        pstrcat(buf, sizeof(buf), "/");
+        put_stabs_r(buf, N_SO, 0, 0,
+                    text_section->data_offset, text_section, section_sym);
+        put_stabs_r(file->filename, N_SO, 0, 0,
+                    text_section->data_offset, text_section, section_sym);
+    }
+    /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
+       symbols can be safely used */
+    put_elf_sym(symtab_section, 0, 0,
+                ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0,
+                SHN_ABS, file->filename);
+
+    /* define some often used types */
+    int_type.t = VT_INT;
+
+    char_pointer_type.t = VT_BYTE;
+    mk_pointer(&char_pointer_type);
+
+#if PTR_SIZE == 4
+    size_type.t = VT_INT;
+#else
+    size_type.t = VT_LLONG;
+#endif
+
+    func_old_type.t = VT_FUNC;
+    func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD);
+#ifdef TCC_TARGET_ARM
+    arm_init(s1);
+#endif
+
+#if 0
+    /* define 'void *alloca(unsigned int)' builtin function */
+    {
+        Sym *s1;
+
+        p = anon_sym++;
+        sym = sym_push(p, mk_pointer(VT_VOID), FUNC_CDECL, FUNC_NEW);
+        s1 = sym_push(SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0);
+        s1->next = NULL;
+        sym->next = s1;
+        sym_push(TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0);
+    }
+#endif
+
+    define_start = define_stack;
+    nocode_wanted = 1;
+
+    if (setjmp(s1->error_jmp_buf) == 0) {
+        s1->nb_errors = 0;
+        s1->error_set_jmp_enabled = 1;
+
+        ch = file->buf_ptr[0];
+        tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
+        parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM | PARSE_FLAG_TOK_STR;
+        next();
+        decl(VT_CONST);
+        if (tok != TOK_EOF)
+            expect("declaration");
+        check_vstack();
+
+        /* end of translation unit info */
+        if (s1->do_debug) {
+            put_stabs_r(NULL, N_SO, 0, 0,
+                        text_section->data_offset, text_section, section_sym);
+        }
+    }
+
+    s1->error_set_jmp_enabled = 0;
+
+    /* reset define stack, but leave -Dsymbols (may be incorrect if
+       they are undefined) */
+    free_defines(define_start);
+
+    gen_inline_functions();
+
+    sym_pop(&global_stack, NULL);
+    sym_pop(&local_stack, NULL);
+
+    return s1->nb_errors != 0 ? -1 : 0;
+}
+
+LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
+{
+    int len, ret;
+
+    len = strlen(str);
+    tcc_open_bf(s, "<string>", len);
+    memcpy(file->buffer, str, len);
+    ret = tcc_compile(s);
+    tcc_close();
+    return ret;
+}
+
+/* define a preprocessor symbol. A value can also be provided with the '=' operator */
+LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
+{
+    int len1, len2;
+    /* default value */
+    if (!value)
+        value = "1";
+    len1 = strlen(sym);
+    len2 = strlen(value);
+
+    /* init file structure */
+    tcc_open_bf(s1, "<define>", len1 + len2 + 1);
+    memcpy(file->buffer, sym, len1);
+    file->buffer[len1] = ' ';
+    memcpy(file->buffer + len1 + 1, value, len2);
+
+    /* parse with define parser */
+    ch = file->buf_ptr[0];
+    next_nomacro();
+    parse_define();
+
+    tcc_close();
+}
+
+/* undefine a preprocessor symbol */
+LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
+{
+    TokenSym *ts;
+    Sym *s;
+    ts = tok_alloc(sym, strlen(sym));
+    s = define_find(ts->tok);
+    /* undefine symbol by putting an invalid name */
+    if (s)
+        define_undef(s);
+}
+
+/* cleanup all static data used during compilation */
+static void tcc_cleanup(void)
+{
+    if (NULL == tcc_state)
+        return;
+    tcc_state = NULL;
+
+    preprocess_delete();
+
+    /* free sym_pools */
+    dynarray_reset(&sym_pools, &nb_sym_pools);
+    /* string buffer */
+    cstr_free(&tokcstr);
+    /* reset symbol stack */
+    sym_free_first = NULL;
+}
+
+LIBTCCAPI TCCState *tcc_new(void)
+{
+    TCCState *s;
+    char buffer[100];
+    int a,b,c;
+
+    tcc_cleanup();
+
+    s = tcc_mallocz(sizeof(TCCState));
+    if (!s)
+        return NULL;
+    tcc_state = s;
+#ifdef _WIN32
+    tcc_set_lib_path_w32(s);
+#else
+    tcc_set_lib_path(s, CONFIG_TCCDIR);
+#endif
+    s->output_type = 0;
+    preprocess_new();
+    s->include_stack_ptr = s->include_stack;
+
+    /* we add dummy defines for some special macros to speed up tests
+       and to have working defined() */
+    define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
+    define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
