building JCC with gcc4.x on Cygwin windows:jvm_NULL_THUNK_DATA symbol not found

[Ed...@VerizonWireless.com]

getting jvm_NULL_THUNK_DATA not found error in the last step of building JCC on Cygwin/windows with "python setup.py build" after switching to gcc version 4.3.2 20080827 (beta) 2 (GCC) with Advise from Andi V, and Christian H.  gcc4x is available from Cygwin, but not as default -do not know why. 

String jvm_NULL_THUNK_DATA exists in  jvm.lib as can be seen below. This string appears 4 times, (included only once for this mail)

$ strings /c/Edwin/Programs/Java/jdk1.6.0_13/lib/jvm.lib | grep THUNK
jvm_NULL_THUNK_DATA

For simplicity replaced all object file names from following command with "*.o" below.

$ g++ -shared -Wl,--enable-auto-image-base *.o  -L/usr/lib/python2.5/config -lpython2.5 -o build/lib.cygwin-1.5.25-i686-2.5/jcc/_jcc.dll -L/c/Edwin/Programs/Java/jdk1.6.0_13/lib -ljvm -Wl,-S
Cannot export jvm_NULL_THUNK_DATA: symbol not found
collect2: ld returned 1 exit status
error: command 'g++' failed with exit status 1

it must be something simple or trivial I must be missing - any ideas/suggestions?

thanks in advance
Edwin




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Re: building JCC with gcc4.x on Cygwin windows:jvm_NULL_THUNK_DATA symbol not found

[Andi Vajda <va...@apache.org>]

On Thu, 4 Jun 2009, Edwin.Madari@VerizonWireless.com wrote:

> getting jvm_NULL_THUNK_DATA not found error in the last step of building JCC on Cygwin/windows with "python setup.py build" after switching to gcc version 4.3.2 20080827 (beta) 2 (GCC) with Advise from Andi V, and Christian H.  gcc4x is available from Cygwin, but not as default -do not know why.
>
> String jvm_NULL_THUNK_DATA exists in  jvm.lib as can be seen below. This string appears 4 times, (included only once for this mail)
>
> $ strings /c/Edwin/Programs/Java/jdk1.6.0_13/lib/jvm.lib | grep THUNK
> jvm_NULL_THUNK_DATA
>
> For simplicity replaced all object file names from following command with "*.o" below.
>
> $ g++ -shared -Wl,--enable-auto-image-base *.o  -L/usr/lib/python2.5/config -lpython2.5 -o build/lib.cygwin-1.5.25-i686-2.5/jcc/_jcc.dll -L/c/Edwin/Programs/Java/jdk1.6.0_13/lib -ljvm -Wl,-S
> Cannot export jvm_NULL_THUNK_DATA: symbol not found
> collect2: ld returned 1 exit status
> error: command 'g++' failed with exit status 1
>
> it must be something simple or trivial I must be missing - any ideas/suggestions?
>

Maybe you also need a newer linker ?
(I really don't know, I'm just guessing).

Andi..

> thanks in advance
> Edwin
>
>
>
>
> The information contained in this message and any attachment may be
> proprietary, confidential, and privileged or subject to the work
> product doctrine and thus protected from disclosure.  If the reader
> of this message is not the intended recipient, or an employee or
> agent responsible for delivering this message to the intended
> recipient, you are hereby notified that any dissemination,
> distribution or copying of this communication is strictly prohibited.
> If you have received this communication in error, please notify me
> immediately by replying to this message and deleting it and all
> copies and backups thereof.  Thank you.
>
>