| 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.
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| 8 |
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| 9 | The usage of this script assumes you have read and are familiar with
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| 10 | the book(s) and, therefore, the configuration variables found in config
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| 11 | files will have meaning to you. There are a number of command line switches
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| 12 | which, if used, will override the config file settings.
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| 13 |
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| 14 | NOTES::
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| 15 | *. The resulting Makefile takes considerable time to run to completion.
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| 16 | Lay in a supply of caffeine beverages.
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| 17 |
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| 18 | *. It is recommended that you temporarily unpack your linux kernel,
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| 19 | run <make menuconfig>, configure the kernel as per the book and save
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| 20 | the resulting .config file. This suggestion also applies to the
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| 21 | configuration of the uClibc package when building a HLFS system using
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| 22 | uClibc rather than glibc.
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| 23 |
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| 24 | 2. PREREQUISITES::
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| 25 |
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| 26 | To use this tool you MUST:
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| 27 |
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| 28 | - have experience building {c,h,b}LFS packages
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| 29 | - know how to edit and write shell scripts
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| 30 | - know how a Makefile works
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| 31 | - be able to trace build failures and to find what is causing it
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| 32 | (user error, package bug, {c,h,b}LFS command bug, or jhalfs code bug)
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| 33 |
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| 34 | If you don't have the above skill, please don't use this tool.
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| 35 |
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| 36 |
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| 37 | 3. INSTALLATION::
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| 38 | No installation is required. System-wide installation is not allowed
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| 39 | for now.
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| 40 |
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| 41 | 4. CONFIGURATION FILES::
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| 42 | Each book in the LFS series has its own set of configurable parameters
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| 43 | as well as the common parameters file.
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| 44 |
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| 45 | ::NEWS:: There is new configuration method for jhalfs.
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| 46 |
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| 47 | We have installed the familiar menu based configuration tool driven by
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| 48 | make. If you type the command
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| 49 | make
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| 50 | you will be presented with a list of configurable parameters (starting
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| 51 | with the book you wish to use). All the parameters found in the individual
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| 52 | config files are available. Once you have finished setting the parameters
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| 53 | and exit the make file will launch the chosen book version of jhalfs.
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| 54 | JHALFS will import your created file and overider the values found in normal
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| 55 | "config" files.
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| 56 | ..note.. The generated file <configuration> is only used by jhalfs if you
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| 57 | run jhalfs via make otherwise it is ignored.
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| 58 |
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| 59 | If you want to try out the new configuration system without running jhalfs
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| 60 | issue the following.
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| 61 | make menuconfig
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| 62 | This will create a new file named configuration but will not launch jhalfs.
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| 63 |
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| 64 | 5. RUNNING::
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| 65 | The script master.sh cannot be invoked directly but only via the
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| 66 | supplied symlinks. After editing the config file for the project you wish
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| 67 | to build, run the script.
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| 68 |
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| 69 | IMPORTANT:
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| 70 | If you use the switch -M (automatically run the generated makefile) you
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| 71 | must be 'root' or you can run the scripts using 'sudo'
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| 72 | i.e. sudo ./lfs -G -M
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| 73 |
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| 74 | If you want to run make manually you can only do so if you are 'root' or
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| 75 | via 'sudo'
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| 76 | i.e (from within the jhalfs directory) sudo make
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| 77 |
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| 78 | The term <symlink> refers to the 1 of 3 package symlinks, lfs,hlfs,clfs.
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| 79 | Replace <symlink> with your choice of packages; i.e.: ./lfs
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| 80 |
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| 81 | ./<symlink> eg: ./lfs or ./hlfs
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| 82 | Create a makefile based on the settings found in the config files.
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| 83 | You must enter the build partition/jhalfs directory and manually run <make>
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| 84 |
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| 85 | ./<symlink> -G eg: ./lfs -G
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| 86 | Download the packages and patches necessary to build <symlink>
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| 87 |
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| 88 | ./<symlink> -G -M eg: ./lfs -G -M
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| 89 | Download the packages, create and automatically run the Makefile
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| 90 |
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| 91 | ./<symlink> --help eg: ./lfs --help
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| 92 | will give you a context sensitive list of command line switches.
