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 |
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25 | |
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26 | ifndef _cdbs_rules_divert |
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27 | _cdbs_rules_divert = 1 |
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28 | |
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29 | include /usr/share/cdbs/1/rules/debhelper.mk |
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30 | |
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31 | CDBS_BUILD_DEPENDS := $(CDBS_BUILD_DEPENDS), config-package-dev (>= 4.5~) |
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32 | |
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33 | # divert.sh.in is included in the postinst/prerm scripts of packages |
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34 | # installing diversions using config-package-dev. |
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35 | DEB_DIVERT_SCRIPT = /usr/share/config-package-dev/divert.sh.in |
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36 | # script used to encode the path of a file uniquely in a valid virtual |
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37 | # package name. |
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38 | DEB_DIVERT_ENCODER = /usr/share/config-package-dev/encode |
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39 | |
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40 | DEB_DIVERT_PACKAGES += $(foreach package,$(DEB_ALL_PACKAGES), \ |
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41 | $(if $(DEB_TRANSFORM_FILES_$(package)),$(package), \ |
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42 | $(if $(DEB_REMOVE_FILES_$(package)),$(package), \ |
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43 | $(if $(DEB_UNREMOVE_FILES_$(package)),$(package), \ |
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44 | $(if $(DEB_UNDIVERT_FILES_$(package)),$(package), \ |
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45 | $(if $(DEB_DIVERT_FILES_$(package)),$(package))))))) |
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46 | |
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47 | ifeq ($(DEB_DIVERT_EXTENSION),) |
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48 | DEB_DIVERT_EXTENSION = .divert |
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49 | endif |
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50 | |
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51 | # Replace only the last instance of DEB_DIVERT_EXTENSION in the |
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52 | # filename, to make it possible to divert /path/foo.divert to |
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53 | # foo.divert.divert-orig |
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54 | divert_files_replace_name = $(shell echo $(1) | perl -pe 's/(.*)\Q$(DEB_DIVERT_EXTENSION)\E/$$1$(2)/') |
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55 | |
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56 | debian-divert/%: package = $(subst debian-divert/,,$@) |
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57 | debian-divert/%: divert_files = $(DEB_DIVERT_FILES_$(package)) $(DEB_TRANSFORM_FILES_$(package)) |
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58 | debian-divert/%: divert_remove_files = $(DEB_REMOVE_FILES_$(package)) |
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59 | debian-divert/%: divert_undivert_files = $(DEB_UNDIVERT_FILES_$(package)) |
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60 | debian-divert/%: divert_unremove_files = $(DEB_UNREMOVE_FILES_$(package)) |
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61 | debian-divert/%: divert_files_all = $(strip $(divert_files) $(divert_remove_files) $(divert_undivert_files) $(divert_unremove_files)) |
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62 | debian-divert/%: divert_files_thispkg = $(strip $(divert_files) $(divert_remove_files)) |
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63 | $(patsubst %,debian-divert/%,$(DEB_DIVERT_PACKAGES)) :: debian-divert/%: |
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64 | # Writing shell scripts in makefiles sucks. Remember to $$ shell |
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65 | # variables and include \ at the end of each line. |
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66 | # Add code to postinst to add/remove diversions as appropriate |
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67 | ( \ |
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68 | sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \ |
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69 | $(if $(divert_files_all), \ |
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70 | echo 'if [ "$$1" = "configure" ]; then'; \ |
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71 | $(foreach file,$(divert_undivert_files), \ |
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72 | $(if $(DEB_UNDIVERT_VERSION_$(file)),,\ |
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73 | echo "ERROR! Missing undivert version for $(file)!">&2; exit 1;) \ |
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74 | echo -n " if [ -n \"\$$2\" ] && dpkg --compare-versions \"\$$2\" '<<' "; \ |
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75 | echo "'$(DEB_UNDIVERT_VERSION_$(file))'; then"; \ |
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76 | echo " undivert_unlink $(call divert_files_replace_name,$(file), )"; \ |
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77 | echo " fi";) \ |
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78 | $(foreach file,$(divert_unremove_files), \ |
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79 | $(if $(DEB_UNREMOVE_VERSION_$(file)),,\ |
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80 | echo "ERROR! Missing unremove version for $(file)!">&2; exit 1;) \ |
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81 | echo -n " if [ -n \"\$$2\" ] && dpkg --compare-versions \"\$$2\" '<<' "; \ |
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82 | echo "'$(DEB_UNREMOVE_VERSION_$(file))'; then"; \ |
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83 | echo " undivert_unremove $(file)"; \ |
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84 | echo " fi";) \ |
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85 | $(foreach file,$(divert_files), \ |
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86 | echo " divert_link $(call divert_files_replace_name,$(file), )";) \ |
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87 | $(foreach file,$(divert_remove_files), \ |
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88 | mkdir -p $(DEB_DESTDIR)/usr/share/$(cdbs_curpkg); \ |
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89 | echo " divert_remove $(file) /usr/share/$(cdbs_curpkg)/`$(DEB_DIVERT_ENCODER) $(file)`";) \ |
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90 | echo 'fi'; \ |
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91 | ) \ |
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92 | ) >> $(CURDIR)/debian/$(cdbs_curpkg).postinst.debhelper |
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93 | # Add code to prerm script to undo diversions when package is removed. |
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94 | ( \ |
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95 | sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \ |
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96 | $(if $(divert_files_thispkg), \ |
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97 | echo 'if [ "$$1" = "remove" ]; then'; \ |
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98 | $(foreach file,$(divert_files), \ |
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99 | echo " undivert_unlink $(call divert_files_replace_name,$(file), )";) \ |
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100 | $(foreach file,$(divert_remove_files), \ |
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101 | echo " undivert_unremove $(file) $(cdbs_curpkg)";) \ |
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102 | echo 'fi'; \ |
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103 | ) \ |
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104 | ) >> $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper |
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105 | # Add an encoding of the names of the diverted files to the Provides: |
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106 | # and Conflicts: lists. This prevents two packages diverting the same |
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107 | # file from being installed simultaneously (it cannot work, and this |
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108 | # produces a much less ugly error). Requires in debian/control: |
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109 | # Provides: $(diverted-files) |
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110 | # Conflicts: $(diverted-files) |
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111 | ( \ |
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112 | echo -n "diverted-files="; \ |
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113 | $(foreach file,$(divert_files_thispkg),\ |
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114 | echo -n "diverts-"; \ |
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115 | ${DEB_DIVERT_ENCODER} "$(call divert_files_replace_name,$(file))"; \ |
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116 | echo -n ", ";) \ |
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117 | echo \ |
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118 | ) >> $(CURDIR)/debian/$(cdbs_curpkg).substvars |
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119 | |
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120 | $(patsubst %,binary-post-install/%,$(DEB_DIVERT_PACKAGES)) :: binary-post-install/%: debian-divert/% |
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121 | |
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122 | endif |
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