busybox-1.14.3 compilation with uClibc

[Bernhard Reutner-Fischer]

On Fri, Oct 09, 2009 at 06:19:18PM +0200, walter harms wrote:
>
>
>Sushil Kumar schrieb:
>> Hi Walter Harms/vda,
>> 
>> Thanks for your reply.
>> Took the latest uClibc-0.9.30.1 tar and successfully compiled it is using the native glibc.
>> 
>> I made some changes in the busybox/Makefile.flags to include uClib library path and compiled the busybox using the latest uClibc-0.9.30.1 C library and I got lots of erreor as can be seen below.  
>> Thinking, error in my approach, I wrote a simple "hello world" program and tried to compile this using uClibc library.  I got the similar error related to the uClibc/include headers while compiling the busybox.
>> I have used the following command to compile my test program.
>> gcc -nostdlib -I../uClibc-0.9.30.1/include -I/usr/lib/gcc/i386-redhat-linux/4.1.1/include/  test.c
>> 
>> as suggested I followed the approach given at  tldp.org/Glibc-HOWTO.html#toc10, to compile a program with C library, other than glibc.
>> 
>> Please let me know what I am doing wrong.  Further, in the latest busybox (1.14.3), the linking of files are done using scripts/trylink.  Can we not link the program using any direct command. 
>> Thanks 
>> Sushil
>> 
>> Included below are some lines of compilation error of my test program
>> ==========================================
>> 
>> busybox-1.14.3]#gcc -nostdlib -I../uClibc-0.9.30.1/include -I/usr/lib/gcc/i386-redhat-linux/4.1.1/include/  test.c
>> In file included from ../uClibc-0.9.30.1/include/pthread.h:21,
>>                  from ../uClibc-0.9.30.1/include/bits/uClibc_mutex.h:15,
>>                  from ../uClibc-0.9.30.1/include/bits/uClibc_stdio.h:119,
>>                  from ../uClibc-0.9.30.1/include/stdio.h:72,
>>                  from test.c:1:
>> ../uClibc-0.9.30.1/include/time.h: In function ‘libc_hidden_proto’:
>> ../uClibc-0.9.30.1/include/time.h:346: error: storage class specified for parameter ‘clock_gettime’

>mmh that look if the header is missing something, no clue what.
>it is long time since i last tried uClibc, did you also try the  "-muclibc" to gcc as suggested by bernhard ?

that won't work, he tries to use uninstalled headers.

Sushil, i'd recommend you build a proper cross-compiler (git clone
git://git.uClibc.org/buildroot) && cd buildroot && make menuconfig)
That gives you a nice cross-compiler with sysroot support (i.e. easily
relocatable) that you can use to build whatever app you like.
HTH,