* Added glue code to compile libcaca without a libc and build applications

as multiboot kernels.
il y a 18 ans · 15ac34a918
--- a/COPYING.GPL
+++ b/COPYING.GPL
@@ -0,0 +1,340 @@
 		    GNU GENERAL PUBLIC LICENSE
 		       Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
 	51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

 			    Preamble

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  `Gnomovision' (which makes passes at compilers) written by James Hacker.

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  Ty Coon, President of Vice

 This General Public License does not permit incorporating your program into
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--- a/Makefile.am
+++ b/Makefile.am
@@ -1,9 +1,9 @@
 # $Id$

 SUBDIRS = cucul caca src test doc
 SUBDIRS = kernel cucul caca src test doc
 DIST_SUBDIRS = $(SUBDIRS) autotools debian msvc

 EXTRA_DIST = NOTES COPYING.LGPL bootstrap build-dos build-win32 caca-config.in libcaca.spec
 EXTRA_DIST = NOTES COPYING.GPL COPYING.LGPL bootstrap build-dos build-kernel build-win32 caca-config.in libcaca.spec
 AUTOMAKE_OPTIONS = dist-bzip2

 bin_SCRIPTS = caca-config
--- a/+ 30
+++ b/+ 30
@@ -0,0 +1,30 @@
 #! /bin/sh

 ##  Kernel-mode libcaca compilation script -- Sam Hocevar <sam@zoy.org>
 ##  $Id: build-dos 333 2006-03-07 12:39:34Z sam $

 set -x
 set -e

 CFLAGS="-fno-builtin -O2 -I. -I.. -Wall"
 CPPFLAGS="-D__KERNEL__ -nostdinc -include kernel/kernel.h"
 LDFLAGS="-nostdlib -Wl,-N -Wl,-Ttext -Wl,100000"

 ./configure --disable-slang --disable-ncurses --disable-win32 \
            --disable-conio --disable-x11 --disable-gl --disable-network \
            --enable-vga --disable-imlib2 --disable-doc \
            --host i386

 (cd cucul && make)
 (cd caca && make)

 (cd src && make cacafire-aafire.o)

 (cd kernel &&
    gcc $CFLAGS -c multiboot.S -o multiboot.o
    gcc $CFLAGS $CPPFLAGS -c kernel.c -o kernel.o)

 gcc $LDFLAGS -o src/cacafire kernel/multiboot.o kernel/kernel.o src/cacafire-aafire.o caca/.libs/libcaca.a cucul/.libs/libcucul.a

 objcopy -O binary src/cacafire cacafire.boot

--- a/caca/time.c
+++ b/caca/time.c
@@ -19,18 +19,18 @@

 #include "config.h"

 #include <stdlib.h>
 #if defined(HAVE_SYS_TIME_H)
 #   include <sys/time.h>
 #endif
 #include <time.h>

 #if defined(USE_WIN32)
 #   include <windows.h>
 #endif

 #if defined(HAVE_UNISTD_H)
 #   include <unistd.h>
 #if !defined(__KERNEL__)
 #   include <stdlib.h>
 #   if defined(HAVE_SYS_TIME_H)
 #       include <sys/time.h>
 #   endif
 #   include <time.h>
 #   if defined(USE_WIN32)
 #       include <windows.h>
 #   endif
 #   if defined(HAVE_UNISTD_H)
 #       include <unistd.h>
 #   endif
 #endif

 #include "caca.h"
@@ -43,7 +43,7 @@ void _caca_sleep(unsigned int usec)
 #elif defined(HAVE_SLEEP)
        Sleep(usec / 1000);
 #else
        SLEEP
        /* SLEEP */
 #endif
 }

--- a/configure.ac
+++ b/configure.ac
@@ -11,6 +11,7 @@ AM_CONFIG_HEADER(config.h)

