annotate root-filesystem.sh @ 888:626288dd5cf3

Lots of comments.
author Rob Landley <rob@landley.net>
date Mon, 16 Nov 2009 01:45:56 -0600
parents d81382a8bb66
children db0f536aee7c
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6b4844b708b9 dash->bash.
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1 #!/bin/bash
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2
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3 # Build a root filesystem for a given target.
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4
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5 # Get lots of predefined environment variables and shell functions.
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6
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1cf41855bb85 More error checking.
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7 source sources/include.sh || exit 1
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8
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9 # Parse the sources/targets/$1 directory
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11 read_arch_dir "$1"
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12
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 $WORK dir, to preserve debugging info. Make buildall.sh depend on prerequisite tests rather than trying to avoid calling later stages (and thus do flow control from asynchronous context). Add FAIL_QUIET option so buildall.sh doesn't spam the log with the new prerequisite error messages.
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13 # If this target has a base architecture that's already been built, use that.
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15 check_for_base_arch || exit 0
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16
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17 # Die if our prerequisite isn't there.
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18
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19 for i in "$ARCH" "$FROM_ARCH"
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20 do
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21 if [ -z "$(which "${i}-cc")" ]
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22 then
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23 [ -z "$FAIL_QUIET" ] && echo No "${i}-cc" in '$PATH'. >&2
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24 exit 1
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25 fi
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26 done
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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 $WORK dir, to preserve debugging info. Make buildall.sh depend on prerequisite tests rather than trying to avoid calling later stages (and thus do flow control from asynchronous context). Add FAIL_QUIET option so buildall.sh doesn't spam the log with the new prerequisite error messages.
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28 # Announce start of stage.
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30 echo -e "$NATIVE_COLOR"
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31 echo "=== Building $STAGE_NAME"
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32
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8129df56091b Extended setupfor/cleanup to create binary package tarballs if the configure option BINARY_PACKAGE_TARBALLS is set. These tarballs extract into the current directory and add all the changed files installed by this package build, so you can pick and choose when assembling your own filesystem.
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33 blank_tempdir "$STAGE_DIR"
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34 blank_tempdir "$WORK"
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35
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36 # Determine which directory layout we're using
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37
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38 if [ -z "$ROOT_NODIRS" ]
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39 then
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40 ROOT_TOPDIR="$STAGE_DIR/usr"
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41 mkdir -p "$STAGE_DIR"/{tmp,proc,sys,dev,home,mnt} &&
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42 chmod a+rwxt "$STAGE_DIR/tmp" || dienow
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43 for i in bin sbin lib etc
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44 do
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45 mkdir -p "$ROOT_TOPDIR/$i" || dienow
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46 ln -s "usr/$i" "$STAGE_DIR/$i" || dienow
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47 done
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48 else
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49 ROOT_TOPDIR="$STAGE_DIR"
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50 mkdir -p "$STAGE_DIR/bin" || dienow
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51 fi
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52
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53 # Build C Library
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54
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55 [ -z "$C_LIBRARY" ] && C_LIBRARY=uClibc
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57 STAGE_DIR="$ROOT_TOPDIR" build_section $C_LIBRARY
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58
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59 if [ "$NATIVE_TOOLCHAIN" == "none" ]
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60 then
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61 # If we're not installing a compiler, delete the headers, static libs,
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62 # and example source code.
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63
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64 rm -rf "$ROOT_TOPDIR"/include &&
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65 rm -rf "$ROOT_TOPDIR"/lib/*.a &&
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66 rm -rf "$ROOT_TOPDIR/src" || dienow
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68 elif [ "$NATIVE_TOOLCHAIN" == "headers" ]
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69 then
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70
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71 # If you want to use a compiler other than gcc, you need to keep the headers,
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72 # so do nothing here.
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73 echo
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74
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75 else
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76
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77 # Build binutils, gcc, and ccwrap
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78
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79 STAGE_DIR="$ROOT_TOPDIR" build_section binutils-gcc
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81 # Tell future packages to link against the libraries in the new root filesystem,
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82 # rather than the ones in the cross compiler directory.
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83
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563c1abb06d0 The export command won't allow environment variable names to have dashes in them, and ccwrap.c already converts - into _ when checking ${ARCH}_WRAPPER_TOPDIR. But apparently I didn't remember to do that when _setting_ the variable. Oops.
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84 export "$(echo $ARCH | sed 's/-/_/g')"_WRAPPER_TOPDIR="$ROOT_TOPDIR"
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85
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86 # Build and install uClibc++
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87
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88 setupfor uClibc++
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89 CROSS= make defconfig &&
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90 sed -r -i 's/(UCLIBCXX_HAS_(TLS|LONG_DOUBLE))=y/# \1 is not set/' .config &&
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91 sed -r -i '/UCLIBCXX_RUNTIME_PREFIX=/s/".*"/""/' .config &&
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92 CROSS= make oldconfig &&
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93 CROSS="$ARCH"- make &&
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94 CROSS= make install PREFIX="$ROOT_TOPDIR/c++" &&
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95
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96 # Move libraries somewhere useful.
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97
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98 mv "$ROOT_TOPDIR"/c++/lib/* "$ROOT_TOPDIR"/lib &&
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99 rm -rf "$ROOT_TOPDIR"/c++/{lib,bin} &&
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100 ln -s libuClibc++.so "$ROOT_TOPDIR"/lib/libstdc++.so &&
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101 ln -s libuClibc++.a "$ROOT_TOPDIR"/lib/libstdc++.a
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102
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103 cleanup
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104
713
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105 fi # End of NATIVE_TOOLCHAIN build
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106
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107 if [ "$NATIVE_TOOLCHAIN" != "only" ]
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108 then
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109
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110 # Copy qemu setup script and so on.
