# its moral equivalent, _XOPEN_SOURCE=500 (which would
# define a lot of the required prototypes for us), because
# the gcc-processed version of <sys/wait.h> contains fatally
-# conflicting prototypes for wait3().
+# conflicting prototypes for wait3(). The _SOCKADDR_LEN is
+# needed to get struct sockaddr and struct sockaddr_in to align.
case "$cc" in
-*g++*) ccflags="$ccflags -D_XOPEN_SOURCE -D_OSF_SOURCE -D_AES_SOURCE -D_BSD -D_POSIX_C_SOURCE=199309L -D_POSIX_PII_SOCKET" ;;
+*g++*) ccflags="$ccflags -D_XOPEN_SOURCE -D_OSF_SOURCE -D_AES_SOURCE -D_BSD -D_POSIX_C_SOURCE=199309L -D_POSIX_PII_SOCKET -D_SOCKADDR_LEN" ;;
esac
# for gcc the Configure knows about the -fpic: