source: trunk/debathena/debathena/config-package-dev/divert.mk @ 24906

Revision 24906, 5.3 KB checked in by andersk, 14 years ago (diff)
In config-package-dev: * Fix a quoting bug that failed to disallow transformation of generated conffiles. (Patch from Evan Broder.) * Remove DEB_UNDIVERT_VERSION_file and DEB_UNREMOVE_VERSION_file, and instead test for the undiverted file in the postinst. (Patch from Evan Broder.)
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1# -*- mode: makefile; coding: utf-8 -*-
2# Copyright © 2007-2008 Anders Kaseorg <andersk@mit.edu> and
3#                       Tim Abbott <tabbott@mit.edu>
4#
5# This program is free software; you can redistribute it and/or
6# modify it under the terms of the GNU General Public License as
7# published by the Free Software Foundation; either version 2, or (at
8# your option) any later version.
9#
10# This program is distributed in the hope that it will be useful, but
11# WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13# General Public License for more details.
14#
15# You should have received a copy of the GNU General Public License
16# along with this program; if not, write to the Free Software
17# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18# 02111-1307 USA.
19
20# Don't include divert.mk in your rules files directly; instead use
21# config-package.mk.
22
23# divert.mk handles the low-level diversion logic.  It includes
24# divert.sh.in in the postinst and prerm scripts, and adds
25
26ifndef _cdbs_rules_divert
27_cdbs_rules_divert = 1
28
29include /usr/share/cdbs/1/rules/debhelper.mk
30
31CDBS_BUILD_DEPENDS := $(CDBS_BUILD_DEPENDS), config-package-dev (>= 4.5~)
32
33# divert.sh.in is included in the postinst/prerm scripts of packages
34# installing diversions using config-package-dev.
35DEB_DIVERT_SCRIPT = /usr/share/config-package-dev/divert.sh.in
36# script used to encode the path of a file uniquely in a valid virtual
37# package name.
38DEB_DIVERT_ENCODER = /usr/share/config-package-dev/encode
39
40DEB_DIVERT_PACKAGES += $(foreach package,$(DEB_ALL_PACKAGES), \
41    $(if $(DEB_TRANSFORM_FILES_$(package)),$(package), \
42    $(if $(DEB_REMOVE_FILES_$(package)),$(package), \
43    $(if $(DEB_UNREMOVE_FILES_$(package)),$(package), \
44    $(if $(DEB_UNDIVERT_FILES_$(package)),$(package), \
45    $(if $(DEB_DIVERT_FILES_$(package)),$(package)))))))
46
47ifeq ($(DEB_DIVERT_EXTENSION),)
48DEB_DIVERT_EXTENSION = .divert
49endif
50
51# Replace only the last instance of DEB_DIVERT_EXTENSION in the
52# filename, to make it possible to divert /path/foo.divert to
53# foo.divert.divert-orig
54divert_files_replace_name = $(shell echo $(1) | perl -pe 's/(.*)\Q$(DEB_DIVERT_EXTENSION)\E/$$1$(2)/')
55
56# Transform a full path into the path it should be diverted to if it's
57# removed
58remove_files_name = /usr/share/$(cdbs_curpkg)/$(shell $(DEB_DIVERT_ENCODER) $(1))
59
60debian-divert/%: package = $(subst debian-divert/,,$@)
61debian-divert/%: divert_files = $(DEB_DIVERT_FILES_$(package)) $(DEB_TRANSFORM_FILES_$(package))
62debian-divert/%: divert_remove_files = $(DEB_REMOVE_FILES_$(package))
63debian-divert/%: divert_undivert_files = $(DEB_UNDIVERT_FILES_$(package))
64debian-divert/%: divert_unremove_files = $(DEB_UNREMOVE_FILES_$(package))
65debian-divert/%: divert_files_all = $(strip $(divert_files) $(divert_remove_files) $(divert_undivert_files) $(divert_unremove_files))
66debian-divert/%: divert_files_thispkg = $(strip $(divert_files) $(divert_remove_files))
67$(patsubst %,debian-divert/%,$(DEB_DIVERT_PACKAGES)) :: debian-divert/%:
68#   Writing shell scripts in makefiles sucks.  Remember to $$ shell
69#   variables and include \ at the end of each line.
70# Add code to postinst to add/remove diversions as appropriate
71        set -e; \
72        { \
73            sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \
74            $(if $(divert_files_all), \
75                echo 'if [ "$$1" = "configure" ]; then'; \
76                $(foreach file,$(divert_undivert_files), \
77                    echo "    check_undivert_unlink $(call divert_files_replace_name,$(file), )"; )\
78                $(foreach file,$(divert_unremove_files), \
79                    echo "    check_undivert_unremove $(file) $(call remove_files_name,$(file))"; )\
80                $(foreach file,$(divert_files), \
81                    echo "    divert_link $(call divert_files_replace_name,$(file), )";) \
82                $(foreach file,$(divert_remove_files), \
83                    mkdir -p debian/$(cdbs_curpkg)/usr/share/$(cdbs_curpkg); \
84                    echo "    divert_remove $(file) $(call remove_files_name,$(file))";) \
85                echo 'fi'; \
86            ) \
87        } >> $(CURDIR)/debian/$(cdbs_curpkg).postinst.debhelper
88# Add code to prerm script to undo diversions when package is removed.
89        set -e; \
90        { \
91            sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \
92            $(if $(divert_files_thispkg), \
93                echo 'if [ "$$1" = "remove" ]; then'; \
94                $(foreach file,$(divert_files), \
95                    echo "    undivert_unlink $(call divert_files_replace_name,$(file), )";) \
96                $(foreach file,$(divert_remove_files), \
97                    echo "    undivert_unremove $(file) $(cdbs_curpkg)";) \
98                echo 'fi'; \
99            ) \
100        } >> $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper
101# Add an encoding of the names of the diverted files to the Provides:
102# and Conflicts: lists.  This prevents two packages diverting the same
103# file from being installed simultaneously (it cannot work, and this
104# produces a much less ugly error).  Requires in debian/control:
105#   Provides: $(diverted-files)
106#   Conflicts: $(diverted-files)
107        set -e; \
108        { \
109            echo -n "diverted-files="; \
110            $(foreach file,$(divert_files_thispkg),\
111                echo -n "diverts-"; \
112                ${DEB_DIVERT_ENCODER} "$(call divert_files_replace_name,$(file))"; \
113                echo -n ", ";) \
114            echo; \
115        } >> $(CURDIR)/debian/$(cdbs_curpkg).substvars
116
117$(patsubst %,binary-post-install/%,$(DEB_DIVERT_PACKAGES)) :: binary-post-install/%: debian-divert/%
118
119endif
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