--- SheepShaver/src/Unix/configure.ac	2004/07/19 19:42:21	1.7
+++ SheepShaver/src/Unix/configure.ac	2004/11/24 22:48:02	1.10
@@ -25,6 +25,17 @@ AC_ARG_WITH(gtk,            [  --with-gt
 AC_ARG_WITH(mon,            [  --with-mon              use mon as debugger [default=yes]], [WANT_MON=$withval], [WANT_MON=yes])
 AC_ARG_WITH(dgcc,           [  --with-dgcc=COMPILER    use C++ COMPILER to compile synthetic opcodes], [DYNGEN_CC=$withval])
 
+dnl Addressing mode
+AC_ARG_ENABLE(addressing,
+  [  --enable-addressing=AM  set the addressing mode to use [default=real]],
+  [case "$enableval" in
+   real)        WANT_ADDRESSING_MODE="real";;
+   direct)      WANT_ADDRESSING_MODE="direct";;
+   direct,0x*)  WANT_ADDRESSING_MODE="direct"; NATMEM_OFFSET=`echo "$enableval" | sed -n '/direct,\(0[[xX]][[0-9A-Fa-f]]*\)/s//\1/p'`;;
+   esac],
+  [WANT_ADDRESSING_MODE="real"]
+)
+
 dnl SDL options.
 AC_ARG_ENABLE(sdl-static,   [  --enable-sdl-static     use SDL static libraries for linking [default=no]], [WANT_SDL_STATIC=$enableval], [WANT_SDL_STATIC=no])
 AC_ARG_ENABLE(sdl-video,    [  --enable-sdl-video      use SDL for video graphics [default=no]], [WANT_SDL_VIDEO=$enableval], [WANT_SDL_VIDEO=no])
@@ -37,6 +48,7 @@ AC_PROG_CXX
 AC_PROG_MAKE_SET
 AC_PROG_INSTALL
 AC_PROG_EGREP
+AC_CHECK_PROGS(FILE, [file false])
 
 dnl Check for PowerPC target CPU.
 HAVE_PPC=no
@@ -113,12 +125,21 @@ fi
 if [[ "x$WANT_SDL" = "xyes" ]]; then
   AC_PATH_PROG(sdl_config, "sdl-config")
   if [[ -n "$sdl_config" ]]; then
-    sdl_cflags=`$sdl_config --cflags`
-    if [[ "x$WANT_SDL_STATIC" = "xyes" ]]; then
-      sdl_libs=`$sdl_config --static-libs`
-    else
-      sdl_libs=`$sdl_config --libs`
-    fi
+    case $target_os in
+    # Special treatment for Cygwin so that we can still use the POSIX layer
+    *cygwin*)
+      sdl_cflags="-I`$sdl_config --prefix`/include/SDL"
+      sdl_libs="-L`$sdl_config --exec-prefix`/lib -lSDL"
+      ;;
+    *)
+      sdl_cflags=`$sdl_config --cflags`
+      if [[ "x$WANT_SDL_STATIC" = "xyes" ]]; then
+        sdl_libs=`$sdl_config --static-libs`
+      else
+        sdl_libs=`$sdl_config --libs`
+      fi
+      ;;
+    esac
     CFLAGS="$CFLAGS $sdl_cflags"
     CXXFLAGS="$CXXFLAGS $sdl_cflags"
     LIBS="$LIBS $sdl_libs"
@@ -229,6 +250,7 @@ AC_SYS_LARGEFILE
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
+AC_CHECK_HEADERS(malloc.h)
 AC_CHECK_HEADERS(mach/vm_map.h mach/mach_init.h sys/mman.h)
 AC_CHECK_HEADERS(sys/time.h sys/times.h sys/socket.h)
 AC_CHECK_HEADERS(unistd.h fcntl.h byteswap.h dirent.h)
@@ -238,6 +260,7 @@ AC_CHECK_HEADERS(linux/if.h, [], [], [
 #endif
 ])
 AC_CHECK_HEADERS(linux/if_tun.h net/if.h net/if_tun.h)
+AC_CHECK_HEADERS(fenv.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_BIGENDIAN
@@ -294,6 +317,50 @@ no:linux*)
   ;;
 esac
 
