From 9f37797e68febd9f35715f85fcee146366b81ca8 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Tue, 31 May 2022 11:31:19 -0400
Subject: Makefile: Pass -std=gnu11 for gcov builds

Otherwise, libgcov doesn't intercept functions like fork() and exec(),
so we lose some coverage data in xspawn.c.

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82457
---
 Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Makefile b/Makefile
index d368cf8..b521b30 100644
--- a/Makefile
+++ b/Makefile
@@ -160,6 +160,8 @@ endif
 
 ifneq ($(filter gcov,$(MAKECMDGOALS)),)
 LOCAL_CFLAGS += --coverage
+# gcov only intercepts fork()/exec() with -std=gnu*
+LOCAL_CFLAGS := $(patsubst -std=c%,-std=gnu%,$(LOCAL_CFLAGS))
 endif
 
 ifneq ($(filter release,$(MAKECMDGOALS)),)
-- 
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