diff --git a/make/defs.mk b/make/defs.mk
index 007c5bbb..8d6d0531 100644
--- a/make/defs.mk
+++ b/make/defs.mk
@@ -215,10 +215,13 @@ BUILD_LIBDIR           = $(TOPDIR)/lib
 LIBNAME               ?= $(PROJECT)
 LIBTYPE               ?= shared
 MEMBERS               += $(LIB_A)($(OBJ))
-SHOBJS                += $(patsubst %.cpp,lib%.so,$(patsubst %.cc,lib%.so,$(patsubst %.c,lib%.so,$(SRC_ALL_CPP))))
 INSTALL_LIBDIR        ?= $(EXE_PREFIX)/lib
 VERSION_SCRIPT         = $(BUILD_LIBDIR)/version.ldscript
+# TODO: use something like this as unifying variable, there are far too many
+#       lib-related variables
+LOCAL_LIBS            +=
 ifneq ($(TARGET),mingw)
+SHOBJS                += $(patsubst %.cpp,lib%.so,$(patsubst %.cc,lib%.so,$(patsubst %.c,lib%.so,$(SRC_ALL_CPP))))
 LIB_A                  = $(BUILD_LIBDIR)/lib$(LIBNAME).a
 SO_SUFFIX              = so.$(shell echo $(VERSION) | cut -d- -f1)
 LIB_SO                 = $(BUILD_LIBDIR)/lib$(LIBNAME).$(SO_SUFFIX)
@@ -236,9 +239,11 @@ LIB_SO                 = $(BUILD_LIBDIR)/$(LIBNAME).dll
 INSTALLED_LIB_SO       = $(INSTALL_LIBDIR)/$(LIBNAME).$(SO_SUFFIX)
 INSTALLED_LIB_A        = $(INSTALL_LIBDIR)/lib$(LIBNAME).a
 endif
+INSTALLED_LIB         += $(addprefix $(INSTALL_LIBDIR)/,$(LOCAL_LIBS))
+BUILD_LIB             += $(addprefix $(BUILD_LIBDIR)/,$(LOCAL_LIBS))
 INSTALLED_SHOBJS      += $(addprefix $(INSTALL_LIBDIR)/,$(SHOBJS))
 INSTALLED_ALL_LIBS     = $(addprefix $(INSTALL_LIBDIR)/,$(wildcard *.a))
-INSTALLED_LIB          = $(INSTALLED_LIB_SO) $(INSTALLED_SHOBJS) \
+INSTALLED_LIB         += $(INSTALLED_LIB_SO) $(INSTALLED_SHOBJS) \
 	$(INSTALLED_LINKS_SO) $(sort $(INSTALLED_LIB_A) $(INSTALLED_ALL_LIBS)) \
 	$(INSTALLED_DEF)
 BUILD_LIB             += $(LIB_SO)