+dnl Check for headers and functions related to pty support (sshpty.c)
+dnl From openssh-3.2.2p1 configure.ac
+AC_CHECK_HEADERS(strings.h login.h sys/bsdtty.h sys/stat.h util.h pty.h)
+AC_CHECK_FUNCS(_getpty vhangup strlcpy)
+
+case "$host" in
+*-*-hpux10.26)
+	disable_ptmx_check=yes
+	;;
+*-*-linux*)
+	no_dev_ptmx=1
+	;;
+mips-sony-bsd|mips-sony-newsos4)
+	AC_DEFINE(HAVE_NEWS4, 1, [Define if you are on NEWS-OS (additions from openssh-3.2.2p1, for sshpty.c).])
+	;;
+*-*-sco3.2v4*)
+	no_dev_ptmx=1
+	;;
+*-*-sco3.2v5*)
+	no_dev_ptmx=1
+	;;
+*-*-cygwin*)
+	no_dev_ptmx=1
+	;;
+esac
+
+if test -z "$no_dev_ptmx" ; then
+	if test "x$disable_ptmx_check" != "xyes" ; then
+		AC_CHECK_FILE([/dev/ptmx],
+			[
+				AC_DEFINE_UNQUOTED(HAVE_DEV_PTMX, 1, [Define if you have /dev/ptmx.])
+				have_dev_ptmx=1
+			]
+		)
+	fi
+fi
+AC_CHECK_FILE([/dev/ptc],
+	[
+		AC_DEFINE_UNQUOTED(HAVE_DEV_PTS_AND_PTC, 1, [Define if you have /dev/ptc.])
+		have_dev_ptc=1
+	]
+)
+dnl (end of code from openssh-3.2.2p1 configure.ac)
+
 dnl AC_CHECK_FRAMEWORK($1=NAME, $2=INCLUDES)
 AC_DEFUN(AC_CHECK_FRAMEWORK, [
   AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1])dnl
@@ -343,6 +410,9 @@ darwin*)
     EXTFSSRC=../MacOSX/extfs_macosx.mm
   fi
   ;;
+cygwin*)
+  SERIALSRC="../dummy/serial_dummy.cpp"
+  ;;
 esac
 
 dnl SDL overrides
@@ -356,7 +426,14 @@ if [[ "x$WANT_SDL_VIDEO" = "xyes" ]]; th
   if [[ "x$ac_cv_framework_Carbon" = "xyes" ]]; then
     EXTRASYSSRCS="$EXTRASYSSRCS ../MacOSX/clip_macosx.cpp"
   else
-    EXTRASYSSRCS="$EXTRASYSSRCS ../dummy/clip_dummy.cpp"
+    case "$target_os" in
+    cygwin*)
+      EXTRASYSSRCS="$EXTRASYSSRCS ../Windows/clip_windows.cpp"
+      ;;
+    *)
+      EXTRASYSSRCS="$EXTRASYSSRCS ../dummy/clip_dummy.cpp"
+      ;;
+    esac
   fi
 else
   VIDEOSRCS="video_x.cpp"
@@ -672,6 +749,30 @@ fi
 AC_TRANSLATE_DEFINE(HAVE_MACH_EXCEPTIONS, "$ac_cv_have_mach_exceptions",
   [Define if your system supports Mach exceptions.])
 
+dnl Check if Windows exceptions are supported.
+AC_CACHE_CHECK([whether your system supports Windows exceptions],
+  ac_cv_have_win32_exceptions, [
+  AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  AC_TRY_RUN([
+    #define HAVE_WIN32_EXCEPTIONS 1
+    #define CONFIGURE_TEST_SIGSEGV_RECOVERY
+    #include "vm_alloc.cpp"
+    #include "sigsegv.cpp"
+  ], [
+  sigsegv_recovery=win32
+  ac_cv_have_win32_exceptions=yes
+  ],
+  ac_cv_have_win32_exceptions=no,
+  dnl When cross-compiling, do not assume anything.
+  ac_cv_have_win32_exceptions=no
+  )
+  AC_LANG_RESTORE
+  ]
+)
+AC_TRANSLATE_DEFINE(HAVE_WIN32_EXCEPTIONS, "$ac_cv_have_win32_exceptions",
+  [Define if your system supports Windows exceptions.])
+
 dnl Otherwise, check if extended signals are supported.
 if [[ -z "$sigsegv_recovery" ]]; then
   AC_CACHE_CHECK([whether your system supports extended signal handlers],
@@ -758,6 +859,92 @@ else
     WANT_VOSF=no
 fi
 
