configure.ac: show the linuxgpiod adapter in the configuration summary

List AC_ARG_ADAPTERS was missing a comma separating two of the elements.

Also verify that each adapter is set to either 'auto', 'yes' or 'no',
which should prevent such issues from going unnoticed in the future.

Change-Id: I0d407e03b1e5a3edc61d7dc93d5ffa70fe079b3c
Signed-off-by: R. Diez <[email protected]>
Reviewed-on: https://review.openocd.org/c/openocd/+/8534
Tested-by: jenkins
Reviewed-by: R. Diez <[email protected]>
Reviewed-by: Antonio Borneo <[email protected]>

configure.ac

@@ -283,7 +283,7 @@ AC_ARG_ADAPTERS([
   HIDAPI_ADAPTERS,
   HIDAPI_USB1_ADAPTERS,
   LIBFTDI_ADAPTERS,
-  LIBFTDI_USB1_ADAPTERS
+  LIBFTDI_USB1_ADAPTERS,
   LIBGPIOD_ADAPTERS,
   SERIAL_PORT_ADAPTERS,
   PCIE_ADAPTERS,
@@ -372,10 +372,6 @@ AS_CASE([$host_os],
       AC_MSG_ERROR([sysfsgpio is only available on linux])
     ])
 
-    AS_IF([test "x$enable_linuxgpiod" = "xyes"], [
-      AC_MSG_ERROR([linuxgpiod is only available on linux])
-    ])
-
     AS_CASE([$host_os], [freebsd*], [],
     [
       AS_IF([test "x$build_rshim" = "xyes"], [
@@ -722,7 +718,7 @@ PROCESS_ADAPTERS([HIDAPI_ADAPTERS], ["x$use_hidapi" = "xyes"], [hidapi])
 PROCESS_ADAPTERS([HIDAPI_USB1_ADAPTERS], ["x$use_hidapi" = "xyes" -a "x$use_libusb1" = "xyes"], [hidapi and libusb-1.x])
 PROCESS_ADAPTERS([LIBFTDI_ADAPTERS], ["x$use_libftdi" = "xyes"], [libftdi])
 PROCESS_ADAPTERS([LIBFTDI_USB1_ADAPTERS], ["x$use_libftdi" = "xyes" -a "x$use_libusb1" = "xyes"], [libftdi and libusb-1.x])
-PROCESS_ADAPTERS([LIBGPIOD_ADAPTERS], ["x$use_libgpiod" = "xyes"], [libgpiod])
+PROCESS_ADAPTERS([LIBGPIOD_ADAPTERS], ["x$use_libgpiod" = "xyes"], [Linux libgpiod])
 PROCESS_ADAPTERS([LIBJAYLINK_ADAPTERS], ["x$use_internal_libjaylink" = "xyes" -o "x$use_libjaylink" = "xyes"], [libjaylink-0.2])
 PROCESS_ADAPTERS([PCIE_ADAPTERS], ["x$is_linux" = "xyes"], [Linux build])
 PROCESS_ADAPTERS([SERIAL_PORT_ADAPTERS], ["x$can_build_buspirate" = "xyes"],
@@ -889,6 +885,11 @@ m4_foreach([adapter], [USB1_ADAPTERS,
 		],
 		[no], [
 			echo "$s"no
+		],
+		[
+			AC_MSG_ERROR(m4_normalize([
+				Error in [adapter] "ADAPTER_ARG([adapter])": Variable "ADAPTER_VAR([adapter])"
+				has invalid value "$ADAPTER_VAR([adapter])".]))
 	])
 ])
 echo