1 files changed, 61 insertions, 0 deletions
diff --git a/buildlib/library.mak b/buildlib/library.mak
new file mode 100644
index 000000000..1b814875f
--- /dev/null
+++ b/buildlib/library.mak
@@ -0,0 +1,61 @@
+# -*- make -*-
+
+# This creates a shared library.
+
+# Input
+# $(SOURCE) - The source code to use
+# $(HEADERS) - Exported header files and private header files
+# $(LIBRARY) - The name of the library without lib or .so 
+# $(MAJOR) - The major version number of this library
+# $(MINOR) - The minor version number of this library
+
+# All output is writtin to .opic files in the build directory to
+# signify the PIC output.
+
+# See defaults.mak for information about LOCAL
+
+# Some local definitions
+LOCAL := lib$(LIBRARY).so.$(MAJOR).$(MINOR)
+$(LOCAL)-OBJS := $(addprefix $(OBJ)/,$(addsuffix .opic,$(notdir $(basename $(SOURCE)))))
+$(LOCAL)-DEP := $(addprefix $(DEP)/,$(addsuffix .d,$(notdir $(basename $(SOURCE)))))
+$(LOCAL)-HEADERS := $(addprefix $(INCLUDE)/,$(HEADERS))
+$(LOCAL)-SONAME := lib$(LIBRARY).so.$(MAJOR)
+
+# Install the command hooks
+headers: $($(LOCAL)-HEADERS)
+library: $(LIB)/lib$(LIBRARY).so $(LIB)/lib$(LIBRARY).so.$(MAJOR)
+clean: clean/$(LOCAL)
+veryclean: veryclean/$(LOCAL)
+
+# The clean rules
+.PHONY: clean/$(LOCAL) veryclean/$(LOCAL)
+clean/$(LOCAL):
+	-rm -f $($(@F)-OBJS) $($(@F)-DEP)
+veryclean/$(LOCAL): clean/$(LOCAL)
+	-rm -f $($(@F)-HEADERS) $(LIB)/lib$(LIBRARY).so*
+
+# Build rules for the two symlinks
+.PHONY: $(LIB)/lib$(LIBRARY).so.$(MAJOR) $(LIB)/lib$(LIBRARY).so
+$(LIB)/lib$(LIBRARY).so.$(MAJOR): $(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR)
+	ln -sf $(<F) $@
+$(LIB)/lib$(LIBRARY).so: $(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR)
+	ln -sf $(<F) $@
+	
+# The binary build rule
+$(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR): $($(LOCAL)-HEADERS) $($(LOCAL)-OBJS)
+	echo Building shared library $@
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(PICFLAGS) $(LFLAGS) -o $@ \
+	   -Wl,-soname -Wl,$($(@F)-SONAME) -shared $(filter %.opic,$^)
+
+# Compilation rules
+vpath %.cc $(SUBDIRS)
+$(OBJ)/%.opic: %.cc
+	echo Compiling $< to $@
+	$(CXX) -c $(INLINEDEPFLAG) $(CPPFLAGS) $(CXXFLAGS) $(PICFLAGS) -o $@ $<
+	$(DoDep)
+
+# Include the dependencies that are available
+The_DFiles = $(wildcard $($(LOCAL)-DEP))
+ifneq ($(words $(The_DFiles)),0)
+include $(The_DFiles)
+endif