[Buildroot] uClibc kernel headers problem

[Roman Chertov <rchertov@cs.ucsb.edu>]

I am starting to suspect that for whatever reason uClibc is not using
the cross compiler and is instead using the host compiler.  I am just
curious on the typical debugging procedure for this.  Thanks.

Roman Chertov wrote:
> I have untared a fresh copy of build root 2009.8.  When I run make for
> the first time, there is an error regarding the absence of
> toolchain_build_arm/uClibc.config.arm  and the process stops (see error
> log below).  If I do 'touch toolchain_build_arm/uClibc.config.arm' then
> run make again, there is a series of questions which pertain to which
> configs should be used.
> 
> I am using my own target/device.  But that mainly defines the U-BOOT
> config variable (cs-e9302), and I don't have any uClibc configuration
> files in that directory.  I am just curious if this is a bug or if I am
> doing something wrong.
> 
> Roman
> 
> Applying uClibc-0.9.30.1-unifdef-getline.patch using plaintext:
> patching file extra/scripts/unifdef.c
> touch
> /proj/tools/buildroot-2009.08/toolchain_build_arm/uClibc-0.9.30.1/.patched
> cp -f
> /proj/tools/buildroot-2009.08/toolchain_build_arm/uClibc.config.arm
> /proj/tools/buildroot-2009.08/toolchain_build_arm/uClibc-0.9.30.1/.oldconfig
> 
> cp: cannot stat
> `/proj/tools/buildroot-2009.08/toolchain_build_arm/uClibc.config.arm':
> No such file or directory
> 
> make: ***
> [/proj/tools/buildroot-2009.08/toolchain_build_arm/uClibc-0.9.30.1/.oldconfig]
> Error 1
> 
> 
> Roman Chertov wrote:
>> Hello,
>>
>> I am using the latest build root release and I am trying to build a tool
>> chain for CS-e9302 board which has an ARM chip.  I want to use the
>> 2.6.24.7 Linux kernel (I patched it to support click modular router).  I
>> patched that kernel and u-boot 1.3.3 with patches from
>> http://dev.ivanov.eu/projects/cs-e9302/ to enable the board support.  I
>> then renamed the tar.bz2 files into file names that buildroot supports
>> in the menuconfig (linux-2.6.24.tar.bz2 kernel and
>> u-boot-2009.06.tar.bz2) and placed the files into the dl directory.
>>
>> My current trouble is with uClibc 0.9.30.1.  In the buildroot menuconfig
>> I specified that I want to build the entire Linux kernel, so as far as I
>> understand there is no need to use the precompiled headers option.  When
>> I build the tool chain, it all works up to uClibc.  I get the following
>> error "cc1: error: unrecognized command line option "-mbig-endian"".  I
>> have included the output log down below.  I would appreciate any help
>> with this.
>>
>> Thanks,
>>
>> Roman
>>
>>   Checking build system dependencies:
>> BUILDROOT_DL_DIR clean:                         Ok
>> CC clean:                                       Ok
>> CXX clean:                                      Ok
>> CPP clean:                                      Ok
>> CFLAGS clean:                                   Ok
>> INCLUDES clean:                                 Ok
>> CXXFLAGS clean:                                 Ok
>> which installed:                                Ok
>> sed works:                                      Ok (/bin/sed)
>> GNU make version '3.81':                        Ok
>> C compiler '/usr/lib/ccache/gcc'
>> C compiler version '4.4.1':                     Ok
>> C++ compiler '/usr/lib/ccache/g++'
>> C++ compiler version '4.4.1':                   Ok
>> awk installed:                                  Ok
>> bash installed:                                 Ok
>> bison installed:                                Ok
>> flex installed:                                 Ok
>> gettext installed:                              Ok
>> makeinfo installed:                             Ok
>> Build system dependencies:                      Ok
>>
>> rm -rf
>> /proj/tools/buildroot-2009.08/project_build_arm/uclibc/buildroot-config
>> mkdir -p /proj/tools/buildroot-2009.08/project_build_arm/uclibc
>> cp -dpRf package/config/buildroot-config
>> /proj/tools/buildroot-2009.08/project_build_arm/uclibc/buildroot-config
>> /usr/bin/make -j1 -C
>> /proj/tools/buildroot-2009.08/toolchain_build_arm/uClibc-0.9.30.1 \
>>                 PREFIX= \
>>                 DEVEL_PREFIX=/ \
>>                 RUNTIME_PREFIX=/ \
>>                 HOSTCC="/usr/lib/ccache/gcc" \
>>                 all
>> make[1]: Entering directory
>> `/proj/tools/buildroot-2009.08/toolchain_build_arm/uClibc-0.9.30.1'
>>   GEN include/bits/sysnum.h
>> cc1: error: unrecognized command line option "-mbig-endian"
>> cc1: error: unrecognized command line option "-mbig-endian"
>> ERROR: Could not generate syscalls.
>> Make sure that you have proper kernel headers.
>> Your .config in KERNEL_HEADERS="" was set to:
>> /usr/include/
>> make[1]: *** [include/bits/sysnum.h] Error 1
>> make[1]: Leaving directory
>> `/proj/tools/buildroot-2009.08/toolchain_build_arm/uClibc-0.9.30.1'
>> make: ***
>> [/proj/tools/buildroot-2009.08/toolchain_build_arm/uClibc-0.9.30.1/lib/libc.a]
>> Error 2
>>
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> 
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