# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307 USA.
+# Don't include divert.mk in your rules files directly; instead use
+# config-package.mk.
+
+# divert.mk handles the low-level diversion logic. It includes
+# divert.sh.in in the postinst and prerm scripts, and adds
+
ifndef _cdbs_rules_divert
_cdbs_rules_divert = 1
-CDBS_BUILD_DEPENDS := $(CDBS_BUILD_DEPENDS), config-package-dev (>= 4.4)
+include /usr/share/cdbs/1/rules/debhelper.mk
+
+CDBS_BUILD_DEPENDS := $(CDBS_BUILD_DEPENDS), config-package-dev (>= 4.5~)
+# divert.sh.in is included in the postinst/prerm scripts of packages
+# installing diversions using config-package-dev.
DEB_DIVERT_SCRIPT = /usr/share/config-package-dev/divert.sh.in
+# script used to encode the path of a file uniquely in a valid virtual
+# package name.
+DEB_DIVERT_ENCODER = /usr/share/config-package-dev/encode
DEB_DIVERT_PACKAGES += $(foreach package,$(DEB_ALL_PACKAGES), \
- $(if $(DEB_REPLACE_FILES_$(package)),$(package), \
+ $(if $(DEB_TRANSFORM_FILES_$(package)),$(package), \
$(if $(DEB_REMOVE_FILES_$(package)),$(package), \
$(if $(DEB_UNREMOVE_FILES_$(package)),$(package), \
$(if $(DEB_UNDIVERT_FILES_$(package)),$(package), \
DEB_DIVERT_EXTENSION = .divert
endif
-DEB_DIVERT_ENCODER = /usr/share/config-package-dev/encode
-
+# Replace only the last instance of DEB_DIVERT_EXTENSION in the
+# filename, to make it possible to divert /path/foo.divert to
+# foo.divert.divert-orig
divert_files_replace_name = $(shell echo $(1) | perl -pe 's/(.*)\Q$(DEB_DIVERT_EXTENSION)\E/$$1$(2)/')
+# Transform a full path into the path it should be diverted to if it's
+# removed
+remove_files_name = /usr/share/$(cdbs_curpkg)/$(shell $(DEB_DIVERT_ENCODER) $(1))
+
+dh_compat_5 := $(shell if [ '$(DH_COMPAT)' -ge 5 ]; then echo y; fi)
+
+reverse = $(foreach n,$(shell seq $(words $(1)) -1 1),$(word $(n),$(1)))
+reverse_dh_compat_5 = $(if $(dh_compat_5),$(call reverse,$(1)),$(1))
+
debian-divert/%: package = $(subst debian-divert/,,$@)
-debian-divert/%: divert_files = $(DEB_DIVERT_FILES_$(package)) $(DEB_REPLACE_FILES_$(package))
+debian-divert/%: divert_files = $(DEB_DIVERT_FILES_$(package)) $(DEB_TRANSFORM_FILES_$(package))
debian-divert/%: divert_remove_files = $(DEB_REMOVE_FILES_$(package))
debian-divert/%: divert_undivert_files = $(DEB_UNDIVERT_FILES_$(package))
debian-divert/%: divert_unremove_files = $(DEB_UNREMOVE_FILES_$(package))
debian-divert/%: divert_files_all = $(strip $(divert_files) $(divert_remove_files) $(divert_undivert_files) $(divert_unremove_files))
debian-divert/%: divert_files_thispkg = $(strip $(divert_files) $(divert_remove_files))
$(patsubst %,debian-divert/%,$(DEB_DIVERT_PACKAGES)) :: debian-divert/%:
- ( \
+# Writing shell scripts in makefiles sucks. Remember to $$ shell
+# variables and include \ at the end of each line.
