configure.in

SFC游戏模拟器 snes9x 1.43 的原代码

AC_REVISION("$Id: configure.in,v 1.33 2004/03/20 20:01:43 anomie Exp $")
AC_INIT(snes9x.h)
dnl AC_CANONICAL_SYSTEM

dnl Some compatibility with Autoconf 2.50+. Not complete.
dnl newer Autoconf calls substr m4_substr
ifdef([substr], ,[m4_copy([m4_substr],[substr])])
dnl Autoconf 2.53+ hides their version numbers in m4_PACKAGE_VERSION.
ifdef([AC_ACVERSION], ,[m4_copy([m4_PACKAGE_VERSION],[AC_ACVERSION])])

AC_PROG_CC
AC_PROG_CXX
AC_LANG_CPLUSPLUS

dnl echo $cross_compiling

#FIXME: Warn about glide, opengl and aido mutually exclusivity.
#FIXME: Make svgalib build part of this and clean up the Makefile
	
AC_DEFUN([AC_SYS_COMPILER_FLAG],
[
  AC_MSG_CHECKING($1)
  AC_CACHE_VAL(snes9x_cv_option_$2,
  [
    OLD_CXXFLAGS="[$]CXXFLAGS"
    CXXFLAGS="[$]OLD_CXXFLAGS $1"
    old_ac_link="[$]ac_link"
    ac_link="[$]old_ac_link 2>conftezt.out.2"
    AC_TRY_RUN([
      int foo;
      int main(int argc, char **argv)
      {
        /* The following code triggs gcc:s generation of aline opcodes,
	 * which some versions of as does not support.
	 */
	if (argc > 0) argc = 0;
	return argc;
      }
    ],snes9x_cv_option_$2=yes,
      snes9x_cv_option_$2=no, [
      AC_TRY_LINK([], [], snes9x_cv_option_$2=yes, snes9x_cv_option_$2=no)
    ])
    CXXFLAGS="[$]OLD_CXXFLAGS"
    ac_link="[$]old_ac_link"
    if grep -i 'unrecognized option' <conftezt.out.2 >/dev/null; then
      snes9x_cv_option_$2=no
    elif grep -i 'unknown option' <conftezt.out.2 >/dev/null; then
      # cc/HPUX says the following regarding -q64:
      #
      # cc: warning 422: Unknown option "6" ignored.
      # cc: warning 422: Unknown option "4" ignored.
      snes9x_cv_option_$2=no
    elif grep -i 'optimizer bugs' <conftezt.out.2 >/dev/null; then
      # gcc/FreeBSD-4.6/alpha says the following regarding -O2:
      #
      # cc1: warning: 
      # ***
      # ***     The -O2 flag TRIGGERS KNOWN OPTIMIZER BUGS ON THIS PLATFORM
      # ***
      snes9x_cv_option_$2=no
    elif grep -i 'not found' <conftezt.out.2 >/dev/null; then
      # cc/AIX says the following regarding +O3:
      #
      # cc: 1501-228 input file +O3 not found
      snes9x_cv_option_$2=no
    elif grep -i 'ignored' <conftezt.out.2 >/dev/null; then
      # gcc/AIX says the following regarding -fpic:
      #
      # cc1: warning: -fpic ignored (all code is position independent)
      snes9x_cv_option_$2=no
    else :; fi
#    rm conftezt.out.2
  ])

  if test x"[$]snes9x_cv_option_$2" = "xyes" ; then
    $3="[$]$3 $1"
    case "$3" in
      OPTIMIZE)
        CXXFLAGS="[$]CXXFLAGS $1"
      ;;
    esac
    AC_MSG_RESULT(yes)
    $5
  else
    AC_MSG_RESULT(no)
    $4
  fi
])

AC_DEFUN(AC_MY_CHECK_TYPE,
[
AC_MSG_CHECKING([for $1])
AC_CACHE_VAL(ac_cv_type_$1,
[
AC_TRY_COMPILE([
#include <sys/types.h>

#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif

$3

],[
$1 tmp;
],ac_cv_type_$1=yes,ac_cv_type_$1=no)
])

if test $ac_cv_type_$1 = no; then
  AC_DEFINE($1,$2)
  AC_MSG_RESULT(no)
else
  AC_MSG_RESULT(yes)
fi
])

AC_MY_CHECK_TYPE(size_t,unsigned long)

