0496a6a842
In the Buildroot manual, it is specified that the Waf-based infrastructure supports the <pkg>_SUBDIR variable, which was not true. This patch: * makes use of this variable by changing to the given sub-directory before executing waf commands, * documents the usage of <pkg>_SUBDIR in the waf-specific section of the manual. Signed-off-by: Lionel Orry <lionel.orry@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
92 lines
3.2 KiB
Plaintext
92 lines
3.2 KiB
Plaintext
// -*- mode:doc; -*-
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// vim: set syntax=asciidoc:
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=== Infrastructure for Waf-based packages
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[[waf-package-tutorial]]
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==== +waf-package+ tutorial
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First, let's see how to write a +.mk+ file for a Waf-based package, with
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an example :
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------------------------
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01: ################################################################################
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02: #
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03: # libfoo
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04: #
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05: ################################################################################
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06:
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07: LIBFOO_VERSION = 1.0
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08: LIBFOO_SOURCE = libfoo-$(LIBFOO_VERSION).tar.gz
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09: LIBFOO_SITE = http://www.foosoftware.org/download
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10: LIBFOO_CONF_OPTS = --enable-bar --disable-baz
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11: LIBFOO_DEPENDENCIES = bar
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12:
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13: $(eval $(waf-package))
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------------------------
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On line 7, we declare the version of the package.
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On line 8 and 9, we declare the name of the tarball (xz-ed tarball
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recommended) and the location of the tarball on the Web. Buildroot
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will automatically download the tarball from this location.
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On line 10, we tell Buildroot what options to enable for libfoo.
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On line 11, we tell Buildroot the depednencies of libfoo.
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Finally, on line line 13, we invoke the +waf-package+
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macro that generates all the Makefile rules that actually allows the
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package to be built.
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[[waf-package-reference]]
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==== +waf-package+ reference
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The main macro of the Waf package infrastructure is +waf-package+.
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It is similar to the +generic-package+ macro.
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Just like the generic infrastructure, the Waf infrastructure works
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by defining a number of variables before calling the +waf-package+
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macro.
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First, all the package metadata information variables that exist in
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the generic infrastructure also exist in the Waf infrastructure:
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+LIBFOO_VERSION+, +LIBFOO_SOURCE+, +LIBFOO_PATCH+, +LIBFOO_SITE+,
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+LIBFOO_SUBDIR+, +LIBFOO_DEPENDENCIES+, +LIBFOO_INSTALL_STAGING+,
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+LIBFOO_INSTALL_TARGET+.
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An additional variable, specific to the Waf infrastructure, can
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also be defined.
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* +LIBFOO_SUBDIR+ may contain the name of a subdirectory inside the
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package that contains the main wscript file. This is useful,
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if for example, the main wscript file is not at the root of
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the tree extracted by the tarball. If +HOST_LIBFOO_SUBDIR+ is not
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specified, it defaults to +LIBFOO_SUBDIR+.
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* +LIBFOO_NEEDS_EXTERNAL_WAF+ can be set to +YES+ or +NO+ to tell
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Buildroot to use the bundled +waf+ executable. If set to +NO+, the
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default, then Buildroot will use the waf executable provided in the
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package source tree; if set to +YES+, then Buildroot will download,
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install waf as a host tool and use it to build the package.
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* +LIBFOO_WAF_OPTS+, to specify additional options to pass to the
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+waf+ script at every step of the package build process: configure,
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build and installation. By default, empty.
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* +LIBFOO_CONF_OPTS+, to specify additional options to pass to the
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+waf+ script for the configuration step. By default, empty.
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* +LIBFOO_BUILD_OPTS+, to specify additional options to pass to the
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+waf+ script during the build step. By default, empty.
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* +LIBFOO_INSTALL_STAGING_OPTS+, to specify additional options to pass
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to the +waf+ script during the staging installation step. By default,
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empty.
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* +LIBFOO_INSTALL_TARGET_OPTS+, to specify additional options to pass
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to the +waf+ script during the target installation step. By default,
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empty.
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