+# Add code to postinst to add/remove diversions as appropriate
+ set -e; \
+ { \
sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \
$(if $(divert_files_all), \
echo 'if [ "$$1" = "configure" ]; then'; \
$(foreach file,$(divert_undivert_files), \
- $(if $(DEB_UNDIVERT_FILES_VERSION_$(file)),,\
- echo "ERROR! Missing undivert version for $(file)!">&2; exit 1;) \
- echo -n " if [ -n \"\$$2\" ] && dpkg --compare-versions \"\$$2\" '<<' "; \
- echo "'$(DEB_UNDIVERT_FILES_VERSION_$(file))'; then"; \
- echo " undivert_unlink $(call divert_files_replace_name,$(file), )"; \
- echo " fi";) \
+ echo " check_undivert_unlink $(call divert_files_replace_name,$(file), )"; )\
$(foreach file,$(divert_unremove_files), \
- $(if $(DEB_UNREMOVE_FILES_VERSION_$(file)),,\
- echo "ERROR! Missing unremove version for $(file)!">&2; exit 1;) \
- echo -n " if [ -n \"\$$2\" ] && dpkg --compare-versions \"\$$2\" '<<' "; \
- echo "'$(DEB_UNREMOVE_FILES_VERSION_$(file))'; then"; \
- echo " undivert_unremove $(file)"; \
- echo " fi";) \
+ echo " check_undivert_unremove $(file) $(call remove_files_name,$(file))"; )\
$(foreach file,$(divert_files), \
echo " divert_link $(call divert_files_replace_name,$(file), )";) \
$(foreach file,$(divert_remove_files), \
- mkdir -p $(DEB_DESTDIR)/usr/share/$(cdbs_curpkg); \
- echo " divert_remove $(file) /usr/share/$(cdbs_curpkg)/`$(DEB_DIVERT_ENCODER) $(file)`";) \
+ mkdir -p debian/$(cdbs_curpkg)/usr/share/$(cdbs_curpkg); \
+ echo " divert_remove $(file) $(call remove_files_name,$(file))";) \
echo 'fi'; \
) \
- ) >> $(CURDIR)/debian/$(cdbs_curpkg).postinst.debhelper
- ( \
+ } >> $(CURDIR)/debian/$(cdbs_curpkg).postinst.debhelper
+# Add code to prerm script to undo diversions when package is removed.
+ set -e; \
+ { \
+ $(if $(dh_compat_5),, \
+ if [ -e $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper ]; then \
+ cat $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper; \
+ fi;) \
sed 's/#PACKAGE#/$(cdbs_curpkg)/g; s/#DEB_DIVERT_EXTENSION#/$(DEB_DIVERT_EXTENSION)/g' $(DEB_DIVERT_SCRIPT); \
$(if $(divert_files_thispkg), \
echo 'if [ "$$1" = "remove" ]; then'; \
- $(foreach file,$(divert_files), \
+ $(foreach file,$(call reverse_dh_compat_5,$(divert_files)), \
echo " undivert_unlink $(call divert_files_replace_name,$(file), )";) \
- $(foreach file,$(divert_remove_files), \
+ $(foreach file,$(call reverse_dh_compat_5,$(divert_remove_files)), \
echo " undivert_unremove $(file) $(cdbs_curpkg)";) \
echo 'fi'; \
) \
- ) >> $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper
- ( \
+ $(if $(dh_compat_5), \
+ if [ -e $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper ]; then \
+ cat $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper; \
+ fi;) \
+ } >> $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper.new
+ mv $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper.new \
+ $(CURDIR)/debian/$(cdbs_curpkg).prerm.debhelper
+# Add an encoding of the names of the diverted files to the Provides:
+# and Conflicts: lists. This prevents two packages diverting the same
+# file from being installed simultaneously (it cannot work, and this
+# produces a much less ugly error). Requires in debian/control:
+# Provides: $(diverted-files)
+# Conflicts: $(diverted-files)
+ set -e; \
+ { \
echo -n "diverted-files="; \
$(foreach file,$(divert_files_thispkg),\
- echo -n "configures-"; \
+ echo -n "diverts-"; \
${DEB_DIVERT_ENCODER} "$(call divert_files_replace_name,$(file))"; \
echo -n ", ";) \
- echo \
- ) >> $(CURDIR)/debian/$(cdbs_curpkg).substvars
+ echo; \
+ } >> $(CURDIR)/debian/$(cdbs_curpkg).substvars
-$(patsubst %,binary-fixup/%,$(DEB_DIVERT_PACKAGES)) :: binary-fixup/%: debian-divert/%
+$(patsubst %,binary-post-install/%,$(DEB_DIVERT_PACKAGES)) :: binary-post-install/%: debian-divert/%
endif
andersk / config-package-dev.git / blobdiff