Hello, The stable branch of the network library includes the following code: #if !(MIN_VERSION_base(4,6,0)) I cannot compile the stable branch with HP 2011.4.0.0 on Linux 2: Preprocessing library network-2.3.0.14... BSD.hsc:115:23: error: missing binary operator before token "(" BSD.hsc:115:23: error: missing binary operator before token "(" BSD.hsc:115:23: error: missing binary operator before token "(" compiling dist/build/Network/BSDhsc_make.c failed (exit code 1) command was: /usr/bin/gcc -c dist/build/Network/BSD_hsc_make.c -o dist/build/Network/BSD_hsc_make.o -fno-stack-protector -fno-stack-protector -DGLASGOW_HASKELL_=700 -Dlinux_BUILD_OS -Dlinux_HOST_OS -Di386_BUILD_ARCH -Di386_HOST_ARCH -Iinclude -DCALLCONV=ccall -I/ghc7.0.4/lib/ghc-7.0.4/unix-2.4.2.0/include -I/ghc7.0.4/lib/ghc-7.0.4/bytestring-0.9.1.10/include -I/ghc7.0.4/lib/ghc-7.0.4/base-4.3.1.0/include -I/ghc7.0.4/lib/ghc-7.0.4/include -I/ghc7.0.4/lib/ghc-7.0.4/include -I/ghc7.0.4/lib/ghc-7.0.4/include/ "dist/build/autogen/cabal_macros.h" defines MIN_VERSION_base but "dist/build/Network/BSD_hsc_make.c" does not include it. If you guys know why this happens, please let me know. For more information, please refer to: https://github.com/haskell/network/issues/43 --Kazu