Mercurial > hg > aboriginal
annotate sources/toys/README.footer @ 1727:45c936d93711 draft
Drop ROOT_NODIRS, it's not worth the complexity to support both layouts.
author | Rob Landley <rob@landley.net> |
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date | Sun, 11 Jan 2015 12:01:30 -0600 |
parents | a32c75dcf508 |
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Add README.footer to end of README. (Rename README.txt->README)
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1 |
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2 Each cross-compiler tarball contains a uClibc cross compiler for a given |
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3 target; the target binaries they produce are linked against uClibc. For |
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4 maximum portability, they are compiled for an i686 host and statically linked |
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5 against i686 uClibc on the host. |
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6 |
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7 To try out uClibc on your system, you might do something like: |
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8 |
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9 tar -xvjf cross-compiler-i686.tar.bz2 |
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10 export PATH=`pwd`/cross-compiler-i686/bin:$PATH |
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11 i686-gcc -static hello_world.c -o hello_world |
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12 ./hello_world |
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13 |
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14 Each mini-native tarball contains a small native root filesystem (uClibc-based), |
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15 with busybox, uClibc, and a native compiler toolchain supporting C (uClibc) |
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16 and C++ (uClibc++). To try these out, you might go: |
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17 |
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18 tar -xvjf mini-native-x86_64.tar.bz2 |
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19 sudo chroot mini-native-x86_64 /bin/chroot-setup.sh |
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20 g++ /tools/src/hello.cpp |
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21 ./a.out |
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22 |
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23 The system-image tarballs contain the same root filesystem as mini-native, |
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24 packaged as an ext2 image, along with a kernel configured for use with |
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25 qemu (0.9.1 or later) and shell scripts to run the images under qemu: |
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26 |
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27 1) run-emulator.sh - simple script to boot qemu |
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28 |
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29 2) run-with-home.sh - adds an empty 2 gigabyte ext3 image mounted on /home |
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30 |
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31 3) run-with-distcc.sh - adds distcc support calling out to the cross compiler |
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32 on the host system (on top of run-with-home's hdb image). |
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33 |
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34 The logs directory contains build logs. These are only of interest if you |
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35 plan to reproduce these from source and can't get it to work on the first try. |
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36 |
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37 Note that chrooting into mini-native-i686 on an x86_64 host may not give you |
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38 a good build environment, because /proc will still show an x86_64 host kernel |
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39 in an i686 chroot, and this confuses many ./configure scripts. |
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40 |
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41 Cross compiling is tricky. The easy way to build packages is to build fully |
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42 natively, either by booting a system image under qemu or by finding real |
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43 target hardware to build on. |