diff --git a/Makefile b/Makefile
index 5db406f0..344daaf0 100644
--- a/Makefile
+++ b/Makefile
@@ -63,6 +63,9 @@ $(foreach B,$(BUILD_ITEMS),$(eval \
 %.mk: ;
 make/%.mk: ;
 
+#XXX
+##BUILDRULES := libtool
+BUILDRULES := gcc
 include make/rules.mk
 
 DUMMY := $(shell mkdir $(foreach B,$(BUILD_ITEMS),$(B)/$(OUTPUT_DIR)) 2>/dev/null)
diff --git a/examples/build.mk b/examples/build.mk
index 66c498e1..41053798 100644
--- a/examples/build.mk
+++ b/examples/build.mk
@@ -1,7 +1,7 @@
 BINS_examples = pdf-bookmarks pdf-mod-info pdf-npages
 CBINS_examples = pdf-linearize
 
-TARGETS_examples = $(foreach B,$(BINS_examples) $(CBINS_examples),examples/$(OUTPUT_DIR)/$(B))
+TARGETS_examples = $(foreach B,$(BINS_examples) $(CBINS_examples),examples/$(OUTPUT_DIR)/$(call binname,$(B)))
 
 $(TARGETS_examples): $(TARGETS_qpdf)
 
@@ -22,13 +22,13 @@ ifeq ($(GENDEPS),1)
 endif
 
 $(foreach B,$(BINS_examples),$(eval \
-  $(OBJS_$(B)): examples/$(OUTPUT_DIR)/%.o: examples/$(B).cc ; \
+  $(OBJS_$(B)): examples/$(OUTPUT_DIR)/%.$(OBJ): examples/$(B).cc ; \
 	$(call compile,examples/$(B).cc,$(INCLUDES_examples))))
 
 $(foreach B,$(CBINS_examples),$(eval \
-  $(OBJS_$(B)): examples/$(OUTPUT_DIR)/%.o: examples/$(B).c ; \
+  $(OBJS_$(B)): examples/$(OUTPUT_DIR)/%.$(OBJ): examples/$(B).c ; \
 	$(call c_compile,examples/$(B).c,$(INCLUDES_examples))))
 
 $(foreach B,$(BINS_examples) $(CBINS_examples),$(eval \
-  examples/$(OUTPUT_DIR)/$(B): $(OBJS_$(B)) ; \
+  examples/$(OUTPUT_DIR)/$(call binname,$(B)): $(OBJS_$(B)) ; \
 	$(call makebin,$(OBJS_$(B)),$$@)))
diff --git a/libqpdf/build.mk b/libqpdf/build.mk
index da87b7db..df1227df 100644
--- a/libqpdf/build.mk
+++ b/libqpdf/build.mk
@@ -1,5 +1,5 @@
 TARGETS_libqpdf = \
-	libqpdf/$(OUTPUT_DIR)/libqpdf.la
+	$(foreach L,$(call libname,qpdf),libqpdf/$(OUTPUT_DIR)/$(L))
 
 INCLUDES_libqpdf = include libqpdf
 
@@ -54,7 +54,7 @@ ifeq ($(GENDEPS),1)
 -include $(call lobj_to_dep,$(OBJS_libqpdf))
 endif
 
-$(OBJS_libqpdf): libqpdf/$(OUTPUT_DIR)/%.lo: libqpdf/%.cc
+$(OBJS_libqpdf): libqpdf/$(OUTPUT_DIR)/%.$(LOBJ): libqpdf/%.cc
 	$(call libcompile,$<,$(INCLUDES_libqpdf))
 
 # Last three arguments to makelib are CURRENT,REVISION,AGE.
@@ -68,6 +68,5 @@ $(OBJS_libqpdf): libqpdf/$(OUTPUT_DIR)/%.lo: libqpdf/%.cc
 #
 # * Otherwise, increment REVISION
 
-libqpdf/$(OUTPUT_DIR)/libqpdf.la: $(OBJS_libqpdf)
+$(TARGETS_libqpdf): $(OBJS_libqpdf)
 	$(call makelib,$(OBJS_libqpdf),$@,3,0,0)
-
diff --git a/libtests/build.mk b/libtests/build.mk
index 4e2fe9be..b3cbd673 100644
--- a/libtests/build.mk
+++ b/libtests/build.mk
@@ -12,7 +12,7 @@ BINS_libtests = \
 	qutil \
 	rc4
 
-TARGETS_libtests = $(foreach B,$(BINS_libtests),libtests/$(OUTPUT_DIR)/$(B))
+TARGETS_libtests = $(foreach B,$(BINS_libtests),libtests/$(OUTPUT_DIR)/$(call binname,$(B)))
 
