| 1 | $Id$
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| 2 |
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| 3 | 1. INTRODUCTION::
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| 4 |
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| 5 | This collection of scripts, known as jhalfs, strives to create
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| 6 | accurate makefiles from the Linux From Scratch book series XML files.
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| 7 | This software is an evolution of the original "jhalfs-0.2" code developed
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| 8 | by Jeremy Huntwork.
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| 9 |
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| 10 | The usage of this script assumes you have read and are familiar with
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| 11 | the book(s) and, therefore, the configuration variables found in menuconfig
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| 12 | interface will have meaning to you.
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| 13 |
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| 14 | The list of supported books can be found at
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| 15 | http://wiki.linuxfromscratch.org/alfs/wiki/SupportedBooks
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| 16 |
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| 17 | NOTES::
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| 18 | *. The resulting Makefile takes considerable time to run to completion.
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| 19 | Lay in a supply of caffeine beverages.
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| 20 |
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| 21 | *. It is recommended that you temporarily unpack your linux kernel,
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| 22 | run <make menuconfig>, configure the kernel as per the book and save
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| 23 | the resulting .config file. This suggestion also applies to the
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| 24 | configuration of the uClibc package when building a HLFS system using
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| 25 | uClibc rather than glibc.
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| 26 |
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| 27 | *. Read carefully this file and the other README.* files before start
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| 28 | using the tool.
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| 29 |
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| 30 | 2. PREREQUISITES::
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| 31 |
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| 32 | To use this tool you MUST:
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| 33 |
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| 34 | - have experience building {c,h,b}LFS packages
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| 35 | - know how to edit and write shell scripts
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| 36 | - know how a Makefile works
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| 37 | - be able to trace build failures and to find what is causing it
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| 38 | (user error, package bug, {c,h,b}LFS command bug, or jhalfs code bug)
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| 39 |
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| 40 | If you do not have the above skills, please don't use this tool.
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| 41 |
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| 42 |
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| 43 | 3. INSTALLATION::
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| 44 |
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| 45 | No installation is required. System-wide installation is not allowed.
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| 46 |
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| 47 | 4. CONFIGURATION::
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| 48 |
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| 49 | We have installed the familiar menu based configuration tool driven by
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| 50 | GNU make. see the section RUNNING, for details
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| 51 |
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| 52 | 5. RUNNING::
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| 53 |
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| 54 | The command <make> will launch a menu based configuration program. You will
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| 55 | recognize the layout from building the kernel or uClibc/BusyBox. The
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| 56 | underlying menu code was borrowed from BusyBox and slightly modified for
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| 57 | our use.
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| 58 |
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| 59 | Help on parameter function is available from the on-line help. Please
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| 60 | make use of that feature for additional information not in this file.
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| 61 |
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| 62 | Once you have set the parameters you wish and have saved your work the
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| 63 | jhalfs script is launch. The script verify first that the host can run
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| 64 | it and build the xLFS system, then validate the configuration and present
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| 65 | you with your selections which you may accept or reject.
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| 66 |
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| 67 | If you accepted the displayed settings jhalfs will proceed to create the
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| 68 | Makefile, optionally download packages.
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| 69 |
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| 70 | ::NEWS::
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| 71 | You must be logged as a normal user with sudo privileges to run
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| 72 | the Makefile.
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| 73 |
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| 74 | NOTE::
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| 75 | If you run the jhalfs script directly the only function you can select
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| 76 | is to display the version number running <./jhalfs -v>
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| 77 |
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| 78 | 6. BLFS_TOOL SUPPORT::
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| 79 |
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| 80 | For books that support it (TODO: which ones?), there is an option
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| 81 | to install an automated framework for building BLFS packages. Let
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| 82 | us call it blfs-tool for now. When you tick `BOOK Settings/Add
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| 83 | blfs-tool support' in jhalfs configuration menu, the tools are
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| 84 | installed in $BLFS_ROOT (default /blfs_root) on the xLFS system,
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| 85 | and a few dependencies (which you may select) are built at the
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| 86 | end of the jhalfs run, before the custom tools. As of March 8, 2012,
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| 87 | works only with LFS. The instructions for building the dependencies
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| 88 | are taken from the BLFS book.
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| 89 |
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| 90 | (TODO: is this relevant to present CLFS?)
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| 91 | WARNING:: If you add blfs-tool support on a CLFS Sysroot build
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| 92 | you MUST edit the scripts to fix the installation paths.