AC_DEFUN([AC_ADD_XFLAGS],[
	CFLAGS="$CFLAGS $X_INCLUDES"
	CPPFLAGS="$CPPFLAGS $X_INCLUDES"
	LDFLAGS="$LDFLAGS $X_LDFLAGS $X_LIBS"
])


dnl 
dnl SNES9X_FEATURE_CLEAR()
dnl SNES9X_FEATURE(feature,text)
dnl

define(SNES9X_FEATURE_CLEAR,[
  rm snes9x_*.feature 2>/dev/null
])

define(SNES9X_FEATURE_RAW,[
  cat >snes9x_[$1].feature <<EOF
[$2]
EOF])

define([PAD_FEATURE],[substr([$1][................................],0,20) ])

define(SNES9X_FEATURE_3,[
  cat >snes9x_[$1].feature <<EOF
PAD_FEATURE([$2])[$3]
EOF])

define(SNES9X_FEATURE,[
  SNES9X_FEATURE_3(translit([[$1]],[. ()],[____]),[$1],[$2])
])

define(SNES9X_FEATURE_WITHOUT,[
  SNES9X_FEATURE([$1],[no (forced without)])
])

define(SNES9X_FEATURE_NODEP,[
  SNES9X_FEATURE([$1],[no (dependencies failed)])
])

define(SNES9X_FEATURE_OK,[
  SNES9X_FEATURE([$1],[yes])
])

dnl *****************************
dnl *** Execution begins here ***
dnl *****************************


dnl We want an absolute path to the source-dir.

case "$srcdir" in
    /*)
    ;;
    *)
	oldsrcdir="$srcdir"
	srcdir="`cd \"$srcdir\";pwd`"
	AC_MSG_WARN([
Converted $oldsrcdir to $srcdir,
If this does not work, please use an absolute path to the configure script. 
])
    ;;
esac


dnl Test what compiler flags we should use

AC_ARG_WITH(debug,    [  --with(out)-debug       Leave debug information in the final binary (default: without)],[],[with_debug=no])

OPTIMIZE="${OPTFLAGS-}"
RTTIFLAG=""

if test yes = "$with_debug" ; then
  AC_SYS_COMPILER_FLAG(-g, debuginfo, OPTIMIZE)
fi

AC_ARG_WITH(mcpu,     [  --with-mcpu             Use the specified value for the -mcpu flag (default: auto)],[],[with_mcpu=auto])
dnl AC_ARG_WITH(march,    [  --with-march         Use the specified value for the -march flag (default: none, but see --with-mcpu)],[],[with_march=no])
if test "${with_march+set}" != set; then
  with_march=no
fi

if test no = "$with_march" ; then
  if test auto = "$with_mcpu" ; then
    AC_SYS_COMPILER_FLAG(-mcpu=ultrasparc, ultrasparc, OPTIMIZE, [
      AC_SYS_COMPILER_FLAG(-mcpu=supersparc, supersparc, OPTIMIZE)
    ])
  elif test no != "$with_mcpu" ; then
    AC_SYS_COMPILER_FLAG(-mcpu=$with_mcpu, custom_mcpu, OPTIMIZE, [AC_MSG_ERROR([Please specify a working value for --with-mcpu, or use --with-mcpu=auto])])
    unset snes9x_cv_option_custom_mcpu
  fi
else
  if test auto != "$with_mcpu" ; then
    AC_MSG_WARN([--with(out)-mcpu ignored because --with-march specified])
  fi
  AC_MSG_WARN([You specified --with-march. I hope you know what you're doing, since])
  AC_MSG_WARN([*** MISUSING THIS OPTION WILL CAUSE SNES9X TO CRASH! ***])
  AC_SYS_COMPILER_FLAG(-march=$with_march, custom_march, OPTIMIZE, [AC_MSG_ERROR([Please specify a working value for --with-march, or use --without-march])])
  unset snes9x_cv_option_custom_march
fi

AC_SYS_COMPILER_FLAG(-O2, o2, OPTIMIZE, [
  AC_SYS_COMPILER_FLAG(-O1, o1, OPTIMIZE)
])

