add jerbuild

ober

f204f89ceb5cf6420cfc39dde7bdf5c01744123a

diff --git a/.jerbuild b/.jerbuild
new file mode 100644
index 0000000..15d6cf9
--- /dev/null
+++ b/.jerbuild
@@ -0,0 +1,12 @@
+;; Build jpg with a standalone jerbuild binary.
+
+(entry "support/binary-entry.ss")
+(output "jpg")
+(requires "cc" "cargo" "../jerboa/jerboa-native-rs")
+(notes "Builds pgp-native plus jerboa-native-rs with tls,sqlite,crypto. DuckDB is not required. The legacy OS-specific scripts still document extra static FFI symbol registration details.")
+(libdirs ".")
+(rust-crates
+  "pgp-native/Cargo.toml"
+  ("../jerboa/jerboa-native-rs/Cargo.toml"
+   features: "tls,sqlite,crypto"
+   no-default-features: #t))