Build: Add options to disable individual command line tools.

configure.ac

@@ -369,6 +369,44 @@ AC_DEFINE_UNQUOTED([ASSUME_RAM], [$enable_assume_ram],
 		be determined.])
 
 
+#########################
+# Components to install #
+#########################
+
+AC_ARG_ENABLE([xz], [AC_HELP_STRING([--disable-xz],
+		[do not build the xz tool])],
+	[], [enable_xz=yes])
+AM_CONDITIONAL([COND_XZ], [test x$enable_xz != xno])
+
+AC_ARG_ENABLE([xzdec], [AC_HELP_STRING([--disable-xzdec],
+		[do not build xzdec])],
+	[], [enable_xzdec=yes])
+AM_CONDITIONAL([COND_XZDEC], [test x$enable_xzdec != xno])
+
+AC_ARG_ENABLE([lzmadec], [AC_HELP_STRING([--disable-lzmadec],
+		[do not build lzmadec
+		(it exists primarily for LZMA Utils compatibility)])],
+	[], [enable_lzmadec=yes])
+AM_CONDITIONAL([COND_LZMADEC], [test x$enable_lzmadec != xno])
+
+AC_ARG_ENABLE([lzmainfo], [AC_HELP_STRING([--disable-lzmainfo],
+		[do not build lzmainfo
+		(it exists primarily for LZMA Utils compatibility)])],
+	[], [enable_lzmainfo=yes])
+AM_CONDITIONAL([COND_LZMAINFO], [test x$enable_lzmainfo != xno])
+
+AC_ARG_ENABLE([lzma-links], [AC_HELP_STRING([--disable-lzma-links],
+		[do not create symlinks for LZMA Utils compatibility])],
+	[], [enable_lzma_links=yes])
+AM_CONDITIONAL([COND_LZMALINKS], [test x$enable_lzma_links != xno])
+
+AC_ARG_ENABLE([scripts], [AC_HELP_STRING([--disable-scripts],
+		[do not install the scripts xzdiff, xzgrep, xzless, xzmore,
+		and their symlinks])],
+	[], [enable_scripts=yes])
+AM_CONDITIONAL([COND_SCRIPTS], [test x$enable_scripts != xno])
+
+
 ###############################################################################
 # Checks for programs.
 ###############################################################################

src/Makefile.am

@@ -5,5 +5,18 @@
 ## You can do whatever you want with this file.
 ##
 
-SUBDIRS = liblzma xz xzdec lzmainfo scripts
+SUBDIRS = liblzma xzdec
+
+if COND_XZ
+SUBDIRS += xz
+endif
+
+if COND_LZMAINFO
+SUBDIRS += lzmainfo
+endif
+
+if COND_SCRIPTS
+SUBDIRS += scripts
+endif
+
 EXTRA_DIST = common

src/scripts/Makefile.am

@@ -8,58 +8,48 @@
 nodist_bin_SCRIPTS = xzdiff xzgrep xzmore xzless
 dist_man_MANS = xzdiff.1 xzgrep.1 xzmore.1 xzless.1
 
+links = \
+	xzdiff-xzcmp \
+	xzgrep-xzegrep \
+	xzgrep-xzfgrep
+
+if COND_LZMALINKS
+links += \
+	xzdiff-lzdiff \
+	xzdiff-lzcmp \
+	xzgrep-lzgrep \
+	xzgrep-lzegrep \
+	xzgrep-lzfgrep \
+	xzmore-lzmore \
+	xzless-lzless
+endif
+
 install-exec-hook:
 	cd $(DESTDIR)$(bindir) && \
-	target=`echo xzdiff | sed '$(transform)'` && \
+	for pair in $(links); do \
-	for name in xzcmp lzdiff lzcmp; do \
+		target=`echo $$pair | sed 's/-.*$$//' | sed '$(transform)'` && \
-		link=`echo $$name | sed '$(transform)'` && \
+		link=`echo $$pair | sed 's/^.*-//' | sed '$(transform)'` && \
-		rm -f $$link && \
-		$(LN_S) $$target $$link; \
-	done && \
-	target=`echo xzgrep | sed '$(transform)'` && \
-	for name in xzegrep xzfgrep lzgrep lzegrep lzfgrep; do \
-		link=`echo $$name | sed '$(transform)'` && \
-		rm -f $$link && \
-		$(LN_S) $$target $$link; \
-	done && \
-	for name in xzmore xzless; do \
-		target=`echo $$name | sed '$(transform)'` && \
-		link=`echo $$name | sed 's/xz/lz/;$(transform)'` && \
 		rm -f $$link && \
 		$(LN_S) $$target $$link; \
 	done
 
