Do not buffer writes larger than the buffer if possible

[apt.git] / buildlib / library.mak

diff --git a/buildlib/library.mak b/buildlib/library.mak
index 9f8b78541a4ccff54714de5303a2df3c7e8b909d..7b12384c4c34cd6c2736db4a06b8b5cf1bb83db0 100644 (file)
--- a/buildlib/library.mak
+++ b/buildlib/library.mak
@@ -5,10 +5,10 @@
 # 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 
+# $(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
-# $(DOMAIN) - The text domain for this library
+# $(APT_DOMAIN) - The text domain for this library
 
 # All output is writtin to .opic files in the build directory to
 # signify the PIC output.
@@ -16,11 +16,12 @@
 # See defaults.mak for information about LOCAL
 
 # Some local definitions
-LOCAL := lib$(LIBRARY)$(LIBEXT).so.$(MAJOR).$(MINOR)
+LOCAL := lib$(LIBRARY).so.$(MAJOR).$(MINOR)
 $(LOCAL)-OBJS := $(addprefix $(OBJ)/,$(addsuffix .opic,$(notdir $(basename $(SOURCE)))))
 $(LOCAL)-DEP := $(addprefix $(DEP)/,$(addsuffix .opic.d,$(notdir $(basename $(SOURCE)))))
 $(LOCAL)-HEADERS := $(addprefix $(INCLUDE)/,$(HEADERS))
-$(LOCAL)-SONAME := lib$(LIBRARY)$(LIBEXT).so.$(MAJOR)
+$(LOCAL)-SONAME := lib$(LIBRARY).so.$(MAJOR)
+$(LOCAL)-VERSIONSCRIPT := $(LIB)/lib$(LIBRARY)-$(MAJOR)-$(MINOR).symver
 $(LOCAL)-SLIBS := $(SLIBS)
 $(LOCAL)-LIBRARY := $(LIBRARY)
 
@@ -29,7 +30,7 @@ include $(PODOMAIN_H)
 
 # Install the command hooks
 headers: $($(LOCAL)-HEADERS)
-library: $(LIB)/lib$(LIBRARY).so $(LIB)/lib$(LIBRARY)$(LIBEXT).so.$(MAJOR)
+library: $(LIB)/lib$(LIBRARY).so $(LIB)/lib$(LIBRARY).so.$(MAJOR)
 clean: clean/$(LOCAL)
 veryclean: veryclean/$(LOCAL)
 
@@ -39,31 +40,34 @@ MKDIRS += $(OBJ) $(DEP) $(LIB) $(dir $($(LOCAL)-HEADERS))
 # The clean rules
 .PHONY: clean/$(LOCAL) veryclean/$(LOCAL)
 clean/$(LOCAL):
-       -rm -f $($(@F)-OBJS) $($(@F)-DEP)
+       -rm -f $($(@F)-OBJS) $($(@F)-DEP) $($(@F)-VERSIONSCRIPT)
 veryclean/$(LOCAL): clean/$(LOCAL)
        -rm -f $($(@F)-HEADERS) $(LIB)/lib$($(@F)-LIBRARY)*.so*
 
 # Build rules for the two symlinks
-.PHONY: $(LIB)/lib$(LIBRARY)$(LIBEXT).so.$(MAJOR) $(LIB)/lib$(LIBRARY).so
-$(LIB)/lib$(LIBRARY)$(LIBEXT).so.$(MAJOR): $(LIB)/lib$(LIBRARY)$(LIBEXT).so.$(MAJOR).$(MINOR)
+.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)$(LIBEXT).so.$(MAJOR).$(MINOR)
+$(LIB)/lib$(LIBRARY).so: $(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR)
        ln -sf $(<F) $@
 
+$($(LOCAL)-VERSIONSCRIPT):
+       echo '$(shell echo '$(LIBRARY)' | tr -d '-' | tr 'a-z' 'A-Z')_$(MAJOR) { global: *; };' > $@
+
 # The binary build rule
-$(LIB)/lib$(LIBRARY)$(LIBEXT).so.$(MAJOR).$(MINOR): $($(LOCAL)-HEADERS) $($(LOCAL)-OBJS)
+$(LIB)/lib$(LIBRARY).so.$(MAJOR).$(MINOR): $($(LOCAL)-HEADERS) $($(LOCAL)-OBJS) $(LIBRARYDEPENDS) $($(LOCAL)-VERSIONSCRIPT)
        -rm -f $(LIB)/lib$($(@F)-LIBRARY)*.so* 2> /dev/null
        echo Building shared library $@
-       $(CXX) $(CXXFLAGS) $(LDFLAGS) $(PICFLAGS) $(LFLAGS) $(LFLAGS_SO)\
+       $(CXX) $(CXXSTD) $(CXXFLAGS) $(LDFLAGS) -Wl,--version-script=$($(@F)-VERSIONSCRIPT) $(PICFLAGS) $(LFLAGS) $(LFLAGS_SO)\
           -o $@ $(SONAME_MAGIC)$($(@F)-SONAME) -shared \
           $(filter %.opic,$^) \
           $($(@F)-SLIBS) 
 
 # Compilation rules
 vpath %.cc $(SUBDIRS)
-$(OBJ)/%.opic: %.cc
+$(OBJ)/%.opic: %.cc $(LIBRARYDEPENDS)
        echo Compiling $< to $@
-       $(CXX) -c $(INLINEDEPFLAG) $(CPPFLAGS) $(CXXFLAGS) $(PICFLAGS) -o $@ $<
+       $(CXX) -c $(INLINEDEPFLAG) $(CPPFLAGS) $(CXXSTD) $(CXXFLAGS) $(PICFLAGS) -o $@ '$(abspath $<)'
        $(DoDep)
 
 # Include the dependencies that are available