+    define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
+    define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
+
+    /* define __TINYC__ 92X  */
+    sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
+    sprintf(buffer, "%d", a*10000 + b*100 + c);
+    tcc_define_symbol(s, "__TINYC__", buffer);
+
+    /* standard defines */
+    tcc_define_symbol(s, "__STDC__", NULL);
+    tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
+    tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
+
+    /* target defines */
+#if defined(TCC_TARGET_I386)
+    tcc_define_symbol(s, "__i386__", NULL);
+    tcc_define_symbol(s, "__i386", NULL);
+    tcc_define_symbol(s, "i386", NULL);
+#elif defined(TCC_TARGET_X86_64)
+    tcc_define_symbol(s, "__x86_64__", NULL);
+#elif defined(TCC_TARGET_ARM)
+    tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
+    tcc_define_symbol(s, "__arm_elf__", NULL);
+    tcc_define_symbol(s, "__arm_elf", NULL);
+    tcc_define_symbol(s, "arm_elf", NULL);
+    tcc_define_symbol(s, "__arm__", NULL);
+    tcc_define_symbol(s, "__arm", NULL);
+    tcc_define_symbol(s, "arm", NULL);
+    tcc_define_symbol(s, "__APCS_32__", NULL);
+    tcc_define_symbol(s, "__ARMEL__", NULL);
+#if defined(TCC_ARM_EABI)
+    tcc_define_symbol(s, "__ARM_EABI__", NULL);
+#endif
+#if defined(TCC_ARM_HARDFLOAT)
+    s->float_abi = ARM_HARD_FLOAT;
+    tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
+#else
+    s->float_abi = ARM_SOFTFP_FLOAT;
+#endif
+#elif defined(TCC_TARGET_ARM64)
+    tcc_define_symbol(s, "__aarch64__", NULL);
+#endif
+
+#ifdef TCC_TARGET_PE
+    tcc_define_symbol(s, "_WIN32", NULL);
+# ifdef TCC_TARGET_X86_64
+    tcc_define_symbol(s, "_WIN64", NULL);
+# endif
+#else
+    tcc_define_symbol(s, "__unix__", NULL);
+    tcc_define_symbol(s, "__unix", NULL);
+    tcc_define_symbol(s, "unix", NULL);
+# if defined(__linux)
+    tcc_define_symbol(s, "__linux__", NULL);
+    tcc_define_symbol(s, "__linux", NULL);
+# endif
+# if defined(__FreeBSD__)
+#  define str(s) #s
+    tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__));
+#  undef str
+# endif
+# if defined(__FreeBSD_kernel__)
+    tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
+# endif
+#endif
+
+    /* TinyCC & gcc defines */
+#if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64
+    tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
+    tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
+#else
+    tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
+    tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
+#endif
+
+#ifdef TCC_TARGET_PE
+    tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
+    tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
+#else
+    tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
+    /* wint_t is unsigned int by default, but (signed) int on BSDs
+       and unsigned short on windows.  Other OSes might have still
+       other conventions, sigh.  */
+#if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
+    tcc_define_symbol(s, "__WINT_TYPE__", "int");
+#else
+    tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
+#endif
+#endif
+
+#ifndef TCC_TARGET_PE
+    /* glibc defines */
+    tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)");
+    tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW");
+    /* paths for crt objects */
+    tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
+#endif
+
+    /* no section zero */
+    dynarray_add((void ***)&s->sections, &s->nb_sections, NULL);
+
+    /* create standard sections */
+    text_section = new_section(s, ".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
+    data_section = new_section(s, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
+    bss_section = new_section(s, ".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
+
+    /* symbols are always generated for linking stage */
+    symtab_section = new_symtab(s, ".symtab", SHT_SYMTAB, 0,
+                                ".strtab",
+                                ".hashtab", SHF_PRIVATE);
+    strtab_section = symtab_section->link;
+    s->symtab = symtab_section;
+
+    /* private symbol table for dynamic symbols */
+    s->dynsymtab_section = new_symtab(s, ".dynsymtab", SHT_SYMTAB, SHF_PRIVATE,
+                                      ".dynstrtab",
+                                      ".dynhashtab", SHF_PRIVATE);
+    s->alacarte_link = 1;
+    s->nocommon = 1;
+    s->warn_implicit_function_declaration = 1;
+
+#ifdef CHAR_IS_UNSIGNED
+    s->char_is_unsigned = 1;
