share/mk/: Remove support for installing compressed pages

I don't like compressed pages: they make it more difficult/slow to grep
them.  This was added to make it easier for users to install compressed
pages even when installing from source, but probably nobody cares at all
these days about a few KiB per page; drive space got cheap.  Also, some
of the algorithms were added just for benchmarking (for demonstrating
that they were bad in this case), and not for real use.

This reduces a use of compression tools, which seem to be dangerous
these days.

Link: <https://tukaani.org/xz-backdoor/>
Link: <https://cmpct.info/~sam/blog/posts/automatic-manpage-compression/>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

2 files changed, 4 insertions, 51 deletions

diff --git a/share/mk/configure/man/z.mk b/share/mk/configure/man/z.mk
deleted file mode 100644
index 8328abfd7..000000000
--- a/share/mk/configure/man/z.mk
+++ /dev/null
@@ -1,21 +0,0 @@
-# Copyright 2023-2024, Alejandro Colomar <alx@kernel.org>
-# SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
-
-
-ifndef MAKEFILE_CONFIGURE_MAN_Z_INCLUDED
-MAKEFILE_CONFIGURE_MAN_Z_INCLUDED := 1
-
-
-Z :=
-ifeq ($(Z),)
-else ifeq ($(Z),.bz2)
-else ifeq ($(Z),.gz)
-else ifeq ($(Z),.lz)
-else ifeq ($(Z),.xz)
-else
-$(warning "Z": "$(Z)")
-$(error Valid values for "Z": ["", ".bz2", ".gz", ".lz", ".xz"])
-endif
-
-
-endif  # include guard
diff --git a/share/mk/install/man.mk b/share/mk/install/man.mk
index e4e0c2262..f32fd01b1 100644
--- a/share/mk/install/man.mk
+++ b/share/mk/install/man.mk
@@ -6,21 +6,16 @@ ifndef MAKEFILE_INSTALL_MAN_INCLUDED
 MAKEFILE_INSTALL_MAN_INCLUDED := 1
 
 
-include $(MAKEFILEDIR)/configure/build-depends/bzip2/bzip2.mk
 include $(MAKEFILEDIR)/configure/build-depends/coreutils/install.mk
 include $(MAKEFILEDIR)/configure/build-depends/coreutils/ln.mk
 include $(MAKEFILEDIR)/configure/build-depends/coreutils/test.mk
 include $(MAKEFILEDIR)/configure/build-depends/findutils/xargs.mk
 include $(MAKEFILEDIR)/configure/build-depends/grep/grep.mk
-include $(MAKEFILEDIR)/configure/build-depends/gzip/gzip.mk
-include $(MAKEFILEDIR)/configure/build-depends/lzip/lzip.mk
 include $(MAKEFILEDIR)/configure/build-depends/moreutils/sponge.mk
 include $(MAKEFILEDIR)/configure/build-depends/sed/sed.mk
-include $(MAKEFILEDIR)/configure/build-depends/xz-utils/xz.mk
 include $(MAKEFILEDIR)/configure/directory_variables/install.mk
 include $(MAKEFILEDIR)/configure/directory_variables/src.mk
 include $(MAKEFILEDIR)/configure/man/link_pages.mk
-include $(MAKEFILEDIR)/configure/man/z.mk
 include $(MAKEFILEDIR)/install/_.mk
 include $(MAKEFILEDIR)/src/man.mk
 
@@ -31,11 +26,11 @@ $(foreach s, $(MANSECTIONS),                                                  \
 
 $(foreach s, $(MANSECTIONS),                                                  \
 	$(eval _man$(s)pages :=                                               \
-		$(patsubst $(MAN$(s)DIR)/%.$(s), $(_man$(s)dir)/%$(man$(s)ext)$(Z), \
+		$(patsubst $(MAN$(s)DIR)/%.$(s), $(_man$(s)dir)/%$(man$(s)ext), \
 			$(MAN$(s)PAGES))))
 $(foreach s, $(MANSECTIONS),                                                  \
 	$(eval _man$(s)intropage :=                                           \
-		$(patsubst $(MAN$(s)DIR)/%.$(s), $(_man$(s)dir)/%$(man$(s)ext)$(Z), \
+		$(patsubst $(MAN$(s)DIR)/%.$(s), $(_man$(s)dir)/%$(man$(s)ext), \
 			$(MAN$(s)INTROPAGE))))
 _manintropages := $(foreach s, $(MANSECTIONS), $(_man$(s)intropage))
 _manpages := $(_manintropages) $(foreach s, $(MANSECTIONS), $(_man$(s)pages))
@@ -49,7 +44,7 @@ $(foreach s, $(MANSECTIONS),                                                  \
 
 $(foreach s, $(MANSECTIONS),                                                  \
 	$(eval $(_man$(s)pages) $(_man$(s)intropage):                         \
-		$(_man$(s)dir)/%$(man$(s)ext)$(Z):                            \
+		$(_man$(s)dir)/%$(man$(s)ext):                                \
 			$(_MANDIR)/man$(s)/%.$(s) $(MK) | $$$$(@D)/))
 
 
@@ -57,7 +52,7 @@ $(_manpages):
 	$(info	$(INFO_)INSTALL		$@)
 	<$< \
 	$(SED) $(foreach s, $(MANSECTIONS), \
-		-e '/^\.so /s, man$(s)/\(.*\)\.$(s)$$, $(notdir $(man$(s)dir))/\1$(man$(s)ext)$(Z),') \
+		-e '/^\.so /s, man$(s)/\(.*\)\.$(s)$$, $(notdir $(man$(s)dir))/\1$(man$(s)ext),') \
 	| $(INSTALL_DATA) -T /dev/stdin $@
 ifeq ($(LINK_PAGES),symlink)
 	if $(GREP) '^\.so ' <$@ >/dev/null; then \
@@ -66,27 +61,6 @@ ifeq ($(LINK_PAGES),symlink)
 		| $(XARGS) -I tgt $(LN) -fsT tgt $@; \
 	fi
 endif
-ifeq ($(Z),.bz2)
-	if ! $(TEST) -L $@; then \
-		$(BZIP2) $(BZIP2FLAGS) <$@ \
-		| $(SPONGE) $@; \
-	fi
-else ifeq ($(Z),.gz)
-	if ! $(TEST) -L $@; then \
-		$(GZIP) $(GZIPFLAGS) <$@ \
-		| $(SPONGE) $@; \
-	fi
-else ifeq ($(Z),.lz)
-	if ! $(TEST) -L $@; then \
-		$(LZIP) $(LZIPFLAGS) <$@ \
-		| $(SPONGE) $@; \
-	fi
-else ifeq ($(Z),.xz)
-	if ! $(TEST) -L $@; then \
-		$(XZ) $(XZFLAGS) <$@ \
-		| $(SPONGE) $@; \
-	fi
-endif
 
 
 .PHONY: install-manintro