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dnl
dnl Configure for Xnp2
dnl

dnl require autoconf 2.59
AC_PREREQ(2.59)
AC_REVISION($Revision: 1.34 $)

AC_INIT(Xnp2,0.83-20120207,nonakap@gmail.com,xnp2)
AM_INIT_AUTOMAKE([no-define no-dist no-installinfo subdir-objects])
AC_CONFIG_SRCDIR([../np2ver.h])
AC_CONFIG_HEADERS(config.h)
AC_CANONICAL_HOST

dnl
dnl Checks for programs.
dnl
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_GCC_TRADITIONAL
AC_PROG_RANLIB
AC_PROG_INSTALL

dnl
dnl Checks for header files.
dnl
AC_STDC_HEADERS
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADERS([fcntl.h limits.h malloc.h stddef.h stdlib.h string.h sys/ioctl.h sys/param.h sys/socket.h sys/time.h termios.h unistd.h])

dnl
dnl Checks for typedefs, structures, and compiler characteristics.
dnl
AC_C_BIGENDIAN
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_HEADER_TIME
AC_STRUCT_TM
AC_C_VOLATILE
AC_CHECK_TYPES([ptrdiff_t])
AC_SYS_LARGEFILE
AC_C_CHAR_UNSIGNED

dnl
dnl Check GCC
dnl
AM_CONDITIONAL(HAVE_GCC,test x"$GCC" = "xyes")

dnl
dnl Checks for library functions.
dnl
AC_FUNC_CLOSEDIR_VOID
AC_FUNC_MALLOC
AC_FUNC_MEMCMP
AC_FUNC_STAT
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([gettimeofday memset mkdir strcasecmp strdup strerror strtol])

dnl
dnl Checks for math library functions.
dnl
AC_CHECK_FUNCS(floor,,AC_CHECK_LIB(m,floor))
AC_CHECK_FUNCS(pow,,AC_CHECK_LIB(m,pow))
AC_CHECK_FUNCS(sqrt,,AC_CHECK_LIB(m,sqrt))

dnl
dnl Checks for X
dnl
AC_PATH_X
AC_PATH_XTRA
AC_SUBST(XLIB,"")
if test x"$no_x" != x"yes"; then
  XLIB="-lX11"
elif test x"$have_x" = x"no"; then
  PKG_CHECK_MODULES([X],[x11 xext],[have_x=yes;no_x=no],[have_x=no;no_x=yes])
fi

dnl
dnl Xnp2 configure options.
dnl
AC_ARG_ENABLE(sdl,
  AC_HELP_STRING([--enable-sdl],[Use SDL library [default=yes]]),,
  [enable_sdl="yes"])
AC_ARG_ENABLE(sdlmixer,
  AC_HELP_STRING([--enable-sdlmixer],[Use SDL_mixer library [default=yes]]),,
  [enable_sdlmixer="yes"])
AC_ARG_ENABLE(xf86vidmode,
  AC_HELP_STRING([--enable-xf86vidmode],[Use XF86VidMode extension [default=yes]]),,
  [enable_xf86vidmode="yes"])
AC_ARG_ENABLE(ia32,
  AC_HELP_STRING([--enable-ia32],[Use IA-32 emulation [default=no]]),,
  [enable_ia32="no"])
AC_ARG_ENABLE(debug,
  AC_HELP_STRING([--enable-debug],[Enable debugging [default=no]]),,
  [enable_debug="no"])
AC_ARG_ENABLE(warning,
  AC_HELP_STRING([--enable-warning],[Enable warning [default=no]]),,
  [enable_warning="no"])

dnl
dnl Checks for GTK+
dnl
AM_PATH_GTK_2_0(2.6.0,,
  AC_MSG_ERROR(Test for GTK failed. See the file 'x11/INSTALL.ja' for help))
AC_SUBST(GTK_CFLAGS)
AC_SUBST(GTK_LIBS)
AC_DEFINE(USE_GTK2,1,[Define to 1 if you have the GTK+-2 library.])

dnl
dnl Checks for SDL and SDL_mixer
dnl
if test x"$enable_sdl" = "xyes"; then
  AM_PATH_SDL(1.2.0)
  if test x"$no_sdl" != "xyes"; then
    AC_DEFINE(USE_SDLAUDIO,,[Define if you have the SDL library.])
    if test x"$enable_sdlmixer" = "xyes"; then
      AC_CHECK_LIB(SDL_mixer,Mix_OpenAudio,
        AC_DEFINE(USE_SDLMIXER,,[Define if you have the SDL_mixer library.])
        SDL_LIBS="$SDL_LIBS -lSDL_mixer",,$SDL_LIBS)
    fi
  fi
fi


dnl
dnl Checks for XF86VidMode extension
dnl
if test x"$enable_xf86vidmode" = "xyes"; then
  ac_cv_save_cflags=$CFLAGS
  CFLAGS="$CFLAGS $X_CFLAGS"
  AC_CHECK_LIB(Xext,XextCreateExtension,
    XLIB="-lXext $XLIB",,[$X_LIBS $X_PRE_LIBS $XLIB $X_EXTRA_LIBS])
  AC_CHECK_HEADERS(X11/extensions/xf86vmode.h,
    [AC_CHECK_LIB(Xxf86vm,XF86VidModeQueryExtension,
      X_PRE_LIBS="$X_PRE_LIBS -lXxf86vm"
      AC_DEFINE(HAVE_XF86VIDMODE,1,[Define to 1 if you have the libXxf86vm library.]),,
      $X_LIBS $X_PRE_LIBS $XLIB $X_EXTRA_LIBS)],
    ,
    [#include <X11/Xlib.h>])
  CFLAGS=$ac_cv_save_cflags
fi

dnl
dnl Checks for nasm
dnl
AC_CHECK_PROGS(nasm,[nasm nasmw],no)

dnl
dnl Checks for IA-32 CPU emulation
dnl
AC_MSG_CHECKING([whether to use IA-32 emulation])
AM_CONDITIONAL(CPUCORE_IA32,test x"$enable_ia32" = "xyes")
if test x"$enable_ia32" = "xyes"; then
  AC_DEFINE(CPUCORE_IA32,,[Define if use IA-32 emulation])
fi
AC_MSG_RESULT($enable_ia32)

dnl
dnl Checks for debug mode
dnl
AC_MSG_CHECKING([whether to enable debugging])
if test x"$enable_debug" = "xyes"; then
  CFLAGS="$CFLAGS -g -DDEBUG -DTRACE"
  CFLAGS="$CFLAGS -Wstack-protector -fstack-protector --param ssp-buffer-size=1"
  enable_warning=yes
else
  CFLAGS="$CFLAGS -DNDEBUG"
fi
AC_MSG_RESULT($enable_debug)

dnl
dnl Checks for warning
dnl
AC_MSG_CHECKING([whether to enable warning])
if test x"$enable_warning" = "xyes"; then
  CFLAGS="$CFLAGS -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith"
  CFLAGS="$CFLAGS -Wreturn-type -Wswitch -Wshadow"
  CFLAGS="$CFLAGS -Wcast-qual -Wwrite-strings"
  CFLAGS="$CFLAGS -Wextra -Wno-unused-parameter"
  CFLAGS="$CFLAGS -Wformat=2"
fi
AC_MSG_RESULT($enable_warning)

dnl
dnl Checks for Xnp2 version
dnl
NP2VER_X11=`echo $PACKAGE_VERSION | $AWK 'BEGIN {FS="-"} NF==2 {print $2}'`
if test x"$NP2VER_X11" != "x"; then
  NP2VER_X11="\"-$NP2VER_X11\""
  AC_DEFINE_UNQUOTED(NP2VER_X11,$NP2VER_X11,[Define if Xnp2 version is available])
fi

dnl
dnl Output Makefiles
dnl
AC_CONFIG_FILES([Makefile])
AC_OUTPUT