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| 93 |
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| 94 | After booting the new xLFS system some steps are needed to finish
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| 95 | the installation of the automated tools:
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| 96 |
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| 97 | - A user account must be created. You must be logged on that user
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| 98 | account to use blfs-tool. This is not strictly necessary,
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| 99 | since the packages can be built as root, too, but it is
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| 100 | never a good idea to build packages as root.
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| 101 |
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| 102 | - Move /blfs-root to that user's home and change ownership of the
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| 103 | directory and files to the user.
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| 104 |
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| 105 | - Give the user read and write privileges over the $TRACKING_DIR
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| 106 | directory and the files that it contains.
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| 107 |
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| 108 | - Configure sudo, adding the needed privileges for the user. For
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| 109 | newer sudo version, do not forget to add a line Defaults secure_path=
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| 110 | containing /sbin and /usr/sbin (in /etc/sudoers), otherwise some
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| 111 | executables are not found.
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| 112 |
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| 113 | - Although it is not strictly necessary, it is recommended to install
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| 114 | the bash shell startup files (as per `3.After LFS Configuration
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| 115 | Issues' of the BLFS book), as some instructions in BLFS rely on
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| 116 | their being present.
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| 117 |
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| 118 | We assume that blfs-tool will be used on a running fresh xLFS system.
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| 119 | To use it to build BLFS packages from the chroot jail is also possible,
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| 120 | but not supported.
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| 121 |
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| 122 | To know how to use blfs-tool, see README.BLFS.
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| 123 |
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| 124 | 7. LAYOUT::
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| 125 |
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| 126 | /BLFS (see README.BLFS)
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| 127 |
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| 128 | /CLFS/master.sh
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| 129 | /clfs.xsl
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| 130 |
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| 131 | /CLFS2/master.sh
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| 132 | /clfs2.xsl
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| 133 |
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| 134 | /CLFS3/master.sh
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| 135 | /clfs3.xsl
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| 136 |
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| 137 | /HLFS/master.sh
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| 138 | /hlfs.xsl
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| 139 |
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| 140 | /LFS/master.sh
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| 141 | /lfs.xsl
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| 142 |
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| 143 | /common/common_functions
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| 144 | /makefile_functions
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| 145 | /packages.xsl
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| 146 | /urls.xsl
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| 147 | /create-sbu_du-report.sh
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| 148 | /progress_bar.sh
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| 149 | /blfs-tool-deps/9xx-*
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| 150 | /libs/func_*
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| 151 |
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| 152 | /custom/template
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| 153 | /config/
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| 154 | /examples/*
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| 155 | /examples_CLFS-E/*
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| 156 |
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| 157 | /extras/do_copy_files
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| 158 | /do_ica_prep
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| 159 | /do_ica_work
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| 160 | /farce
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| 161 | /filelist
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| 162 |
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| 163 | /optimize/opt_config
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| 164 | /opt_override
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| 165 | /optimize_functions
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| 166 | /opt_config.d/noOpt
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| 167 | /noSymbols
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| 168 | /O3pipe
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| 169 | /O3pipe_march
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| 170 | /defOpt_fPIC
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| 171 |
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| 172 | /menu/*
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| 173 |
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| 174 | README
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| 175 | README.BLFS
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| 176 | README.CLFS
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| 177 | README.HLFS
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| 178 | README.CUSTOM
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| 179 | TODO
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| 180 | LICENSE
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| 181 |
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| 182 | Config.in
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| 183 | Makefile
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| 184 | jhalfs
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| 185 | blfs-tool
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| 186 |
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| 187 | 8. FAQ::
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| 188 | Q. "This 'help' file is very sparse"
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| 189 | A. Yes, it is. This tool, jhalfs, is for those who understand the LFS books
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| 190 | and wish to automate the build. 99% of any problems that arise can be
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| 191 | solved by reading the book(s).
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| 192 |
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| 193 | Q. "It doesn't work!"
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| 194 | A. Yes it does, try >> make
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| 195 | Remember you must have 'sudo' privileges.
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| 196 |
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| 197 | Q. "It still doesn't work"
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| 198 | A. jhalfs was designed to work against the development versions of the LFS
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| 199 | series of books. Consequently changes in a book(s) sometimes breaks older
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| 200 | versions of jhalfs. Before you start pulling out your hair download the
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| 201 | latest version of jhalfs to see if that solves your problem.
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| 202 |
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| 203 | Q. "How do I specify the build location?"
