buildlib/library.mak

   1 # -*- make -*-
   2
   3 # This creates a shared library.
   4
   5 # Input
   6 # $(SOURCE) - The source code to use
   7 # $(HEADERS) - Exported header files and private header files
   8 # $(LIBRARY) - The name of the library without lib or .so
   9 # $(MAJOR) - The major version number of this library
  10 # $(MINOR) - The minor version number of this library
  11
  12 # All output is writtin to .opic files in the build directory to
  13 # signify the PIC output.
  14
  15 # See defaults.mak for information about LOCAL
  16
  17 # Some local definitions
  18 LOCAL := lib$(LIBRARY).so.$(MAJOR).$(MINOR)
  19 $(LOCAL)-OBJS := $(addprefix $(OBJ)/,$(addsuffix .opic,$(notdir $(basename $(SOURCE)))))
  20 $(LOCAL)-DEP := $(addprefix $(DEP)/,$(addsuffix .opic.d,$(notdir $(basename $(SOURCE)))))
  21 $(LOCAL)-HEADERS := $(addprefix $(INCLUDE)/,$(HEADERS))
  22 $(LOCAL)-SONAME := lib$(LIBRARY).so.$(MAJOR)
  23 $(LOCAL)-SLIBS := $(SLIBS)
  24 $(LOCAL)-LIBRARY := $(LIBARARY)
  25
  26 # Install the command hooks
  27 headers: $($(LOCAL)-HEADERS)
  28 library: $(LIB)/lib$(LIBRARY).so $(LIB)/lib$(LIBRARY).so.$(MAJOR)
  29 clean: clean/$(LOCAL)
  30 veryclean: veryclean/$(LOCAL)
  31
  32 # The clean rules
  33 .PHONY: clean/$(LOCAL) veryclean/$(LOCAL)
  34 clean/$(LOCAL):
  35         -rm -f $($(@F)-OBJS) $($(@F)-DEP)
  36 veryclean/$(LOCAL): clean/$(LOCAL)
  37         -rm -f $($(@F)-HEADERS) $(LIB)/lib$($(@F)-LIBRARY).so*
  38
  39 # Build rules for the two symlinks
  40 .PHONY: $(LIB)/lib$(LIBRARY).so.$(MAJOR) $(LIB)/lib$(LIBRARY).so
  41 $(LIB)/lib$(LIBRARY).so.$(MAJOR): $(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR)
  42         ln -sf $(<F) $@
  43 $(LIB)/lib$(LIBRARY).so: $(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR)
  44         ln -sf $(<F) $@
  45
  46 # The binary build rule
  47 $(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR): $($(LOCAL)-HEADERS) $($(LOCAL)-OBJS)
  48         echo Building shared library $@
  49         $(CXX) $(CXXFLAGS) $(LDFLAGS) $(PICFLAGS) $(LFLAGS) -o $@ \
  50            -Wl,-soname -Wl,$($(@F)-SONAME) -shared $(filter %.opic,$^) \
  51            $($(@F)-SLIBS)
  52
  53 # Compilation rules
  54 vpath %.cc $(SUBDIRS)
  55 $(OBJ)/%.opic: %.cc
  56         echo Compiling $< to $@
  57         $(CXX) -c $(INLINEDEPFLAG) $(CPPFLAGS) $(CXXFLAGS) $(PICFLAGS) -o $@ $<
  58         $(DoDep)
  59
  60 # Include the dependencies that are available
  61 The_DFiles = $(wildcard $($(LOCAL)-DEP))
  62 ifneq ($(words $(The_DFiles)),0)
  63 include $(The_DFiles)
  64 endif