Use autoconf variables

Signed-off-by: Alex Gladkov <[email protected]>

data/Makefile.am

@@ -34,7 +34,7 @@ install-data-hook: $(KEYMAPDIR)_Z $(FONTDIR)_Z
 		install -d -m 755 $(DESTDIR)$(datadir)/$(KEYMAPDIR)/$$i ;\
 		install -m 644 $(KEYMAPDIR)_Z/$$i/* $(DESTDIR)$(datadir)/$(KEYMAPDIR)/$$i ;\
 	done
-	rm -f $(DESTDIR)$(datadir)/$(KEYMAPDIR)/ppc; ln -s mac $(DESTDIR)$(datadir)/$(KEYMAPDIR)/ppc
+	rm -f $(DESTDIR)$(datadir)/$(KEYMAPDIR)/ppc; $(LN_S) mac $(DESTDIR)$(datadir)/$(KEYMAPDIR)/ppc
 	@if [ -f $(DESTDIR)$(datadir)/$(OLDKEYMAPDIR) ]; then \
 	  echo "Done. You may want to remove old keymaps with" ; \
 	  echo "  rm -rf $(DESTDIR)$(datadir)/$(OLDKEYMAPDIR)" ; \

docs/reference/libkeymap/Makefile.am

@@ -7,7 +7,7 @@ htmldir = $(docdir)/html
 html_DATA = html/*
 
 $(abs_builddir)/Doxyfile: $(abs_srcdir)/Doxyfile.in
-	sed \
+	$(SED) \
 		-e 's,[@]VERSION[@],$(VERSION),g' \
 		-e 's,[@]MODULE[@],$(DOC_MODULE),g' \
 		-e 's,[@]TOPDIR[@],$(abs_top_srcdir),g' \

src/Makefile.am

@@ -90,5 +90,5 @@ LDADD = \
 install-exec-hook:
 	for i in psfaddtable psfgettable psfstriptable; do \
 		rm -f $(DESTDIR)$(bindir)/$$i; \
-		ln -s psfxtable $(DESTDIR)$(bindir)/$$i || exit $$?; \
+		$(LN_S) psfxtable $(DESTDIR)$(bindir)/$$i || exit $$?; \
 	done

src/libkeymap/Makefile.am

@@ -98,7 +98,7 @@ syms.%.h:
 	$(V_GEN_SYMS)$(GEN_SYMS) -n $*_syms -s $(call charset_start,$*) <$(call charset_trans,$*) >$(builddir)/$@
 
 %.pc: %.pc.in Makefile
-	sed \
+	$(SED) \
 	    -e 's,[@]VERSION[@],$(VERSION),g' \
 	    -e 's,[@]prefix[@],$(prefix),g' \
 	    -e 's,[@]exec_prefix[@],$(exec_prefix),g' \