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)

8 files changed, 8 insertions, 8 deletions

diff --git a/c/src/lib/libbsp/configure.in b/c/src/lib/libbsp/configure.in
index 6e07a7eee7..97e14ebbad 100644
--- a/c/src/lib/libbsp/configure.in
+++ b/c/src/lib/libbsp/configure.in
@@ -47,7 +47,7 @@ RTEMS_BSP_ALIAS(${RTEMS_BSP},bspdir)
 
 # Is there code where there should be for this BSP?
 # The bare bsp is a special case as it is not under the RTEMS_CPU path
-case ${RTEMS_BSP} in
+case $bspdir in
   bare)
     bspcpudir=
     if test "X${BARE_CPU_CFLAGS}" = "X" ; then
diff --git a/c/src/lib/libbsp/hppa1.1/simhppa/tools/configure.in b/c/src/lib/libbsp/hppa1.1/simhppa/tools/configure.in
index 66a415848a..5ea7d6d9e6 100644
--- a/c/src/lib/libbsp/hppa1.1/simhppa/tools/configure.in
+++ b/c/src/lib/libbsp/hppa1.1/simhppa/tools/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(print_dump.c)
+RTEMS_TOP(../../../../../../..)
 AC_CONFIG_AUX_DIR(../../../../../../..)
 
-RTEMS_TOP(../../../../../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-lib-libbsp-hppa-simhppa-tools,$RTEMS_VERSION,no)
diff --git a/c/src/lib/libbsp/i386/pc386/tools/configure.in b/c/src/lib/libbsp/i386/pc386/tools/configure.in
index 6a8920bcd1..ebed8e0411 100644
--- a/c/src/lib/libbsp/i386/pc386/tools/configure.in
+++ b/c/src/lib/libbsp/i386/pc386/tools/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(Spec.doc)
+RTEMS_TOP(../../../../../../..)
 AC_CONFIG_AUX_DIR(../../../../../../..)
 
-RTEMS_TOP(../../../../../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-lib-libbsp-i386-pc386-tools,$RTEMS_VERSION,no)
diff --git a/c/src/lib/libbsp/i386/ts_386ex/tools/configure.in b/c/src/lib/libbsp/i386/ts_386ex/tools/configure.in
index 2fca229ae0..31cb42ee7c 100644
--- a/c/src/lib/libbsp/i386/ts_386ex/tools/configure.in
+++ b/c/src/lib/libbsp/i386/ts_386ex/tools/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(coff2bin)
+RTEMS_TOP(../../../../../../..)
 AC_CONFIG_AUX_DIR(../../../../../../..)
 
-RTEMS_TOP(../../../../../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-lib-libbsp-i386-ts_386ex-tools,$RTEMS_VERSION,no)
diff --git a/c/src/lib/libbsp/m68k/mvme162/tools/configure.in b/c/src/lib/libbsp/m68k/mvme162/tools/configure.in
index 7b9c3d5eb4..2fb3b588a7 100644
--- a/c/src/lib/libbsp/m68k/mvme162/tools/configure.in
+++ b/c/src/lib/libbsp/m68k/mvme162/tools/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(sload.c)
+RTEMS_TOP(../../../../../../..)
 AC_CONFIG_AUX_DIR(../../../../../../..)
 
-RTEMS_TOP(../../../../../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-lib-libbsp-m68k-mvme162-tools,$RTEMS_VERSION,no)
diff --git a/c/src/lib/libbsp/powerpc/psim/tools/configure.in b/c/src/lib/libbsp/powerpc/psim/tools/configure.in
index 1a598a1387..39fa2825ea 100644
--- a/c/src/lib/libbsp/powerpc/psim/tools/configure.in
+++ b/c/src/lib/libbsp/powerpc/psim/tools/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(psim)
+RTEMS_TOP(../../../../../../..)
 AC_CONFIG_AUX_DIR(../../../../../../..)
 
-RTEMS_TOP(../../../../../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-lib-libbsp-powerpc-psim-tools,$RTEMS_VERSION,no)
diff --git a/c/src/lib/libbsp/sparc/erc32/tools/configure.in b/c/src/lib/libbsp/sparc/erc32/tools/configure.in
index 0aee4094fa..5fcc353a7d 100644
--- a/c/src/lib/libbsp/sparc/erc32/tools/configure.in
+++ b/c/src/lib/libbsp/sparc/erc32/tools/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(runtest.in)
+RTEMS_TOP(../../../../../../..)
 AC_CONFIG_AUX_DIR(../../../../../../..)
 
-RTEMS_TOP(../../../../../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-lib-libbsp-sparc-erc32-tools,$RTEMS_VERSION,no)
diff --git a/c/src/lib/libbsp/unix/posix/tools/configure.in b/c/src/lib/libbsp/unix/posix/tools/configure.in
index db0f365fbc..0efb748365 100644
--- a/c/src/lib/libbsp/unix/posix/tools/configure.in
+++ b/c/src/lib/libbsp/unix/posix/tools/configure.in
@@ -3,9 +3,9 @@ dnl
 dnl  $Id$
 
 AC_INIT(runtest.in)
+RTEMS_TOP(../../../../../../..)
 AC_CONFIG_AUX_DIR(../../../../../../..)
 
-RTEMS_TOP(../../../../../../..)
 RTEMS_CANONICAL_TARGET_CPU
 
 AM_INIT_AUTOMAKE(rtems-lib-libbsp-unix-posix-tools,$RTEMS_VERSION,no)