From d968c9fdbe86888cffc56ec580503b1eff40b764 Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Mon, 19 May 2025 23:54:56 +0100
Subject: [PATCH] app-text/calibre: only add -std=gnu17 for GCC

The build system adds CFLAGS into CXXFLAGS which upsets Clang.

Clang hasn't changed its default yet, so this is good enough as a temporary
workaround (as it's fixed upstream anyway here).

Closes: https://bugs.gentoo.org/956329
Signed-off-by: Sam James <sam@gentoo.org>
---
 app-text/calibre/calibre-7.22.0.ebuild | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app-text/calibre/calibre-7.22.0.ebuild b/app-text/calibre/calibre-7.22.0.ebuild
index 9ee965558d70a..190fc9eea729d 100644
--- a/app-text/calibre/calibre-7.22.0.ebuild
+++ b/app-text/calibre/calibre-7.22.0.ebuild
@@ -166,7 +166,7 @@ src_compile() {
 
 	# Workaround for GCC 15 (bug #949509)
 	# Can be dropped w/ >=7.25.0
-	append-cflags -std=gnu17
+	tc-is-gcc && append-cflags -std=gnu17
 
 	# bug 821871
 	local MY_LIBDIR="${ESYSROOT}/usr/$(get_libdir)"