Wolfgang Grandegger wrote:
> Jan Kiszka wrote:
>> Giammarco Zacheo wrote:
>>> Hi,
>>> while compiling rtnet 0.9.11 for a mpc5200-based (powerpc) board with
>>> xenomai 2.4.8 on a denx-2.6.29.4 kernel, i had problems while running
>>> the configure script, which wasn't able to find Xenomai headers in the
>>> kernel tree. This is due to the fact that the configure script is
>>> still looking for the arch/ppc obsoleted directory.
>>>
>>> The following patch worked for me, but I'm afraid this could break
>>> compatibility with older kernels and/or RTAI/Xenomai releases. There's
>>> probably a better way to do this. Any ideas?
>>>
>>> Cheers,
>>> Giammarco
>>>
>>> --- a/configure.ac
>>> +++ b/configure.ac
>>> @@ -58,10 +58,14 @@ case "$host" in
>>> RTNET_TARGET_ARCH=arm
>>> wanted_kernel_arch=CONFIG_ARM
>>> ;;
>>> - powerpc-*|ppc-*)
>>> + ppc-*)
>>> RTNET_TARGET_ARCH=ppc
>>> wanted_kernel_arch=CONFIG_PPC
>>> ;;
>>> + powerpc-*)
>>> + RTNET_TARGET_ARCH=powerpc
>>> + wanted_kernel_arch=CONFIG_PPC
>>> + ;;
>>> # mips-*|mipsel-*)
>>> # RTNET_TARGET_ARCH=mips
>>> # wanted_kernel_arch=CONFIG_MIPS
>>>
>> Wolfgang, can you check if it breaks anything (specifically 2.4)?
>
> This does not work for Kernels using the arch/ppc tree. Retrieving the
> real ARCH from $host (powerpc-unknown-linux-gnu in my case) gives always
> "powerpc". Either we provide a configuration parameter "--arch=" or we
> try to retrieve ARCH from the kernel tree, e.g. by checking "include/asm".
Giammarco, does the patch below work for you?
Wolfgang.
---
configure.ac | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
Index: rtnet/configure.ac
===================================================================
--- rtnet.orig/configure.ac
+++ rtnet/configure.ac
@@ -59,7 +59,7 @@ case "$host" in
wanted_kernel_arch=CONFIG_ARM
;;
powerpc-*|ppc-*)
- RTNET_TARGET_ARCH=ppc
+ RTNET_TARGET_ARCH=powerpc
wanted_kernel_arch=CONFIG_PPC
;;
# mips-*|mipsel-*)
@@ -225,6 +225,13 @@ else
AC_MSG_RESULT([$RTEXT_LINUX_DIR (kernel
${RTEXT_LINUX_VERSION}${CONFIG_SMP:+-SMP} + Xenomai)])
fi
+# Fixup real arch for powerpc
+if test "${RTNET_TARGET_ARCH}" = "powerpc" ; then
+ AC_MSG_CHECKING([for real PowerPC arch])
+ readlink ${CONFIG_RTNET_LINUX_DIR}/include/asm | grep -q ppc &&
RTNET_TARGET_ARCH="ppc"
+ AC_MSG_RESULT([$RTNET_TARGET_ARCH])
+fi
+
#
# from now we think we've found some RT-extension, so if we got an error
# it will be fatal, thus exit with AC_MSG_ERROR
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