Revert "Merge pull request #190 from fragglet/patch-1"

This reverts commit a4a2c88ed7, reversing
changes made to 1918557e78.

BasiliskII/src/Unix/configure.ac

@@ -569,6 +569,9 @@ case "$host" in
 *-*-hpux10.26)
 	disable_ptmx_check=yes
 	;;
+*-*-linux*)
+	no_dev_ptmx=1
+	;;
 mips-sony-bsd|mips-sony-newsos4)
 	AC_DEFINE(HAVE_NEWS4, 1, [Define if you are on NEWS-OS (additions from openssh-3.2.2p1, for sshpty.c).])
 	;;
@@ -582,6 +585,7 @@ mips-sony-bsd|mips-sony-newsos4)
 	no_dev_ptmx=1
 	;;
 *-*-darwin*)
+	no_dev_ptmx=1
 	LIBS="$LIBS -lstdc++"
 	;;
 *-*-freebsd*)