olpc-os-builder [PATCH] add a Quick Start to README and reformat

James Cameron quozl at laptop.org
Mon Jan 4 21:50:23 EST 2010


Tested olpc-os-builder on Fedora 11, and documented the steps required
to produce a build in a Quick Start section of the README.

Reformatted the previous text.
---
 doc/README |  210 +++++++++++++++++++++++++++++++++++++++---------------------
 1 files changed, 136 insertions(+), 74 deletions(-)

diff --git a/doc/README b/doc/README
index 1455908..7a42f09 100644
--- a/doc/README
+++ b/doc/README
@@ -1,32 +1,64 @@
-olpc-os-builder is an application to generate OS images for XO laptops.
-It is the successor to pilgrim and fedora-xo which were used to generate prior
-OLPC OS releases.
+olpc-os-builder is an application to generate OS images for XO
+laptops.  It is the successor to pilgrim and fedora-xo which were used
+to generate prior OLPC OS releases.
+
+
+Quick Start:
+
+    1.  install Fedora 11,
+
+    2.  install the build dependencies:
+
+        yum install zlib-devel libtomcrypt-devel glibc-headers
+
+    3.  build the package:
+
+        make install
+
+    4.  install the run-time dependencies:
 
-The build is made based from a build configuration, which selects a series
-of modules which were installed by olpc-image-builder. These modules (and
-the configuration you provide) control the outcome of the build process.
+        yum install python-imgcreate bitfrost
+
+    5.  produce a build:
+
+        olpc-os-builder examples/f11-xo1.5.ini
+
+    6.  view or use the build result files:
+
+        ls -l /var/tmp/olpc-os-builder
+
+
+Description:
+
+The build is made based from a build configuration, which selects a
+series of modules which were installed by olpc-image-builder.  These
+modules (and the configuration you provide) control the outcome of the
+build process.
 
 olpc-os-builder lets you build your own OLPC OS builds, with your own
-customizations. In fact, one of the design goals is to make it easier for
-OLPC deployments to make their own customizations. In this case, the general
-usage model is to take one of the example configurations which corresponds
-to the OLPC OS that you want to ship, and then make a handful of modifications
-according to your local requirements. These example configurations exactly
-match the build configurations that OLPC used to make the published OS release.
-
-When using olpc-os-builder in this fashion, you should take care to match
-your runtime environment with the one that OLPC used when the base OS image
-was originally released. For example, if OLPC OS release 10.2.0 was built with
-olpc-os-builder-1.0.3 on Fedora 11, and you want to modify this particular
-release but you are using olpc-os-builder-1.2.0 on Fedora 12 then the output
-images may differ significantly from the official OLPC OS release 10.2.0,
-which is probably not what you want.
-
-The example build configurations encode the version of olpc-os-builder which
-was used by OLPC at the time that each build was made. With this information,
-olpc-os-builder will warn you at the start of a build when you attempt to
-build such an image on a configuration that differs from the environment where
-the corresponding official OLPC OS release was made.
+customizations.  In fact, one of the design goals is to make it easier
+for OLPC deployments to make their own customizations.  In this case,
+the general usage model is to take one of the example configurations
+which corresponds to the OLPC OS that you want to ship, and then make
+a handful of modifications according to your local requirements.
+These example configurations exactly match the build configurations
+that OLPC used to make the published OS release.
+
+When using olpc-os-builder in this fashion, you should take care to
+match your runtime environment with the one that OLPC used when the
+base OS image was originally released.  For example, if OLPC OS
+release 10.2.0 was built with olpc-os-builder-1.0.3 on Fedora 11, and
+you want to modify this particular release but you are using
+olpc-os-builder-1.2.0 on Fedora 12 then the output images may differ
+significantly from the official OLPC OS release 10.2.0, which is
+probably not what you want.
+
+The example build configurations encode the version of olpc-os-builder
+which was used by OLPC at the time that each build was made.  With
+this information, olpc-os-builder will warn you at the start of a
+build when you attempt to build such an image on a configuration that
+differs from the environment where the corresponding official OLPC OS
+release was made.
 
 
 Usage:
@@ -39,15 +71,17 @@ Various build configurations can be found in the examples directory
 included with the distribution, including configurations used to build
 OLPC OS releases.
 
-Build configuration files have a series of sections, each section title is
-enclosed in square brackets. Inside each section, there are options.
-For example, "mysection" below has one option, named "option1" with value
-"myvalue":
+Build configuration files have a series of sections, each section
+title is enclosed in square brackets.  Inside each section, there are
+options.  For example, "mysection" below has one option, named
+"option1" with value "myvalue":
+
 	[mysection]
 	option1=myvalue
 
-Options can reside on multiple lines, provided that all lines beyond the first
-one are indented, e.g.:
+Options can reside on multiple lines, provided that all lines beyond
+the first one are indented, e.g.:
+
 	[mysection]
 	option1=this is
 		an option
@@ -55,65 +89,94 @@ one are indented, e.g.:
 		but lines 2 through 4 must be indented
 	option2=foo
 
-In general, each section that can exist in the configuration file corresponds
-to a specific module. The section name is the same as the module name.
-The options that can exist in these sections are documented in the individual
-module documentation files.
+In general, each section that can exist in the configuration file
+corresponds to a specific module.  The section name is the same as the
+module name.  The options that can exist in these sections are
+documented in the individual module documentation files.
 