+#endif
+    /* enable this if you want symbols with leading underscore on windows: */
+#if 0 /* def TCC_TARGET_PE */
+    s->leading_underscore = 1;
+#endif
+#ifdef TCC_TARGET_I386
+    s->seg_size = 32;
+#endif
+#ifdef TCC_IS_NATIVE
+    s->runtime_main = "main";
+#endif
+    return s;
+}
+
+LIBTCCAPI void tcc_delete(TCCState *s1)
+{
+    int i;
+    int bench = s1->do_bench;
+
+    tcc_cleanup();
+
+    /* close a preprocessor output */
+    if (s1->ppfp && s1->ppfp != stdout)
+        fclose(s1->ppfp);
+
+    /* free all sections */
+    for(i = 1; i < s1->nb_sections; i++)
+        free_section(s1->sections[i]);
+    dynarray_reset(&s1->sections, &s1->nb_sections);
+
+    for(i = 0; i < s1->nb_priv_sections; i++)
+        free_section(s1->priv_sections[i]);
+    dynarray_reset(&s1->priv_sections, &s1->nb_priv_sections);
+
+    /* free any loaded DLLs */
+#ifdef TCC_IS_NATIVE
+    for ( i = 0; i < s1->nb_loaded_dlls; i++) {
+        DLLReference *ref = s1->loaded_dlls[i];
+        if ( ref->handle )
+            dlclose(ref->handle);
+    }
+#endif
+
+    /* free loaded dlls array */
+    dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls);
+
+    /* 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->cached_includes, &s1->nb_cached_includes);
+    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->init_symbol);
+    tcc_free(s1->fini_symbol);
+    tcc_free(s1->outfile);
+    tcc_free(s1->deps_outfile);
+    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);
+
+#ifdef TCC_IS_NATIVE
+# ifdef HAVE_SELINUX
+    munmap (s1->write_mem, s1->mem_size);
+    munmap (s1->runtime_mem, s1->mem_size);
+# else
+    tcc_free(s1->runtime_mem);
+# endif
+#endif
+
+    tcc_free(s1->sym_attrs);
+    tcc_free(s1);
+    tcc_memstats(bench);
+}
+
+LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
+{
+    tcc_split_path(s, (void ***)&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, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
+    return 0;
+}
+
+ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags, int filetype)
+{
+    ElfW(Ehdr) ehdr;
+    int fd, ret, size;
+
+    parse_flags = 0;
+#ifdef CONFIG_TCC_ASM
+    /* if .S file, define __ASSEMBLER__ like gcc does */
+    if ((filetype == TCC_FILETYPE_ASM) || (filetype == TCC_FILETYPE_ASM_PP)) {
+        tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
+        parse_flags = PARSE_FLAG_ASM_FILE;
+    }
+#endif
+
+    /* open the file */
+    ret = tcc_open(s1, filename);
+    if (ret < 0) {
+        if (flags & AFF_PRINT_ERROR)
+            tcc_error_noabort("file '%s' not found", filename);
+        return ret;
+    }
+
+    /* update target deps */
+    dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
+            tcc_strdup(filename));
+
+    if (flags & AFF_PREPROCESS) {
+        ret = tcc_preprocess(s1);
+        goto the_end;
+    }
+
+    if (filetype == TCC_FILETYPE_C) {
+        /* C file assumed */
+        ret = tcc_compile(s1);
+        goto the_end;
+    }
+
+#ifdef CONFIG_TCC_ASM
+    if (filetype == TCC_FILETYPE_ASM_PP) {
+        /* non preprocessed assembler */
+        ret = tcc_assemble(s1, 1);
+        goto the_end;
+    }
+
+    if (filetype == TCC_FILETYPE_ASM) {
+        /* preprocessed assembler */
+        ret = tcc_assemble(s1, 0);
+        goto the_end;
+    }
+#endif
+
+    fd = file->fd;
+    /* assume executable format: auto guess file type */
+    size = read(fd, &ehdr, sizeof(ehdr));
+    lseek(fd, 0, SEEK_SET);
+    if (size <= 0) {
+        tcc_error_noabort("could not read header");
+        goto the_end;
+    }
+
+    if (size == sizeof(ehdr) &&
+        ehdr.e_ident[0] == ELFMAG0 &&
+        ehdr.e_ident[1] == ELFMAG1 &&
+        ehdr.e_ident[2] == ELFMAG2 &&
+        ehdr.e_ident[3] == ELFMAG3) {
+
+        /* do not display line number if error */
+        file->line_num = 0;
+        if (ehdr.e_type == ET_REL) {
+            ret = tcc_load_object_file(s1, fd, 0);
+            goto the_end;
+
+        }
+#ifndef TCC_TARGET_PE
+        if (ehdr.e_type == ET_DYN) {
+            if (s1->output_type == TCC_OUTPUT_MEMORY) {
+#ifdef TCC_IS_NATIVE
+                void *h;
+                h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
+                if (h)
+#endif
+                    ret = 0;
+            } else {
+                ret = tcc_load_dll(s1, fd, filename,
+                                   (flags & AFF_REFERENCED_DLL) != 0);
+            }
+            goto the_end;
+        }
+#endif
+        tcc_error_noabort("unrecognized ELF file");
