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annotate build.sh @ 1684:7b4566efd8bd draft 1.2.8

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Silence some asynchronous messages linux produces on top of the shell prompt.
author Rob Landley <rob@landley.net>
date Sun, 07 Sep 2014 10:39:51 -0500
parents 045160e8ad71
children dcb7e74a7a71
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/bin/bash
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2
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3 # Run all the steps needed to build a system image from scratch.
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4
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5 # The default set of stages run by this script is (in order):
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6 # download, host-tools, simple-cross-compiler, simple-root-filesystem,
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7 # native-compiler, root-filesystem, system-image.
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8
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9 # That sanitizes the host build environment and builds a cross compiler,
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10 # cross compiles a root filesystem and a native toolchain for the target,
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11 # and finally packages the root filesystem up into a system image bootable
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12 # by qemu.
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14 # The simplest set of stages is:
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15 # download, simple-cross-compiler, simple-root-filesystem, system-image.
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16 #
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17 # That skips sanitizing the host environment, and skips building the native
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18 # compiler. It builds a system image containing just enough code to boot to
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19 # a command prompt. To invoke that, do:
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20 #
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21 # NO_HOST_TOOLS=1 NO_NATIVE_COMPILER=1 ./build.sh $TARGET
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23 # The optional cross-compiler stage (after simple-cross-compiler but before
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24 # simple-root-filesystem) creates a more powerful and portable cross compiler
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25 # that can be used to cross compile more stuff (if you're into that sort of
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26 # thing). To enable that:
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27
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28 # CROSS_COMPILER_HOST=i686 ./build.sh $TARGET
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29
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30 # Where "i686" is whichever target you want the new cross compiler to run on.
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31
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32 # If this script was run with no arguments, list available architectures
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33
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34 [ ! -z "$2" ] && REBUILD="$2"
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35
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36 if [ $# -lt 1 ] || [ $# -gt 2 ] || [ ! -e sources/targets/"$1" ]
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37 then
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38 echo
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39 echo "Usage: $0 TARGET [REBUILD_FROM_STAGE]"
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40 echo
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41 echo "Supported architectures:"
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42 ls sources/targets
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43 echo
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44 echo "Build stages:"
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45 sed -n 's/#.*//;s@.*[.]/\([^.]*\)[.]sh.*@\1@p' "$0" | uniq | xargs echo
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46 echo
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48 exit 1
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49 fi
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50 ARCH="$1"
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51
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52 # Use environment variables persistently set in the config file.
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53
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54 [ -e config ] && source config
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56 # Allow the output directory to be overridden. This hasn't been tested in
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57 # forever and probably doesn't work.
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58
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59 [ -z "$BUILD" ] && BUILD="build"
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61 # Very simple dependency tracking: skip stages that have already been done
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62 # (because the tarball they create is already there).
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64 # If you need to rebuild a stage (and everything after it), delete its
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65 # tarball out of "build" and re-run build.sh.
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66
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67 not_already()
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68 {
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69 [ "$REBUILD" == "$1" ] && zap "$1"
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70
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71 if [ -f "$BUILD/$1-$ARCH.tar.bz2" ]
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72 then
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73 echo "=== Skipping $1-$ARCH (already there)"
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74 return 1
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75 fi
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76
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77 return 0
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78 }
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79
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80 zap()
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81 {
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82 for i in "$@"
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83 do
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84 rm -f "$BUILD/$i-$ARCH.tar.bz2"
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85 done
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86 }
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87
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88 # The first two stages (download.sh and host-tools.sh) are architecture
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89 # independent. In order to allow multiple builds in parallel, re-running
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90 # them after they've already completed must be a safe NOP.
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91
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92 # Download source code.
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93
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94 time ./download.sh || exit 1
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95
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96 # Build host tools. This populates a single directory with every command the
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97 # build needs, so we can ditch the host's $PATH afterwards.
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98
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99 if [ -z "$NO_HOST_TOOLS" ]
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100 then
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101 time ./host-tools.sh || exit 1
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102 fi
944
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103
941
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104 # Do we need to build the simple cross compiler?
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105
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106 if not_already simple-cross-compiler
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107 then
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108 # If we need to build cross compiler, assume root filesystem is stale.
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109
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110 zap simple-root-filesystem linux-kernel
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111
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112 time ./simple-cross-compiler.sh "$ARCH" || exit 1
781
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113 fi
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114
1007
48784ae8533e Move CROSS_SMOKE_TEST implementation out of simple-cross-compiler.sh and into sources/more/cross-smoke-test.sh, called from build.sh. Clean up comments a bit while we're there.
Rob Landley <rob@landley.net>
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115 # Optionally, we can build a more capable statically linked compiler via
48784ae8533e Move CROSS_SMOKE_TEST implementation out of simple-cross-compiler.sh and into sources/more/cross-smoke-test.sh, called from build.sh. Clean up comments a bit while we're there.