 AM_PROG_CC_C_O
 AC_PROG_CPP
 AM_PROG_AS

 AC_LIBTOOL_WIN32_DLL
 AM_PROG_LIBTOOL
@@ -38,6 +39,8 @@ AC_ARG_ENABLE(gl,
  [  --enable-gl             OpenGL support (autodetected)])
 AC_ARG_ENABLE(network,
  [  --enable-network        Network support (autodetected)])
 AC_ARG_ENABLE(vga,
  [  --enable-vga            VGA support (default disabled)])

 dnl example programs features
 AC_ARG_ENABLE(imlib2,
@@ -47,7 +50,7 @@ dnl conditional builds
 AC_ARG_ENABLE(doc,
  [  --enable-doc            build documentation (needs doxygen and LaTeX)])

 AC_CHECK_HEADERS(signal.h sys/ioctl.h sys/time.h inttypes.h endian.h unistd.h)
 AC_CHECK_HEADERS(stdio.h stdarg.h signal.h sys/ioctl.h sys/time.h inttypes.h endian.h unistd.h)
 AC_CHECK_FUNCS(signal ioctl vsnprintf getenv putenv strcasecmp)
 AC_CHECK_FUNCS(usleep gettimeofday)

@@ -168,6 +171,16 @@ if test "${enable_ncurses}" != "no"; then
  fi
 fi

 if test "${enable_vga}" = "yes"; then
  ac_cv_my_have_vga="yes"
  CPPFLAGS="${CPPFLAGS} -I. -D__KERNEL__ -nostdinc -include kernel/kernel.h"
  CFLAGS="${CFLAGS} -fno-builtin -O2 -Wall"
  CCASFLAGS="${CCASFLAGS} -I."
  LDFLAGS="${LDFLAGS} -nostdlib -Wl,-N -Wl,-Ttext -Wl,100000"
  AC_DEFINE(USE_VGA, 1, Define to activate the VGA backend driver)
  CACA_DRIVERS="${CACA_DRIVERS} vga"
 fi

 AC_MSG_CHECKING(valid output drivers)
 if test -z "${CACA_DRIVERS}"; then
  AC_MSG_RESULT(no)
@@ -244,6 +257,7 @@ AM_CONDITIONAL(USE_LATEX, test "${LATEX}" != "no")

 AC_CONFIG_FILES([
  Makefile
  kernel/Makefile
  cucul/Makefile
  caca/Makefile
  src/Makefile
--- a/cucul/bitmap.c
+++ b/cucul/bitmap.c
@@ -19,15 +19,16 @@

 #include "config.h"

 #if defined(HAVE_ENDIAN_H)
 #   include <endian.h>
 #if !defined(__KERNEL__)
 #   if defined(HAVE_ENDIAN_H)
 #       include <endian.h>
 #   endif
 #   include <stdio.h>
 #   include <stdlib.h>
 #   include <limits.h>
 #   include <string.h>
 #endif

 #include <stdio.h>
 #include <stdlib.h>
 #include <limits.h>
 #include <string.h>

 #include "cucul.h"
 #include "cucul_internals.h"

--- a/cucul/box.c
+++ b/cucul/box.c
@@ -19,7 +19,9 @@

 #include "config.h"

 #include <stdlib.h>
 #if !defined(__KERNEL__)
 #   include <stdlib.h>
 #endif

 #include "cucul.h"
 #include "cucul_internals.h"
--- a/cucul/char.c
+++ b/cucul/char.c
@@ -19,19 +19,20 @@

 #include "config.h"

 #include <stdio.h> /* BUFSIZ */
 #include <string.h>
 #include <stdlib.h>
 #if defined(HAVE_UNISTD_H)
 #   include <unistd.h>
 #endif
 #include <stdarg.h>

 #if defined(HAVE_SIGNAL_H)
 #   include <signal.h>
 #endif
 #if defined(HAVE_SYS_IOCTL_H)
 #   include <sys/ioctl.h>
 #if !defined(__KERNEL__)
 #   include <stdio.h> /* BUFSIZ */
 #   include <string.h>
 #   include <stdlib.h>
 #   include <stdarg.h>
 #   if defined(HAVE_UNISTD_H)
 #       include <unistd.h>
 #   endif
 #   if defined(HAVE_SIGNAL_H)
 #       include <signal.h>
 #   endif
 #   if defined(HAVE_SYS_IOCTL_H)
 #       include <sys/ioctl.h>
 #   endif
 #endif