AC_SYS_COMPILER_FLAG(-fomit-frame-pointer, omit_frame_pointer, OPTIMIZE)
AC_SYS_COMPILER_FLAG(-fno-exceptions, no_exceptions, OPTIMIZE)
AC_SYS_COMPILER_FLAG(-Wall, Wall, OPTIMIZE)
AC_SYS_COMPILER_FLAG(-W, W, OPTIMIZE)
AC_SYS_COMPILER_FLAG(-pedantic, pedantic, OPTIMIZE)
dnl FIXME: Most of these should be fixed, but several are part of the API.
AC_SYS_COMPILER_FLAG(-Wno-unused-parameter, Wno_unused_parameter, OPTIMIZE)
AC_SYS_COMPILER_FLAG(-pipe, pipe, OPTIMIZE)
AC_SYS_COMPILER_FLAG(-fno-rtti, no_rtti, RTTIFLAG)

dnl AC_ARG_WITH(extra_opt,[  --with(out)-extra-opt     Use extra optimization flags (default: none)],[],[with_extra_opt=no])
if test "${with_extra_opt+set}" != set; then
  with_extra_opt=no
fi
if test no != "$with_extra_opt" ; then
  AC_MSG_WARN([You specified --with-extra-opt. I hope you know what you're doing, since])
  AC_MSG_WARN([*** MISUSING THIS OPTION WILL CAUSE SNES9X TO CRASH! ***])
  AC_SYS_COMPILER_FLAG($with_extra_opt, custom_opt, OPTIMIZE, [AC_MSG_ERROR([Please specify a working value for --with-extra-opt, or use --without-extra-opt])])
  unset snes9x_cv_option_custom_opt
fi


ZSNESFX='#ZSNESFX=1'
ZSNESC4='#ZSNESC4=1'
ASMCPU='#ASMCPU=1'
ASMKREED='#ASMKREED=1'
SDD1_DECOMP='#SDD1_DECOMP=1'
JMA='#JMA=1'
SPC700ASM='#SPC700ASM=1'
I386SPC=''
CPUINC=''
DREAMCAST='#DREAMCAST=1'

SYSDEFINES=''
SYSLIBS=''
NASM='not_found'


dnl Display output
AC_ARG_WITH(glide,    [  --with(out)-glide       Use 3Dfx glide for output (default: without)],[],[with_glide=no])
AC_ARG_WITH(opengl,   [  --with(out)-opengl      Use OpenGL for output (default: without)],[],[with_opengl=no])
AC_ARG_WITH(aido,     [  --with(out)-aido        Use a shared memory area for output (default: without)],[],[with_aido=no])
GLIDE='#GLIDE=1'
AIDO='#AIDO=1'
OPENGL='#OPENGL=1'
snes9x_info_display=X11

if test yes = "$with_glide" ; then
  GLIDE='GLIDE=1'
  snes9x_info_display=Glide
else
  if test yes = "$with_opengl" ; then
    OPENGL='OPENGL=1'
    snes9x_info_display="OpenGL on X11"
  else
    if test yes = "$with_aido" ; then
      AIDO='AIDO=1'
      snes9x_info_display="X11 and AIDO"
    fi
  fi
fi



AC_MSG_CHECKING(if the CPU is IA32)
AC_CACHE_VAL(snes9x_cv_i386_cpu, [
  AC_TRY_COMPILE([
#if (defined (__i386__) || defined (__i486__) ||\
     defined (__i586__) || defined (__WIN32__) || defined (__DJGPP))
/* */
#else
#error Not i386.
#endif
  ], [], snes9x_cv_i386_cpu=yes, snes9x_cv_i386_cpu=no)])
AC_MSG_RESULT($snes9x_cv_i386_cpu)

AC_MSG_CHECKING(if the OS is Linux)
AC_CACHE_VAL(snes9x_cv_linux_os, [
  AC_TRY_COMPILE([
#ifdef __linux
/* */
#else
#error Not Linux.
#endif
  ], [], snes9x_cv_linux_os=yes, snes9x_cv_linux_os=no)])
AC_MSG_RESULT($snes9x_cv_linux_os)

AC_MSG_CHECKING(if the OS is HP-UX)
AC_CACHE_VAL(snes9x_cv_hpux_os, [
  AC_TRY_COMPILE([
#ifdef __hpux
/* */
#else
#error Not Hpux.
#endif
  ], [], snes9x_cv_hpux_os=yes, snes9x_cv_hpux_os=no)])
AC_MSG_RESULT($snes9x_cv_hpux_os)

