annotate simple-root-filesystem.sh @ 1139:2c6d799f0451

Fix a dangling symlink that confuses root-filesystem.sh, and add some comments.
author Rob Landley <rob@landley.net>
date Tue, 22 Jun 2010 17:52:27 -0500
parents 1ad777637d2d
children 73e5bcfa9f63
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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6b4844b708b9 dash->bash.
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1 #!/bin/bash
43
6d16887ec084 Intermediate snapshot. Doesn't work yet.
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2
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2b68517f5b62 Break out simple-root-filesystem.sh and root-filesystem.sh (adding native-compiler.sh output), and use NO_NATIVE_COMPILER to determine which to use. Rename STATIC_CC_HOST to CROSS_HOST_ARCH.
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3 # Build a basic busybox+uClibc root filesystem for a given target.
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626288dd5cf3 Lots of comments.
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4
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e5f9681a8b3c Lots of comment updates. Add a NO_HOST_TOOLS=1 config option, and a few "time" calls to stages that didn't have them. Put native-compiler.sh after root-filesystem.sh in build so it's slightly easier to document.
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5 # Requires a cross-compiler (or simple-cross-compiler) in the $PATH or in
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6 # the build directory. In theory you can supply your own as long as the
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7 # prefix- name is correct.
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8
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1cf41855bb85 More error checking.
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9 source sources/include.sh || exit 1
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759adf5a0fe9 Refactor so include.sh mostly just sets environment variables. Move read_arch_dir to function and call it explicitly (no more need for $NO_ARCH). Make blank_tempdir a function, called explicitly by stages when needed, with some sanity checks. Insert prerequisite tests to later stages so they can detect failure early and provide an explicit erro rmessage, and have those tests happen before blanking $WORK dir, to preserve debugging info. Make buildall.sh depend on prerequisite tests rather than trying to avoid calling later stages (and thus do flow control from asynchronous context). Add FAIL_QUIET option so buildall.sh doesn't spam the log with the new prerequisite error messages.
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10 read_arch_dir "$1"
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11 check_for_base_arch || exit 0
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12 check_prerequisite "${ARCH}-cc"
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90ab1a1f4db5 Teach build not to rebuild base architecture toolchains. Factor out some common code while there.
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13
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890aa372ee30 Remove old USE_COLOR code, superceded by set_titlebar.
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14 # Announce start of stage.
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15
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16 echo "=== Building $STAGE_NAME"
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17
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dc5512d734f0 Actually put MANIFEST into mini-native.
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18 # Determine which directory layout we're using
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19
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20 if [ -z "$ROOT_NODIRS" ]
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d2820523ee06 When doing BUILD_SHORT (without development tools), use / instead of /tools.
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21 then
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22 mkdir -p "$STAGE_DIR"/{tmp,proc,sys,dev,home,mnt} &&
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23 chmod a+rwxt "$STAGE_DIR/tmp" || dienow
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24
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25 # Having lots of repeated locations at / and also under /usr is silly, so
2c6d799f0451 Fix a dangling symlink that confuses root-filesystem.sh, and add some comments.
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26 # symlink them together. (The duplication happened back in the 1970's
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27 # when Ken and Dennis ran out of space on their first RK05 disk pack and
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28 # leaked the OS into the disk containing the user home directories. It's
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29 # been mindlessly duplicated ever since.)
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30 for i in bin sbin lib etc
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31 do
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32 mkdir -p "$STAGE_DIR/usr/$i" &&
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33 ln -s "usr/$i" "$STAGE_DIR/$i" || dienow
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34 done
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36 # Have only one man page directory. (And make sure it exists so dangling
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37 # symlinks don't confuse the cp in root-filesystem.sh.)
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38 ln -s share/man "$STAGE_DIR/usr/man" &&
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39 mkdir -p "$STAGE_DIR/usr/share/man" || dienow
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41 STAGE_DIR="$STAGE_DIR/usr"
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42 else
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43 mkdir -p "$STAGE_DIR/bin" || dienow
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44 fi
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46 # Copy qemu setup script and so on.
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47
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48 cp -r "${SOURCES}/native-root/." "$STAGE_DIR/" &&
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49 cp "$SRCDIR"/MANIFEST "$STAGE_DIR/src" || dienow
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51 # Build busybox and toybox
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52
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53 build_section busybox
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54 cp "$WORK"/config-busybox "$STAGE_DIR"/src || dienow
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55 build_section toybox
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57 # Build the world's simplest init program: spawns one task with a controlling
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58 # TTY, waits (reaping zombies) until it exits, then shuts down the system.
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60 ${ARCH}-cc "$SOURCES/toys/oneit.c" -Os $CFLAGS -o "$STAGE_DIR/sbin/oneit" ||
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61 dienow
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62
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63 # Put statically and dynamically linked hello world programs on there for
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64 # test purposes.
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65
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66 "${ARCH}-cc" "${SOURCES}/toys/hello.c" -Os $CFLAGS -o "$STAGE_DIR/bin/hello-dynamic" || dienow
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67
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68 if [ "$BUILD_STATIC" != none ]
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69 then
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70 "${ARCH}-cc" "${SOURCES}/toys/hello.c" -Os $CFLAGS -static -o "$STAGE_DIR/bin/hello-static" || dienow
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71 fi
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72
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73 # Do we need shared libraries?
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75 if [ "$BUILD_STATIC" != all ]
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76 then
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77 echo Copying compiler libraries...
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78 mkdir -p "$STAGE_DIR/lib" || dienow
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79 (path_search \
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80 "$("$ARCH-cc" --print-search-dirs | sed -n 's/^libraries: =*//p')" \
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81 "*.so*" 'cp -H "$DIR/$FILE" "$STAGE_DIR/lib/$FILE"' \
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82 || dienow) | dotprogress
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83 fi
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84
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85 # Clean up and package the result
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86
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87 if [ -z "$SKIP_STRIP" ]
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88 then
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89 "${ARCH}-strip" "$STAGE_DIR"/{bin/*,sbin/*,libexec/gcc/*/*/*}
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90 "${ARCH}-strip" --strip-unneeded "$STAGE_DIR"/lib/*.so
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91 fi
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3fd961e31444 Build a gcc wrapper for _target_, and add a "strip" command to halve the
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92
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93 create_stage_tarball
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94
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95 # Color back to normal
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96 echo -e "\e[0mBuild complete"