 #include "cucul.h"
--- a/cucul/conic.c
+++ b/cucul/conic.c
@@ -20,7 +20,9 @@

 #include "config.h"

 #include <stdlib.h>
 #if !defined(__KERNEL__)
 #   include <stdlib.h>
 #endif

 #include "cucul.h"
 #include "cucul_internals.h"
--- a/cucul/cucul.c
+++ b/cucul/cucul.c
@@ -20,8 +20,10 @@

 #include "config.h"

 #include <stdlib.h>
 #include <string.h>
 #if !defined(__KERNEL__)
 #   include <stdlib.h>
 #   include <string.h>
 #endif

 #include "cucul.h"
 #include "cucul_internals.h"
--- a/cucul/cucul_internals.h
+++ b/cucul/cucul_internals.h
@@ -20,12 +20,12 @@
 #ifndef __CUCUL_INTERNALS_H__
 #define __CUCUL_INTERNALS_H__

 #if defined(HAVE_INTTYPES_H) || defined(_DOXYGEN_SKIP_ME)
 #if defined(HAVE_INTTYPES_H) && !defined(__KERNEL__)
 #   include <inttypes.h>
 #elif !defined(CUSTOM_INTTYPES)
 #elif !defined(CUSTOM_INTTYPES) && !defined(_DOXYGEN_SKIP_ME)
 #   define CUSTOM_INTTYPES
 typedef unsigned char uint8_t;
 typedef unsigned char uint16_t;
 typedef unsigned short uint16_t;
 typedef unsigned int uint32_t;
 #endif

--- a/cucul/export.c
+++ b/cucul/export.c
@@ -21,9 +21,11 @@

 #include "config.h"

 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #if !defined(__KERNEL__)
 #   include <stdlib.h>
 #   include <stdio.h>
 #   include <string.h>
 #endif

 #include "cucul.h"
 #include "cucul_internals.h"
--- a/cucul/line.c
+++ b/cucul/line.c
@@ -20,7 +20,9 @@

 #include "config.h"

 #include <stdlib.h>
 #if !defined(__KERNEL__)
 #   include <stdlib.h>
 #endif

 #include "cucul.h"
 #include "cucul_internals.h"
--- a/cucul/math.c
+++ b/cucul/math.c
@@ -19,7 +19,9 @@

 #include "config.h"

 #include <stdlib.h>
 #if !defined(__KERNEL__)
 #   include <stdlib.h>
 #endif

 #include "cucul.h"
 #include "cucul_internals.h"
--- a/cucul/sprite.c
+++ b/cucul/sprite.c
@@ -19,9 +19,11 @@

 #include "config.h"

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #if !defined(__KERNEL__)
 #   include <stdio.h>
 #   include <stdlib.h>
 #   include <string.h>
 #endif

 #include "cucul.h"
 #include "cucul_internals.h"
--- a/cucul/triangle.c
+++ b/cucul/triangle.c
@@ -19,7 +19,9 @@

 #include "config.h"

 #include <stdlib.h>
 #if !defined(__KERNEL__)
 #   include <stdlib.h>
 #endif

 #include "cucul.h"
 #include "cucul_internals.h"
--- a/kernel/Makefile.am
+++ b/kernel/Makefile.am
@@ -0,0 +1,12 @@
 # $Id: Makefile.am 326 2006-03-06 20:57:14Z sam $

 lib_LTLIBRARIES = libkernel.la

 libkernel_la_SOURCES = \
 	kernel.c \
 	kernel.h \
 	multiboot.S \
 	multiboot.h \
 	$(NULL)
 libkernel_la_LDFLAGS = -no-undefined

