diff --git a/configure.ac b/configure.ac
index 58be79039..e343875d8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -148,6 +148,9 @@ m4_define([LIBJAYLINK_ADAPTERS],
 m4_define([PCIE_ADAPTERS],
 	[[[xlnx_pcie_xvc], [Xilinx XVC/PCIe], [XLNX_PCIE_XVC]]])
 
+m4_define([SERIAL_PORT_ADAPTERS],
+	[[[buspirate], [Bus Pirate], [BUS_PIRATE]]])
+
 m4_define([OPTIONAL_LIBRARIES],
 	[[[capstone], [Use Capstone disassembly framework], []]])
 
@@ -249,6 +252,7 @@ AC_ARG_ADAPTERS([
   LIBFTDI_ADAPTERS,
   LIBFTDI_USB1_ADAPTERS
   LIBGPIOD_ADAPTERS,
+  SERIAL_PORT_ADAPTERS,
   LIBJAYLINK_ADAPTERS
   ],[auto])
 
@@ -311,10 +315,6 @@ AC_ARG_ENABLE([gw16012],
   AS_HELP_STRING([--enable-gw16012], [Enable building support for the Gateworks GW16012 JTAG Programmer]),
   [build_gw16012=$enableval], [build_gw16012=no])
 
-AC_ARG_ENABLE([buspirate],
-  AS_HELP_STRING([--enable-buspirate], [Enable building support for the Buspirate]),
-  [build_buspirate=$enableval], [build_buspirate=no])
-
 AC_ARG_ENABLE([sysfsgpio],
   AS_HELP_STRING([--enable-sysfsgpio], [Enable building support for programming driven via sysfs gpios.]),
   [build_sysfsgpio=$enableval], [build_sysfsgpio=no])
@@ -399,10 +399,13 @@ AS_CASE([$host],
     ])
     parport_use_giveio=yes
 
-    AS_IF([test "x$build_buspirate" = "xyes"], [
+    AS_IF([test "x$enable_buspirate" = "xyes"], [
       AC_MSG_ERROR([buspirate currently not supported by MinGW32 hosts])
     ])
 
+    # In case enable_buspirate=auto, make sure it will not be built.
+    enable_buspirate=no
+
     AC_SUBST([HOST_CPPFLAGS], [-D__USE_MINGW_ANSI_STDIO])
   ],
   [*darwin*], [
@@ -529,7 +532,7 @@ AS_IF([test "x$build_gw16012" = "xyes"], [
   AC_DEFINE([BUILD_GW16012], [0], [0 if you don't want the Gateworks GW16012 driver.])
 ])
 
-AS_IF([test "x$build_buspirate" = "xyes"], [
+AS_IF([test "x$enable_buspirate" != "xno"], [
   AC_DEFINE([BUILD_BUSPIRATE], [1], [1 if you want the Buspirate JTAG driver.])
 ], [
   AC_DEFINE([BUILD_BUSPIRATE], [0], [0 if you don't want the Buspirate JTAG driver.])
@@ -693,7 +696,7 @@ AM_CONDITIONAL([USB_BLASTER_DRIVER], [test "x$enable_usb_blaster" != "xno" -o "x
 AM_CONDITIONAL([AMTJTAGACCEL], [test "x$build_amtjtagaccel" = "xyes"])
 AM_CONDITIONAL([GW16012], [test "x$build_gw16012" = "xyes"])
 AM_CONDITIONAL([REMOTE_BITBANG], [test "x$build_remote_bitbang" = "xyes"])
-AM_CONDITIONAL([BUSPIRATE], [test "x$build_buspirate" = "xyes"])
+AM_CONDITIONAL([BUSPIRATE], [test "x$enable_buspirate" != "xno"])
 AM_CONDITIONAL([SYSFSGPIO], [test "x$build_sysfsgpio" = "xyes"])
 AM_CONDITIONAL([XLNX_PCIE_XVC], [test "x$build_xlnx_pcie_xvc" = "xyes"])
 AM_CONDITIONAL([USE_LIBUSB1], [test "x$use_libusb1" = "xyes"])
@@ -778,7 +781,7 @@ m4_foreach([adapter], [USB1_ADAPTERS,
 	HIDAPI_ADAPTERS, HIDAPI_USB1_ADAPTERS, LIBFTDI_ADAPTERS,
 	LIBFTDI_USB1_ADAPTERS,
 	LIBGPIOD_ADAPTERS,
-	LIBJAYLINK_ADAPTERS, PCIE_ADAPTERS,
+	LIBJAYLINK_ADAPTERS, PCIE_ADAPTERS, SERIAL_PORT_ADAPTERS,
 	OPTIONAL_LIBRARIES],
 	[s=m4_format(["%-40s"], ADAPTER_DESC([adapter]))
 	AS_CASE([$ADAPTER_VAR([adapter])],