+        goto the_end;
+    }
+
+    if (memcmp((char *)&ehdr, ARMAG, 8) == 0) {
+        file->line_num = 0; /* do not display line number if error */
+        ret = tcc_load_archive(s1, fd);
+        goto the_end;
+    }
+
+#ifdef TCC_TARGET_COFF
+    if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
+        ret = tcc_load_coff(s1, fd);
+        goto the_end;
+    }
+#endif
+
+#ifdef TCC_TARGET_PE
+    ret = pe_load_file(s1, filename, fd);
+#else
+    /* as GNU ld, consider it is an ld script if not recognized */
+    ret = tcc_load_ldscript(s1);
+#endif
+    if (ret < 0)
+        tcc_error_noabort("unrecognized file type");
+
+the_end:
+    tcc_close();
+    return ret;
+}
+
+LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename, int filetype)
+{
+    if (s->output_type == TCC_OUTPUT_PREPROCESS)
+        return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS, filetype);
+    else
+        return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR, filetype);
+}
+
+LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
+{
+    tcc_split_path(s, (void ***)&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, TCC_FILETYPE_BINARY) == 0)
+            return 0;
+    }
+    return -1;
+}
+
+#ifndef TCC_TARGET_PE
+/* find and load a dll. Return non zero if not found */
+/* XXX: add '-rpath' option support ? */
+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);
+}
+#endif
+
+ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
+{
+    if (-1 == tcc_add_library_internal(s, "%s/%s",
+        filename, 0, s->crt_paths, s->nb_crt_paths))
+        tcc_error_noabort("file '%s' not found", filename);
+    return 0;
+}
+
+/* the library name is the same as the argument of the '-l' option */
+LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
+{
+#ifdef TCC_TARGET_PE
+    const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
+    const char **pp = s->static_link ? libs + 4 : libs;
+#else
+    const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
+    const char **pp = s->static_link ? libs + 1 : libs;
+#endif
+    while (*pp) {
+        if (0 == tcc_add_library_internal(s, *pp,
+            libraryname, 0, s->library_paths, s->nb_library_paths))
+            return 0;
+        ++pp;
+    }
+    return -1;
+}
+
+PUB_FUNC int tcc_add_library_err(TCCState *s, const char *libname)
+{
+    int ret = tcc_add_library(s, libname);
+    if (ret < 0)
+        tcc_error_noabort("cannot find library 'lib%s'", libname);
+    return ret;
+}
+
+/* habdle #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 *s, 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(s, 0, name, (uintptr_t)val);
+#else
+    add_elf_sym(symtab_section, (uintptr_t)val, 0,
+        ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
+        SHN_ABS, name);
+#endif
+    return 0;
+}
+
+LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
+{
+    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 bound checking, then add corresponding sections */
+#ifdef CONFIG_TCC_BCHECK
+    if (s->do_bounds_check) {
+        /* define symbol */
+        tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
+        /* create bounds sections */
+        bounds_section = new_section(s, ".bounds",
+                                     SHT_PROGBITS, SHF_ALLOC);
+        lbounds_section = new_section(s, ".lbounds",
+                                      SHT_PROGBITS, SHF_ALLOC);
+    }
+#endif
+
+    if (s->char_is_unsigned) {
+        tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
+    }
+
+    /* add debug sections */
+    if (s->do_debug) {
+        /* stab symbols */
+        stab_section = new_section(s, ".stab", SHT_PROGBITS, 0);
+        stab_section->sh_entsize = sizeof(Stab_Sym);
+        stabstr_section = new_section(s, ".stabstr", SHT_STRTAB, 0);
+        put_elf_str(stabstr_section, "");
+        stab_section->link = stabstr_section;
+        /* put first entry */
+        put_stabs("", 0, 0, 0, 0);
+    }
+
+    tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
+#ifdef TCC_TARGET_PE
+# ifdef _WIN32
+    tcc_add_systemdir(s);
+# endif
+#else
+    /* add libc crt1/crti objects */
+    if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
+        !s->nostdlib) {
+        if (output_type != TCC_OUTPUT_DLL)
+            tcc_add_crt(s, "crt1.o");
+        tcc_add_crt(s, "crti.o");
+    }
+#endif
+
+#ifdef CONFIG_TCC_BCHECK
+    if (s->do_bounds_check && (output_type == TCC_OUTPUT_EXE))
+    {
+        /* force a bcheck.o linking */
+        addr_t func = TOK___bound_init;
