From 928fd9d9b7d827b90545a15da36ebda1d7f4a5a8 Mon Sep 17 00:00:00 2001
From: Justin Traglia <95511699+jtraglia@users.noreply.github.com>
Date: Fri, 7 Apr 2023 07:57:48 -0500
Subject: [PATCH] [Go] Allow minimal preset (#283)

---
 bindings/go/README.md | 8 ++++++++
 bindings/go/main.go   | 4 +++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/bindings/go/README.md b/bindings/go/README.md
index 9245ddd..ae68d7c 100644
--- a/bindings/go/README.md
+++ b/bindings/go/README.md
@@ -40,6 +40,14 @@ Run the benchmarks with this command:
 go test -bench=Benchmark
 ```
 
+## Minimal
+
+By default, `FIELD_ELEMENTS_PER_BLOB` will be 4096 (mainnet), but you can
+manually set it to 4 (minimal), like so:
+```
+CGO_CFLAGS="-DFIELD_ELEMENTS_PER_BLOB=4" go build
+```
+
 ## Note
 
 The `go.mod` and `go.sum` files are in the project's root directory because the
diff --git a/bindings/go/main.go b/bindings/go/main.go
index 4555c1d..4450c7e 100644
--- a/bindings/go/main.go
+++ b/bindings/go/main.go
@@ -2,7 +2,9 @@ package cgokzg4844
 
 // #cgo CFLAGS: -I${SRCDIR}/../../src
 // #cgo CFLAGS: -I${SRCDIR}/blst_headers
-// #cgo CFLAGS: -DFIELD_ELEMENTS_PER_BLOB=4096
+// #ifndef FIELD_ELEMENTS_PER_BLOB
+// #define FIELD_ELEMENTS_PER_BLOB 4096
+// #endif
 // #include "c_kzg_4844.c"
 import "C"