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annotate cross-compiler.sh @ 507:58e9523a775d

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Tweak the readme, add comments, remove some dead code.
author Rob Landley <rob@landley.net>
date Sun, 30 Nov 2008 06:18:43 -0600
parents e98ed40c55ef
children ea7a010e5c47
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6fd189c18c1c Three things: 1) dash->bash, 2) install cross-ldd and cross-readelf,
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1 #!/bin/bash
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3 # Get lots of predefined environment variables and shell functions.
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4
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5 source sources/include.sh
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7 rm -rf "${CROSS}"
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8 mkdir -p "${CROSS}" || dienow
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9
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10 echo -e "$CROSS_COLOR"
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11 echo "=== Building cross compiler"
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12
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3e9d715e4a11 Rename CROSS_BUILD_STATIC, NATIVE_NOTOOLSDIR, NATIVE_NOTOOLCHAIN and make them work properly.
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13 [ -z "$CROSS_BUILD_STATIC" ] || STATIC_FLAGS='--static'
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15 # Build and install binutils
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17 setupfor binutils build-binutils &&
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18 AR=ar AS=as LD=ld NM=nm OBJDUMP=objdump OBJCOPY=objcopy \
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19 "${CURSRC}/configure" --prefix="${CROSS}" --host=${CROSS_HOST} \
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20 --target=${CROSS_TARGET} --with-lib-path=lib --disable-nls \
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21 --disable-shared --disable-multilib --program-prefix="${ARCH}-" \
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6dd7e870b1d4 No shipping package should ever use -Werror, no idea what new gcc versions will decide to warn on. (Fixes build on ubuntu 8.10.)
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22 --disable-werror $BINUTILS_FLAGS &&
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23 make -j $CPUS configure-host &&
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24 make -j $CPUS CFLAGS="-O2 $STATIC_FLAGS" &&
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25 make -j $CPUS install &&
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26 cd .. &&
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27 mkdir -p "${CROSS}/include" &&
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28 cp binutils/include/libiberty.h "${CROSS}/include"
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30 cleanup binutils build-binutils
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32 # Build and install gcc
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34 setupfor gcc-core build-gcc &&
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35 setupfor gcc-g++ build-gcc gcc-core &&
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36 AR_FOR_TARGET="${ARCH}-ar" "${CURSRC}/configure" $GCC_FLAGS \
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37 --prefix="${CROSS}" --host=${CROSS_HOST} --target=${CROSS_TARGET} \
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38 --enable-languages=c,c++ --enable-long-long --enable-c99 \
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39 --disable-shared --disable-threads --disable-nls --disable-multilib \
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c2215a078923 On arm, gcc has an internal compiler error building dwarf2 exceptions in mini-native. (Yes, it dies builing _itself_.) Switch to setjmp/longjmp excpetions.
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40 --enable-__cxa_atexit --disable-libstdcxx-pch --enable-sjlj-exceptions \
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41 --program-prefix="${ARCH}-" &&
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1828f3fe831e Continuing attempt to make gcc build like a normal program.
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43 # Try to convince gcc build process not to rebuild itself with itself.
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44 mkdir -p gcc &&
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45 ln -s `which gcc` gcc/xgcc &&
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47 make -j $CPUS all-gcc LDFLAGS="$STATIC_FLAGS" &&
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48 make -j $CPUS install-gcc &&
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49 cd ..
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51 cleanup gcc-core build-gcc
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53 echo Fixup toolchain... &&
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55 # Move the gcc internal libraries and headers somewhere sane.
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57 mkdir -p "${CROSS}"/gcc &&
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58 mv "${CROSS}"/lib/gcc/*/*/include "${CROSS}"/gcc/include &&
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59 mv "${CROSS}"/lib/gcc/*/* "${CROSS}"/gcc/lib &&
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60 ln -s ${CROSS_TARGET} ${CROSS}/tools &&
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61 ln -sf ../../../../tools/bin/ld ${CROSS}/libexec/gcc/*/*/collect2 &&
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63 # Build and install gcc wrapper script.