+        Sym *sym = external_global_sym(func, &func_old_type, 0);
+        if (!sym->c)
+            put_extern_sym(sym, NULL, 0, 0);
+    }
+#endif
+
+    if (s->output_type == TCC_OUTPUT_PREPROCESS)
+        print_defines();
+
+    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);
+}
+
+#define WD_ALL    0x0001 /* warning is activated when using -Wall */
+#define FD_INVERT 0x0002 /* invert value before storing */
+
+typedef struct FlagDef {
+    uint16_t offset;
+    uint16_t flags;
+    const char *name;
+} FlagDef;
+
+static const FlagDef warning_defs[] = {
+    { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
+    { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
+    { offsetof(TCCState, warn_error), 0, "error" },
+    { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
+      "implicit-function-declaration" },
+};
+
+ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, int nb_flags,
+                    const char *name, int value)
+{
+    int i;
+    const FlagDef *p;
+    const char *r;
+
+    r = name;
+    if (r[0] == 'n' && r[1] == 'o' && r[2] == '-') {
+        r += 3;
+        value = !value;
+    }
+    for(i = 0, p = flags; i < nb_flags; i++, p++) {
+        if (!strcmp(r, p->name))
+            goto found;
+    }
+    return -1;
+ found:
+    if (p->flags & FD_INVERT)
+        value = !value;
+    *(int *)((uint8_t *)s + p->offset) = value;
+    return 0;
+}
+
+/* set/reset a warning */
+static int tcc_set_warning(TCCState *s, const char *warning_name, int value)
+{
+    int i;
+    const FlagDef *p;
+
+    if (!strcmp(warning_name, "all")) {
+        for(i = 0, p = warning_defs; i < countof(warning_defs); i++, p++) {
+            if (p->flags & WD_ALL)
+                *(int *)((uint8_t *)s + p->offset) = 1;
+        }
+        return 0;
+    } else {
+        return set_flag(s, warning_defs, countof(warning_defs),
+                        warning_name, value);
+    }
+}
+
+static const FlagDef flag_defs[] = {
+    { 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, old_struct_init_code), 0, "old-struct-init-code" },
+    { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
+};
+
+/* set/reset a flag */
+static int tcc_set_flag(TCCState *s, const char *flag_name, int value)
+{
+    return set_flag(s, flag_defs, countof(flag_defs),
+                    flag_name, value);
+}
+
+
+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;
+
+    /* there should be 1 or 2 dashes */
+    if (*str++ != '-')
+        return 0;
+    if (*str == '-')
+        str++;
+
+    /* then str & val should match (potentialy up to '=') */
+    p = str;
+    q = val;
+
+    while (*q != '\0' && *q != '=') {
+        if (*p != *q)
+            return 0;
+        p++;
+        q++;
+    }
+
+    /* '=' near eos means ',' or '=' is ok */
+    if (*q == '=') {
+        if (*p != ',' && *p != '=')
+            return 0;
+        p++;
+        q++;
+    }
+
+    if (ptr)
+        *ptr = p;
+    return 1;
+}
+
+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 char *copy_linker_arg(const char *p)
+{
+    const char *q = p;
+    skip_linker_arg(&q);
+    return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
+}
+
+/* set linker options */
+static int tcc_set_linker(TCCState *s, const char *option)
+{
+    while (option && *option) {
+
+        const char *p = option;
+        char *end = NULL;
+        int ignoring = 0;
+
+        if (link_option(option, "Bsymbolic", &p)) {
+            s->symbolic = 1;
+        } else if (link_option(option, "nostdlib", &p)) {
+            s->nostdlib = 1;
+        } else if (link_option(option, "fini=", &p)) {
+            s->fini_symbol = copy_linker_arg(p);
+            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)) {
+            s->init_symbol = copy_linker_arg(p);
+            ignoring = 1;
+        } else if (link_option(option, "oformat=", &p)) {
+#if defined(TCC_TARGET_PE)
+            if (strstart("pe-", &p)) {
+#elif defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
+            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, "rpath=", &p)) {
+            s->rpath = copy_linker_arg(p);
+        } else if (link_option(option, "section-alignment=", &p)) {
+            s->section_align = strtoul(p, &end, 16);
+        } else if (link_option(option, "soname=", &p)) {
+            s->soname = copy_linker_arg(p);
+#ifdef TCC_TARGET_PE
+        } 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")) {
+                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
