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Using GHC version 7.4.2 with flags like -O3, I still get huge executable produced. I understand that GHC does static linking, and dependencies of the binary looks like: linux-vdso.so.1 (0x00007fff49bff000) libpcre.so.1 => /usr/lib/libpcre.so.1 (0x00007fe658d6c000) librt.so.1 => /usr/lib/librt.so.1 (0x00007fe658b64000) libutil.so.1 => /usr/lib/libutil.so.1 (0x00007fe658961000) libdl.so.2 => /usr/lib/libdl.so.2 (0x00007fe65875d000) libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007fe658541000) libcurl.so.4 => /usr/lib/libcurl.so.4 (0x00007fe6582e3000) libgmp.so.10 => /usr/lib/libgmp.so.10 (0x00007fe658074000) libm.so.6 => /usr/lib/libm.so.6 (0x00007fe657d7a000) libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007fe657b65000) libc.so.6 => /usr/lib/libc.so.6 (0x00007fe6577be000) /lib/ld-linux-x86-64.so.2 (0x00007fe658fca000) libssh2.so.1 => /usr/lib/libssh2.so.1 (0x00007fe657595000) libssl.so.1.0.0 => /usr/lib/libssl.so.1.0.0 (0x00007fe65732b000) libcrypto.so.1.0.0 => /usr/lib/libcrypto.so.1.0.0 (0x00007fe656f22000) libz.so.1 => /usr/lib/libz.so.1 (0x00007fe656d0c000 so far it looks quite good, however inside the binary I can see the lines: GHCi runtime linker: fatal error: I found a duplicate definition for symbol * Specifying the same object file twice on the GHCi command line ....BlockedIndefinitelyOnMVar.......BlockedIndefinitelyOnSTM........AsyncException..base....GHC.IO.FD.......FD......GHC.IO.FD.setSize. and actually a lot of text lines, including names of my functions, functions defined in other modules and so on. The question is - is it possible to remove those texts, and can GHC eliminate unused code from external libraries?

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