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Re: i386-elf/coff cross build


 
Thanks for your response.  But it doesnt seem to solve my problem.  Let me give a detailed output of the make error so that you can understand it better.  It clearly says that it uses 'ar' for target i.e. i386-coff-ar.  Moreover the error says that it is from the assembler.  There can be some other solution for this.  Can you brief it if you remember?
 
I did explore to some more extend.  The xgcc compiler generates an assembly file for libgcc2.c file with _floatdidf option, which contains a '.align  3' directive and hence the 'alignment not power of 2' error.  But i dont understand why the compiler generates this alignment and how to overcome it.
 
Any help is appreciated.
 
--------------------------
for name in _muldi3 _divdi3 _moddi3 _udivdi3 _umoddi3 _negdi2 _lshrdi3 _ashldi3 _ashrdi3 _ffsdi2 _udiv_w_sdiv _udivmoddi4 _cmpdi2 _ucmpdi2 _floatdidf _floatdisf  _fixunsdfsi _fixunssfsi _fixunsdfdi _fixdfdi _fixunssfdi _fixsfdi _fixxfdi _fixunsxfdi _floatdixf _fixunsxfsi _fixtfdi _fixunstfdi _floatditf __gcc_bcmp _varargs __dummy _eprintf _bb _shtab _clear_cache _trampoline __main _exit _ctors _pure; \
do \
  echo ${name}; \
  /home/alagu/buildx86/buildgcc/gcc/xgcc -B/home/alagu/buildx86/buildgcc/gcc/ -B/usr/x86gcc/i386-coff/bin/ -I/usr/x86gcc/i386-coff/include -O2  -DCROSS_COMPILE-DIN_GCC     -g -O2 -I./include   -g1  -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc  -I. -I/home/alagu/gcc-2.95.2/gcc -I/home/alagu/gcc-2.95.2/gcc/config -I/home/alagu/gcc-2.95.2/gcc/../include -c -DL${name} \
       /home/alagu/gcc-2.95.2/gcc/libgcc2.c -o ${name}.o; \
  if [ $? -eq 0 ] ; then true; else exit 1; fi; \
  i386-coff-ar rc tmplibgcc2.a ${name}.o; \
  rm -f ${name}.o; \
done
_muldi3
_divdi3
_moddi3
_divdi3
_moddi3
_udivdi3
_umoddi3
_negdi2
_lshrdi3
_ashldi3
_ashrdi3
_ffsdi2
_udiv_w_sdiv
_udivmoddi4
_cmpdi2
_ucmpdi2
_floatdidf
/tmp/cc6hpKn9.s: Assembler messages:
/tmp/cc6hpKn9.s:113: Error: Alignment not a power of 2
make[1]: *** [libgcc2.a] Error 1
make[1]: Leaving directory `/home/alagu/buildx86/buildgcc/gcc'
make: *** [cross] Error 2
----------------------------------------------
----- Original Message -----
From: b gonzales
Sent: Thursday, March 30, 2000 7:04 PM
Subject: Re: i386-elf/coff cross build

I encountered this problem before.
 
What I did was I copied /bin/ar into one of the bin directory of the cross compiler.
 
Try examining the make file. There is a line there that references the ar program.
 
I'm sorry that I cannot give the details because  I have no notes about it.
 
Hope this helps.
 
 
-----Original Message-----
From: Alagu Sankar <alagu@nettaxi.com>
To: crossgcc@sourceware.cygnus.com <crossgcc@sourceware.cygnus.com>
Date: Thursday, March 30, 2000 3:17 PM
Subject: i386-elf/coff cross build

Hi all,
 
I am in the process of building cross compiler tools for intel 386 embedded target with a custom RTOS.  Has anybody succeded in installing the i[3456]-elf or i[3456]-coff gcc cross compilers with linux or windows(cygwin) host. I'm seeing lot of failure stories in building i386 cross tools in the mailing list
 
I am using gcc-2.95.2 with newlib-1.8.2.  I am able to build bin utils for i386-coff successfully. But when i try to install gcc i am getting the follwoing errors (I tried with both cygwin and linux host but the result is same).  Any help in solving the problem is very much appreciated.
 
-------------------------------------------------------------------------
_ffsdi2
_udiv_w_sdiv
_udivmoddi4
_cmpdi2
_ucmpdi2
_floatdidf
/tmp/ccQYtSN7.s: Assembler messages:
/tmp/ccQYtSN7.s:113: Error: Alignment not a power of 2
make[1]: *** [libgcc2.a] Error 1
make[1]: Leaving directory `/home/alagu/buildx86/buildgcc/gcc'
make: *** [cross] Error 2  
---------------------------------------------------------------------------
 
I was successfull in creating powerpc-eabi and arm-coff for both the host and obviously i follow the same procedure for building i386-coff also.
 
I have got one more question. Does anybody know, like.. what are the issues in using gcc with a custom developed RTOS (not RTEMS or eCos) and its own C library routines for am embedded target.
 
Thanx in anticipation
 
Alagu Sankar

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