 $(TARGETS_libtests): $(TARGETS_libqpdf)
 
@@ -31,9 +31,9 @@ ifeq ($(GENDEPS),1)
 endif
 
 $(foreach B,$(BINS_libtests),$(eval \
-  $(OBJS_$(B)): libtests/$(OUTPUT_DIR)/%.o: libtests/$(B).cc ; \
+  $(OBJS_$(B)): libtests/$(OUTPUT_DIR)/%.$(OBJ): libtests/$(B).cc ; \
 	$(call compile,libtests/$(B).cc,$(INCLUDES_libtests))))
 
 $(foreach B,$(BINS_libtests),$(eval \
-  libtests/$(OUTPUT_DIR)/$(B): $(OBJS_$(B)) ; \
+  libtests/$(OUTPUT_DIR)/$(call binname,$(B)): $(OBJS_$(B)) ; \
 	$(call makebin,$(OBJS_$(B)),$$@)))
diff --git a/make/gcc-linux.mk b/make/gcc-linux.mk
new file mode 100644
index 00000000..41978402
--- /dev/null
+++ b/make/gcc-linux.mk
@@ -0,0 +1,67 @@
+# --- Required interface definitions ---
+
+OBJ=o
+LOBJ=o
+
+# Usage: $(call libname,base)
+define libname
+lib$(1).a lib$(1).so
+endef
+
+# Usage: $(call binname,base)
+define binname
+$(1)
+endef
+
+# --- Required rule definitions ---
+
+#                       1   2
+# Usage: $(call compile,src,includes)
+define compile
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) \
+		$(call depflags,$(basename $(call src_to_obj,$(1)))) \
+		$(foreach I,$(2),-I$(I)) \
+		-c $(1) -o $(call src_to_obj,$(1))
+endef
+
+#                       1   2
+# Usage: $(call c_compile,src,includes)
+define c_compile
+	$(CC) $(CPPFLAGS) $(CFLAGS) \
+		$(call depflags,$(basename $(call src_to_obj,$(1)))) \
+		$(foreach I,$(2),-I$(I)) \
+		-c $(1) -o $(call c_src_to_obj,$(1))
+endef
+
+define libcompile
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -fpic \
+		$(call depflags,$(basename $(call src_to_obj,$(1)))) \
+		$(foreach I,$(2),-I$(I)) \
+		-c $(1) -o $(call src_to_obj,$(1))
+endef
+
+
+#                       1    2       3       4        5
+# Usage: $(call makelib,objs,library,current,revision,age)
+define makelib
+	$(RM) $2
+	if [ "$(findstring .a,$(2))" = ".a" ]; then \
+		ar cru $(2) $(1); \
+		ranlib $(2); \
+	else \
+		major=$$(( $(3) - $(5))); \
+	  	versuffix=$$major.$5.$4; \
+		$(CXX) $(CXXFLAGS) -shared -o $(2).$$versuffix $(1) \
+			-Wl,--soname -Wl,`basename $(2)`.$$major \
+			$(LDFLAGS) $(LIBS); \
+		ln -s `basename $(2)`.$$versuffix $(2); \
+		ln -s `basename $(2)`.$$versuffix $(2).$$major; \
+	fi
+endef
+
+#                       1    2
+# Usage: $(call makebin,objs,binary)
+define makebin
+	$(CXX) $(CXXFLAGS) $(1) -o $(2) $(LDFLAGS) \
+		-Llibqpdf/$(OUTPUT_DIR) -lqpdf $(LIBS)
+endef
diff --git a/make/libtool.mk b/make/libtool.mk
new file mode 100644
index 00000000..3287d5aa
--- /dev/null
+++ b/make/libtool.mk
@@ -0,0 +1,74 @@
+# --- Required interface definitions ---
+
+OBJ=o
+LOBJ=lo
+
+# Usage: $(call libname,base)
+define libname
+lib$(1).la
+endef
+
+# Usage: $(call binname,base)
+define binname
+$(1)
+endef
+
+# --- Private definitions ---
+
+# Usage: $(call libdepflags,$(basename obj))
+# Usage: $(call fixdeps,$(basename obj))
+ifeq ($(GENDEPS),1)
+libdepflags=-MD -MF $(1).tdep -MP
+fixdeps=sed -e 's/\.o:/.lo:/' < $(1).tdep > $(1).dep
+
+else
+libdepflags=
+fixdeps=
+endif
+
+# --- Required rule definitions ---
+
+#                       1   2
+# Usage: $(call compile,src,includes)
+define compile
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) \
+		$(call depflags,$(basename $(call src_to_obj,$(1)))) \
+		$(foreach I,$(2),-I$(I)) \
+		-c $(1) -o $(call src_to_obj,$(1))
+endef
+
+#                       1   2
+# Usage: $(call c_compile,src,includes)
+define c_compile
+	$(CC) $(CPPFLAGS) $(CFLAGS) \
+		$(call depflags,$(basename $(call src_to_obj,$(1)))) \
+		$(foreach I,$(2),-I$(I)) \
+		-c $(1) -o $(call c_src_to_obj,$(1))
+endef
+
+#                          1   2
+# Usage: $(call libcompile,src,includes)
+define libcompile
+	$(LIBTOOL) --quiet --mode=compile \
+		$(CXX) $(CPPFLAGS) $(CXXFLAGS) \
+		$(call libdepflags,$(basename $(call src_to_obj,$(1)))) \
+		$(foreach I,$(2),-I$(I)) \
+		-c $(1) -o $(call src_to_obj,$(1)); \
+	$(call fixdeps,$(basename $(call src_to_obj,$(1))))
+endef
+
+#                       1    2       3       4        5
+# Usage: $(call makelib,objs,library,current,revision,age)
+define makelib
+	$(LIBTOOL) --mode=link \
+		$(CXX) $(CXXFLAGS) -o $(2) $(1) $(LDFLAGS) $(LIBS) \
+		 -rpath $(libdir) -version-info $(3):$(4):$(5)
+endef
+
+#                       1    2
+# Usage: $(call makebin,objs,binary)
+define makebin
+	$(LIBTOOL) --mode=link \
+		$(CXX) $(CXXFLAGS) $(1) -o $(2) $(LDFLAGS) \
+		-Llibqpdf/$(OUTPUT_DIR) -lqpdf $(LIBS)
+endef
diff --git a/make/rules.mk b/make/rules.mk
index 01b6f2f2..a55087b5 100644
--- a/make/rules.mk
+++ b/make/rules.mk
@@ -1,27 +1,28 @@
+include make/$(BUILDRULES).mk
 
 # Usage: $(call src_to_obj,srcs)
 define src_to_obj
-$(foreach F,$(1),$(dir $(F))$(OUTPUT_DIR)/$(patsubst %.cc,%.o,$(notdir $(F))))
+$(foreach F,$(1),$(dir $(F))$(OUTPUT_DIR)/$(patsubst %.cc,%.$(OBJ),$(notdir $(F))))
 endef
 
 # Usage: $(call c_src_to_obj,srcs)
 define c_src_to_obj
-$(foreach F,$(1),$(dir $(F))$(OUTPUT_DIR)/$(patsubst %.c,%.o,$(notdir $(F))))
+$(foreach F,$(1),$(dir $(F))$(OUTPUT_DIR)/$(patsubst %.c,%.$(OBJ),$(notdir $(F))))
 endef
 
 # Usage: $(call src_to_lobj,srcs)
 define src_to_lobj
-$(foreach F,$(1),$(dir $(F))$(OUTPUT_DIR)/$(patsubst %.cc,%.lo,$(notdir $(F))))
+$(foreach F,$(1),$(dir $(F))$(OUTPUT_DIR)/$(patsubst %.cc,%.$(LOBJ),$(notdir $(F))))
 endef
 
 # Usage: $(call obj_to_dep,objs)
 define obj_to_dep
-$(patsubst %.o,%.dep,$(1))
+$(patsubst %.$(OBJ),%.dep,$(1))
 endef
 
 # Usage: $(call lobj_to_dep,objs)
 define lobj_to_dep
-$(patsubst %.lo,%.dep,$(1))
+$(patsubst %.$(LOBJ),%.dep,$(1))
 endef
 
