[gmx-users] "cannot compute sizeof (int), 77" on AIX 5.3 PPC p575 (searched the list)

[liu xin]

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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