--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -0,0 +1,204 @@
 /*
 *  libcucul      Unicode canvas library
 *  libcaca       ASCII-Art library
 *  Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
 *                All Rights Reserved
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the Do What The Fuck You Want To
 *  Public License, Version 2, as published by Sam Hocevar. See
 *  http://sam.zoy.org/wtfpl/COPYING for more details.
 */

 /** \file kernel.c
 *  \version \$Id$
 *  \author Sam Hocevar <sam@zoy.org>
 *  \brief Kernel features
 *
 *  This file contains replacement functions for the standard C library
 *  that must be used when building libcucul and libcaca into a kernel.
 */

 #include "config.h"

 #ifdef __KERNEL__

 /* Our memory mapping */
 static uint32_t *freemem = (uint32_t*) 0x00200000;

 /* Multiboot kernel entry point */
 void cmain(unsigned long int magic, unsigned long int addr)
 {
    char *argv[] = { NULL };
    int argc = 0;
    main(argc, argv);
 }

 /* stdlib.h functions */
 void *malloc(size_t size)
 {
    uint32_t *p = freemem;
    size = (size + 0x7) / 4;
    *p = size;
    freemem += size + 1;
    return p + 1;
 }

 void free(void *ptr)
 {
    return;
 }

 void *realloc(void *ptr, size_t size)
 {
    uint32_t oldsize = ((uint32_t *)ptr)[-1];
    void *p;
    if(oldsize >= size)
        return ptr;

    p = malloc(size);
    memcpy(p, ptr, oldsize);
    return p;
 }

 char *getenv(const char *name)
 {
    return NULL;
 }

 int rand(void)
 {
    static int seed = 0x68743284;
    seed = (seed * 0x7f32ba17) ^ 0xf893a735;
    return seed % RAND_MAX;
 }

 int abs(int j)
 {
    if(j < 0)
        return -j;
    return j;
 }

 void exit(int status)
 {
    /* FIXME: reboot? */
    while(1);
 }

 /* string.h functions */
 void *memset(void *s, int c, size_t n)
 {
    uint8_t *ptr = s;

    while(n--)
        *ptr++ = c;

    return s;
 }

 void *memcpy(void *dest, const void *src, size_t n)
 {
    uint8_t *destptr = dest;
    uint8_t const *srcptr = src;

    while(n--)
        *destptr++ = *srcptr++;

    return dest;
 }

 size_t strlen(const char *s)
 {
    int len = 0;

    while(*s++)
        len++;

    return len;
 }

 int strcasecmp(const char *s1, const char *s2)
 {
    /* FIXME */
    return -1;
 }

 /* stdarg.h functions */
 int vsnprintf(char *str, size_t size, const char *format, va_list ap)
 {
    /* FIXME */
    return 0;
 }

 /* stdio.h functions */
 FILE *fopen(const char *path, const char *mode)
 {
    /* FIXME */
    return NULL;
 }

 int feof(FILE *stream)
 {
    /* FIXME */
    return 0;
 }

 char *fgets(char *s, int size, FILE *stream)
 {
    /* FIXME */
    return NULL;
 }

 int fclose(FILE *fp)
 {
    /* FIXME */
    return 0;
 }

 int printf(const char *format, ...)
 {
    /* FIXME */
    return 0;
 }

 int sprintf(char *str, const char *format, ...)
 {
    /* FIXME */
    return 0;
 }

 int sscanf(const char *str, const char *format, ...)
 {
    /* FIXME */
    return 0;
 }

 /* unistd.h functions */
 void usleep(unsigned long usec)
 {
    /* FIXME */
    return;
 }

 /* time.h functions */
 int gettimeofday(struct timeval *tv, struct timezone *tz)
 {
    static int usec = 0;
    static int sec = 0;

