Re: [JAVA,libtool] Big libjava is biiiig.

[Dave Korn <dave.korn.cygwin@googlemail.com>]

Andrew Haley wrote:

> Did you try my list of things to lift out?  I don't think there will be any
> interdependencies; the only problem might be that the reduction is not enough.

    Hi Andrew,

  I've had a quick hack at it now, and it's not doing what I'd hoped, so
possibly I've misunderstood what you intended, or am not grokking the
structure of java packages correctly.

  If I got the essence of your list right, you were indicating all the
packages that collectively amount to $(bc_objects) in the libjava makefile, yes?

  I tried adding libtool definitions to build a libjava-core which should if
I've got it right be exactly the same as libjava, but exclude the
$(bc_objects), and a libjava-noncore that only links in the $(bc_objects).  So
I've got these definitions in Makefile.am, immediately after all the
corresponding default libgcj_la_XXXX definitions:

-----------------------------<snip>-----------------------------
if BUILD_SUBLIBS
toolexeclib_LTLIBRARIES += libgcj-core.la libgcj-noncore.la
endif
-----------------------------<snip>
if BUILD_SUBLIBS
libgcj_core_la_SOURCES = $(libgcj_la_SOURCES)
libgcj_noncore_la_SOURCES =
endif
-----------------------------<snip>
if BUILD_SUBLIBS
libgcj_core_la_LDFLAGS = $(libgcj_la_LDFLAGS)
libgcj_noncore_la_LDFLAGS = $(libgcj_la_LDFLAGS)
endif
-----------------------------<snip>
if BUILD_SUBLIBS
libgcj_core_la_LIBADD = \
	classpath/native/fdlibm/libfdlibm.la \
	java/lang/Object.lo \
	java/lang/Class.lo \
	java/process-$(PLATFORM).lo \
	$(all_packages_source_files:.list=.lo) \
--> note $(bc_objects) missing here as compared to libgcj_la_LIBADD.
	$(propertyo_files) \
	$(LIBFFI) $(ZLIBS) $(GCLIBS)
libgcj_noncore_la_LIBADD = $(bc_objects)
endif
-----------------------------<snip>
if BUILD_SUBLIBS
libgcj_core_la_DEPENDENCIES = $(libgcj_la_DEPENDENCIES)
libgcj_noncore_la_DEPENDENCIES = $(libgcj_la_DEPENDENCIES) libgcj-core.la
endif
-----------------------------<snip>
if BUILD_SUBLIBS
libgcj_core_la_DEPENDENCIES += $(srcdir)/libgcj.ver
libgcj_noncore_la_DEPENDENCIES += $(srcdir)/libgcj.ver
endif
-----------------------------<snip>
if BUILD_SUBLIBS
libgcj_core_la_LINK = $(libgcj_la_LINK)
libgcj_noncore_la_LINK = $(libgcj_la_LINK)
endif
-----------------------------<snip>-----------------------------

... where BUILD_SUBLIBS is my new AM_CONDITIONAL flag enabled by
--enable-libgcj-sublibs.

  However, the new libjava-core doesn't link, and appears to contain many
dependencies on the $(bc_objects) files, for e.g. fundamental language features:

gnu/java/awt/.libs/java2d.o:/gnu/gcc/gcc/libjava/classpath/gnu/java/awt/java2d/PolyEdge.java:135:
undefined reference to `int gnu::java::math::Fixed::div(int, int, int)'
gnu/java/awt/.libs/java2d.o:/gnu/gcc/gcc/libjava/classpath/gnu/java/awt/java2d/ScanlineConverter.java:419:
undefined reference to `int gnu::java::math::Fixed::div(int, int, int)'

... and even entire complex packages:

java/.libs/util.o:/gnu/gcc/gcc/libjava/classpath/java/util/Properties.java:689:
undefined reference to `org::w3c::dom::bootstrap::DOMImplementationRegistry*
org::w3c::dom::bootstrap::DOMImplementationRegistry::newInstance()'
java/.libs/util.o:/gnu/gcc/gcc/libjava/classpath/java/util/Properties.java:690:
undefined reference to `org::w3c::dom::DOMImplementation*
org::w3c::dom::bootstrap::DOMImplementationRegistry::getDOMImplementation(java::lang::String*)'
java/.libs/util.o:/gnu/gcc/gcc/libjava/classpath/java/util/Properties.java:692:
undefined reference to `org::w3c::dom::DOMImplementation::class$'
java/.libs/util.o:/gnu/gcc/gcc/libjava/classpath/java/util/Properties.java:694:
undefined reference to `org::w3c::dom::DOMImplementation::class$'
java/.libs/util.o:/gnu/gcc/gcc/libjava/classpath/java/util/Properties.java:695:
undefined reference to `org::w3c::dom::Document::class$'
java/.libs/util.o:/gnu/gcc/gcc/libjava/classpath/java/util/Properties.java:698:
undefined reference to `org::w3c::dom::Document::class$'
java/.libs/util.o:/gnu/gcc/gcc/libjava/classpath/java/util/Properties.java:699:
undefined reference to `org::w3c::dom::Document::class$'
java/.libs/util.o:/gnu/gcc/gcc/libjava/classpath/java/util/Properties.java:699:
undefined reference to `org::w3c::dom::Element::class$'

  So, did I do the partitioning wrong here?  Or have I misunderstood what you
were referring to as "interdependencies"?

    cheers,
      DaveK