#
+# LB_DARWIN_CHECK_FUNCS
+#
+# check for functions in the darwin kernel
+# Note that this is broken for cross compiling
+#
+AC_DEFUN([LB_DARWIN_CHECK_FUNCS],
+[AC_FOREACH([AC_Func], [$1],
+ [AH_TEMPLATE(AS_TR_CPP(HAVE_[]AC_Func),
+ [Define to 1 if you have the `]AC_Func[' function.])])dnl
+for ac_func in $1
+do
+AC_MSG_CHECKING([for $1])
+AS_IF([AC_TRY_COMMAND(nm /mach | grep "[$1]" >/dev/null 2>/dev/null)],[
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$ac_func])) $2
+],[
+ AC_MSG_RESULT([no]) $3
+])
+done
+])
+
+#
+# LB_DARWIN_CONDITIONALS
+#
+# AM_CONDITIONALs for darwin
+#
+AC_DEFUN([LB_DARWIN_CONDITIONALS],
+[
+])
+
+#
# LB_PROG_DARWIN
#
# darwin tests
#
AC_DEFUN([LB_PROG_DARWIN],
-[
+[kernel_framework="/System/Library/Frameworks/Kernel.framework"
+#
+# FIXME: there should be a better way to get these than hard coding them
+#
+case $target_cpu in
+ powerpc*)
+ EXTRA_KCFLAGS="$EXTRA_KCFLAGS -arch ppc -mtune=G4 -mlong-branch"
+ EXTRA_KLDFLAGS="-arch ppc"
+ ;;
+ i?86 | x86_64)
+ EXTRA_KCFLAGS="$EXTRA_KCFLAGS -arch i386"
+ EXTRA_KLDFLAGS="-arch i386"
+ ;;
+esac
+
+# Kernel of OS X is not 64bits(even in Tiger), but -m64 can be taken by gcc in Tiger
+# (Tiger can support 64bits applications), so we have to eliminate -m64 while
+# building kextensions for and OS X.
+CC=`echo $CC | sed -e "s/\-m64//g"`
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -x c -pipe -Wno-trigraphs -fasm-blocks -g -O0"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -Wno-four-char-constants -Wmost -O0"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -fmessage-length=0"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -I$kernel_framework/Headers"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -I$kernel_framework/Headers/bsd"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -I$kernel_framework/PrivateHeaders"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -fno-common -nostdinc -fno-builtin"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -finline -fno-keep-inline-functions"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -force_cpusubtype_ALL -fno-exceptions"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -msoft-float -static"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -DKERNEL -DKERNEL_PRIVATE"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -DDRIVER_PRIVATE -DAPPLE -DNeXT"
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -D__KERNEL__ -D__DARWIN__"
+#
+# C flags for Panther/Tiger
+#
+case $target_os in
+ darwin8*)
+ EXTRA_KCFLAGS="$EXTRA_KCFLAGS -D__DARWIN8__"
+ ;;
+ darwin7*)
+ EXTRA_KCFLAGS="$EXTRA_KCFLAGS -ffix-and-continue"
+ ;;
+esac
+
+#
+# Debugging flags. Remove!
+#
+EXTRA_KCFLAGS="$EXTRA_KCFLAGS -O0 -DMACH_ASSERT=1"
+EXTRA_KLDFLAGS="$EXTRA_KLDFLAGS -static -nostdlib -r"
+EXTRA_KLIBS="-lkmodc++ -lkmod -lcc_kext"
+KMODEXT=""
+
+AC_SUBST(EXTRA_KLDFLAGS)
+AC_SUBST(EXTRA_KLIBS)
+
+kextdir='/System/Library/Extensions/$(firstword $(macos_PROGRAMS)).kext'
+plistdir='$(kextdir)/Contents'
+macosdir='$(plistdir)/MacOS'
+
+AC_SUBST(kextdir)
+AC_SUBST(plistdir)
+AC_SUBST(macosdir)
+
+LN_PROG_DARWIN
+
+LP_PROG_DARWIN
+
+LC_PROG_DARWIN
])