AC_MSG_CHECKING(if the OS is MS Windows)
AC_CACHE_VAL(snes9x_cv_win32_os, [
  AC_TRY_COMPILE([
#if defined (__WIN32__)
/* */
#else
#error Not win32.
#endif
  ], [], snes9x_cv_win32_os=yes, snes9x_cv_win32_os=no)])
AC_MSG_RESULT($snes9x_cv_win32_os)


dnl Enable assembler optimizations if CPU is x86
AC_ARG_WITH(assembler,[  --with(out)-assembler   Use assembler cores if available (default: with)],[],[with_assembler=yes])

if test yes = "$with_assembler"; then
  dnl Set assembler to !nasm on Windows
  if test yes = "$snes9x_cv_win32_os"; then
    NASM='rntcl'
    SNES9X_FEATURE([using asm cores],[no (using rntcl)])
  else
    AC_PATH_PROG(prog_nasm, nasm, no)
    if test "x$ac_cv_path_prog_nasm" = "xno"; then
      if test yes = "$snes9x_cv_i386_cpu"; then
        AC_MSG_WARN([No nasm found. Will build without assembler optimizations.])
        SNES9X_FEATURE([using asm cores],[no (nasm not found)])
      fi
    else
      if test yes = "$snes9x_cv_i386_cpu"; then
        NASM="$ac_cv_path_prog_nasm"
      fi
    fi
  fi
fi

if test $NASM != "not_found"; then
  ZSNESFX='ZSNESFX=1'
  ZSNESC4='ZSNESC4=1'
  ASMCPU='ASMCPU=1'
  ASMKREED='ASMKREED=1'
#  SPC700ASM='SPC700ASM=1'
  I386SPC='i386/SPC.O'
  CPUINC='-Ii386'
  SNES9X_FEATURE([using asm cores],[yes])
else
  SYSDEFINES="$SYSDEFINES"' -DNOASM'
  if test yes != "$with_assembler"; then
    SNES9X_FEATURE_WITHOUT([using asm cores])
  else if test yes != "$snes9x_cv_i386_cpu"; then
    SNES9X_FEATURE([using asm cores],[no (not available for your CPU)])
  fi; fi
fi

dnl Enable joystick support on Linux
AC_ARG_WITH(joystick, [  --with(out)-joystick    Enable joystick support if available (default: with)],[],[with_joystick=yes])

if test yes = "$snes9x_cv_linux_os" -a yes = "$with_joystick"; then
   JOYDEFINES=' -DJOYSTICK_SUPPORT'
else
   with_joystick="no"
fi

dnl Enable debugger
AC_ARG_WITH(debugger, [  --with(out)-debugger    Enable debugger (default: without)],[],[with_debugger=no])
if test yes = "$with_debugger"; then
   SYSDEFINES="$SYSDEFINES"' -DDEBUGGER'
fi

dnl Enable Dreamcast build (FIXME: Make this a more normal cross compile.)
AC_ARG_WITH(dreamcast,[  --with(out)-dreamcast   Build for Dreamcast (default: without)],[],[with_dreamcast=no])
if test yes = "$with_dreamcast"; then
   DREAMCAST='DREAMCAST=1'
   CPUINC='-Ish'
fi

dnl Enable SDD1 decompression if requested
AC_ARG_WITH(sdd1-decomp,[  --with(out)-sdd1-decomp Use SDD1 decompression (default: with)],[],[with_sdd1_decomp=yes])
if test yes = "$with_sdd1_decomp"; then
   SDD1_DECOMP='SDD1_DECOMP=1'
fi

dnl Enable debugger
AC_ARG_WITH(jmadecomp, [  --with(out)-jma    Enable JMA archive decompression (default: without)],[],[with_jmadecomp=no])
if test yes = "$with_jmadecomp"; then
   JMA='JMA=1'
fi

dnl Enable maxcount hack
AC_ARG_WITH(maxcount, [  --with(out)-maxcount    Enable maxcount debugger (default: without)],[],[with_maxcount=no])
if test yes = "$with_maxcount"; then
   SYSDEFINES="$SYSDEFINES"' -DDEBUG_MAXCOUNT'
fi

dnl Enable maxcount hack
dnl FIXME: There is a third case (OLD) that is missed with this.
AC_ARG_WITH(newblend, [  --with(out)-newblend    New colour blender (default: without)],[],[with_newblend=no])
if test yes = "$with_newblend"; then
   SYSDEFINES="$SYSDEFINES"' -DNEW_COLOUR_BLENDING'
else