From 8d9668dab9463a65e1af2ebf3c936bcff8116cd8 Mon Sep 17 00:00:00 2001
From: Taylor R Campbell <campbell+lz4@mumble.net>
Date: Wed, 14 Jun 2023 11:15:40 +0000
Subject: [PATCH] contrib/gen_manual: Allow caller to set CXX_FOR_BUILD for
 gen_manual.

This way, in a cross-build of lz4, you can set CXX_FOR_BUILD to a
native compiler that can produce a gen_manual executable to run at
build-time.

fix https://github.com/lz4/lz4/issues/1240
---
 contrib/gen_manual/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/contrib/gen_manual/Makefile b/contrib/gen_manual/Makefile
index 262c80de8..fd0608021 100644
--- a/contrib/gen_manual/Makefile
+++ b/contrib/gen_manual/Makefile
@@ -56,8 +56,9 @@ endif
 .PHONY: default
 default: gen_manual
 
+CXX_FOR_BUILD = $(CXX)
 gen_manual: gen_manual.cpp
-	$(CXX) $(FLAGS) $^ -o $@$(EXT)
+	$(CXX_FOR_BUILD) $(FLAGS) $^ -o $@$(EXT)
 
 $(LZ4MANUAL) : gen_manual $(LZ4API)
 	echo "Update lz4 manual in /doc"