[PD] undefined symbol after compiling and linking an external

[Yves Degoyon]

ola,

think you should use gcc as linker and not ld.

suerte.,
sevy

Charles Henry wrote:

>Hi, Folks,
>   I have created a program called wpp~ which executes the WaveTrans
>function from the wavelet library wave++.  My big problem here is
>knowing how to program the code for an external in C++.  I am using a
>C++ function within wpp~.c.
>The wavelet library uses an Interval class, which consists of an
>indexed array of doubles (re-defined as real ) .  So, I added a c++
>function which is called by pd that takes an array of floats and an
>integer by reference.  This c++ function, createDWT, is called in
>wpp~.c itself.  createDWT simply copies the information into an
>Interval, uses the WaveTrans function from the wave++ library and
>copies the information back.
>createDWT is separately compiled, and the ld command is then used to
>link the program.  The compiling and linking seem to work.....but when
>pd loads up wpp~ the terminal says
>Undefined symbol (_ZdaPv)     (I have actually had several different
>undefined symbols at different times).
> The commands used for compiling and linking are as follows:
>LINUXCFLAGS = -DPD -O2 -funroll-loops -fomit-frame-pointer -fPIC \
>    -Wall -W -Wshadow -Wstrict-prototypes \
>    -Wno-unused -Wno-parentheses -Wno-switch $(CFLAGS)
>
>LINUXINCLUDE =  -I../../src -Iwave++/source
>
>.c.pd_linux:
>	$(CC) $(LINUXINCLUDE) $(LINUXCFLAGS) -I../../src -o $*.o -c $*.c
>	$(CC) $(LINUXINCLUDE) $(LINUXCFLAGS) -Iwave++/source -o createDWT.o
>-c createDWT.cc
>	ld -export-dynamic -shared -Lwave++/source/
>-L/usr/lib/gcc/i386-redhat-linux/3.4.3/   /
>            -o wpp~.pd_linux wpp~.o createDWT.o -lc -lm -lw -lstdc++
>	rm -f $*.o
>
>I have been using FC3, but I am currently upgrading to FC4 to see if
>it resolves this issue, like if the linker needs revision or
>something.
>
>Also, if anyone knows an easier way to use wave++ or a wavelet
>transform in pd, please let me know.
>
>
>--
>Charles Zachary Henry
>
>anti.dazed.med
>Med student who needs a Mickey's
>
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>  
>