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| 93 |
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| 94 | >>>> an expanded example
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| 95 |
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| 96 | export SRC_ARCHIVE=/mnt/SourceFiles
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| 97 |
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| 98 | ./lfs -D /mnt/partition4 \
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| 99 | -K ~/jhalfs_configs/linux-2.6.16.19-LFS.config \
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| 100 | -F ~/jhalfs-configs/fstab-sda3 \
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| 101 | -G -T 0 -M
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| 102 |
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| 103 | explanation:::
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| 104 |
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| 105 | export SRC_ARCHIVE=/mnt/SourceFiles
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| 106 | # This points to a local archive of existing packages. If the version in
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| 107 | the archive is incorrect jhalfs will access the net and download the
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| 108 | necessary version and store it here for later use. DO NOT set this to
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| 109 | $BUILDDIR/sources. If you do not set this variable to a valid directory
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| 110 | ALL package tarballs will be downloaded from the 'net.
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| 111 |
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| 112 | -D /mnt/partition4
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| 113 | # where everything takes place. ..NOTE it must already exist and be mounted
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| 114 |
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| 115 | -K ~/jhalfs_configs/linux-2.6.16.19-LFS.config
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| 116 | # If you want to automatically build a the kernel you MUST supply a valid
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| 117 | kernel configuration file. The file you supply will be copied and renamed.
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| 118 |
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| 119 | -F ~/jhalfs-configs/fstab-sda3
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| 120 | # If you have a fstab file you wish to use it will be copied and renamed
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| 121 |
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| 122 | -G # Retrieve the package files. You MUST enable this flag at least once if you
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| 123 | wish to do a build or whenever you update the book.
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| 124 |
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| 125 | -T 0 # don't run any testsuites
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| 126 |
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| 127 | -M # automatically run make against Makefile once jhalfs finishes its work.
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| 128 |
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| 129 |
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| 130 | 6. LAYOUT::
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| 131 |
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| 132 | /CLFS/config
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| 133 | /master.sh
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| 134 | /xxxx.xsl
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| 135 |
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| 136 | /CLFS2/config
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| 137 | /master.sh
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| 138 | /xxxx.xsl
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| 139 |
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| 140 | /HLFS/config
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| 141 | /master.sh
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| 142 | /xxxx.xsl
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| 143 |
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| 144 | /LFS/config
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| 145 | / master.sh
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| 146 | /xxxx.xsl
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| 147 |
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| 148 | /common/config
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| 149 | /common_functions
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| 150 | /makefile_functions
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| 151 | /func_check_versions.sh
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| 152 | /func_validate_configs.sh
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| 153 |
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| 154 | /contrib/jhalfs-paco.patch
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| 155 |
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| 156 | /extras/do_copy_files
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| 157 | /do_ica_prep
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| 158 | /do_ica_work
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| 159 | /farce
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| 160 | /filelist
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| 161 |
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| 162 | README
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| 163 | README.PACO
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| 164 | TODO
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| 165 |
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| 166 | ./clfs ---|
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| 167 | ./clfs2 ---|
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| 168 | ./hlfs ---|+---> master.sh
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| 169 | ./lfs ---|
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| 170 |
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| 171 |
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| 172 | 7. FAQ::
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| 173 | Q. "This 'help' file is very sparse"
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| 174 | A. Yes, it is. This tool, jhalfs, is for those who understand the LFS books
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| 175 | and wish to automate the build. 99% of any problems that arise can be
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| 176 | solved by reading the book(s).
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| 177 |
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| 178 | Q. "It doesn't work!"
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| 179 | A. Yes it does, try ./lfs --help
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| 180 | Remember you must either be 'root' to run this script or have 'sudo' privileges.
