Ubuntu: How to compile PrecoSAT v.570 under ubuntu 11.10

By downloading PrecoSAT from http://fmv.jku.at/precosat/ and trying to install it on Ubuntu 11.10 32-bit (Oneiric Ocelot) by:

    • Decompressing the files
    • and calling ./configure && make

I got the following error at make:

g++ -O3 -m32 -static -Wall -Wextra -DNDEBUG -DNLOGPRECO -DNSTATSPRECO  -c precomain.cc
In file included from precomain.cc:23:0:
precosat.hh:164:31: error: ‘ptrdiff_t’ has not been declared
precosat.hh:270:13: error: ‘ptrdiff_t’ has not been declared
make: *** [precomain.o] Error 1

which can be resolved by adding

#include <cstddef>

at the includes in the file precosat.hh

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