+ifdef LISP_FEATURE_GENCGC
+ GC_SRC = gencgc.c
+else
+ GC_SRC = cheneygc.c
+endif
+
+ifdef LISP_FEATURE_SB_THREAD
+ OS_LIBS += -lpthread
+endif
+ifdef LISP_FEATURE_SB_CORE_COMPRESSION
+ OS_LIBS += -lz
+endif
+
+# Nothing to do for after-grovel-headers.
+.PHONY: after-grovel-headers
+after-grovel-headers: