The LXR Cross Referencer for SOS

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001 
002 Contents of the extra/ directory
003 ================================
004 
005 Data and configuration files to support generation of sos on non-x86
006 and/or grub-less hosts:
007  - dot.mkvars: file to copy as .mkvars in the root directory to
008    compile on a non-x86 host, and to generate the grub floppy image on
009    a grub-less host
010  - grub.img.gz: compressed image of a Grub floppy (without any
011    kernel). Used by dot.mkvars.
012  - mtoolsrc: file needed by .mkvars to compile a the floppy image
013 
014 Support of a sos-specific boot sector:
015  - Makefile: rules to compile sos_bsect.img, the floppy image with the
016    boot sector and the Sos
017  - bootsect.S: x86 Sos boot sector (GNU as). Depends on sos_bsect.lds
018  - sos_bsect.lds: ld script to bind the boot sector with the remaining
019    of the kernel
020 
021 Misc:
022  - qemu-port-e9.diff: patch over qemu to support the bochs "port 0xe9 hack"
023 
024 
025 What you can do with these files
026 ================================
027 
028 
029 *** Compile SOS from another architecture:
030 ------------------------------------------
031  - compile a cross-compiler for the i586-gnu target. This involves
032    compiling the binutils and gcc. Here are example configuration
033    options for them:
034    binutils (replace sparc-cun-solaris with your arch):
035      ../binutils-2.13/configure --prefix=/udd/ddecotig/temp_dd/xgcc/host-sparc-solaris7/stow/binutils-2.11 --host=sparc-sun-solaris2.7 i586-gnu
036      make && make install
037    gcc (ditto):
038      CFLAGS="-O2 -Dinhibit_libc" ../gcc-3.2/configure --target=i586-gnu --prefix=/udd/ddecotig/temp_dd/xgcc/host-sparc-solaris7/stow/gcc-3.2 --with-as=/udd/ddecotig/temp_dd/xgcc/host-sparc-solaris7/bin/as --with-ld=/udd/ddecotig/temp_dd/xgcc/host-sparc-solaris7/bin/ld --with-gnu-as --with-gnu-ld --enable-languages=c --disable-shared --disable-multilib --disable-nls --enable-threads=single
039      make && make install
040  - compile the mtools
041  - copy dot.mkvars to the root directory of SOS, as ".mkvars"
042  - customize the CC/LD/... variables to suit your cross-compiler
043    installatioon
044  - now you may run make from the SOS root directory, it should
045    generate the Grub boot floppy image. The following warning is
046    normal:
047      .mkvars:16: attention : écrasement des commandes pour la cible « grub-sos.img »
048      Makefile:92: attention : anciennes commandes ignorées pour la cible « grub-sos.img »
049 
050 
051 *** To compile SOS from an x86 where grub is not or incorrectly installed:
052 --------------------------------------------------------------------------
053  - copy dot.mkvars to the root directory of SOS, as ".mkvars"
054  - customize the CC/LD/... variables to suit your cross-compiler
055    installatioon
056  - now you may run make from the SOS root directory, it should
057    generate the Grub boot floppy image. The following warning is
058    normal:
059      .mkvars:16: attention : écrasement des commandes pour la cible « grub-sos.img »
060      Makefile:92: attention : anciennes commandes ignorées pour la cible « grub-sos.img »
061 
062 
063 *** To compile SOS with its own bootloader:
064 -------------------------------------------
065  - for cross-architecture compilation: see above
066  - cd to this extra/ directory
067  - run 'make'
068  - the floppy image is: sos_bsect.img
069  NOTE : SOS will not boot correctly this way after article 2 !
070 
071 
072 --
073 David Decotigny
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