 install-data-hook:
 	cd $(DESTDIR)$(mandir)/man1 && \
-	target=`echo xzdiff | sed '$(transform)'` && \
+	for pair in $(links); do \
-	for name in xzcmp lzdiff lzcmp; do \
+		target=`echo $$pair | sed 's/-.*$$//' | sed '$(transform)'` && \
-		link=`echo $$name | sed '$(transform)'` && \
+		link=`echo $$pair | sed 's/^.*-//' | sed '$(transform)'` && \
-		rm -f $$link.1 && \
-		$(LN_S) $$target.1 $$link.1; \
-	done && \
-	target=`echo xzgrep | sed '$(transform)'` && \
-	for name in xzegrep xzfgrep lzgrep lzegrep lzfgrep; do \
-		link=`echo $$name | sed '$(transform)'` && \
-		rm -f $$link.1 && \
-		$(LN_S) $$target.1 $$link.1; \
-	done && \
-	for name in xzmore xzless; do \
-		target=`echo $$name | sed '$(transform)'` && \
-		link=`echo $$name | sed 's/xz/lz/;$(transform)'` && \
 		rm -f $$link.1 && \
 		$(LN_S) $$target.1 $$link.1; \
 	done
 
 uninstall-hook:
 	cd $(DESTDIR)$(bindir) && \
-	for name in xzcmp lzdiff lzcmp xzegrep xzfgrep \
+	for pair in $(links); do \
-			lzgrep lzegrep lzfgrep lzmore lzless; do \
+		link=`echo $$pair | sed 's/^.*-//' | sed '$(transform)'` && \
-		link=`echo $$name | sed '$(transform)'` && \
 		rm -f $$link; \
 	done
 	cd $(DESTDIR)$(mandir)/man1 && \
-	for name in xzcmp lzdiff lzcmp xzegrep xzfgrep \
+	for pair in $(links); do \
-			lzgrep lzegrep lzfgrep lzmore lzless; do \
+		link=`echo $$pair | sed 's/^.*-//' | sed '$(transform)'` && \
-		link=`echo $$name | sed '$(transform)'` && \
 		rm -f $$link.1; \
 	done

src/xz/Makefile.am

@@ -69,7 +69,11 @@ dist_man_MANS = xz.1
 
 ## Create symlinks for unxz and xzcat for convenience. Create symlinks also
 ## for lzma, unlzma, and lzcat for compatibility with LZMA Utils 4.32.x.
-xzlinks = unxz xzcat lzma unlzma lzcat
+xzlinks = unxz xzcat
+
+if COND_LZMALINKS
+xzlinks += lzma unlzma lzcat
+endif
 
 install-exec-hook:
 	cd $(DESTDIR)$(bindir) && \

src/xzdec/Makefile.am

@@ -12,8 +12,6 @@
 		$(xzdec_CPPFLAGS) $(CPPFLAGS) $(RCFLAGS) -i $< -o $@
 
 
-bin_PROGRAMS = xzdec lzmadec
-
 xzdec_SOURCES = \
 	xzdec.c \
 	$(top_srcdir)/src/common/tuklib_progname.c \
@@ -51,8 +49,17 @@ lzmadec_LDFLAGS = $(xzdec_LDFLAGS)
 lzmadec_LDADD = $(xzdec_LDADD)
 
 
-dist_man_MANS = xzdec.1
+bin_PROGRAMS =
 
+if COND_XZDEC
+bin_PROGRAMS += xzdec
+dist_man_MANS = xzdec.1
+endif
+
+if COND_LZMADEC
+bin_PROGRAMS += lzmadec
+
+# FIXME: If xzdec is disabled, this will create a dangling symlink.
 install-data-hook:
 	cd $(DESTDIR)$(mandir)/man1 && \
 	target=`echo xzdec | sed '$(transform)'` && \
@@ -64,3 +71,4 @@ uninstall-hook:
 	cd $(DESTDIR)$(mandir)/man1 && \
 	link=`echo lzmadec | sed '$(transform)'` && \
 	rm -f $$link.1
+endif