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64
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65 cd "${CROSS}"/bin &&
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66 mv "${ARCH}-gcc" "$ARCH-rawgcc" &&
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67 $CC $STATIC_FLAGS -Os -s "${SOURCES}"/toys/gcc-uClibc.c -o "${ARCH}-gcc" \
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68 -DGCC_UNWRAPPED_NAME='"'"$ARCH"-rawgcc'"' &&
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70 # Wrap C++
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72 mv "${ARCH}-g++" "${ARCH}-rawg++" &&
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73 rm "${ARCH}-c++" &&
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74 ln -s "${ARCH}-g++" "${ARCH}-rawc++" &&
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75 ln -s "${ARCH}-gcc" "${ARCH}-g++" &&
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76 ln -s "${ARCH}-gcc" "${ARCH}-c++"
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78 cleanup "${CROSS}"/{lib/gcc,{libexec/gcc,gcc/lib}/install-tools}
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80 # Install kernel headers.
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82 setupfor linux &&
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83 # Install Linux kernel headers (for use by uClibc).
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fc827ab6166f Autodetect number of processors and feed appropriate -j to make.
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84 make -j $CPUS headers_install ARCH="${KARCH}" INSTALL_HDR_PATH="${CROSS}" &&
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85 cd ..
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87 cleanup linux
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89 # Build and install uClibc
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90
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91 setupfor uClibc
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92 if unstable uClibc
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93 then
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94 CONFIGFILE=miniconfig-alt-uClibc
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95 BUILDIT="install -j $CPUS"
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96 else
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97 CONFIGFILE=miniconfig-uClibc
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98 BUILDIT="install -j $CPUS"
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99 fi
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101 make CROSS= KCONFIG_ALLCONFIG="${CONFIG_DIR}"/$CONFIGFILE allnoconfig &&
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102 make CROSS="${ARCH}-" KERNEL_HEADERS="${CROSS}/include" PREFIX="${CROSS}/" \
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103 RUNTIME_PREFIX=/ DEVEL_PREFIX=/ $BUILDIT &&
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104 cd ..
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105 cleanup uClibc
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107
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108 cat > "${CROSS}"/README << EOF &&
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109 Cross compiler for $ARCH
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110 From http://impactlinux.com/fwl
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111
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112 To use: Add the "bin" subdirectory to your \$PATH, and use "$ARCH-gcc" as
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113 your compiler.
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114
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115 The syntax used to build the Linux kernel is:
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117 make ARCH=${KARCH} CROSS_COMPILE=${ARCH}-
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119 EOF
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120
507
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121 # Strip the binaries
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122
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123 cd "$CROSS"
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124 for i in `find bin -type f` `find "$CROSS_TARGET" -type f`
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125 do
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126 strip "$i" 2> /dev/null
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127 done
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128
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129 # Tar it up
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130
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131 echo -n creating "build/cross-compiler-${ARCH}".tar.bz2 &&
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132 cd "${BUILD}"
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133 { tar cjvf "cross-compiler-${ARCH}".tar.bz2 cross-compiler-"${ARCH}" || dienow
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134 } | dotprogress
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135
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136 # A quick hello world program to test the cross-compiler out.
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137 # Build hello.c dynamic, then static, to verify header/library paths.
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138
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139 echo "Sanity test: building Hello World."
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140
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141 "${ARCH}-gcc" -Os "${SOURCES}/toys/hello.c" -o "$WORK"/hello &&
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142 "${ARCH}-gcc" -Os -static "${SOURCES}/toys/hello.c" -o "$WORK"/hello &&
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143 if which qemu-"${QEMU_TEST}" > /dev/null
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144 then
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145 [ x"$(qemu-"${QEMU_TEST}" "${WORK}"/hello)" == x"Hello world!" ] &&
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146 echo Cross-toolchain seems to work.
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147 fi
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148
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149 [ $? -ne 0 ] && dienow
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150
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151 echo -e "\e[32mCross compiler toolchain build complete.\e[0m"