stop installing empty .so files

Closes #4468

Author: thestinger

mk/install.mk

@@ -113,11 +113,6 @@ install-host: $(CSREQ$(ISTAGE)_T_$(CFG_BUILD_TRIPLE)_H_$(CFG_BUILD_TRIPLE))
 	$(Q)$(call INSTALL,$(HB2),$(PHB),rustdoc$(X_$(CFG_BUILD_TRIPLE)))
 	$(Q)$(call INSTALL,$(HB2),$(PHB),rusti$(X_$(CFG_BUILD_TRIPLE)))
 	$(Q)$(call INSTALL,$(HB2),$(PHB),rust$(X_$(CFG_BUILD_TRIPLE)))
-	$(Q)$(call INSTALL,$(HL),$(PHL),$(CFG_LIBRUSTC_$(CFG_BUILD_TRIPLE)))
-	$(Q)$(call INSTALL,$(HL),$(PHL),$(CFG_LIBRUSTPKG_$(CFG_BUILD_TRIPLE)))
-	$(Q)$(call INSTALL,$(HL),$(PHL),$(CFG_LIBRUSTDOC_$(CFG_BUILD_TRIPLE)))
-	$(Q)$(call INSTALL,$(HL),$(PHL),$(CFG_LIBRUSTI_$(CFG_BUILD_TRIPLE)))
-	$(Q)$(call INSTALL,$(HL),$(PHL),$(CFG_LIBRUST_$(CFG_BUILD_TRIPLE)))
 	$(Q)$(call INSTALL_LIB,$(HL),$(PHL),$(CORELIB_GLOB_$(CFG_BUILD_TRIPLE)))
 	$(Q)$(call INSTALL_LIB,$(HL),$(PHL),$(STDLIB_GLOB_$(CFG_BUILD_TRIPLE)))
 	$(Q)$(call INSTALL_LIB,$(HL),$(PHL),$(LIBRUSTC_GLOB_$(CFG_BUILD_TRIPLE)))
@@ -142,11 +137,6 @@ uninstall:
 	$(Q)rm -f $(PHB)/rust$(X_$(CFG_BUILD_TRIPLE))
 	$(Q)rm -f $(PHB)/rustdoc$(X_$(CFG_BUILD_TRIPLE))
 	$(Q)rm -f $(PHL)/$(CFG_RUSTLLVM_$(CFG_BUILD_TRIPLE))
-	$(Q)rm -f $(PHL)/$(CFG_LIBRUSTPKG_$(CFG_BUILD_TRIPLE))
-	$(Q)rm -f $(PHL)/$(CFG_LIBRUSTC_$(CFG_BUILD_TRIPLE))
-	$(Q)rm -f $(PHL)/$(CFG_LIBRUSTDOC_$(CFG_BUILD_TRIPLE))
-	$(Q)rm -f $(PHL)/$(CFG_LIBRUSTI_$(CFG_BUILD_TRIPLE))
-	$(Q)rm -f $(PHL)/$(CFG_LIBRUST_$(CFG_BUILD_TRIPLE))
 	$(Q)rm -f $(PHL)/$(CFG_RUNTIME_$(CFG_BUILD_TRIPLE))
 	$(Q)for i in \
           $(call HOST_LIB_FROM_HL_GLOB,$(CORELIB_GLOB_$(CFG_BUILD_TRIPLE))) \