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 displace.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 | # displace.mk handles the low-level diversion logic. It includes |
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24 | # displace.sh.in in the postinst and prerm scripts, and adds calls to |
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25 | # the functions in displace.sh.in to add and remove diversions and |
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26 | # symlinks at the appropriate points. |
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27 | |
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28 | ifndef _cdbs_rules_displace |
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29 | _cdbs_rules_displace = 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 (>= 5.0~) |
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34 | |
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35 | # displace.sh.in is included in the postinst/prerm scripts of packages |
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36 | # installing diversions and symlinks using config-package-dev. |
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37 | DEB_DISPLACE_SCRIPT = /usr/share/debhelper/autoscripts/displace.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_DISPLACE_ENCODER = /usr/share/config-package-dev/encode |
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41 | |
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42 | DEB_DISPLACE_PACKAGES += $(foreach package,$(DEB_ALL_PACKAGES), \ |
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43 | $(if $(DEB_TRANSFORM_FILES_$(package)),$(package), \ |
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44 | $(if $(DEB_HIDE_FILES_$(package)),$(package), \ |
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45 | $(if $(DEB_UNHIDE_FILES_$(package)),$(package), \ |
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46 | $(if $(DEB_UNDISPLACE_FILES_$(package)),$(package), \ |
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47 | $(if $(DEB_DISPLACE_FILES_$(package)),$(package), \ |
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48 | $(if $(DEB_REMOVE_FILES_$(package)),$(package), \ |
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49 | $(if $(DEB_UNREMOVE_FILES_$(package)),$(package), \ |
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50 | $(if $(DEB_UNDIVERT_FILES_$(package)),$(package), \ |
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51 | $(if $(DEB_DIVERT_FILES_$(package)),$(package))))))))))) |
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52 | |
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53 | ifeq ($(DEB_DISPLACE_EXTENSION),) |
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54 | ifeq ($(DEB_DIVERT_EXTENSION),) |
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55 | DEB_DISPLACE_EXTENSION = .divert |
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56 | else |
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57 | DEB_DISPLACE_EXTENSION = $(DEB_DIVERT_EXTENSION) |
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58 | endif |
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59 | endif |
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60 | |
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61 | ifeq ($(filter .%,$(DEB_DISPLACE_EXTENSION)),) |
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62 | DEB_DISPLACE_EXTENSION := .$(DEB_DISPLACE_EXTENSION) |
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63 | endif |
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64 | |
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65 | # Replace only the last instance of DEB_DISPLACE_EXTENSION in the |
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66 | # filename, to make it possible to displace /path/foo.divert to |
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67 | # foo.divert.divert-orig |
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68 | displace_files_replace_name = $(shell echo $(1) | perl -pe 's/(.*)\Q$(DEB_DISPLACE_EXTENSION)\E/$$1$(2)/') |
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69 | |
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70 | # Encode a full path into the path it should be diverted to if it's |
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71 | # hidden |
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72 | hide_files_name = /usr/share/$(cdbs_curpkg)/$(shell $(DEB_DISPLACE_ENCODER) $(1)) |
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73 | |
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74 | dh_compat_6 := $(shell if [ '$(DH_COMPAT)' -ge 6 ]; then echo y; fi) |
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75 | |
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76 | reverse = $(foreach n,$(shell seq $(words $(1)) -1 1),$(word $(n),$(1))) |
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77 | reverse_dh_compat_6 = $(if $(dh_compat_6),$(call reverse,$(1)),$(1)) |
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78 | |
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79 | debian-displace/%: package = $(subst debian-displace/,,$@) |
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80 | debian-displace/%: displace_files = $(DEB_DISPLACE_FILES_$(package)) $(DEB_DIVERT_FILES_$(package)) $(DEB_TRANSFORM_FILES_$(package)) |
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81 | debian-displace/%: displace_hide_files = $(DEB_HIDE_FILES_$(package)) $(DEB_REMOVE_FILES_$(package)) |
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82 | debian-displace/%: displace_undisplace_files = $(DEB_UNDISPLACE_FILES_$(package)) $(DEB_UNDIVERT_FILES_$(package)) |
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83 | debian-displace/%: displace_unhide_files = $(DEB_UNHIDE_FILES_$(package)) $(DEB_UNREMOVE_FILES_$(package)) |
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84 | debian-displace/%: displace_files_all = $(strip $(displace_files) $(displace_hide_files) $(displace_undisplace_files) $(displace_unhide_files)) |
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85 | debian-displace/%: displace_files_thispkg = $(strip $(displace_files) $(displace_hide_files)) |
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86 | $(patsubst %,debian-displace/%,$(DEB_DISPLACE_PACKAGES)) :: debian-displace/%: |
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87 | # Writing shell scripts in makefiles sucks. Remember to $$ shell |
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88 | # variables and include \ at the end of each line. |
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89 | # Add code to postinst to add/remove diversions and symlinks as appropriate |
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90 | set -e; \ |
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91 | { \ |
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92 | sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DISPLACE_EXTENSION#/$(DEB_DISPLACE_EXTENSION)/g' $(DEB_DISPLACE_SCRIPT); \ |
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93 | $(if $(displace_files_all), \ |
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94 | echo 'if [ "$$1" = "configure" ]; then'; \ |
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95 | $(foreach file,$(displace_undisplace_files), \ |
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96 | echo " check_undisplace_unlink $(call displace_files_replace_name,$(file), )"; )\ |
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97 | $(foreach file,$(displace_unhide_files), \ |
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98 | echo " check_undisplace_unhide $(file) $(call hide_files_name,$(file))"; )\ |
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99 | $(foreach file,$(displace_files), \ |
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100 | echo " displace_link $(call displace_files_replace_name,$(file), )";) \ |
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101 | $(foreach file,$(displace_hide_files), \ |
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102 | mkdir -p debian/$(cdbs_curpkg)/usr/share/$(cdbs_curpkg); \ |
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103 | echo " displace_hide $(file) $(call hide_files_name,$(file))";) \ |
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104 | echo 'fi'; \ |
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105 | ) \ |
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106 | } >> $(CURDIR)/debian/$(cdbs_curpkg).postinst.debhelper |
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107 | # Add code to prerm script to undo diversions and symlinks when package is removed. |
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108 | set -e; \ |
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109 | { \ |
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110 | $(if $(dh_compat_6),, \ |
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111 | if [ -e $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper ]; then \ |
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112 | cat $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper; \ |
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113 | fi;) \ |
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114 | sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DISPLACE_EXTENSION#/$(DEB_DISPLACE_EXTENSION)/g' $(DEB_DISPLACE_SCRIPT); \ |
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115 | $(if $(displace_files_thispkg), \ |
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116 | echo 'if [ "$$1" = "remove" ] || [ "$$1" = "deconfigure" ]; then'; \ |
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117 | $(foreach file,$(call reverse_dh_compat_6,$(displace_files)), \ |
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118 | echo " undisplace_unlink $(call displace_files_replace_name,$(file), )";) \ |
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119 | $(foreach file,$(call reverse_dh_compat_6,$(displace_hide_files)), \ |
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120 | echo " undisplace_unhide $(file) $(cdbs_curpkg)";) \ |
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121 | echo 'fi'; \ |
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122 | ) \ |
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123 | $(if $(dh_compat_6), \ |
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124 | if [ -e $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper ]; then \ |
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125 | cat $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper; \ |
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126 | fi;) \ |
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127 | } >> $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper.new |
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128 | mv $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper.new \ |
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129 | $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper |
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130 | # Add an encoding of the names of the diverted files to the Provides: |
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131 | # and Conflicts: lists. This prevents two packages diverting the same |
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132 | # file from being installed simultaneously (it cannot work, and this |
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133 | # produces a much less ugly error). Requires in debian/control: |
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134 | # Provides: ${diverted-files} |
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135 | # Conflicts: ${diverted-files} |
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136 | set -e; \ |
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137 | { \ |
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138 | echo -n "diverted-files="; \ |
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139 | $(foreach file,$(displace_files_thispkg),\ |
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140 | echo -n "diverts-"; \ |
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141 | ${DEB_DISPLACE_ENCODER} "$(call displace_files_replace_name,$(file))"; \ |
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142 | echo -n ", ";) \ |
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143 | echo; \ |
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144 | } >> $(CURDIR)/debian/$(cdbs_curpkg).substvars |
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145 | |
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146 | $(patsubst %,binary-post-install/%,$(DEB_DISPLACE_PACKAGES)) :: binary-post-install/%: debian-displace/% |
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147 | |
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148 | endif |
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