annotate simple-cross-compiler.sh @ 1378:47853d06dd3f

Rebuilding root-image should also rebuild linux-kernel for initramfs builds.
author Rob Landley <rob@landley.net>
date Wed, 15 Jun 2011 20:11:39 -0500
parents 9252453c40d0
children b74d36876c0a
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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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9add2b1ccdfa First version of new build script. Does nothing, but does it correctly.
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3 # Build a simple cross compiler for the specified target.
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5 # This simple compiler has no thread support, no libgcc_s.so, doesn't include
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6 # uClibc++, and is dynamically linked against the host's shared libraries.
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8 # Its stripped down nature makes it easy to build on an arbitrary host, and
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9 # provides just enough capability to build a root filesystem, and to be used
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10 # as a distcc accelerator from within that system.
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11
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626288dd5cf3 Lots of comments.
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13 # Get lots of predefined environment variables and shell functions.
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1b721a51e9c6 Extract headers, build cross-binutils, build cross-gcc. Needs a C library.
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1cf41855bb85 More error checking.
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15 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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17 # Parse the sources/targets/$1 directory
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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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19 read_arch_dir "$1"
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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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 $WORK dir, to preserve debugging info. Make buildall.sh depend on prerequisite tests rather than trying to avoid calling later stages (and thus do flow control from asynchronous context). Add FAIL_QUIET option so buildall.sh doesn't spam the log with the new prerequisite error messages.
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21 # If this target has a base architecture that's already been built, use that.
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23 check_for_base_arch || exit 0
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24
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25 export TOOLCHAIN_PREFIX="${ARCH}-"
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d1a88d878e18 Factor out and unify binutils, gcc, and ccwrap builds.
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27 # Build binutils, gcc, and ccwrap
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4b96ad732432 Add basic c++ support to the cross compiler. (No headers or libraries, but enough to cross compile uClibc++ in mini-native and use distcc with the cross compiler for C++.)
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29 build_section binutils
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30 build_section gcc
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31 build_section ccwrap
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32
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33 # Build C Library
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35 build_section linux-headers
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36 build_section uClibc
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1b721a51e9c6 Extract headers, build cross-binutils, build cross-gcc. Needs a C library.
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37
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e2fc10ede93f Consistently use STAGE_DIR as the output directory. (root-filesystem.sh already did, host-tools.sh was using $HOSTTOOLS, cross-compiler.sh was using $CROSS, and system-image.sh was using SYSIMAGE.)
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38 cat > "${STAGE_DIR}"/README << EOF &&
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39 Cross compiler for $ARCH from http://aboriginal.impactlinux.com
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41 To use: Add the "bin" subdirectory to your \$PATH, and use "$ARCH-cc" as
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42 your compiler.
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43
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44 The syntax used to build the Linux kernel is:
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45
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46 make ARCH=${KARCH} CROSS_COMPILE=${ARCH}-
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48 EOF
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49
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50 # Strip the binaries
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0f77e2472d27 Strip binaries.
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52 if [ -z "$SKIP_STRIP" ]
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53 then
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54 cd "$STAGE_DIR"
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55 for i in `find bin -type f` `find "$CROSS_TARGET" -type f`
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56 do
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57 strip "$i" 2> /dev/null
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58 done
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59 fi
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61 # A quick hello world program to test the cross compiler out.
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62 # Build hello.c dynamic, then static, to verify header/library paths.
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64 echo "Sanity test: building Hello World."
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66 "${ARCH}-gcc" -Os "${SOURCES}/toys/hello.c" -o "$WORK"/hello &&
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67 "${ARCH}-gcc" -Os -static "${SOURCES}/toys/hello.c" -o "$WORK"/hello || dienow
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69 # Does the hello world we just built actually run?
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71 if [ ! -z "$CROSS_SMOKE_TEST" ]
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72 then
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73 more/cross-smoke-test.sh "$ARCH" || exit 1
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74 fi
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75
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76 # Tar it up
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77
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78 create_stage_tarball
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80 echo -e "\e[32mCross compiler toolchain build complete.\e[0m"