Split Makefile.lib into several *.mk files

mk/lib.mk

@@ -0,0 +1,52 @@
+default: all
+
+
+# Include Autoconf variables.
+Makefile.config: Makefile.config.in
+	./config.status --file $@
+
+include Makefile.config
+
+
+# Initialise some variables.
+QUIET = @
+
+
+# Pass -fPIC if we're building dynamic libraries.
+ifeq ($(BUILD_SHARED_LIBS), 1)
+  GLOBAL_CFLAGS += -fPIC
+  GLOBAL_CXXFLAGS += -fPIC
+  GLOBAL_LDFLAGS += -Wl,--no-copy-dt-needed-entries
+endif
+
+
+# Pass -g if we want debug info.
+ifeq ($(BUILD_DEBUG), 1)
+  GLOBAL_CFLAGS += -g
+  GLOBAL_CXXFLAGS += -g
+endif
+
+
+include mk/clean.mk
+include mk/dist.mk
+include mk/install.mk
+include mk/libraries.mk
+include mk/programs.mk
+include mk/patterns.mk
+
+
+# Include all sub-Makefiles.
+define include-sub-makefile =
+  d := $$(patsubst %/, %, $$(dir $(1)))
+  include $(1)
+endef
+
+$(foreach mf, $(SUBS), $(eval $(call include-sub-makefile, $(mf))))
+
+
+# Instantiate libraries and programs.
+$(foreach lib, $(LIBS), $(eval $(call build-library,$(lib))))
+$(foreach prog, $(PROGRAMS), $(eval $(call build-program,$(prog))))
+
+
+all: $(programs_list)