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dpatch.make

man page of dpatch.make

dpatch.make: simplistic wrapper around dpatch(1) for make(1).

NAME

dpatch.make - simplistic wrapper around dpatch(1) for make(1).
SYNOPSIS
include /usr/share/dpatch/dpatch.make
DESCRIPTION
For backwards compatibility and ease of use, dpatch.make is provided along with dpatch(1). Its purpose is to implement generic patch and unpatch rules that can be reused in debian/rules scripts.

USAGE

Using dpatch.make is rather straightforward: one has to include the file in debian/rules, change the appropriate targets to depend on patch and unpatch, and that is all it takes. Figuring out what the appropriate target is, requires some thought. Generally, one has a build target, or config.status, or configure (or any of these with a -stamp suffix). Most of the time these are called first during the build, so one of these (the one that exists, and is not depended upon by another one) has to be modified to depend on the patch target in dpatch.make. Doing the same for the clean target is easier. One only has to rename the old rule to, say, clean-patched, then make a new one that has clean-patched and unpatch in its list of prerequisites.

CUSTOMISATION

There are a few variables which are used by dpatch.make, which can be set before including it, in order to change the systems behaviour a little. These variables are: DEB_SOURCE_PACKAGE This is the name of the source package, used when creating the stamp file. By default, it is empty. DPATCH_STAMPDIR This is the directory where stamp files will be put. Default is debian/patched. DPATCH_STAMPFN The name of the stamp file, which contains the patch descriptions and other possible meta-data. Default value is patch-stamp. DPATCH_WORKDIR The target directory to apply patches to. By default, it is the current directory. PATCHLIST The list of patches to apply. This is an alternative to debian/patches/00list - that is, if this variable is not empty, the contents of 00list will be ignored, and this variable will be used instead.

EXAMPLE

include /usr/share/dpatch/dpatch.make build: build-stamp build-stamp: patch-stamp ${MAKE} touch build-stamp clean: clean1 unpatch clean1: ${MAKE} clean rm -rf debian/files debian/substvars debian/imaginary-package .PHONY: patch unpatch ... . . .

SIDE EFFECTS

Using dpatch.make instead of calling dpatch directly has one side effect: it will create a file called patch-stamp containing some meta-information extracted from the scriptlets. Depending on a phony patch target directly from build target may cause build target to be reevaluated even when there is no change to be done. Instead, try making build-stamp depend on patch-stamp as specified in this example.
AUTHOR
Originally by Gergely Nagy. Modified by Junichi Uekawa.
SEE ALSO
dpatch(1), dpatch(7), dpatch-edit-patch(1), dpatch-list-patch(1), dpatch-get-origtargz(1), dpatch-convert-diffgz(1) DPATCH.MAKE(7)
 
 
 

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