Hi, Even though this is not really a Gecode-related question, the catch is that you need to pick up the right compiler, either 64 or 32 bit. You have to figure this out for your platform.
Let's assume the C++ compiler for 32 bit is called g++-32 (that's most likely wrong) and the C compiler is called gcc-32 (again, made up) then you can set the environment variable CXX and CC before you run configure to point to the right C++ and C compilers (one can also pass that to make by make CXX=g++-32 CC=gcc-32). Hope that helps Christian -- Christian Schulte, www.gecode.org/~schulte Professor of Computer Science, KTH, cschu...@kth.se Expert Researcher, SICS, cschu...@sics.se -----Original Message----- From: users-boun...@gecode.org [mailto:users-boun...@gecode.org] On Behalf Of Alexander Schuppisser Sent: Saturday, November 19, 2016 23:37 To: users@gecode.org Subject: [gecode-users] Compile gecode for 32-bit under Linux Hi, I'd like to compare the performance of a 64-bit version of fzn-gecode to a 32-bit-version unter Linux (Ubuntu 16.04 or 14.04) for a certain problem. But I could not crosscompile it. I know that it's possible, because in the Minizinc IDE is a fzn-gecode for 32 bit. But this version has dependencies to Qt (which I don't have running it on a server). That's how I compile what I need on 64 bit: static: export PREFIX="/home/nath/apps/gecode-5.0.0" ./configure \ --prefix="$PREFIX" --enable-float-vars=no --enable-examples=no --enable-qt=no --enable-gist=no --enable-doc-dot=no \ --enable-doc-tagfile=no --enable-driver=no --enable-examples=no --enable-scheduling=no --enable-graph=no --enable-minimodel=no \ --enable-static --disable-shared shared: export PREFIX="/home/nath/apps/gecode-5.0.0" CFLAGS="-Wl,-rpath,$PREFIX/lib" CXXFLAGS="-Wl,-rpath,$PREFIX/lib" \ ./configure \ --prefix="$PREFIX" --enable-float-vars=no --enable-examples=no --enable-qt=no --enable-gist=no --enable-doc-dot=no \ --enable-doc-tagfile=no --enable-driver=no --enable-examples=no --enable-scheduling=no --enable-graph=no --enable-minimodel=no Now what to cange / add to get a 32-bit binary in the end? I tried a lot of things with Flags and setting env-Variables before compiling found as general tips for cross compiling, but nothing worked for fzn-gecode. What do I need to do? Thank you Alexander -- ------------------------- Optor AG Ey 25 CH - 3063 Ittigen Tel. ++41 (0)31 382 51 87 Mob. ++41 (0)79 285 07 03 http://www.optor.ch _______________________________________________ Gecode users mailing list users@gecode.org https://www.gecode.org/mailman/listinfo/gecode-users
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