1 # -*- mode: makefile; coding: utf-8 -*-
2 # Copyright © 2007-2008 Anders Kaseorg <andersk@mit.edu> and
3 # Tim Abbott <tabbott@mit.edu>
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.
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.
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
20 # Don't include divert.mk in your rules files directly; instead use
23 # divert.mk handles the low-level diversion logic. It includes
24 # divert.sh.in in the postinst and prerm scripts, and adds
26 ifndef _cdbs_rules_divert
27 _cdbs_rules_divert = 1
29 include /usr/share/cdbs/1/rules/debhelper.mk
31 CDBS_BUILD_DEPENDS := $(CDBS_BUILD_DEPENDS), config-package-dev (>= 4.5~)
33 # divert.sh.in is included in the postinst/prerm scripts of packages
34 # installing diversions using config-package-dev.
35 DEB_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
38 DEB_DIVERT_ENCODER = /usr/share/config-package-dev/encode
40 DEB_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)),$(package)))))))
47 ifeq ($(DEB_DIVERT_EXTENSION),)
48 DEB_DIVERT_EXTENSION = .divert
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
54 divert_files_replace_name = $(shell echo $(1) | perl -pe 's/(.*)\Q$(DEB_DIVERT_EXTENSION)\E/$$1$(2)/')
56 # Transform a full path into the path it should be diverted to if it's
58 remove_files_name = /usr/share/$(cdbs_curpkg)/$(shell $(DEB_DIVERT_ENCODER) $(1))
60 debian-divert/%: package = $(subst debian-divert/,,$@)
61 debian-divert/%: divert_files = $(DEB_DIVERT_FILES_$(package)) $(DEB_TRANSFORM_FILES_$(package))
62 debian-divert/%: divert_remove_files = $(DEB_REMOVE_FILES_$(package))
63 debian-divert/%: divert_undivert_files = $(DEB_UNDIVERT_FILES_$(package))
64 debian-divert/%: divert_unremove_files = $(DEB_UNREMOVE_FILES_$(package))
65 debian-divert/%: divert_files_all = $(strip $(divert_files) $(divert_remove_files) $(divert_undivert_files) $(divert_unremove_files))
66 debian-divert/%: divert_files_thispkg = $(strip $(divert_files) $(divert_remove_files))
67 $(patsubst %,debian-divert/%,$(DEB_DIVERT_PACKAGES)) :: debian-divert/%:
68 # Writing shell scripts in makefiles sucks. Remember to $$ shell
69 # variables and include \ at the end of each line.
70 # Add code to postinst to add/remove diversions as appropriate
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 [ "$$1" = "configure" ]; then'; \
76 $(foreach file,$(divert_undivert_files), \
77 echo " check_undivert_unlink $(call divert_files_replace_name,$(file), )"; )\
78 $(foreach file,$(divert_unremove_files), \
79 echo " check_undivert_unremove $(file) $(call remove_files_name,$(file))"; )\
80 $(foreach file,$(divert_files), \
81 echo " divert_link $(call divert_files_replace_name,$(file), )";) \
82 $(foreach file,$(divert_remove_files), \
83 mkdir -p debian/$(cdbs_curpkg)/usr/share/$(cdbs_curpkg); \
84 echo " divert_remove $(file) $(call remove_files_name,$(file))";) \
87 } >> $(CURDIR)/debian/$(cdbs_curpkg).postinst.debhelper
88 # Add code to prerm script to undo diversions when package is removed.
91 sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \
92 $(if $(divert_files_thispkg), \
93 echo 'if [ "$$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)";) \
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)
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))"; \
115 } >> $(CURDIR)/debian/$(cdbs_curpkg).substvars
117 $(patsubst %,binary-post-install/%,$(DEB_DIVERT_PACKAGES)) :: binary-post-install/%: debian-divert/%