    /* FIXME */
    usec += 10000;
    if(usec > 1000000)
    {
        sec++;
        usec -= 1000000;
    }

    tv->tv_sec = sec;
    tv->tv_usec = usec;

    return 0;
 }

 #endif /* __KERNEL__ */
--- a/kernel/kernel.h
+++ b/kernel/kernel.h
@@ -0,0 +1,95 @@
 /*
 *  libcucul      Unicode canvas library
 *  libcaca       ASCII-Art library
 *  Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
 *                All Rights Reserved
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the Do What The Fuck You Want To
 *  Public License, Version 2, as published by Sam Hocevar. See
 *  http://sam.zoy.org/wtfpl/COPYING for more details.
 */

 /** \file kernel.h
 *  \version \$Id$
 *  \author Sam Hocevar <sam@zoy.org>
 *  \brief Kernel features
 *
 *  This file contains replacement functions for the standard C library
 *  that must be used when building libcucul and libcaca into a kernel.
 */

 /* Various defines */
 #define NULL ((void *)0)
 #define BUFSIZ 4096
 #define RAND_MAX ((unsigned int)0x8000000)
 #define INT_MAX ((int)0x7fffffff)
 #define __BYTE_ORDER 1
 #define __BIG_ENDIAN 2

 /* Various typedefs -- some are x86-specific */
 #define CUSTOM_INTTYPES
 typedef unsigned char uint8_t;
 typedef unsigned short uint16_t;
 typedef unsigned int uint32_t;
 typedef unsigned int uintptr_t;

 typedef unsigned int size_t;

 typedef struct file
 {
    void *mem;
 } FILE;

 struct timeval {
    int tv_sec;
    int tv_usec;
 };

 struct timezone {
    int tz_minuteswest;
    int tz_dsttime;
 };

 /* Multiboot kernel entry point */
 void cmain(unsigned long int magic, unsigned long int addr);

 /* The application's entry point */
 int main(int argc, char *argv[]);

 /* stdlib.h functions */
 void *malloc(size_t size);
 void free(void *ptr);
 void *realloc(void *ptr, size_t size);
 char *getenv(const char *name);
 int rand(void);
 int abs(int j);
 void exit(int status);

 /* string.h functions */
 void *memset(void *s, int c, size_t n);
 void *memcpy(void *dest, const void *src, size_t n);
 size_t strlen(const char *s);
 int strcasecmp(const char *s1, const char *s2);

 /* stdarg.h functions */
 typedef void * va_list;
 #define va_start(v,a) v = (void *)((uintptr_t)(&a) + sizeof(a))
 #define va_end(v)
 int vsnprintf(char *str, size_t size, const char *format, va_list ap);

 /* stdio.h functions */
 FILE *fopen(const char *path, const char *mode);
 int feof(FILE *stream);
 char *fgets(char *s, int size, FILE *stream);
 int fclose(FILE *fp);
 int printf(const char *format, ...);
 int sprintf(char *str, const char *format, ...);
 int sscanf(const char *str, const char *format, ...);

 /* unistd.h functions */
 void usleep(unsigned long usec);

 /* time.h functions */
 int gettimeofday(struct timeval *tv, struct timezone *tz);

--- a/kernel/multiboot.S
+++ b/kernel/multiboot.S
@@ -0,0 +1,73 @@
 /* boot.S - bootstrap the kernel */
 /* Copyright (C) 1999  Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
 
   This program 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 General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

 #define ASM	1
 #include <multiboot.h>
 	
 	.text

 	.code32
 	.globl	start, _start

 	/* This entry is not used actually.  */
 start:
 _start:
 	jmp	multiboot_entry

 	/* Align 32 bits boundary.  */
 	.align	4
 	
 	/* Multiboot header.  */
 multiboot_header:
 	/* magic */
 	.long	MULTIBOOT_HEADER_MAGIC
 	/* flags */
 	.long	MULTIBOOT_HEADER_FLAGS
 	/* checksum */
 	.long	-(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
 	/* header_addr */
 	.long	multiboot_header
 	/* load_addr */
 	.long	_start
 	/* load_end_addr */
 	.long	_edata
 	/* bss_end_addr */
 	.long	_end
 	/* entry_addr */
 	.long	multiboot_entry

 multiboot_entry:
 	/* Initialize the stack pointer.  */
 	movl	$(stack + STACK_SIZE), %esp

