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From Edwin.Mad...@VerizonWireless.com
Subject building JCC with gcc4.x on Cygwin windows:jvm_NULL_THUNK_DATA symbol not found
Date Thu, 04 Jun 2009 17:39:57 GMT
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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