+        } else
+            goto err;
+
+        if (ignoring && s->warn_unsupported) err: {
+            char buf[100], *e;
+            pstrcpy(buf, sizeof buf, e = copy_linker_arg(option)), tcc_free(e);
+            if (ignoring)
+                tcc_warning("unsupported linker option '%s'", buf);
+            else
+                tcc_error("unsupported linker option '%s'", buf);
+        }
+        option = skip_linker_arg(&p);
+    }
+    return 0;
+}
+
+typedef struct TCCOption {
+    const char *name;
+    uint16_t index;
+    uint16_t flags;
+} TCCOption;
+
+enum {
+    TCC_OPTION_HELP,
+    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_g,
+    TCC_OPTION_c,
+    TCC_OPTION_dumpversion,
+    TCC_OPTION_d,
+    TCC_OPTION_float_abi,
+    TCC_OPTION_static,
+    TCC_OPTION_std,
+    TCC_OPTION_shared,
+    TCC_OPTION_soname,
+    TCC_OPTION_o,
+    TCC_OPTION_r,
+    TCC_OPTION_s,
+    TCC_OPTION_traditional,
+    TCC_OPTION_Wl,
+    TCC_OPTION_W,
+    TCC_OPTION_O,
+    TCC_OPTION_m,
+    TCC_OPTION_f,
+    TCC_OPTION_isystem,
+    TCC_OPTION_iwithprefix,
+    TCC_OPTION_nostdinc,
+    TCC_OPTION_nostdlib,
+    TCC_OPTION_print_search_dirs,
+    TCC_OPTION_rdynamic,
+    TCC_OPTION_pedantic,
+    TCC_OPTION_pthread,
+    TCC_OPTION_run,
+    TCC_OPTION_v,
+    TCC_OPTION_w,
+    TCC_OPTION_pipe,
+    TCC_OPTION_E,
+    TCC_OPTION_MD,
+    TCC_OPTION_MF,
+    TCC_OPTION_x,
+};
+
+#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 },
+    { "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 | TCC_OPTION_NOSEP },
+    { "bench", TCC_OPTION_bench, 0 },
+#ifdef CONFIG_TCC_BACKTRACE
+    { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
+#endif
+#ifdef CONFIG_TCC_BCHECK
+    { "b", TCC_OPTION_b, 0 },
+#endif
+    { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "c", TCC_OPTION_c, 0 },
+    { "dumpversion", TCC_OPTION_dumpversion, 0},
+    { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+#ifdef TCC_TARGET_ARM
+    { "mfloat-abi", TCC_OPTION_float_abi, TCC_OPTION_HAS_ARG },
+#endif
+    { "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 },
+    { "pedantic", TCC_OPTION_pedantic, 0},
+    { "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 },
+    { "s", TCC_OPTION_s, 0 },
+    { "traditional", TCC_OPTION_traditional, 0 },
+    { "Wl,", TCC_OPTION_Wl, 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 },
+    { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
+    { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
+    { "iwithprefix", TCC_OPTION_iwithprefix, TCC_OPTION_HAS_ARG },
+    { "nostdinc", TCC_OPTION_nostdinc, 0 },
+    { "nostdlib", TCC_OPTION_nostdlib, 0 },
+    { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
+    { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
+    { "w", TCC_OPTION_w, 0 },
+    { "pipe", TCC_OPTION_pipe, 0},
+    { "E", TCC_OPTION_E, 0},
+    { "MD", TCC_OPTION_MD, 0},
+    { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
+    { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
+    { NULL, 0, 0 },
+};
+
+static void parse_option_D(TCCState *s1, const char *optarg)
+{
+    char *sym = tcc_strdup(optarg);
+    char *value = strchr(sym, '=');
+    if (value)
+        *value++ = '\0';
+    tcc_define_symbol(s1, sym, value);
+    tcc_free(sym);
+}
+
+static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
+{
+    int len = strlen(filename);
+    char *p = tcc_malloc(len + 2);
+    if (filetype) {
+        *p = filetype;
+    }
+    else {
+        /* use a file extension to detect a filetype */
+        const char *ext = tcc_fileextension(filename);
+        if (ext[0]) {
+            ext++;
+            if (!strcmp(ext, "S"))
+                *p = TCC_FILETYPE_ASM_PP;
+            else
+            if (!strcmp(ext, "s"))
+                *p = TCC_FILETYPE_ASM;
+            else
+            if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
+                *p = TCC_FILETYPE_C;
+            else
+                *p = TCC_FILETYPE_BINARY;
+        }
+        else {
+            *p = TCC_FILETYPE_C;
+        }
+    }
+    strcpy(p+1, filename);
+    dynarray_add((void ***)&s->files, &s->nb_files, p);
+}
+
+PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
+{
+    const TCCOption *popt;
+    const char *optarg, *r;
+    int run = 0;
+    int pthread = 0;
+    int optind = 0;
+    int filetype = 0;
+
+    /* collect -Wl options for input such as "-Wl,-rpath -Wl,<path>" */
+    CString linker_arg;
+    cstr_new(&linker_arg);
+
+    while (optind < argc) {
+