 	/* Reset EFLAGS.  */
 	pushl	$0
 	popf

 	/* Push the pointer to the Multiboot information structure.  */
 	pushl	%ebx
 	/* Push the magic value.  */
 	pushl	%eax

 	/* Now enter the C main function...  */
 	call	EXT_C(cmain)

 loop:	hlt
 	jmp	loop

 	/* Our stack area.  */
 	.comm	stack, STACK_SIZE
--- a/kernel/multiboot.h
+++ b/kernel/multiboot.h
@@ -0,0 +1,115 @@
 /* multiboot.h - the header for Multiboot */
 /* Copyright (C) 1999  Free Software Foundation, Inc.
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program 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 General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

 /* Macros.  */

 /* The magic number for the Multiboot header.  */
 #define MULTIBOOT_HEADER_MAGIC		0x1BADB002

 /* The flags for the Multiboot header.  */
 #define MULTIBOOT_HEADER_FLAGS		0x00010003

 /* The magic number passed by a Multiboot-compliant boot loader.  */
 #define MULTIBOOT_BOOTLOADER_MAGIC	0x2BADB002

 /* The size of our stack (16KB).  */
 #define STACK_SIZE			0x4000

 /* C symbol format. HAVE_ASM_USCORE is defined by configure.  */
 #ifdef HAVE_ASM_USCORE
 # define EXT_C(sym)			_ ## sym
 #else
 # define EXT_C(sym)			sym
 #endif

 #ifndef ASM
 /* Do not include here in boot.S.  */

 /* Types.  */

 /* The Multiboot header.  */
 typedef struct multiboot_header
 {
  unsigned long magic;
  unsigned long flags;
  unsigned long checksum;
  unsigned long header_addr;
  unsigned long load_addr;
  unsigned long load_end_addr;
  unsigned long bss_end_addr;
  unsigned long entry_addr;
 } multiboot_header_t;

 /* The symbol table for a.out.  */
 typedef struct aout_symbol_table
 {
  unsigned long tabsize;
  unsigned long strsize;
  unsigned long addr;
  unsigned long reserved;
 } aout_symbol_table_t;

 /* The section header table for ELF.  */
 typedef struct elf_section_header_table
 {
  unsigned long num;
  unsigned long size;
  unsigned long addr;
  unsigned long shndx;
 } elf_section_header_table_t;

 /* The Multiboot information.  */
 typedef struct multiboot_info
 {
  unsigned long flags;
  unsigned long mem_lower;
  unsigned long mem_upper;
  unsigned long boot_device;
  unsigned long cmdline;
  unsigned long mods_count;
  unsigned long mods_addr;
  union
  {
    aout_symbol_table_t aout_sym;
    elf_section_header_table_t elf_sec;
  } u;
  unsigned long mmap_length;
  unsigned long mmap_addr;
 } multiboot_info_t;

 /* The module structure.  */
 typedef struct module
 {
  unsigned long mod_start;
  unsigned long mod_end;
  unsigned long string;
  unsigned long reserved;
 } module_t;

 /* The memory map. Be careful that the offset 0 is base_addr_low
   but no size.  */
 typedef struct memory_map
 {
  unsigned long size;
  unsigned long base_addr_low;
  unsigned long base_addr_high;
  unsigned long length_low;
  unsigned long length_high;
  unsigned long type;
 } memory_map_t;

 #endif /* ! ASM */
--- a/src/aafire.c
+++ b/src/aafire.c
@@ -24,9 +24,11 @@

 #ifdef LIBCACA
 #include "config.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #if !defined(__KERNEL__)
 #   include <stdio.h>
 #   include <stdlib.h>
 #   include <string.h>
 #endif
 #include "caca.h"
 #else
 #include <stdio.h>