Patch rtems-rc-19991123-rc-3.diff from Ralf Corsepius

<corsepiu@faw.uni-ulm.de>:

    The patch below provides
      * automake support for score/cpu/powerpc
      * The hack to propagate values from *.cfg to automake configuration
      * A fix for librdbg/powerpc/mcp750/Makefile.am (Was completely corrupted
        before)
      * Fixes some files which apparently where missing in
        rtems-rc-19991123-rc-2.diff
      * some minor configuration related patches

    To apply:

      rm -rf ./c/src/exec/score/cpu/powerpc/wrap
      patch -p1 < rtems-rc-19991123-rc-3.diff

    Attention:
      c/src/exec/score/cpu/[configure.in|aclocal.m4|configure] should be
      removed after applying the patch.

Modifications had been made to the score/cpu/powerpc directory after
the snapshot this was based on.  In particular, the mpc750 and
other_cpu directories had been renamed to new_exception_processing
and old_exception_processing.  After this patch was applied, modifications
were made to account for this.

aclocal/check-bsp-cache.m4

@@ -0,0 +1,17 @@
+dnl $Id$
+
+dnl RTEMS_CHECK_BSP_CACHE(RTEMS_BSP)
+AC_DEFUN(RTEMS_CHECK_BSP_CACHE,
+[
+AC_REQUIRE([RTEMS_CHECK_CPU])dnl sets RTEMS_CPU, target
+AC_REQUIRE([RTEMS_ENV_RTEMSBSP])dnl set RTEMS_BSP
+AC_REQUIRE([RTEMS_TOP])dnl sets RTEMS_TOPdir
+AC_CACHE_CHECK("for RTEMS_CPU_MODEL", rtems_cv_RTEMS_CPU_MODEL,
+. $RTEMS_TOPdir/c/[$]$1/make/[$]$1.cache)
+RTEMS_CPU_MODEL=$rtems_cv_RTEMS_CPU_MODEL
+AC_SUBST(RTEMS_CPU_MODEL)
+AC_CACHE_CHECK("for RTEMS_BSP_FAMILY", rtems_cv_RTEMS_BSP_FAMILY,
+. $RTEMS_TOPdir/c/[$]$1/make/[$]$1.cache)
+RTEMS_BSP_FAMILY=$rtems_cv_RTEMS_BSP_FAMILY
+AC_SUBST(RTEMS_BSP_FAMILY)
+])dnl

c/src/exec/score/cpu/powerpc/configure.in

@@ -0,0 +1,44 @@
+dnl Process this file with autoconf to produce a configure script.
+dnl
+dnl $Id$
+
+AC_PREREQ(2.13)
+AC_INIT(new_exception_processing)
+RTEMS_TOP(../../../../../..)
+AC_CONFIG_AUX_DIR(../../../../../..)
+
+RTEMS_CANONICAL_TARGET_CPU
+
+AM_INIT_AUTOMAKE(rtems-c-src-exec-score-cpu-powerpc,$RTEMS_VERSION,no)
+AM_MAINTAINER_MODE
+
+RTEMS_ENABLE_LIBCDIR
+
+RTEMS_ENV_RTEMSBSP
+
+RTEMS_CHECK_CPU
+RTEMS_CANONICAL_HOST
+
+RTEMS_PROJECT_ROOT
+
+dnl check target cc
+RTEMS_PROG_CC_FOR_TARGET
+RTEMS_CANONICALIZE_TOOLS
+
+RTEMS_CHECK_NEWLIB
+
+# Check if there is custom/*.cfg for this BSP
+RTEMS_CHECK_CUSTOM_BSP(RTEMS_BSP)
+RTEMS_CHECK_BSP_CACHE(RTEMS_BSP)
+
+PROJECT_INCLUDE="\$(PROJECT_ROOT)/$RTEMS_BSP/lib/include"
+AC_SUBST(PROJECT_INCLUDE)
+
+AM_CONDITIONAL(PPC_NEW_EXCEPTION_PROCESSING,test "$RTEMS_CPU_MODEL" = "mpc750" -o "$RTEMS_CPU_MODEL" = "mpc604")
+
+# Try to explicitly list a Makefile here 
+AC_OUTPUT( 
+Makefile
+shared/Makefile
+new_exception_processing/Makefile
+old_exception_processing/Makefile)