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116 # canadian cross. (It's more powerful than we need here, but if you're going
48784ae8533e Move CROSS_SMOKE_TEST implementation out of simple-cross-compiler.sh and into sources/more/cross-smoke-test.sh, called from build.sh. Clean up comments a bit while we're there.
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117 # to use the cross compiler in other contexts this is probably what you want.)
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118
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119 if [ ! -z "$CROSS_COMPILER_HOST" ] && not_already cross-compiler
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120 then
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121 zap simple-root-filesystem linux-kernel
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122
1212
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123 # Build the host compiler if necessary
19f3be2b4d04 Teach build.sh to build host compiler if necessary for CROSS_HOST_ARCH.
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124
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125 if ARCH="$CROSS_COMPILER_HOST" not_already simple-cross-compiler
1212
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126 then
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127 time ./simple-cross-compiler.sh "$CROSS_COMPILER_HOST" || exit 1
1212
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128 fi
19f3be2b4d04 Teach build.sh to build host compiler if necessary for CROSS_HOST_ARCH.
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129
1129
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130 time ./cross-compiler.sh "$ARCH" || exit 1
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131 fi
037488e9889d New build.sh that actually uses the new infrastructure, if STATIC_CROSS_COMPILER_HOST or BUILD_STATIC_NATIVE_COMPILER are set.
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132
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133 # Build the basic root filesystem.
539
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Rob Landley <rob@landley.net>
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134
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135 if not_already simple-root-filesystem
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136 then
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137 # If we need to build root filesystem, assume root-filesystem and
1350
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138 # root-image are stale.
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139
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140 zap root-filesystem root-image
539
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141
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142 time ./simple-root-filesystem.sh "$ARCH" || exit 1
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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143
781
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144 fi
d8c780ed3686 Simplify build.sh to take exactly one argument. (Otherwise use buildall.sh.)
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145
1128
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146 # Build a native compiler. It's statically linked by default so it can
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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147 # run on an arbitrary host system.
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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148
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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149 if not_already native-compiler && [ -z "$NO_NATIVE_COMPILER" ]
e5f9681a8b3c Lots of comment updates. Add a NO_HOST_TOOLS=1 config option, and a few "time" calls to stages that didn't have them. Put native-compiler.sh after root-filesystem.sh in build so it's slightly easier to document.
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150 then
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151 zap root-filesystem root-image
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152
e5f9681a8b3c Lots of comment updates. Add a NO_HOST_TOOLS=1 config option, and a few "time" calls to stages that didn't have them. Put native-compiler.sh after root-filesystem.sh in build so it's slightly easier to document.
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153 time ./native-compiler.sh "$ARCH" || exit 1
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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154 fi
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155
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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156 # Install the native compiler into the root filesystem, if necessary.
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157
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158 if not_already root-filesystem && [ -z "$NO_NATIVE_COMPILER" ]
1062
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159 then
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160 zap root-image
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161
1116
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162 time ./root-filesystem.sh "$ARCH" || exit 1
1062
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parents: 1045
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163 fi
abc8ddd4d9f0 Don't have root-filesystem.sh suck in the native-compiler.sh output, have build.sh collate those instead before calling system-image.sh. (That way the root-filesystem.sh tarball does't include the native compiler output.)
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164
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165 # Create filesystem image from [simple-]root-filesystem directory
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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166
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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diff changeset
167 if not_already root-image
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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168 then
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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parents: 1228
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169 zap system-image
1378
47853d06dd3f Rebuilding root-image should also rebuild linux-kernel for initramfs builds.
Rob Landley <rob@landley.net>
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170 [ "$SYSIMAGE_TYPE" == initramfs ] && zap linux-kernel
1350
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171
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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172 time ./root-image.sh "$ARCH" || exit 1
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diff changeset
173 fi
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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174
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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175 # Build a kernel. (Possibly includes cpio file for initramfs image type.)
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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176
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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diff changeset
177 if not_already linux-kernel
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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178 then
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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diff changeset
179 zap system-image
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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180
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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diff changeset
181 time ./linux-kernel.sh "$ARCH" || exit 1
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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182 fi
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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diff changeset
183
7eabfa815c90 Split up system-image.sh into root-image.sh, linux-kernel.sh, and system-image.sh. Rename CROSS_HOST_ARCH to CROSS_COMPILER_HOST.
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184 # Package it all up into something qemu can boot.
1128
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185
786
8b5ea56e7507 Teach build.sh not to rebuild static compilers if they're already there.
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diff changeset
186 if not_already system-image
781
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187 then
d8c780ed3686 Simplify build.sh to take exactly one argument. (Otherwise use buildall.sh.)
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188 time ./system-image.sh $1 || exit 1
d8c780ed3686 Simplify build.sh to take exactly one argument. (Otherwise use buildall.sh.)
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189 fi