diff --git a/aegisub/Makefile.target b/aegisub/Makefile.target
index 0c95216e1..9794febdd 100644
--- a/aegisub/Makefile.target
+++ b/aegisub/Makefile.target
@@ -4,9 +4,13 @@
 #       * Allow variables to be overridden on the CL.
 
 .PHONY: all install clean subdirs $(SUBDIRS)
-all: subdirs $(LIB) $(LIB_SHARED) $(PROGRAM)
+all: subdirs $(PROGRAM)
 .DEFAULT_GOAL := all
 
+ifneq (no, $(BUILD_LIB))
+all: $(LIB) $(LIB_SHARED)
+endif
+
 OBJ		= $(addsuffix .o, $(basename $(SRC)))
 DEP		= $(addsuffix .d, $(basename $(SRC)))
 
diff --git a/aegisub/automation/Makefile b/aegisub/automation/Makefile
index 15b44658d..50cc2c8b1 100644
--- a/aegisub/automation/Makefile
+++ b/aegisub/automation/Makefile
@@ -2,6 +2,7 @@ include ../Makefile.inc
 
 LIB_SHARED = aegisub.so
 LIB_VERSION = 0.1.0
+BUILD_LIB = no
 
 CXXFLAGS += -I../libaegisub/include -I../src $(CXXFLAGS_WX)
 CPPFLAGS += $(CPPFLAGS_BOOST)