+dnl Check addressing mode to use
+AC_MSG_CHECKING([for addressing mode to use])
+case "$os_target" in
+cygwin*)
+  WANT_ADDRESSING_MODE="direct,cygwin-hack"
+  NATMEM_OFFSET=
+  ;;
+esac
+if [[ "$EMULATED_PPC" != "yes" ]]; then
+  if [[ "$WANT_ADDRESSING_MODE" != "real" ]]; then
+    AC_MSG_WARN([Running in native PowerPC mode, force use of Real Addressing.])
+    WANT_ADDRESSING_MODE="real"
+  fi
+fi
+if [[ "$WANT_ADDRESSING_MODE" = "direct" ]]; then
+  if [[ -n "$NATMEM_OFFSET" ]]; then
+    NATMEM_OFFSET_DEF="-DNATMEM_OFFSET=$NATMEM_OFFSET"
+  fi
+  AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  cat confdefs.h > conftest.$ac_ext
+  cat >> conftest.$ac_ext << EOF
+#include <stdio.h>
+#include <string.h>
+#include "vm_alloc.cpp"
+
+int main(void)
+{
+	if (vm_init() < 0)
+		return 1;
+
+	static const struct {
+		unsigned long base;
+		unsigned int size;
+	} ranges[[]] = {
+		{ 0x00000000, 0x0003000 },
+		{ 0x10000000, 0x2000000 },
+		{ 0x40800000, 0x0400000 },
+		{ 0x68070000, 0x0010000 },
+		{ 0x69000000, 0x0080000 },
+		{ 0x68ffe000, 0x0002000 },
+		{ 0x5fffe000, 0x0002000 },
+		{ 0x60000000, 0x0040000 },
+	};
+	const int n_ranges = sizeof(ranges)/ sizeof(ranges[[0]]);
+
+#ifdef NATMEM_OFFSET
+	unsigned long ofs = NATMEM_OFFSET;
+#else
+	for (unsigned long ofs = 0x10000000; ofs <= 0x90000000; ofs += 0x10000000)
+#endif
+	for (int i = 0; i < n_ranges; i++) {
+		char *m = (char *)(ranges[[i]].base + ofs);
+		if (vm_acquire_fixed(m, ranges[[i]].size) != 0)
+			break;
+		memset(m, 0, ranges[[i]].size);
+		vm_release(m, ranges[[i]].size);
+		if (i == n_ranges - 1) {
+			printf("0x%08x\n", ofs);
+			return 0;
+		}
+	}
+
+	vm_exit();
+	return 1;
+}
+EOF
+  doit='$CXX conftest.$ac_ext -o conftest.$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS $LIBS $NATMEM_OFFSET_DEF >& AS_MESSAGE_LOG_FD'
+  if AC_TRY_EVAL(doit); then
+    NATMEM_OFFSET=`./conftest.$ac_exeext`
+  else
+    NATMEM_OFFSET=
+  fi
+  rm -f conftest*
+  AC_LANG_RESTORE
+
+  if [[ -z "$NATMEM_OFFSET" ]]; then
+    AC_MSG_ERROR([could not determine a sensible NATMEM_OFFSET value])
+  else
+    WANT_ADDRESSING_MODE="direct,$NATMEM_OFFSET"
+    AC_DEFINE_UNQUOTED(NATMEM_OFFSET, $NATMEM_OFFSET,
+      [Define constant offset for Mac address translation])
+  fi
+fi
+AC_MSG_RESULT($WANT_ADDRESSING_MODE)
+
 dnl Platform specific binary postprocessor
 AC_PATH_PROG(BLESS, "true")
 if [[ "x$ac_cv_pagezero_hack" = "xyes" ]]; then
@@ -791,25 +978,28 @@ if $CXX -V -v 2>&1 | grep -q "Intel(R) C
 fi
 AC_MSG_RESULT($HAVE_ICC)
 
-# Test if the compiler can generate ELF objects
+dnl Determine the generated object format
 AC_CACHE_CHECK([whether the compiler can generate ELF objects],
-  ac_cv_elf_objects, [
+  ac_cv_object_format, [
   echo 'int i;' > conftest.$ac_ext
-  ac_cv_elf_objects=no
+  ac_cv_object_format=no
   if AC_TRY_EVAL(ac_compile); then
     case `/usr/bin/file conftest.$ac_objext` in
     *"ELF"*)
-      ac_cv_elf_objects=yes
+      ac_cv_object_format=elf
+      ;;
+    *)
+      ac_cv_object_format=unknown
       ;;
     esac
   fi
   rm -rf conftest*
 ])
-ELF_OBJECTS=$ac_cv_elf_objects
 
 dnl CPU emulator sources
 if [[ "x$EMULATED_PPC" = "xyes" ]]; then
   CPUSRCS="\
+    ../kpx_cpu/src/mathlib/ieeefp.cpp \
     ../kpx_cpu/src/cpu/ppc/ppc-cpu.cpp \
     ../kpx_cpu/src/cpu/ppc/ppc-decode.cpp \
     ../kpx_cpu/src/cpu/ppc/ppc-execute.cpp \
@@ -820,14 +1010,14 @@ if [[ "x$EMULATED_PPC" = "xyes" ]]; then
   if [[ "x$WANT_JIT" = "xyes" ]]; then
     AC_CACHE_CHECK([whether dyngen can be used],
       ac_cv_use_dyngen, [
-      case $host_cpu:$ELF_OBJECTS in
-      powerpc:yes)
+      case $host_cpu:$ac_cv_object_format in
+      powerpc:elf)
         ac_cv_use_dyngen=yes
         ;;
-      x86_64:yes)
+      x86_64:elf)
         ac_cv_use_dyngen=yes
         ;;
-      i?86:yes)
+      i?86:elf)
         ac_cv_use_dyngen=yes
         ;;
       *:*)
@@ -949,6 +1139,7 @@ echo Enable video on SEGV signals .....
 echo ESD sound support ................ : $WANT_ESD
 echo GTK user interface ............... : $WANT_GTK
 echo mon debugger support ............. : $WANT_MON
+echo Addressing mode .................. : $WANT_ADDRESSING_MODE
 echo Bad memory access recovery type .. : $sigsegv_recovery
 echo
 echo "Configuration done. Now type \"make\"."