This is the mail archive of the crossgcc@sources.redhat.com mailing list for the crossgcc project.
See the CrossGCC FAQ for lots more information.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
Hello, A few days ago I sent a message to the gcc-help mailing list asking how to build a cross compiler for an alpha-dec-osf system, but had only one answer that didn't help very much. Today I found this list, so I am trying my luck here. I am trying to use the SMTSIM simulator, which simulates the Alpha processor and adds some extensions to it for multi-threading. According to the README of the simulator, it runs on Digital Unix and it also accepts Alpha object code generated on such systems. My problem is that I have no access to a system with Digital Unix. Therefore, I am porting the simulator to another system (Origin 2000, R10000 processors, IRIX 6.5) and I am almost done with it. By porting I mean that it will run on an Origin 2000 system, but the object code it will accept is still Alpha object code. From the source code of the simulator I can tell that the object file must be in a.out format. This does not mean much to me, but somehow I feel that it is important. As you can imagine, I need also a compiler that will generate object code for Digital Unix systems and a C library and to build them I need some help, as all my attempts have failed and a few pages I found searching in the Internet were not very useful. First let me describe what I have done. I downloaded binutils-2.13, uncompressed it and tried to configure it on my system (dual Pentium III, 866MHz, RedHat Beta "null"): ~/Temp # tar -xzvf binutils-2.13.tar.gz ~/Temp # mkdir binutils-2.13-build ~/Temp # cd binutils-2.13-build ~/Temp # ../binutils-2.13/configure --prefix=/usr/local/apps/alpha-dec-osf4 --target=alpha-dec-osf4 The few first lines of the output I get are: Configuring for a i686-pc-linux-gnu host. *** This configuration is not supported in the following subdirectories: gas ld (Any other directories should still work fine.) Created "Makefile" in /root/Temp/RPMS/CrossGCC/binutils-2.13-build using "mt-frag" Configuring intl... creating cache ../config.cache And finally I installed everything: ~/Temp # make install With the exception of as and ld all other programs contained in the binutils package are configured and built without any problems. I tried to use binutils 2.12, 2.11.2 and 2.11 but all seem to have the same problem. I found somewhere that I could built binutils with a target of alpha-coff-osf4 and then replace all occurences of coff with dec in the produced program files and directories. Therefore I tried: ~/Temp # ../binutils-2.13/configure --prefix=/usr/local/apps/alpha-dec-osf4 --target=alpha-coff-osf4 This time everything compiled correctly (including as and ld) and in the installation directory (/usr/local/apps/alpha-dec-osf4) I changed all occurences of coff with dec, for example: /usr/local/apps/alpha-dec-osf4/bin/alpha-coff-osf4-as -> /usr/local/apps/alpha-dec-osf4/bin/alpha-dec-osf4-as I used osf4 because I found in the documentation of gcc-3.2 that it doesn't support anything less than osf4. Having these binutils I tried to build gcc-3.2 with a target alpha-dec-osf4 (not alpha-coff-osf4 as binutils. This was suggested at the same web page mentioned earlier): ~/Temp # tar -xzvf gcc-3.2.tar.gz ~/Temp # mkdir gcc-3.2-build ~/Temp # cd gcc-3.2-build ~/Temp # ../gcc-3.2/configure --prefix=/usr/local/apps/alpha-dec-osf4 --target=alpha-dec-osf4 --with-gnu-as --with-gnu-ld ~/Temp # make bootstrap (After compiling several files) ./xgcc -B./ -B/usr/local/apps/alpha-dec-osf4/alpha-dec-osf4/bin/ -isystem /usr/local/apps/alpha-dec-osf4/alpha-dec-osf4/include -isystem /usr/local/apps/alpha-dec-osf4/alpha-dec-osf4/sys-include -O2 -DIN_GCC -DCROSS_COMPILE -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -isystem ./include -fPIC -g -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc -c -o crtfastmath.o ../../gcc-3.2/gcc/config/alpha/crtfastmath.c ../../gcc-3.2/gcc/config/alpha/crtfastmath.c:47: warning: no previous prototype for `_GLOBAL__I_.._.._gcc_3.2_gcc_config_alpha_crtfastmath.cAdDnfb' /tmp/cc5ndBJJ.s: Assembler messages: /tmp/cc5ndBJJ.s:70: Fatal error: unhandled relocation type (null) make[2]: *** [crtfastmath.o] Error 1 make[2]: Leaving directory `/root/Temp/CrossGCC/gcc-3.2-build/gcc' make[1]: *** [stage1_build] Error 2 make[1]: Leaving directory `/root/Temp/CrossGCC/gcc-3.2-build/gcc' make: *** [bootstrap] Error 2 It seems that the experiment with binutils didn't went very well. The problem is that I don't know what to try out next. Either I don't get as and ld compiled or I cannot build gcc with the binutils I manage to compile. Is there any combination of binutils, gcc and/or target (for example alphaev68-dec-osf4) that I can use to build gcc as a cross-compiler for a version of Digital Unix? Moreover, do I have to use any more switches to the configure scripts for binutils and gcc? Does the host play any role (32-bit Pentium host -> 64-bit Alpha target)? Is there something else that I am doing wrong? At which point do I have to build glibc? Any idea or help on this is greatly appreciated, but of course a pointer to a good resource or a step-by-step explanation of what I have to do would be even better :-) Please take into account that it is my first time that I am trying to build a cross-compiler and unfortunately I haven't been able to find anywhere a well-organized document that describes the whole procedure. Thank you in advance for any response, Ioannis E. Venetis P.S: If you need any more information for the errors that occur, please send me a mail and I will provide the information to you. ------ Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |