* Do not install libraries if these have not been compiled.

	Required for Windows builds, as libraries appeared unsupported

Makefile.common

@@ -60,13 +60,17 @@ install-ada-libs:
 	for f in $(ADA_SPECS) $(ADA_BODIES); do \
 	  $(INSTALL) -m 444 $$f $(DESTDIR)$(adadir); \
 	done
+	if [ "$(ls -A libs)" ]; then \
 	for f in libs/*.ali; do \
 	  $(INSTALL) -m 444 $$f $(DESTDIR)$(alidir); \
-	done
+	done \
+	fi
 	$(INSTALL) -d $(DESTDIR)$(libdir)
+	if [ "$(ls -A libs/lib*)" ]; then \
 	for f in libs/lib*; do \
 	  $(INSTALL) -m 444 $$f $(DESTDIR)$(libdir); \
-	done
+	done \
+	fi
 
 uninstall-ada-libs:
 	rm -rf $(DESTDIR)$(adadir) $(DESTDIR)$(alidir)

src/main/Makefile.am

@@ -18,13 +18,17 @@ install-data-local: install-ada-libs
 	for f in $(ADA_SPECS) $(ADA_BODIES); do \
 	  $(INSTALL) -m 444 $$f $(DESTDIR)$(adadir); \
 	done
+	if [ "$(ls -A libs)" ]; then \
 	for f in objects/*.ali; do \
 	  $(INSTALL) -m 444 $$f $(DESTDIR)$(alidir); \
-	done
+	done \
+	fi
 	$(INSTALL) -d $(DESTDIR)$(libdir)
+	if [ "$(ls -A libs/lib*)" ]; then \
 	for f in libs/lib*; do \
 	  $(INSTALL) -m 444 $$f $(DESTDIR)$(libdir); \
-	done
+	done \
+	fi
 
 # When packaging, we remove the "Working Copy from @SVN_REVISION@"
 # from the SVN_Revision variable in ocarina-configuration.adb.in and