Dear GMXers I got the error message " cannot compute sizeof (int)" when I tried to configure GMX3.3.1 on IBM PPC p575 AIX5.3, this is how I did it:
for fftw2.1.5 export CC="xlc_r -q64 -qhot" export CXX="xlC_r -q64 -qhot" export OBJECT_MODE=64 export FFLAGS="-O3 -qarch=pwr4 -qtune=pwr4 -qmaxmem=-1" export CFLAGS="-O3 -qarch=pwr4 -qtune=pwr4 -qmaxmem=-1" ./configure --prefix=/home/usr/programs/fftw215 --enable-float --enable-mpi --enable-thread make make install for GMX3.3.1 export CPPFLAGS=-I/home/usr/programs/fftw215/include export LDFLAGS=-I/home/usr/programs/fftw215/lib ./configure --prefix=/home/usr/programs/gromacs331mpi --with-fft=fftw2 --without-x --disable-fortran --enable-mpi --enable-float then I got the following error: checking size of int... configure: error: cannot compute sizeof (int), 77 have you guys ever experienced this problem before? Any suggestions are appreciated! Yours Xin
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