-There is one exception: the [global] section does not belong to any module.
-So we'll document it here, according to each possible setting:
+There is one exception: the [global] section does not belong to any
+module.  So we'll document it here, according to each possible
+setting:
 
-fedora_release			The numeric release number of the Fedora operating
-						system to base the OLPC OS build on. e.g. 11 for
-						Fedora 11
+fedora_release
 
-olpc_version_major		The major version component of the OLPC version tag
-						to include in the OS image. For example, in the OLPC
-						OS 10.1.0 release, this would be 10
+    The numeric release number of the Fedora operating system to base
+    the OLPC OS build on.  For example, 11 for Fedora 11.
 
-olpc_version_minor		The minor version component of the OLPC version tag
-						to include in the OS image. For example, in the OLPC
-						OS 10.1.0 release, this would be 1
+olpc_version_major
 
-olpc_version_release	The release version component of the OLPC version tag
-						to include in the OS image. For example, in the OLPC
-						OS 10.1.0 release, this would be 0
+    The major version component of the OLPC version tag to include in
+    the OS image.  For example, in the OLPC OS 10.1.0 release, this
+    would be 10.
 
-customization_info		Please set this to a string that indicates your
-						identity, to make clear that the resultant build is a
-						modified version of OLPC's official release.
-						For example, you could use something like
-						"customized for Paraguay" when producing an OS build
-						for OLPC's Paraguayan deployment.
+olpc_version_minor
 
-target_platform			A textual description of the target platform for the
-						build, e.g. XO-1.5
+    The minor version component of the OLPC version tag to include in
+    the OS image.  For example, in the OLPC OS 10.1.0 release, this
+    would be 1.
 
-langs					A set of languages to support in the resultant OS image.
+olpc_version_release
 
-modules					The selection of modules to include in the build.
+    The release version component of the OLPC version tag to include
+    in the OS image.  For example, in the OLPC OS 10.1.0 release, this
+    would be 0.
 
+customization_info
 
-In general, options need to be set with care. Aim to stick with the values
-shown in the examples where possible. For example, if you were to exclude
-the "base" module from the build then you will get strange results. Also, you
-cannot arbitrarily change fedora_release without adapting all of the module
-code to work with the ever-changing components of each official Fedora release.
+    Please set this to a string that indicates your identity, to make
+    clear that the resultant build is a modified version of OLPC's
+    official release.  For example, you could use something like
+    "customized for Paraguay" when producing an OS build for OLPC's
+    Paraguayan deployment.
 
+target_platform
+
+    A textual description of the target platform for the build, for
+    example XO-1.5.
+
+langs
+
+    A set of languages to support in the resultant OS image.
+
+modules
+
+    The selection of modules to include in the build.
+
+
+In general, options need to be set with care.  Aim to stick with the
+values shown in the examples where possible.  For example, if you were
+to exclude the "base" module from the build then you will get strange
+results.  Also, you cannot arbitrarily change fedora_release without
+adapting all of the module code to work with the ever-changing
+components of each official Fedora release.
 
 
 Design goals:
- - revolve around Fedora's image-creator infrastructure, meaning that we use a
-   lot of Fedora's official build infrastructure
+
+ - revolve around Fedora's image-creator infrastructure, meaning that
+   we use a lot of Fedora's official build infrastructure
+
  - allow XO-1 and XO-1.5 builds from the codebase
+
  - limit all configuration to a single INI-style text file
- - through the configuration file, allow common deployment modifications to be
-   made without too much technical know-how
+
+ - through the configuration file, allow common deployment
+   modifications to be made without too much technical know-how
+
  - copy elements of dracut's modular design to achieve the above
- - eliminate the need for image-builder, which had the undesirable effect of
-   replicating some of the build infrastructure in 2 places
- - avoid any 'difficult' system requirements so that this can be packaged
-   into official Fedora and hence easily installed and used by deployments
+
+ - eliminate the need for image-builder, which had the undesirable
+   effect of replicating some of the build infrastructure in 2 places
+
+ - avoid any 'difficult' system requirements so that this can be
+   packaged into official Fedora and hence easily installed and used
+   by deployments
+
+
+Fedora 11 Dependencies:
+
+	Build-Requires: zlib-devel libtomcrypt-devel glibc-headers
+	Requires: python-imgcreate bitfrost
 
 
 Development:
@@ -123,4 +186,3 @@ Development:
 Contact:
 	devel at lists.laptop.org
 	http://lists.laptop.org/listinfo/devel
-
-- 
1.6.5

-- 
James Cameron
http://quozl.linux.org.au/


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