+        r = argv[optind++];
+        if (r[0] != '-' || r[1] == '\0') {
+            args_parser_add_file(s, r, filetype);
+            if (run) {
+                optind--;
+                /* argv[0] will be this file */
+                break;
+            }
+            continue;
+        }
+
+        /* find option in table */
+        for(popt = tcc_options; ; ++popt) {
+            const char *p1 = popt->name;
+            const char *r1 = r + 1;
+            if (p1 == NULL)
+                tcc_error("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)
+                        tcc_error("argument to '%s' is missing", r);
+                    optarg = argv[optind++];
+                }
+            } else if (*r1 != '\0')
+                continue;
+            break;
+        }
+
+        switch(popt->index) {
+        case TCC_OPTION_HELP:
+            return 0;
+        case TCC_OPTION_I:
+            tcc_add_include_path(s, optarg);
+            break;
+        case TCC_OPTION_D:
+            parse_option_D(s, optarg);
+            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);
+            break;
+        case TCC_OPTION_l:
+            args_parser_add_file(s, r, TCC_FILETYPE_BINARY);
+            s->nb_libraries++;
+            break;
+        case TCC_OPTION_pthread:
+            parse_option_D(s, "_REENTRANT");
+            pthread = 1;
+            break;
+        case TCC_OPTION_bench:
+            s->do_bench = 1;
+            break;
+#ifdef CONFIG_TCC_BACKTRACE
+        case TCC_OPTION_bt:
+            tcc_set_num_callers(atoi(optarg));
+            break;
+#endif
+#ifdef CONFIG_TCC_BCHECK
+        case TCC_OPTION_b:
+            s->do_bounds_check = 1;
+            s->do_debug = 1;
+            break;
+#endif
+        case TCC_OPTION_g:
+            s->do_debug = 1;
+            break;
+        case TCC_OPTION_c:
+            if (s->output_type)
+                tcc_warning("-c: some compiler action already specified (%d)", s->output_type);
+            s->output_type = TCC_OUTPUT_OBJ;
+            break;
+        case TCC_OPTION_d:
+            if (*optarg == 'D')
+                s->dflag = 1;
+            else {
+                if (s->warn_unsupported)
+                    goto unsupported_option;
+                tcc_error("invalid option -- '%s'", r);
+            }
+            break;
+#ifdef TCC_TARGET_ARM
+        case TCC_OPTION_float_abi:
+            /* tcc doesn't support soft float yet */
+            if (!strcmp(optarg, "softfp")) {
+                s->float_abi = ARM_SOFTFP_FLOAT;
+                tcc_undefine_symbol(s, "__ARM_PCS_VFP");
+            } else if (!strcmp(optarg, "hard"))
+                s->float_abi = ARM_HARD_FLOAT;
+            else
+                tcc_error("unsupported float abi '%s'", optarg);
+            break;
+#endif
+        case TCC_OPTION_static:
+            s->static_link = 1;
+            break;
+        case TCC_OPTION_std:
+    	    /* silently ignore, a current purpose:
+    	       allow to use a tcc as a reference compiler for "make test" */
+            break;
+        case TCC_OPTION_shared:
+    	    if (s->output_type)
+                tcc_warning("-shared: some compiler action already specified (%d)", s->output_type);
+            s->output_type = TCC_OUTPUT_DLL;
+            break;
+        case TCC_OPTION_soname:
+            s->soname = tcc_strdup(optarg);
+            break;
+        case TCC_OPTION_m:
+            s->option_m = 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 */
+    	    if (s->output_type)
+                tcc_warning("-r: some compiler action already specified (%d)", s->output_type);
+            s->option_r = 1;
+            s->output_type = TCC_OUTPUT_OBJ;
+            break;
+        case TCC_OPTION_isystem:
+            tcc_add_sysinclude_path(s, optarg);
+            break;
+        case TCC_OPTION_iwithprefix:
+            if (1) {
+                char buf[1024];
+                int buf_size = sizeof(buf)-1;
+                char *p = &buf[0];
+
+                char *sysroot = "{B}/";
+                int len = strlen(sysroot);
+                if (len > buf_size)
+                    len = buf_size;
+                strncpy(p, sysroot, len);
+                p += len;
+                buf_size -= len;
+
+                len = strlen(optarg);
+                if (len > buf_size)
+                    len = buf_size;
+                strncpy(p, optarg, len+1);
+                tcc_add_sysinclude_path(s, buf);
+            }
+            break;
