From b286f6b5a376c2785ad8a51120998f749cc6b585 Mon Sep 17 00:00:00 2001
From: Arseny Kapoulkine <arseny.kapoulkine@gmail.com>
Date: Fri, 5 Nov 2021 11:44:47 -0700
Subject: [PATCH] Only use -Wno-unused if we're actually using gcc

This is a bit difficult to detect, so for now we conservatively say that
macOS always uses clang, and clang-based compilers always are called
"clang".
---
 Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index ea416be4..1fd63805 100644
--- a/Makefile
+++ b/Makefile
@@ -49,7 +49,10 @@ OBJECTS=$(AST_OBJECTS) $(COMPILER_OBJECTS) $(ANALYSIS_OBJECTS) $(VM_OBJECTS) $(T
 CXXFLAGS=-g -Wall -Werror
 LDFLAGS=
 
-CXXFLAGS+=-Wno-unused # temporary, for older gcc versions
+# temporary, for older gcc versions as they treat var in `if (type var = val)` as unused
+ifeq ($(findstring g++,$(shell $(CXX) --version)),g++)
+CXXFLAGS+=-Wno-unused
+endif
 
 # configuration-specific flags
 ifeq ($(config),release)