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 # $(APT_DOMAIN) - The text domain for this library
  12
  13 # All output is writtin to .opic files in the build directory to
  14 # signify the PIC output.
  15
  16 # See defaults.mak for information about LOCAL
  17
  18 # Some local definitions
  19 LOCAL := lib$(LIBRARY).so.$(MAJOR).$(MINOR)
  20 $(LOCAL)-OBJS := $(addprefix $(OBJ)/,$(addsuffix .opic,$(notdir $(basename $(SOURCE)))))
  21 $(LOCAL)-DEP := $(addprefix $(DEP)/,$(addsuffix .opic.d,$(notdir $(basename $(SOURCE)))))
  22 $(LOCAL)-HEADERS := $(addprefix $(INCLUDE)/,$(HEADERS))
  23 $(LOCAL)-SONAME := lib$(LIBRARY).so.$(MAJOR)
  24 $(LOCAL)-VERSIONSCRIPT := $(LIB)/lib$(LIBRARY)-$(MAJOR)-$(MINOR).symver
  25 $(LOCAL)-SLIBS := $(SLIBS)
  26 $(LOCAL)-LIBRARY := $(LIBRARY)
  27
  28 TYPE = src
  29 include $(PODOMAIN_H)
  30
  31 # Install the command hooks
  32 headers: $($(LOCAL)-HEADERS)
  33 library: $(LIB)/lib$(LIBRARY).so $(LIB)/lib$(LIBRARY).so.$(MAJOR)
  34 clean: clean/$(LOCAL)
  35 veryclean: veryclean/$(LOCAL)
  36
  37 # Make Directories
  38 MKDIRS += $(OBJ) $(DEP) $(LIB) $(dir $($(LOCAL)-HEADERS))
  39
  40 # The clean rules
  41 .PHONY: clean/$(LOCAL) veryclean/$(LOCAL)
  42 clean/$(LOCAL):
  43         -rm -f $($(@F)-OBJS) $($(@F)-DEP) $($(@F)-VERSIONSCRIPT)
  44 veryclean/$(LOCAL): clean/$(LOCAL)
  45         -rm -f $($(@F)-HEADERS) $(LIB)/lib$($(@F)-LIBRARY)*.so*
  46
  47 # Build rules for the two symlinks
  48 .PHONY: $(LIB)/lib$(LIBRARY).so.$(MAJOR) $(LIB)/lib$(LIBRARY).so
  49 $(LIB)/lib$(LIBRARY).so.$(MAJOR): $(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR)
  50         ln -sf $(<F) $@
  51 $(LIB)/lib$(LIBRARY).so: $(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR)
  52         ln -sf $(<F) $@
  53
  54 $($(LOCAL)-VERSIONSCRIPT):
  55         echo '$(shell echo '$(LIBRARY)' | tr -d '-' | tr 'a-z' 'A-Z')_$(MAJOR) { global: *; };' > $@
  56
  57 # The binary build rule
  58 $(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR): $($(LOCAL)-HEADERS) $($(LOCAL)-OBJS) $(LIBRARYDEPENDS) $($(LOCAL)-VERSIONSCRIPT)
  59         -rm -f $(LIB)/lib$($(@F)-LIBRARY)*.so* 2> /dev/null
  60         echo Building shared library $@
  61         $(CXX) $(CXXFLAGS) $(LDFLAGS) -Wl,--version-script=$($(@F)-VERSIONSCRIPT) $(PICFLAGS) $(LFLAGS) $(LFLAGS_SO)\
  62            -o $@ $(SONAME_MAGIC)$($(@F)-SONAME) -shared \
  63            $(filter %.opic,$^) \
  64            $($(@F)-SLIBS)
  65
  66 # Compilation rules
  67 vpath %.cc $(SUBDIRS)
  68 $(OBJ)/%.opic: %.cc $(LIBRARYDEPENDS)
  69         echo Compiling $< to $@
  70         $(CXX) -c $(INLINEDEPFLAG) $(CPPFLAGS) $(CXXFLAGS) $(PICFLAGS) -o $@ $(abspath $<)
  71         $(DoDep)
  72
  73 # Include the dependencies that are available
  74 The_DFiles = $(wildcard $($(LOCAL)-DEP))
  75 ifneq ($(words $(The_DFiles)),0)
  76 include $(The_DFiles)
  77 endif