diff -up XSupplicant-2.2.0-src/xsupplicant/configure.ac.DSO XSupplicant-2.2.0-src/xsupplicant/configure.ac --- XSupplicant-2.2.0-src/xsupplicant/configure.ac.DSO 2009-06-18 13:20:09.000000000 -0400 +++ XSupplicant-2.2.0-src/xsupplicant/configure.ac 2010-02-10 16:05:30.374641077 -0500 @@ -361,6 +361,9 @@ case "$host_os" in AC_CHECK_HEADER(sys/socket.h, [], [AC_MSG_ERROR([header file \ <sys/socket.h> is required for Xsupplicant.])]) + AC_CHECK_LIB(dl, dladdr) + AC_CHECK_LIB(z, deflate) + AS_IF([test "$enable_static_iwlib" != yes], [AC_CHECK_HEADER([iwlib.h], [MORELIBS="${MORELIBS} -liw"], [AC_MSG_ERROR([header file <iwlib.h> is required for XSupplicant.])])],