X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2FMakefile.am;h=b4300e0183d8f478fc96027cbfb777f7250d4cdd;hb=9b1445bd01af11c9c2b508e2c642fa415fb9c829;hp=c568c3f11bc9a81ffacb864934130e84c7c8ca00;hpb=e08ea16f870eedd2317fd55bc828cae4d4add16e;p=gnulib.git

diff --git a/lib/Makefile.am b/lib/Makefile.am
index c568c3f11..b4300e018 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -35,7 +35,7 @@ BUILT_SOURCES = getdate.c lstat.c stat.c
 MAINTAINERCLEANFILES = $(BUILT_SOURCES)
 DISTCLEANFILES = lstat.c stat.c
 
-EXTRA_DIST = xstat.in config.charset
+EXTRA_DIST = xstat.in config.charset ref-add.sin ref-del.sin
 lstat.c: xstat.in
 	sed \
 	  -e '/@IGNORE@/d' \
@@ -55,19 +55,43 @@ stat.c: xstat.in
 	mv $@-t $@
 
 
-# What a mess needed in order to install a simple file in $(libdir)!
+# The following is needed in order to install a simple file in $(libdir)
+# which is shared with other installed packages. We use a list of referencing
+# packages so that "make uninstall" will remove the file if and only if it
+# is not used by another installed package.
 
-all-local: charset.alias
+all-local: charset.alias ref-add.sed ref-del.sed
 
+charset_alias = $(DESTDIR)$(libdir)/charset.alias
+charset_tmp = $(DESTDIR)$(libdir)/charset.tmp
 install-exec-local: all-local
-	$(INSTALL_DATA) charset.alias $(libdir)/charset.alias
-
-# Probably not a good idea. Other packages need $(libdir)/charset.alias too.
-#uninstall-local:
-#	-rm -f $(libdir)/charset.alias
+	$(mkinstalldirs) $(DESTDIR)$(libdir)
+	test -f $(charset_alias) \
+	  && orig=$(charset_alias) \
+	  || orig=charset.alias; \
+	sed -f ref-add.sed $$orig > $(charset_tmp)
+	$(INSTALL_DATA) $(charset_tmp) $(charset_alias)
+	rm -f $(charset_tmp)
+
+uninstall-local: all-local
+	if test -f $(charset_alias); then \
+	  sed -f ref-del.sed $(charset_alias) > $(charset_tmp); \
+	  if grep '^# Packages using this file: $$' $(charset_tmp) \
+	      > /dev/null; then \
+	    rm -f $(charset_alias); \
+	  else \
+	    $(INSTALL_DATA) $(charset_tmp) $(charset_alias); \
+	  fi; \
+	  rm -f $(charset_tmp); \
+	fi
 
 charset.alias: config.charset
 	$(SHELL) $(srcdir)/config.charset '@host@' > $@-t
 	mv $@-t $@
 
-CLEANFILES = charset.alias
+SUFFIXES = .sed .sin
+.sin.sed:
+	sed -e '/^#/d' -e 's/@''PACKAGE''@/@PACKAGE@/g' $< > $@-t
+	mv $@-t $@
+
+CLEANFILES = charset.alias ref-add.sed ref-del.sed