I'm trying to host a cgi I've written. It uses Database.HDBC, Database.HDBC.MySQL, Network.CGI, and Text.XHtml.Transitional Here is the command I'm using to compile ghc --make -optl-static -optl-pthread -static -o test.cgi -package cgi -package xhtml -package HDBC-mysql -package HDBC -optl -lz Main.hs and I get "(.text+0x120): undefined reference to `compress'" Searching around I found that mysql recommended passing "lz" to the linker... so I added -optl -lz Complete command and output: ghc --make -optl-static -optl-pthread -static -o test.cgi -package cgi -package xhtml -package HDBC-mysql -package HDBC -optl -lz Main.hs [1 of 5] Compiling Config ( Config.hs, Config.o ) [2 of 5] Compiling Model ( Model.hs, Model.o ) [3 of 5] Compiling View ( View.hs, View.o ) [4 of 5] Compiling Controller ( Controller.hs, Controller.o ) [5 of 5] Compiling Main ( Main.hs, Main.o ) Linking test.cgi ... /opt/ghc-6.10.4/lib/ghc-6.10.4/network-2.2.1.2/libHSnetwork-2.2.1.2.a(HsNet.o): In function `my_inet_ntoa': HsNet.c:(.text+0x20): multiple definition of `my_inet_ntoa' /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libmysqlclient.a(my_net.o):(.text+0x0): first defined here /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libmysqlclient.a(mf_pack.o): In function `unpack_dirname': (.text+0x75b): warning: Using 'getpwnam' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libmysqlclient.a(libmysql.o): In function `read_user_name': (.text+0x6081): warning: Using 'getpwuid' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libmysqlclient.a(mf_pack.o): In function `unpack_dirname': (.text+0x76a): warning: Using 'endpwent' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking /opt/ghc-6.10.4/lib/ghc-6.10.4/network-2.2.1.2/libHSnetwork-2.2.1.2.a(HsNet.o): In function `hsnet_getaddrinfo': HsNet.c:(.text+0x15): warning: Using 'getaddrinfo' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libmysqlclient.a(ssl.o): In function `yaSSL::read_file(yaSSL::SSL_CTX*, char const*, int, yaSSL::CertType)': (.text+0x29f3): warning: memset used with constant zero length parameter; this could be due to transposed parameters /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libmysqlclient.a(my_gethostbyname.o): In function `my_gethostbyname_r': (.text+0x3c): warning: Using 'gethostbyname_r' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking /opt/ghc-6.10.4/lib/ghc-6.10.4/network-2.2.1.2/libHSnetwork-2.2.1.2.a(BSD__213.o): In function `s9bc_info': (.text+0x55): warning: Using 'getprotobyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libmysqlclient.a(libmysql.o): In function `mysql_server_init': (.text+0x6b22): warning: Using 'getservbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libmysqlclient.a(my_compress.o): In function `my_uncompress': (.text+0x6b): undefined reference to `uncompress' /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libmysqlclient.a(my_compress.o): In function `my_compress_alloc': (.text+0x120): undefined reference to `compress' collect2: ld returned 1 exit status I'm using ghc 6.10.4 on Ubuntu 9.04 i386 I have libmysqlclient15-dev installed.... Thanks, Austin