With VT=n, the kernel build fails with: drivers/built-in.o: In function `kgdboc_pre_exp_handler': kgdboc.c:(.text+0x7b5aa): undefined reference to `fg_console' kgdboc.c:(.text+0x7b5ce): undefined reference to `vc_cons' kgdboc.c:(.text+0x7b5d5): undefined reference to `vc_cons' kgdboc.o is built when KGDB_SERIAL_CONSOLE is set. So make KGDB_SERIAL_CONSOLE depend on HW_CONSOLE which includes those symbols. Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> Reported-by: "Jim Davis" <jim.epost@xxxxxxxxx> Cc: Jason Wessel <jason.wessel@xxxxxxxxxxxxx> Cc: <kgdb-bugreport@xxxxxxxxxxxxxxxxxxxxx> Cc: <linux-serial@xxxxxxxxxxxxxxx> --- lib/Kconfig.kgdb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.kgdb b/lib/Kconfig.kgdb index c635a107a7de..533f912638ed 100644 --- a/lib/Kconfig.kgdb +++ b/lib/Kconfig.kgdb @@ -22,7 +22,7 @@ config KGDB_SERIAL_CONSOLE tristate "KGDB: use kgdb over the serial console" select CONSOLE_POLL select MAGIC_SYSRQ - depends on TTY + depends on TTY && HW_CONSOLE default y help Share a serial console with kgdb. Sysrq-g must be used -- 2.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html