source: README@ c2b6002

2.3 2.3.x 2.4 ablfs ablfs-more legacy new_features trunk
Last change on this file since c2b6002 was c2b6002, checked in by Manuel Canales Esparcia <manuel@…>, 18 years ago

Added tes about blfs-tool support.

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31. INTRODUCTION::
4
5 This collection of scripts, known as jhalfs, strives to create
6 accurate makefiles from the Linux From Scratch book series XML files.
7 This software is an evolution of the original "jhalfs-0.2" code developed
8 by Jeremy Huntwork.
9
10 The usage of this script assumes you have read and are familiar with
11 the book(s) and, therefore, the configuration variables found in menuconfig
12 interface will have meaning to you.
13
14 The list of supported books can be found at
15 http://wiki.linuxfromscratch.org/alfs/wiki/SupportedBooks
16
17 NOTES::
18 *. The resulting Makefile takes considerable time to run to completion.
19 Lay in a supply of caffeine beverages.
20
21 *. It is recommended that you temporarily unpack your linux kernel,
22 run <make menuconfig>, configure the kernel as per the book and save
23 the resulting .config file. This suggestion also applies to the
24 configuration of the uClibc package when building a HLFS system using
25 uClibc rather than glibc.
26
272. PREREQUISITES::
28
29 To use this tool you MUST:
30
31 - have experience building {c,h,b}LFS packages
32 - know how to edit and write shell scripts
33 - know how a Makefile works
34 - be able to trace build failures and to find what is causing it
35 (user error, package bug, {c,h,b}LFS command bug, or jhalfs code bug)
36
37 If you do not have the above skills, please don't use this tool.
38
39
403. INSTALLATION::
41
42 No installation is required. System-wide installation is not allowed.
43
444. CONFIGURATION::
45
46 ::NEWS::
47 There is a new configuration method for jhalfs.
48
49 We have installed the familiar menu based configuration tool driven by
50 GNU make. see the section RUNNING, for details
51
525. RUNNING::
53
54 ::NEWS::
55 jhalfs is now launched via GNU make instead of individual symlinks.
56
57 The command <make> will launch a menu based configuration program. You will
58 recognize the layout from building the kernel or uClibc/BusyBox. The
59 underlying menu code was borrowed from BusyBox and slightly modified for
60 our use.
61
62 Help on parameter function is available from the online help. Please
63 make use of that feature for additional information not in this file.
64
65 Once you have set the parameters you wish and have saved your work the
66 jhalfs script is launch. The script verify first that the host can run
67 it and build the xLFS system, then validate the configuration and present
68 you with your selections which you may accept or reject.
69
70 If you accepted the displayed settings jhalfs will proceed to create the
71 Makefile, optionally download packages.
72
73 ::NEWS::
74 You must be logged as a normal user with sudo privileges to run
75 the Makefile.
76
77 NOTE::
78 If you run the jhalfs script directly the only function you can select
79 is to display the version number running <./jhalfs -v>
80
816. BLFS_TOOL SUPPORT::
82
83 For books that support it, there is an option to install blfs-tool and its
84 dependendencies on the final system.
85
86 After booting the new xLFS system some steps are needed to finish
87 blfs-tool installation:
88
89 - A user account need be created. You will must be logged on that user
90 account to use blfs-tool.
91
92 - Move /blfs-root to that user's home, making he the directory and
93 files owner.
94
95 - Bring to that user read and write privileges over the $TRACKING_DIR
96 directory and the files that it contains.
97
98 - Configure sudo to bring to that user the needed privileges.
99
100 We assume that blfs-tool will be used on a running fresh xLFS system.
101 To use it to build BLFS packages from the chroot jail is also possible,
102 but is for you to figure out how to do that.
103
104 To know how to blfs-tool works, see README.BLFS.
105
1067. LAYOUT::
107
108 /BLFS (see README.BLFS)
109
110 /CLFS/master.sh
111 /clfs.xsl
112
113 /CLFS2/master.sh
114 /clfs2.xsl
115
116 /HLFS/master.sh
117 /hlfs.xsl
118
119 /LFS/master.sh
120 /lfs.xsl
121
122 /common/common_functions
123 /makefile_functions
124 /func_check_versions.sh
125 /func_validate_configs.sh
126 /packages.xsl
127 /urls.xsl
128 /create-sbu_du-report.sh
129 /func_compare.sh
130 /progress_bar.sh
131 /blfs-tool-deps/9xx-*
132
133 /contrib/jhalfs-paco.patch
134