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| 204 | A. The original LFS document worked against the well known location /mnt/lfs.
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| 205 | This script automates the build of all of the LFS series of books and uses
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| 206 | a generic location $BUILDDIR with a default value of /mnt/build_dir.
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| 207 | You may change this value to suit your needs.
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| 208 |
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| 209 | The layout below $BUILDDIR is as follows.
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| 210 | $BUILDDIR/
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| 211 | jhalfs (Makefile, cmd scripts, logs, etc..)
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| 212 | sources (where packages reside)
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| 213 | tools (temporary bootstrap system)
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| 214 | cross-tools (temporary CLFS only)
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| 215 | ...
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| 216 | FHS dir structure
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| 217 | ...
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| 218 | blfs_root (files to use blfs-tool if selected to install it)
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| 219 |
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| 220 | Q. "What is the function of the SRC_ARCHIVE variable?"
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| 221 | A. When jhalfs runs and packages download was selected, it creates a local
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| 222 | copy of the necessary packages in BUILDDIR/sources by downloading the
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| 223 | files. If the variable SRC_ARCHIVE is defined the software will first
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| 224 | look in this location for the file and, if found, will copy it to
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| 225 | BUILDDIR/sources.
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| 226 | If the files are not found in SRC_ARCHIVE _and_ you have write priv to
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| 227 | the directory any downloaded files will be mirrored there.
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| 228 |
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| 229 | Q. "How do I set the SRC_ARCHIVE location?"
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| 230 | A. The best way to set the value of SRC_ARCHIVE is
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| 231 |
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| 232 | export SRC_ARCHIVE=/wherever/you/store/downloaded/packages
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| 233 |
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| 234 | or you can set the full path in the proper menu entry.
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| 235 |
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| 236 | Q. "Why have 2 copies of the files?"
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| 237 | A. The package files must be visible during the chroot phase and this is a
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| 238 | simple and reliable method of doing so. This method also handles the CLFS
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| 239 | boot build method where the final build may be done on a separate machine.
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| 240 |
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| 241 | Q. "What is the function of "User account" and "Group account" menu settings?"
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| 242 | A. If you are running jhalfs from a low or non-privileged account you may not
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| 243 | have the priv to create/delete the user needed to build temporary tools.
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| 244 | These settings allow you to use your own user and group name to do that
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| 245 | build steps.
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| 246 |
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| 247 | These variables are adjustable also when invoking make:
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| 248 |
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| 249 | $BUILDDIR make LUSER=myaccount LGROUP=mygroup
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| 250 |
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| 251 | The only changes to your account will be the creation of a NEW .bashrc
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| 252 | after saving your original to .bashrc.XXX
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| 253 |
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| 254 | Q. "When I try to build CLFS the Makefile fails at the mid-point"
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| 255 | A. There could be numerous reasons for the failure but the most likely reason
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| 256 | is you are doing a cross-build using the 'chroot' method and the target is
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| 257 | not compatible with the host. If you choose to build using the chroot
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| 258 | method a test is performed at the end of the temptools phase. If the test
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| 259 | succeeds the build continues inside a chroot jail. However if the test fails
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| 260 | it means the host and target are not compatible an you should use the
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| 261 | 'boot' method to create your target code.
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| 262 | As an extreme example: You can build a sparc target on a x86 platform but
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| 263 | only the temptools phase. You must select the 'boot' method and not the
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| 264 | 'chroot.' You must transfer the toolchain to a sparc platform, reboot the
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| 265 | sparc box and continue the build.
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| 266 | Of all the LFS series of books Cross-LFS requires the greatest
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| 267 | understanding of host/target hardware combination. Please read the book
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| 268 | carefully and don't skip the easy parts (there are none..)
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| 269 |
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| 270 | Q. "How could I stop the build at a predefined chosen point?"
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| 271 | A. Launch the Makefile manually passing the last numbered target to be build
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| 272 | as the break point. For example:
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| 273 |
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| 274 | make BREAKPOINT=84-bash
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| 275 |
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| 276 | The build can be stopped also at the end of a top-level build phase by
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| 277 | calling directly the appropriate mk_* target. For example:
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| 278 |
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| 279 | make mk_LUSER
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| 280 |
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| 281 | See the Makefile to know the proper target names for that book build.
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| 282 |
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| 283 | Authors:
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| 284 | George Boudreau
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| 285 | Manuel Canales Esparcia
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