 # Usage: $(call depflags,$(basename obj))
@@ -30,60 +31,3 @@ depflags=-MD -MF $(1).dep -MP
 else
 depflags=
 endif
-
-# Usage: $(call libdepflags,$(basename obj))
-# Usage: $(call fixdeps,$(basename obj))
-ifeq ($(GENDEPS),1)
-libdepflags=-MD -MF $(1).tdep -MP
-fixdeps=sed -e 's/\.o:/.lo:/' < $(1).tdep > $(1).dep
-
-else
-libdepflags=
-fixdeps=
-endif
-
-#                       1   2
-# Usage: $(call compile,src,includes)
-define compile
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) \
-		$(call depflags,$(basename $(call src_to_obj,$(1)))) \
-		$(foreach I,$(2),-I$(I)) \
-		-c $(1) -o $(call src_to_obj,$(1))
-endef
-
-#                       1   2
-# Usage: $(call c_compile,src,includes)
-define c_compile
-	$(CC) $(CPPFLAGS) $(CFLAGS) \
-		$(call depflags,$(basename $(call src_to_obj,$(1)))) \
-		$(foreach I,$(2),-I$(I)) \
-		-c $(1) -o $(call c_src_to_obj,$(1))
-endef
-
-#                          1   2
-# Usage: $(call libcompile,src,includes)
-define libcompile
-	$(LIBTOOL) --quiet --mode=compile \
-		$(CXX) $(CPPFLAGS) $(CXXFLAGS) \
-		$(call libdepflags,$(basename $(call src_to_obj,$(1)))) \
-		$(foreach I,$(2),-I$(I)) \
-		-c $(1) -o $(call src_to_obj,$(1)); \
-	$(call fixdeps,$(basename $(call src_to_obj,$(1))))
-endef
-
-#                       1    2       3       4        5
-# Usage: $(call makelib,objs,library,current,revision,age)
-define makelib
-	$(LIBTOOL) --mode=link \
-		$(CXX) $(CXXFLAGS) -o $(2) $(1) $(LDFLAGS) $(LIBS) \
-		 -rpath $(libdir) -version-info $(3):$(4):$(5)
-endef
-
-#                       1    2
-# Usage: $(call makebin,objs,binary)
-define makebin
-	$(LIBTOOL) --mode=link \
-		$(CXX) $(CXXFLAGS) $(1) -o $(2) $(LDFLAGS) \
-		-Llibqpdf/$(OUTPUT_DIR) -lqpdf $(LIBS)
-endef
-
diff --git a/qpdf/build.mk b/qpdf/build.mk
index 6e748c26..bf9e6e51 100644
--- a/qpdf/build.mk
+++ b/qpdf/build.mk
@@ -1,7 +1,7 @@
 BINS_qpdf = qpdf test_driver
 CBINS_qpdf = qpdf-ctest
 
-TARGETS_qpdf = $(foreach B,$(BINS_qpdf) $(CBINS_qpdf),qpdf/$(OUTPUT_DIR)/$(B))
+TARGETS_qpdf = $(foreach B,$(BINS_qpdf) $(CBINS_qpdf),qpdf/$(OUTPUT_DIR)/$(call binname,$(B)))
 
 $(TARGETS_qpdf): $(TARGETS_libqpdf)
 
@@ -21,13 +21,13 @@ ifeq ($(GENDEPS),1)
 endif
 
 $(foreach B,$(BINS_qpdf),$(eval \
-  $(OBJS_$(B)): qpdf/$(OUTPUT_DIR)/%.o: qpdf/$(B).cc ; \
+  $(OBJS_$(B)): qpdf/$(OUTPUT_DIR)/%.$(OBJ): qpdf/$(B).cc ; \
 	$(call compile,qpdf/$(B).cc,$(INCLUDES_qpdf))))
 
 $(foreach B,$(CBINS_qpdf),$(eval \
-  $(OBJS_$(B)): qpdf/$(OUTPUT_DIR)/%.o: qpdf/$(B).c ; \
+  $(OBJS_$(B)): qpdf/$(OUTPUT_DIR)/%.$(OBJ): qpdf/$(B).c ; \
 	$(call c_compile,qpdf/$(B).c,$(INCLUDES_qpdf))))
 
 $(foreach B,$(BINS_qpdf) $(CBINS_qpdf),$(eval \
-  qpdf/$(OUTPUT_DIR)/$(B): $(OBJS_$(B)) ; \
+  qpdf/$(OUTPUT_DIR)/$(call binname,$(B)): $(OBJS_$(B)) ; \
 	$(call makebin,$(OBJS_$(B)),$$@)))
diff --git a/zlib-flate/build.mk b/zlib-flate/build.mk
index 57d2c98c..341195ae 100644
--- a/zlib-flate/build.mk
+++ b/zlib-flate/build.mk
@@ -1,5 +1,5 @@
 TARGETS_zlib-flate = \
-	zlib-flate/$(OUTPUT_DIR)/zlib-flate
+	zlib-flate/$(OUTPUT_DIR)/$(call binname,zlib-flate)
 
 $(TARGETS_zlib-flate): $(TARGETS_libqpdf)
 
@@ -18,5 +18,5 @@ endif
 $(OBJS_zlib-flate): zlib-flate/$(OUTPUT_DIR)/%.o: zlib-flate/%.cc
 	$(call compile,$<,$(INCLUDES_zlib-flate))
 
-zlib-flate/$(OUTPUT_DIR)/zlib-flate: $(OBJS_zlib-flate)
+zlib-flate/$(OUTPUT_DIR)/$(call binname,zlib-flate): $(OBJS_zlib-flate)
 	$(call makebin,$(OBJS_zlib-flate),$@)