AM_CONDITIONAL([BUILD_LINUX], [test "x$ac_system" = "xLinux"])
AM_CONDITIONAL([BUILD_OPENBSD], [test "x$ac_system" = "xOpenBSD"])
AM_CONDITIONAL([BUILD_SOLARIS], [test "x$ac_system" = "xSolaris"])
AM_CONDITIONAL([BUILD_LINUX], [test "x$ac_system" = "xLinux"])
AM_CONDITIONAL([BUILD_OPENBSD], [test "x$ac_system" = "xOpenBSD"])
AM_CONDITIONAL([BUILD_SOLARIS], [test "x$ac_system" = "xSolaris"])