| 1 | # -*- mode: makefile; coding: utf-8 -*- |
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| 2 | # Copyright © 2007-2008 Anders Kaseorg <andersk@mit.edu> and |
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| 3 | # Tim Abbott <tabbott@mit.edu> |
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| 4 | # |
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| 5 | # This program is free software; you can redistribute it and/or |
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| 6 | # modify it under the terms of the GNU General Public License as |
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| 7 | # published by the Free Software Foundation; either version 2, or (at |
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| 8 | # your option) any later version. |
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| 9 | # |
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| 10 | # This program is distributed in the hope that it will be useful, but |
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| 11 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | # General Public License for more details. |
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| 14 | # |
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| 15 | # You should have received a copy of the GNU General Public License |
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| 16 | # along with this program; if not, write to the Free Software |
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| 17 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 18 | # 02111-1307 USA. |
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| 19 | |
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| 20 | # Don't include divert.mk in your rules files directly; instead use |
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| 21 | # config-package.mk. |
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| 22 | |
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| 23 | # divert.mk handles the low-level diversion logic. It includes |
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| 24 | # divert.sh.in in the postinst and prerm scripts, and adds calls to the |
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| 25 | # functions in divert.sh.in to add and remove diversions and symlinks at |
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| 26 | # the appropriate points. |
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| 27 | |
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| 28 | ifndef _cdbs_rules_divert |
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| 29 | _cdbs_rules_divert = 1 |
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| 30 | |
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| 31 | include /usr/share/cdbs/1/rules/debhelper.mk |
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| 32 | |
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| 33 | CDBS_BUILD_DEPENDS := $(CDBS_BUILD_DEPENDS), config-package-dev (>= 4.5~) |
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| 34 | |
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| 35 | # divert.sh.in is included in the postinst/prerm scripts of packages |
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| 36 | # installing diversions using config-package-dev. |
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| 37 | DEB_DIVERT_SCRIPT = /usr/share/config-package-dev/divert.sh.in |
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| 38 | # script used to encode the path of a file uniquely in a valid virtual |
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| 39 | # package name. |
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| 40 | DEB_DIVERT_ENCODER = /usr/share/config-package-dev/encode |
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| 41 | |
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| 42 | DEB_DIVERT_PACKAGES += $(foreach package,$(DEB_ALL_PACKAGES), \ |
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| 43 | $(if $(DEB_TRANSFORM_FILES_$(package)),$(package), \ |
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| 44 | $(if $(DEB_REMOVE_FILES_$(package)),$(package), \ |
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| 45 | $(if $(DEB_UNREMOVE_FILES_$(package)),$(package), \ |
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| 46 | $(if $(DEB_UNDIVERT_FILES_$(package)),$(package), \ |
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| 47 | $(if $(DEB_DIVERT_FILES_$(package)),$(package))))))) |
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| 48 | |
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| 49 | ifeq ($(DEB_DIVERT_EXTENSION),) |
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| 50 | DEB_DIVERT_EXTENSION = .divert |
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| 51 | endif |
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| 52 | |
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| 53 | # Replace only the last instance of DEB_DIVERT_EXTENSION in the |
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| 54 | # filename, to make it possible to divert /path/foo.divert to |
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| 55 | # foo.divert.divert-orig |
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| 56 | divert_files_replace_name = $(shell echo $(1) | perl -pe 's/(.*)\Q$(DEB_DIVERT_EXTENSION)\E/$$1$(2)/') |
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| 57 | |
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| 58 | # Encode a full path into the path it should be diverted to if it's |
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| 59 | # removed |
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| 60 | remove_files_name = /usr/share/$(cdbs_curpkg)/$(shell $(DEB_DIVERT_ENCODER) $(1)) |
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| 61 | |
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| 62 | dh_compat_6 := $(shell if [ '$(DH_COMPAT)' -ge 6 ]; then echo y; fi) |
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| 63 | |
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| 64 | reverse = $(foreach n,$(shell seq $(words $(1)) -1 1),$(word $(n),$(1))) |
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| 65 | reverse_dh_compat_6 = $(if $(dh_compat_6),$(call reverse,$(1)),$(1)) |
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| 66 | |
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| 67 | debian-divert/%: package = $(subst debian-divert/,,$@) |
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| 68 | debian-divert/%: divert_files = $(DEB_DIVERT_FILES_$(package)) $(DEB_TRANSFORM_FILES_$(package)) |
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| 69 | debian-divert/%: divert_remove_files = $(DEB_REMOVE_FILES_$(package)) |
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| 70 | debian-divert/%: divert_undivert_files = $(DEB_UNDIVERT_FILES_$(package)) |
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| 71 | debian-divert/%: divert_unremove_files = $(DEB_UNREMOVE_FILES_$(package)) |
