diff --git a/docs/BUILD.md b/docs/BUILD.md
index 7f2a56ec..bdf8a3e5 100644
--- a/docs/BUILD.md
+++ b/docs/BUILD.md
@@ -31,6 +31,8 @@ The `master` branch is not recommended for production use since it may contain b
 
 By default, Ergo is built with cgo disabled, producing a fully statically linked binary. You can disable this with `export CGO_ENABLED=1` before running `make`.
 
+Ergo can be cross-compiled using [standard Go environment variables](https://go.dev/doc/install/source#environment), e.g. `GOOS=linux GOARCH=arm GOARM=v6` will build an `ergo` binary suitable for a 32-bit Raspberry Pi.
+
 The default Ergo binary (built with `make` or `make build`) includes support for all optional features. Each optional feature is controlled via a separate build tag; to override the build tags, pass the environment variable `ERGO_BUILD_TAGS` with a space-separated list of tags. (For example, for parity with v2.17.0 and earlier, you can run `ERGO_BUILD_TAGS="i18n mysql" make`. Passing the empty string disables all optional features.)
 
 The supported build tags are:
@@ -39,3 +41,5 @@ The supported build tags are:
 * `mysql` enables support for MySQL as a persistent history backend. (This was a default feature in v2.17.0 and earlier.)
 * `postgresql` enables support for PostgreSQL as a persistent history backend.
 * `sqlite` enables support for SQLite as a persistent history backend.
+
+`sqlite` is particularly memory-intensive to compile (but not to run), so if you're building Ergo for a memory-constrained environment, you may want to consider cross-compilation.