jsig.make

#
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# Rules to build signal interposition library, used by vm.make

# libjsig[_g].so: signal interposition library
JSIG = jsig
LIBJSIG = lib$(JSIG).so

JSIG_G    = $(JSIG)$(G_SUFFIX)
LIBJSIG_G = lib$(JSIG_G).so

LIBJSIG_DEBUGINFO   = lib$(JSIG).debuginfo
LIBJSIG_G_DEBUGINFO = lib$(JSIG_G).debuginfo

JSIGSRCDIR = $(GAMMADIR)/src/os/$(Platform_os_family)/vm

DEST_JSIG           = $(JDK_LIBDIR)/$(LIBJSIG)
DEST_JSIG_DEBUGINFO = $(JDK_LIBDIR)/$(LIBJSIG_DEBUGINFO)

LIBJSIG_MAPFILE = $(MAKEFILES_DIR)/mapfile-vers-jsig

# On Linux we really dont want a mapfile, as this library is small 
# and preloaded using LD_PRELOAD, making functions private will 
# cause problems with interposing. See CR: 6466665
# LFLAGS_JSIG += $(MAPFLAG:FILENAME=$(LIBJSIG_MAPFILE))

LFLAGS_JSIG += -D_GNU_SOURCE -D_REENTRANT $(LDFLAGS_HASH_STYLE)

# DEBUG_BINARIES overrides everything, use full -g debug information
ifeq ($(DEBUG_BINARIES), true)
  JSIG_DEBUG_CFLAGS = -g
endif

$(LIBJSIG): $(JSIGSRCDIR)/jsig.c $(LIBJSIG_MAPFILE)
	@echo Making signal interposition lib...
	$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
                         $(LFLAGS_JSIG) $(JSIG_DEBUG_CFLAGS) -o $@ $< -ldl
	$(QUIETLY) [ -f $(LIBJSIG_G) ] || { ln -s $@ $(LIBJSIG_G); }
ifneq ($(OBJCOPY),)
	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(LIBJSIG_DEBUGINFO)
	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJSIG_DEBUGINFO) $@
  ifeq ($(STRIP_POLICY),all_strip)
	$(QUIETLY) $(STRIP) $@
  else
    ifeq ($(STRIP_POLICY),min_strip)
	$(QUIETLY) $(STRIP) -g $@
    # implied else here is no stripping at all
    endif
  endif
	[ -f $(LIBJSIG_G_DEBUGINFO) ] || { ln -s $(LIBJSIG_DEBUGINFO) $(LIBJSIG_G_DEBUGINFO); }
endif

install_jsig: $(LIBJSIG)
	@echo "Copying $(LIBJSIG) to $(DEST_JSIG)"
	$(QUIETLY) test -f $(LIBJSIG_DEBUGINFO) && \
	    cp -f $(LIBJSIG_DEBUGINFO) $(DEST_JSIG_DEBUGINFO)
	$(QUIETLY) cp -f $(LIBJSIG) $(DEST_JSIG) && echo "Done"

.PHONY: install_jsig