clean up pico-serprog for release

moved cmake files into a separate build directory.
this can just be deleted for the source release.

might as well use cmake for the actual build too.
that makes repeated builds faster for some reason.

Signed-off-by: Riku Viitanen <riku.viitanen@protonmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/script/build/release/src b/script/build/release/src
index 8d36e5fb..27a93729 100755
--- a/script/build/release/src
+++ b/script/build/release/src
@@ -169,6 +169,8 @@ purge_files()
 	    err "purge_files rm-rf2: can't purge .git files/directories"
 	rm -Rf cbutils || err "purge_files: can't remove ${srcdir}/cbutils/"
 	rm -Rf elf || err "purge_files: can't remove ${srcdir}/elf/"
+	rm -Rf util-fw/rp2040/pico-serprog/build
+		|| err "purge_files: can't remove pico-serprog/build"
 	)
 }