135 /extras/do_copy_files
136 /do_ica_prep
137 /do_ica_work
138 /farce
139 /filelist
140
141 /optimize/opt_config
142 /opt_override
143 /optimize_functions
144 /opt_config.d/noOpt
145 /noSymbols
146 /O3pipe
147 /O3pipe_march
148 /defOpt_fPIC
149
150 /menu/*
151
152 README
153 README.BLFS
154 README.HLFS
155 README.PACO
156 TODO
157 LICENSE
158
159 Config.in
160 Makefile
161 jhalfs
162 blfs-tool
163
1648. FAQ::
165 Q. "This 'help' file is very sparse"
166 A. Yes, it is. This tool, jhalfs, is for those who understand the LFS books
167 and wish to automate the build. 99% of any problems that arise can be
168 solved by reading the book(s).
169
170 Q. "It doesn't work!"
171 A. Yes it does, try >> make
172 Remember you must have 'sudo' privileges.
173
174 Q. "It still doesn't work"
175 A. jhalfs was designed to work against the development versions of the LFS
176 series of books. Consequently changes in a book(s) sometimes breaks older
177 versions of jhalfs. Before you start pulling out your hair download the
178 latest version of jhalfs to see if that solves your problem.
179
180 Q. "How do I specify the build location?"
181 A. The original LFS document worked against the well known location /mnt/lfs.
182 This script automates the build of all of the LFS series of books and uses
183 a generic location $BUILDDIR with a default value of /mnt/build_dir.
184 You may change this value to suit your needs.
185
186 The layout below $BUILDDIR is as follows.
187 $BUILDDIR/
188 jhalfs (Makefile, cmd scripts, logs, etc..)
189 sources (where packages reside)
190 tools (temporary bootstrap system)
191 cross-tools (temporary CLFS only)
192 ...
193 FHS dir structure
194 ...
195 blfs_root (files to use blfs-tool if selected to install it)
196
197 Q. "What is the function of the SRC_ARCHIVE variable?"
198 A. When jhalfs runs and packages download was selected, it creates a local
199 copy of the necessary packages in BUILDDIR/sources by downloading the
200 files. If the variable SRC_ARCHIVE is defined the software will first
201 look in this location for the file and, if found, will copy it to
202 BUILDDIR/sources.
203 If the files are not found in SRC_ARCHIVE _and_ you have write priv to
204 the directory any downloaded files will be mirrored there.
205
206 Q. "How do I set the SRC_ARCHIVE location?"
207 A. The best way to set the value of SRC_ARCHIVE is
208
209 export SRC_ARCHIVE=/wherever/you/store/downloaded/packages
210
211 or you can set the full path in the proper menu entry.
212
213 Q. "Why have 2 copies of the files?"
214 A. The package files must be visible during the chroot phase and this is a
215 simple and reliable method of doing so. This method also handles the CLFS
216 boot build method where the final build may be done on a separate machine.
217
218 Q. "What is the function of "User account" and "Group account" menu settings?"
219 A. If you are running jhalfs from a low or non-privileged account you may not
220 have the priv to create/delete the user needed to build temporally tools.
221 These settings allow you to use your own user and group name to do that
222 build steps.
223
224 These variables are adjustable also when invoking make:
225
226 $BUILDDIR make LUSER=myaccount LGROUP=mygroup
227
228 The only changes to your account will be the creation of a NEW .bashrc
229 after saving your original to .bashrc.XXX
230
231 Q. "When I try to build CLFS the Makefile fails at the mid-point"
232 A. There could be numerous reasons for the failure but the most likely reason
233 is you are doing a cross-build using the 'chroot' method and the target is
234 not compatible with the host. If you choose to build using the chroot
235 method a test is performed at the end of the temptools phase. If the test
236 succeeds the build continues inside a chroot jail. However if the test fails
237 it means the host and target are not compatible an you should use the
238 'boot' method to create your target code.
239 As an extreme example: You can build a sparc target on a x86 platform but
240 only the temptools phase. You must select the 'boot' method and not the
241 'chroot.' You must transfer the toolchain to a sparc platform, reboot the
242 sparc box and continue the build.
243 Of all the LFS series of books Cross-LFS requires the greatest
244 understanding of host/target hardware combination. Please read the book
245 carefully and don't skip the easy parts (there are none..)
246
247Authors:
248 George Boudreau
249 Manuel Canales Esparcia
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