From 66f3b530f35b5f3d153613f202ef6c1bf4eec25a Mon Sep 17 00:00:00 2001
From: Daniel Svensson <dsvensson@gmail.com>
Date: Mon, 18 Nov 2024 21:32:08 +0100
Subject: [PATCH] BUILD: Human readable error if protocol.h not found.

---
 build-linux.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/build-linux.sh b/build-linux.sh
index 3e2ef968f..8c3bee11b 100755
--- a/build-linux.sh
+++ b/build-linux.sh
@@ -138,6 +138,11 @@ if [ -d ".git" ]; then
 	git submodule update --init --recursive >> $BUILD_LOG 2>&1 || error "Failed to checkout git submodules. Exiting."
 fi
 
+if [ ! -f src/qwprot/src/protocol.h ]; then
+  error "Bad source code directory, not a git repository, and lacks src/qwprot/src/protocol.h." \
+        "Download an official source release or checkout the official git repository."
+fi
+
 step "Configure build..."
 if command -v ninja >/dev/null 2>&1; then
   GENERATOR="-G Ninja"