Building JDK9 with all debugging information

[Omair Majid]

Hi,

I had trouble building a recent version of OpenJDK 9 in a configuration
that left all debugging information in the shared objects. So here's a
quick guide on how to do that:

    bash ./configure \
        --disable-zip-debug-info \
        --with-debug-level=release \
        --disable-warnings-as-errors

You might also like the following options to use more system libraries:

        --with-stdc++lib=dynamic \
        --with-zlib=system \
        --with-libjpeg=system \
        --with-giflib=system \
        --with-libpng=system \
        --with-lcms=system \

And this to enable stronger cyrpto:

        --enable-unlimited-crypto \

And then build it using:

    make \
        DEBUG_BINARIES=true \
        JAVAC_FLAGS=-g \
        STRIP_POLICY=no_strip \
        STRIP="" \
        ALT_OBJCOPY=none \
        all

DEBUG_BINARIES forces "-g" when building native code and JAVAC_FLAGS does the
same for Java code. STRIP_POLICY, STRIP, and ALT_OBJCOPY together prevent the
build from stripping debug information from shared objects.

Cheers,
Omair

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