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| 181 |
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| 182 | Q. "It still doesn't work"
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| 183 | A. jhalfs was designed to work against the developement versions of the LFS
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| 184 | series of books. Consequently changes in a book(s) sometimes breaks older
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| 185 | versions of jhalfs. Before you start pulling out your hair download the
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| 186 | latest version of jhalfs to see if that solves your problem.
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| 187 |
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| 188 | Q. "How do I specify the build location?"
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| 189 | A. The original LFS document worked against the well known location /mnt/lfs.
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| 190 | This script automates the build of all of the LFS series of books and uses
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| 191 | a generic location $BUILDDIR with a default value of /mnt/build_dir.
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| 192 | You may change this value to suit your needs.
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| 193 |
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| 194 | The layout below $BUILDDIR is as follows.
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| 195 | $BUILDDIR/
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| 196 | jhalfs (makefile,cmd scripts,logs..etc)
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| 197 | sources (where packages reside)
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| 198 | tools (temporary bootstrap system)
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| 199 | cross-tools (temporary CLFS only)
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| 200 | ...
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| 201 | FHS dir structure
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| 202 | ...
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| 203 |
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| 204 | Q. "What is the function of the SRC_ARCHIVE variable?"
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| 205 | A. When then symlinked master.sh runs it creates a local copy of the
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| 206 | necessary packages in BUILDDIR/sources by downloading the files. If
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| 207 | the variable SRC_ARCHIVE is defined the software will first look in
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| 208 | this location for the file and, if found, will copy it to BUILDDIR/sources.
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| 209 | If the files are not found in SRC_ARCHIVE _and_ you have write priv to
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| 210 | the directory any downloaded files will be mirrored there.
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| 211 |
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| 212 | Q. "How do I set the SRC_ARCHIVE location?"
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| 213 | A. The best way to set the value of SRC_ARCHIVE is
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| 214 | export SRC_ARCHIVE=/wherever/you/store/downloaded/packages
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| 215 | OR
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| 216 | you can change the setting in common/config.
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| 217 |
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| 218 | Q. "Why have 2 copies of the files?"
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| 219 | A. The package files must be visible during the chroot phase and this is a
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| 220 | simple and reliable method of doing so. This method also handles the CLFS
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| 221 | build method where the final build may be done on a separate machine.
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| 222 |
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| 223 | Q. "What is the function of LUSER and LGROUP? There is no cmd line switch"
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| 224 | A. If you are running jhalfs from a low or non-priveledged account you may not
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| 225 | have the priv to create/delete accounts. These variables are adjustable
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| 226 | when invoking make.
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| 227 | make LUSER=myaccount LGROUP=mygroup
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| 228 | Then only changes to your account will be the creation of a NEW .bashrc after
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| 229 | saving your original to .bashrc.XXX
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| 230 |
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| 231 | Q. "When I try to build 'xxx' with clfs the makefile fails at the mid-point"
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| 232 | A. There could be numerous reasons for the failure but the most likely reason
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| 233 | is you are doing a cross-build using the 'chroot' method and the target is
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| 234 | not compatible with the host. If you choose to build using the chroot
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| 235 | method a test is performed at the end of the temptools phase. If the test
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| 236 | succeeds the build continues inside a chroot jail. However if the test fails
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| 237 | it means the host and target are not compatible an you should use the
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| 238 | 'boot' method to create your target code.
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| 239 | As an extreme example: You can build a sparc target on a x86 platform but
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| 240 | only the temptools phase. You must run ./clfs using the 'boot' method and
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| 241 | not the 'chroot.' You must transfer the toolchain to a sparc platform, reboot
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| 242 | the sparc box and continue the build.
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| 243 | Of all the LFS series of books Cross-LFS requires the greatest
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| 244 | understanding of host/target hardware combination. Please read the book
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| 245 | carefully and don't skip the easy parts (there are none..)
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| 246 |
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| 247 | Authors:
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| 248 | George Boudreau
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| 249 | Manuel Canales Esparcia
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| 250 | Jeremy Huntwork
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