Patch from Ralf Corsepius <corsepiu@faw.uni-ulm.de>:

The patch below actuallly consists of two patches:
1) moving librpc to c/src/librpc similar to what has been done to librtems++
2) reworked configure scripts, many safety and dependency checks added to
aclocal/*.m4 macros + configuration fixes.

To apply:

mkdir c/src/librpc
mkdir c/src/librpc/src
cp c/src/lib/librpc/*.c c/src/librpc/src
cp c/src/lib/librpc/Makefile.in c/src/librpc/src
mkdir c/src/librpc/include
mkdir c/src/librpc/include/rpc
cp c/src/lib/include/rpc/* c/src/librpc/include/rpc
patch -p1 < ../rtems-rc-19990820-7.diff
rm -rf c/src/lib/librpc
rm -rf c/src/lib/include/rpc
./autogen

The additional checks in aclocal/*m4 macros add rather restrictive, sometimes
unnecessarily restrictive constraints on the sequence of how macros can be
used in a configure.in script. Adding them has let my problems with some more
complicated configuration options vanish. Apparently some macros had not been
in the required order .

----

Now I still get some linking errors for some cpus and bsps, esp when linking
cdtest, but also at other locations:

e.g. this happens for mips64orion/p4600:

# make[5]: Entering directory
`/lfs/poseidon/users/rtems/src/multi/build/mips64orion-rtems/c/p4600/tests/samples/hello'

/opt/rtems/bin/mips64orion-rtems-gcc --pipe -B../../../../../../p4600/lib/
-specs bsp_specs -qrtems -DP4000 -DCPU_R4000 -DP3_DIAG -D_R4000 -D__mips=3
-mcpu=4600 -G0   -I../../../../../../p4600/lib/include/networking  -g -Wall
-ansi -fasm  -O4 -fomit-frame-pointer     -o o-p4600/hello.exe
o-p4600/init.o ../../../../../../p4600/lib/no-dpmem.rel
../../../../../../p4600/lib/no-event.rel
../../../../../../p4600/lib/no-msg.rel ../../../../../../p4600/lib/no-mp.rel
../../../../../../p4600/lib/no-part.rel
../../../../../../p4600/lib/no-signal.rel
../../../../../../p4600/lib/no-timer.rel
../../../../../../p4600/lib/no-rtmon.rel
/opt/rtems/mips64orion-rtems/lib/libc.a(dtoa.o): In function `_dtoa_r':
/opt/hermes/embedded/build/build-mips64orion-tools/mips64orion-rtems/newlib/libc/stdlib/../../../../../src/newlib/libc/stdlib/dtoa.c:348: relocation truncated to fit: R_MIPS_LITERAL no symbol
/opt/hermes/embedded/build/build-mips64orion-tools/mips64orion-rtems/newlib/libc/stdlib/../../../../../src/newlib/libc/stdlib/dtoa.c:348: relocation truncated to fit: R_MIPS_LITERAL no symbol
/opt/hermes/embedded/build/build-mips64orion-tools/mips64orion-rtems/newlib/libc/stdlib/../../../../../src/newlib/libc/stdlib/dtoa.c:348: relocation truncated to fit: R_MIPS_LITERAL no symbol
collect2: ld returned 1 exit status

# mips64orion-rtems-gcc -v
Reading specs from /opt/rtems/lib/gcc-lib/mips64orion-rtems/2.95.1/specs
gcc version 2.95.1 19990816 (release)

# mips64orion-rtems-ld -v
GNU ld version 2.9.5 (with BFD 2.9.5)

7 files changed, 7 insertions, 7 deletions

diff --git a/tools/build/configure.in b/tools/build/configure.in
index ea8c342706..5369179bc2 100644
--- a/tools/build/configure.in
+++ b/tools/build/configure.in
@@ -4,8 +4,8 @@
 
 AC_PREREQ(2.13)
 AC_INIT(install-if-change.in)
-AC_CONFIG_AUX_DIR(../..)
 RTEMS_TOP(../..)
+AC_CONFIG_AUX_DIR(../..)
 
 AC_CANONICAL_HOST
 
diff --git a/tools/cpu/configure.in b/tools/cpu/configure.in
index b469f1ea31..4ca1b1bf15 100644
--- a/tools/cpu/configure.in
+++ b/tools/cpu/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(generic)
+RTEMS_TOP(../..)
 AC_CONFIG_AUX_DIR(../..)
 
-RTEMS_TOP(../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-tools-cpu,$RTEMS_VERSION,no)
diff --git a/tools/cpu/generic/configure.in b/tools/cpu/generic/configure.in
index ac8c82b0db..b1da0538ad 100644
--- a/tools/cpu/generic/configure.in
+++ b/tools/cpu/generic/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(size_rtems.in)
+RTEMS_TOP(../../..)
 AC_CONFIG_AUX_DIR(../../..)
 
-RTEMS_TOP(../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-cpu-tools-generic,$RTEMS_VERSION,no)
diff --git a/tools/cpu/hppa1.1/configure.in b/tools/cpu/hppa1.1/configure.in
index ac742498f9..13c495bec1 100644
--- a/tools/cpu/hppa1.1/configure.in
+++ b/tools/cpu/hppa1.1/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$    
 
 AC_INIT(genoffsets.c)
+RTEMS_TOP(../../..)
 AC_CONFIG_AUX_DIR(../../..)
 
-RTEMS_TOP(../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-cpu-tools-hppa,$RTEMS_VERSION,no)
diff --git a/tools/cpu/sh/configure.in b/tools/cpu/sh/configure.in
index 80a4b07cd7..1a152f7413 100644
--- a/tools/cpu/sh/configure.in
+++ b/tools/cpu/sh/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(shgen.c)
+RTEMS_TOP(../../..)
 AC_CONFIG_AUX_DIR(../../..)
 
-RTEMS_TOP(../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-cpu-tools-sh,$RTEMS_VERSION,no)
diff --git a/tools/cpu/unix/configure.in b/tools/cpu/unix/configure.in
index fcf8d14ff0..b9460aaecb 100644
--- a/tools/cpu/unix/configure.in
+++ b/tools/cpu/unix/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$    
 
 AC_INIT(gensize.c)
+RTEMS_TOP(../../..)
 AC_CONFIG_AUX_DIR(../../..)
 
-RTEMS_TOP(../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-cpu-tools-unix,$RTEMS_VERSION,no)
diff --git a/tools/update/configure.in b/tools/update/configure.in
index 737f99e296..19eeaa03a4 100644
--- a/tools/update/configure.in
+++ b/tools/update/configure.in
@@ -4,8 +4,8 @@
 
 AC_PREREQ(2.13)
 AC_INIT(rtems-polish.sh)
-AC_CONFIG_AUX_DIR(../..)
 RTEMS_TOP(../..)
+AC_CONFIG_AUX_DIR(../..)
 
 AC_CANONICAL_HOST