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/$$1$(2)/')
56 debian-divert/%: package = $(subst debian-divert/,,$@)
57 debian-divert/%: divert_files = $(DEB_DIVERT_FILES_$(package)) $(DEB_TRANSFORM_FILES_$(package))
58 debian-divert/%: divert_remove_files = $(DEB_REMOVE_FILES_$(package))
59 debian-divert/%: divert_undivert_files = $(DEB_UNDIVERT_FILES_$(package))
60 debian-divert/%: divert_unremove_files = $(DEB_UNREMOVE_FILES_$(package))
61 debian-divert/%: divert_files_all = $(strip $(divert_files) $(divert_remove_files) $(divert_undivert_files) $(divert_unremove_files))
62 debian-divert/%: divert_files_thispkg = $(strip $(divert_files) $(divert_remove_files))
63 $(patsubst %,debian-divert/%,$(DEB_DIVERT_PACKAGES)) :: debian-divert/%:
64 # Writing shell scripts in makefiles sucks. Remember to $$ shell
65 # variables and include \ at the end of each line.
66 # Add code to postinst to add/remove diversions as appropriate
69 sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \
70 $(if $(divert_files_all), \
71 echo 'if [ "$$1" = "configure" ]; then'; \
72 $(foreach file,$(divert_undivert_files), \
73 $(if $(DEB_UNDIVERT_VERSION_$(file)),,\
74 echo "ERROR! Missing undivert version for $(file)!">&2; exit 1;) \
75 echo -n " if [ -n \"\$$2\" ] && dpkg --compare-versions \"\$$2\" '<<' "; \
76 echo "'$(DEB_UNDIVERT_VERSION_$(file))'; then"; \
77 echo " undivert_unlink $(call divert_files_replace_name,$(file), )"; \
79 $(foreach file,$(divert_unremove_files), \
80 $(if $(DEB_UNREMOVE_VERSION_$(file)),,\
81 echo "ERROR! Missing unremove version for $(file)!">&2; exit 1;) \
82 echo -n " if [ -n \"\$$2\" ] && dpkg --compare-versions \"\$$2\" '<<' "; \
83 echo "'$(DEB_UNREMOVE_VERSION_$(file))'; then"; \
84 echo " undivert_unremove $(file)"; \
86 $(foreach file,$(divert_files), \
87 echo " divert_link $(call divert_files_replace_name,$(file), )";) \
88 $(foreach file,$(divert_remove_files), \
89 mkdir -p debian/$(cdbs_curpkg)/usr/share/$(cdbs_curpkg); \
90 echo " divert_remove $(file) /usr/share/$(cdbs_curpkg)/`$(DEB_DIVERT_ENCODER) $(file)`";) \
93 } >> $(CURDIR)/debian/$(cdbs_curpkg).postinst.debhelper
94 # Add code to prerm script to undo diversions when package is removed.
97 sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \
98 $(if $(divert_files_thispkg), \
99 echo 'if [ "$$1" = "remove" ]; then'; \
100 $(foreach file,$(divert_files), \
101 echo " undivert_unlink $(call divert_files_replace_name,$(file), )";) \
102 $(foreach file,$(divert_remove_files), \
103 echo " undivert_unremove $(file) $(cdbs_curpkg)";) \
106 } >> $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper
107 # Add an encoding of the names of the diverted files to the Provides:
108 # and Conflicts: lists. This prevents two packages diverting the same
109 # file from being installed simultaneously (it cannot work, and this
110 # produces a much less ugly error). Requires in debian/control:
111 # Provides: $(diverted-files)
112 # Conflicts: $(diverted-files)
115 echo -n "diverted-files="; \
116 $(foreach file,$(divert_files_thispkg),\
117 echo -n "diverts-"; \
118 ${DEB_DIVERT_ENCODER} "$(call divert_files_replace_name,$(file))"; \
121 } >> $(CURDIR)/debian/$(cdbs_curpkg).substvars
123 $(patsubst %,binary-post-install/%,$(DEB_DIVERT_PACKAGES)) :: binary-post-install/%: debian-divert/%