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Alagu, I wrote a document/bash script that I use to build an m68k cross compiler under Cygwin 1.0 (commercial version) with both Windows 98 and Windows NT 4.0 Workstation. It does not seem to work with Windows NT 4.0 Server. Using the script all you have to do is download the distribution archives (four files in my case: newlib-1.8.2.tar.gz, gcc-2.95.2.tar.gz, binutils-2.9.1.tar.gz, and a patch file) and then run the script. You may have to edit the script (although only slightly) depending on your build setup and target platform. I assume a similar script would work in Linux or perhaps other Unix's. The overall procedure and script should be even simpler for Unix but I have not tried it yet. There have been recent messages about someone else trying to put together a similar thing, but I have not looked at it yet. I assume you've already seen that stuff. Please let me know if you try my little procedure and script and if it's helpful. I have not tried Windows 2000 but would like to know if it works there, and if anyone can find out why it was not working with NT Server that would be helpful. I tried a multithreaded option in make, which seemed to be making use of my dual-Celerons for a while but it got hung up, so I disabled that option. If someone can help me fix that I'd appreciate it. The script file is attached. Be careful not to do anything that would cause the file to be saved with carriage returns. I don't think bash will understand it like that. Chris |----------------- ORIGINAL TEXT: From Alagu Sankar -----------------| 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 To: Alagu Sankar ; crossgcc@sourceware.cygnus.com 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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