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| 72 | debian-divert/%: divert_files_all = $(strip $(divert_files) $(divert_remove_files) $(divert_undivert_files) $(divert_unremove_files)) |
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| 73 | debian-divert/%: divert_files_thispkg = $(strip $(divert_files) $(divert_remove_files)) |
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| 74 | $(patsubst %,debian-divert/%,$(DEB_DIVERT_PACKAGES)) :: debian-divert/%: |
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| 75 | # Writing shell scripts in makefiles sucks. Remember to $$ shell |
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| 76 | # variables and include \ at the end of each line. |
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| 77 | # Add code to postinst to add/remove diversions as appropriate |
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| 78 | set -e; \ |
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| 79 | { \ |
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| 80 | sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \ |
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| 81 | $(if $(divert_files_all), \ |
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| 82 | echo 'if [ "$$1" = "configure" ]; then'; \ |
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| 83 | $(foreach file,$(divert_undivert_files), \ |
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| 84 | echo " check_undivert_unlink $(call divert_files_replace_name,$(file), )"; )\ |
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| 85 | $(foreach file,$(divert_unremove_files), \ |
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| 86 | echo " check_undivert_unremove $(file) $(call remove_files_name,$(file))"; )\ |
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| 87 | $(foreach file,$(divert_files), \ |
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| 88 | echo " divert_link $(call divert_files_replace_name,$(file), )";) \ |
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| 89 | $(foreach file,$(divert_remove_files), \ |
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| 90 | mkdir -p debian/$(cdbs_curpkg)/usr/share/$(cdbs_curpkg); \ |
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| 91 | echo " divert_remove $(file) $(call remove_files_name,$(file))";) \ |
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| 92 | echo 'fi'; \ |
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| 93 | ) \ |
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| 94 | } >> $(CURDIR)/debian/$(cdbs_curpkg).postinst.debhelper |
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| 95 | # Add code to prerm script to undo diversions when package is removed. |
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| 96 | set -e; \ |
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| 97 | { \ |
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| 98 | $(if $(dh_compat_6),, \ |
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| 99 | if [ -e $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper ]; then \ |
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| 100 | cat $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper; \ |
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| 101 | fi;) \ |
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| 102 | sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \ |
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| 103 | $(if $(divert_files_thispkg), \ |
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| 104 | echo 'if [ "$$1" = "remove" ] || [ "$$1" = "deconfigure" ]; then'; \ |
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| 105 | $(foreach file,$(call reverse_dh_compat_6,$(divert_files)), \ |
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| 106 | echo " undivert_unlink $(call divert_files_replace_name,$(file), )";) \ |
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| 107 | $(foreach file,$(call reverse_dh_compat_6,$(divert_remove_files)), \ |
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| 108 | echo " undivert_unremove $(file) $(cdbs_curpkg)";) \ |
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| 109 | echo 'fi'; \ |
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| 110 | ) \ |
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| 111 | $(if $(dh_compat_6), \ |
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| 112 | if [ -e $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper ]; then \ |
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| 113 | cat $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper; \ |
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| 114 | fi;) \ |
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| 115 | } >> $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper.new |
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| 116 | mv $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper.new \ |
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| 117 | $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper |
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| 118 | # Add an encoding of the names of the diverted files to the Provides: |
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| 119 | # and Conflicts: lists. This prevents two packages diverting the same |
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| 120 | # file from being installed simultaneously (it cannot work, and this |
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| 121 | # produces a much less ugly error). Requires in debian/control: |
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| 122 | # Provides: ${diverted-files} |
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| 123 | # Conflicts: ${diverted-files} |
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| 124 | set -e; \ |
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| 125 | { \ |
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| 126 | echo -n "diverted-files="; \ |
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| 127 | $(foreach file,$(divert_files_thispkg),\ |
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| 128 | echo -n "diverts-"; \ |
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| 129 | ${DEB_DIVERT_ENCODER} "$(call divert_files_replace_name,$(file))"; \ |
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| 130 | echo -n ", ";) \ |
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| 131 | echo; \ |
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| 132 | } >> $(CURDIR)/debian/$(cdbs_curpkg).substvars |
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| 133 | |
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| 134 | $(patsubst %,binary-post-install/%,$(DEB_DIVERT_PACKAGES)) :: binary-post-install/%: debian-divert/% |
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| 135 | |
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| 136 | endif |
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