+        case TCC_OPTION_nostdinc:
+            s->nostdinc = 1;
+            break;
+        case TCC_OPTION_nostdlib:
+            s->nostdlib = 1;
+            break;
+        case TCC_OPTION_print_search_dirs:
+            s->print_search_dirs = 1;
+            break;
+        case TCC_OPTION_run:
+    	    if (s->output_type)
+                tcc_warning("-run: some compiler action already specified (%d)", s->output_type);
+            s->output_type = TCC_OUTPUT_MEMORY;
+            tcc_set_options(s, optarg);
+            run = 1;
+            break;
+        case TCC_OPTION_v:
+            do ++s->verbose; while (*optarg++ == 'v');
+            break;
+        case TCC_OPTION_f:
+            if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
+                goto unsupported_option;
+            break;
+        case TCC_OPTION_W:
+            if (tcc_set_warning(s, optarg, 1) < 0 &&
+                s->warn_unsupported)
+                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 (linker_arg.size)
+                --linker_arg.size, cstr_ccat(&linker_arg, ',');
+            cstr_cat(&linker_arg, optarg);
+            cstr_ccat(&linker_arg, '\0');
+            break;
+        case TCC_OPTION_E:
+    	    if (s->output_type)
+                tcc_warning("-E: some compiler action already specified (%d)", s->output_type);
+            s->output_type = TCC_OUTPUT_PREPROCESS;
+            break;
+        case TCC_OPTION_P:
+            s->Pflag = atoi(optarg) + 1;
+            break;
+        case TCC_OPTION_MD:
+            s->gen_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);
+        case TCC_OPTION_s:
+            s->do_strip = 1;
+            break;
+        case TCC_OPTION_traditional:
+            break;
+        case TCC_OPTION_x:
+            if (*optarg == 'c')
+                filetype = TCC_FILETYPE_C;
+            else
+            if (*optarg == 'a')
+                filetype = TCC_FILETYPE_ASM_PP;
+            else
+            if (*optarg == 'n')
+                filetype = 0;
+            else
+                tcc_warning("unsupported language '%s'", optarg);
+            break;
+        case TCC_OPTION_O:
+            if (1) {
+                int opt = atoi(optarg);
+                char *sym = "__OPTIMIZE__";
+                if (opt)
+                    tcc_define_symbol(s, sym, 0);
+                else
+                    tcc_undefine_symbol(s, sym);
+            }
+            break;
+        case TCC_OPTION_pedantic:
+        case TCC_OPTION_pipe:
+            /* ignored */
+            break;
+        default:
+            if (s->warn_unsupported) {
+            unsupported_option:
+                tcc_warning("unsupported option '%s'", r);
+            }
+            break;
+        }
+    }
+
+    if (s->output_type == 0)
+	s->output_type = TCC_OUTPUT_EXE;
+
+    if (pthread && s->output_type != TCC_OUTPUT_OBJ)
+        tcc_set_options(s, "-lpthread");
+
+    if (s->output_type == TCC_OUTPUT_EXE)
+	tcc_set_linker(s, (const char *)linker_arg.data);
+    cstr_free(&linker_arg);
+
+    return optind;
+}
+
+LIBTCCAPI int tcc_set_options(TCCState *s, const char *str)
+{
+    const char *s1;
+    char **argv, *arg;
+    int argc, len;
+    int ret;
+
+    argc = 0, argv = NULL;
+    for(;;) {
+        while (is_space(*str))
+            str++;
+        if (*str == '\0')
+            break;
+        s1 = str;
+        while (*str != '\0' && !is_space(*str))
+            str++;
+        len = str - s1;
+        arg = tcc_malloc(len + 1);
+        pstrncpy(arg, s1, len);
+        dynarray_add((void ***)&argv, &argc, arg);
+    }
+    ret = tcc_parse_args(s, argc, argv);
+    dynarray_reset(&argv, &argc);
+    return ret;
+}
+
+PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time)
+{
+    double tt;
+    tt = (double)total_time / 1000000.0;
+    if (tt < 0.001)
+        tt = 0.001;
+    if (total_bytes < 1)
+        total_bytes = 1;
+    fprintf(stderr, "%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
+           tok_ident - TOK_IDENT, total_lines, total_bytes,
+           tt, (int)(total_lines / tt),
+           total_bytes / tt / 1000000.0);
+}
+
+PUB_FUNC void tcc_set_environment(TCCState *s)
+{
+    char * path;
+
+    path = getenv("C_INCLUDE_PATH");
+    if(path != NULL) {
+        tcc_add_include_path(s, path);
+    }
+    path = getenv("CPATH");
+    if(path != NULL) {
+        tcc_add_include_path(s, path);
+    }
+    path = getenv("LIBRARY_PATH");
+    if(path != NULL) {
+        tcc_add_library_path(s, path);
+    }
+}