[SciPy-dev] Absoft & Scipy

Stephen Walton stephen.walton at csun.edu
Thu Feb 3 16:13:45 CST 2005


Pearu Peterson wrote:

>   python setup.py build_src build_ext -DUNDERSCORE_G77 build

/usr/bin/g77 -shared 
build/temp.linux-i686-2.3/build/src/Lib/fftpack/_fftpackmodule.o 
build/temp.linux-i686-2.3/Lib/fftpack/src/zfft.o 
build/temp.linux-i686-2.3/Lib/fftpack/src/drfft.o 
build/temp.linux-i686-2.3/Lib/fftpack/src/zrfft.o 
build/temp.linux-i686-2.3/Lib/fftpack/src/zfftnd.o 
build/temp.linux-i686-2.3/build/src/fortranobject.o -L/usr/lib 
-Lbuild/temp.linux-i686-2.3 -ldfftpack -lrfftw -lfftw -lg2c -o 
build/lib.linux-i686-2.3/scipy/fftpack/_fftpack.so
/usr/bin/ld: cannot find -ldfftpack
collect2: ld returned 1 exit status
/usr/bin/ld: cannot find -ldfftpack
collect2: ld returned 1 exit status
error: Command "/usr/bin/g77 -shared 
build/temp.linux-i686-2.3/build/src/Lib/fftpack/_fftpackmodule.o 
build/temp.linux-i686-2.3/Lib/fftpack/src/zfft.o 
build/temp.linux-i686-2.3/Lib/fftpack/src/drfft.o 
build/temp.linux-i686-2.3/Lib/fftpack/src/zrfft.o 
build/temp.linux-i686-2.3/Lib/fftpack/src/zfftnd.o 
build/temp.linux-i686-2.3/build/src/fortranobject.o -L/usr/lib 
-Lbuild/temp.linux-i686-2.3 -ldfftpack -lrfftw -lfftw -lg2c -o 
build/lib.linux-i686-2.3/scipy/fftpack/_fftpack.so" failed with exit 
status 1

Grep'ping the output file from the builds reveals that, indeed, dfftpack 
never gets compiled when using the "build_src build_ext" form of the 
command.

Yah know, maybe this isn't worth it.  I can get everything working if I 
use g77-compiled LAPACK, ATLAS, and scipy such as you're providing on 
the Web site or I build myself.  Since LAPACK and ATLAS contain no 
routines with embedded underscores, g77 compiled versions link against 
Absoft compiled callers just fine.  I wonder how much performance I 
really gain by insisting on compiling with Absoft.  Off to run some 
benchmarks...




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