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111
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112 cp -r "${SOURCES}/native/." "$ROOT_TOPDIR/" &&
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113 cp "$SRCDIR"/MANIFEST "$ROOT_TOPDIR/src" &&
837
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114 cp "${WORK}/config-${C_LIBRARY}" "$ROOT_TOPDIR/src/config-${C_LIBRARY}" || dienow
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115
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116 STAGE_DIR="$ROOT_TOPDIR"/bin build_section busybox
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117 cp "$WORK"/config-busybox "$ROOT_TOPDIR"/src || dienow
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118
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119 # Build and install make
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120
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121 setupfor make
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122 LDFLAGS="$STATIC_FLAGS $LDFLAGS" CC="${ARCH}-cc" ./configure \
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123 --prefix="$ROOT_TOPDIR" --build="${CROSS_HOST}" --host="${CROSS_TARGET}" &&
182
fc827ab6166f Autodetect number of processors and feed appropriate -j to make.
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124 make -j $CPUS &&
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125 make -j $CPUS install
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126
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127 cleanup
52
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128
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129 # Build and install bash. (Yes, this is an old version. It's intentional.)
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130
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131 setupfor bash
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132 # Remove existing /bin/sh link (busybox) so the bash install doesn't get upset.
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133 #rm "$ROOT_TOPDIR"/bin/sh
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134 # wire around some tests ./configure can't run when cross-compiling.
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135 cat > config.cache << EOF &&
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136 ac_cv_func_setvbuf_reversed=no
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137 bash_cv_sys_named_pipes=yes
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138 bash_cv_have_mbstate_t=yes
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139 bash_cv_getenv_redef=no
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140 EOF
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141 LDFLAGS="$STATIC_FLAGS $LDFLAGS" CC="${ARCH}-cc" RANLIB="${ARCH}-ranlib" \
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142 ./configure --prefix="$ROOT_TOPDIR" \
153
106f3875f606 The bash build continues to be stupid. Force RANLIB.
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143 --build="${CROSS_HOST}" --host="${CROSS_TARGET}" --cache-file=config.cache \
106f3875f606 The bash build continues to be stupid. Force RANLIB.
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144 --without-bash-malloc --disable-readline &&
183
d2a27709d3b6 Fixup the -j stuff to actually work. (typo in gcc, and uClibc can't use it.)
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145 # note: doesn't work with -j
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146 make &&
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147 make install &&
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148 # Make bash the default shell.
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149 ln -sf bash "$ROOT_TOPDIR/bin/sh"
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150
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151 cleanup
52
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152
280
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153 setupfor distcc
805
d6bf46d17ac5 Make sparc build a static version. (Yes, this involves rubbing the distcc ./configure's nose in something to avoid a gratuitous build break.) The result bots to a shell prompt! Which then has a bus error if you try to do an "ls -l" and freezes if you "echo *". Still, that's progress...
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154 rsync_cv_HAVE_C99_VSNPRINTF=yes \
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155 LDFLAGS="$STATIC_FLAGS $LDFLAGS" CC="${ARCH}-cc" ./configure \
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156 --host="${CROSS_TARGET}" --prefix="$ROOT_TOPDIR" \
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157 --with-included-popt --disable-Werror &&
293
cdd26f8acc35 Update to gcc 4.1.2->4.2.2. Still doesn't fix the internal compiler error
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158 make -j $CPUS &&
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159 make -j $CPUS install &&
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160 mkdir -p "$ROOT_TOPDIR/distcc" || dienow
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161
4b0507445452 Hook up c++ to distcc.
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162 for i in gcc cc g++ c++
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163 do
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164 ln -s ../bin/distcc "$ROOT_TOPDIR/distcc/$i" || dienow
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165 done
280
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166
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167 cleanup
280
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168
83
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169 # Put statically and dynamically linked hello world programs on there for
315
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diff changeset
170 # test purposes.
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171
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172 "${ARCH}-cc" "${SOURCES}/toys/hello.c" -Os -s -o "$ROOT_TOPDIR/bin/hello-dynamic" &&
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173 "${ARCH}-cc" "${SOURCES}/toys/hello.c" -Os -s -static -o "$ROOT_TOPDIR/bin/hello-static"
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174
8fb80545fe84 Move the "hello world" source into sources/toys. Build (in mini-native)
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175 [ $? -ne 0 ] && dienow
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176
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177 fi # End of NATIVE_TOOLCHAIN != only
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178
854
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179 if [ -z "$SKIP_STRIP" ]
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180 then
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181 # Delete some unneeded files
516
f846099333ac I can see the man pages being potentially useful, but info pages are a complete waste of space.
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182
854
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183 rm -rf "$ROOT_TOPDIR"/{info,man,libexec/gcc/*/*/install-tools}
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f846099333ac I can see the man pages being potentially useful, but info pages are a complete waste of space.
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184
854
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185 # Clean up and package the result
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6d16887ec084 Intermediate snapshot. Doesn't work yet.
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186
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187 "${ARCH}-strip" "$ROOT_TOPDIR"/{bin/*,sbin/*,libexec/gcc/*/*/*}
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188 "${ARCH}-strip" --strip-unneeded "$ROOT_TOPDIR"/lib/*.so
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189 fi
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3fd961e31444 Build a gcc wrapper for _target_, and add a "strip" command to halve the
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190
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191 create_stage_tarball
576
036dbe218036 Add BASE_ARCH support, so a hardware architecture can specify a base architecture and just provide a different kernel.
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192
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5aeba79b8f5f Remove qemu build (it's in cross-compiler.sh now), move uClibc build right
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193 # Color back to normal
52
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diff changeset
194 echo -e "\e[0mBuild complete"