how to install OpenJDK stuff for packaging - DESTDIR support

[Petr Sumbera]

Hi all,

I'm now able to build both OpenJDK 10 and 11 (thanks to all who helped 
me!). Now what is the correct way to install it for packaging? For now I 
use following patch (see below). But I wonder how should this be done 
properly.

Thanks,

Petr

--- jdk/make/Install.gmk
+++ jdk/make/Install.gmk
@@ -35,9 +35,9 @@
  install:
         echo Installing jdk image into $(INSTALL_PREFIX)/jvm/$(INSTALLDIR)
         echo and creating $(words $(BINARIES)) links from 
$(INSTALL_PREFIX)/bin into the jdk.
-       $(MKDIR) -p $(INSTALL_PREFIX)/jvm/$(INSTALLDIR)
-       $(RM) -r $(INSTALL_PREFIX)/jvm/$(INSTALLDIR)/*
-       $(CP) -rp $(JDK_IMAGE_DIR)/* $(INSTALL_PREFIX)/jvm/$(INSTALLDIR)
-       $(MKDIR) -p $(INSTALL_PREFIX)/bin
-       $(RM) $(addprefix $(INSTALL_PREFIX)/bin/, $(BINARIES))
-       $(foreach b, $(BINARIES), $(LN) -s 
$(INSTALL_PREFIX)/jvm/$(INSTALLDIR)/bin/$b $(INSTALL_PREFIX)/bin/$b &&) true
+       $(MKDIR) -p $(DESTDIR)$(INSTALL_PREFIX)/jvm/$(INSTALLDIR)
+       $(RM) -r  $(DESTDIR)$(INSTALL_PREFIX)/jvm/$(INSTALLDIR)/*
+       $(CP) -rp  $(JDK_IMAGE_DIR)/* 
$(DESTDIR)$(INSTALL_PREFIX)/jvm/$(INSTALLDIR)
+       $(MKDIR) -p  $(DESTDIR)$(INSTALL_PREFIX)/bin
+       $(RM) $(addprefix  $(DESTDIR)$(INSTALL_PREFIX)/bin/, $(BINARIES))
+       $(foreach b, $(BINARIES), $(LN) -s 
$(INSTALL_PREFIX)/jvm/$(INSTALLDIR)/bin/$b 
$(DESTDIR)$(INSTALL_PREFIX)/bin/$b &&) true