media-libs/zmusic: mark as LTO-unsafe

It's not actually LTO unsafe. Its bundled adlmidi dependency is.
Unfortunately, this package uses bundled dependencies and it's only
gotten worse in later upstream releases.

Issue still present in upstream git and in the libadlmidi source as
well.

Not currently up to figuring out how to patch the heck out of this to
devendor it, given upstream doesn't provide options for it.

Bug: https://github.com/ZDoom/ZMusic/issues/56
Closes: https://bugs.gentoo.org/860117
Signed-off-by: Eli Schwartz <eschwartz93@gmail.com>
Signed-off-by: Sam James <sam@gentoo.org>

media-libs/zmusic/zmusic-1.1.4.ebuild

@@ -1,9 +1,9 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
 
-inherit cmake
+inherit cmake flag-o-matic
 
 MY_PN="ZMusic"
 DESCRIPTION="GZDoom's music system as a standalone library"
@@ -35,6 +35,11 @@ src_prepare() {
 }
 
 src_configure() {
+	# -Werror=odr
+	# https://bugs.gentoo.org/860117
+	# https://github.com/ZDoom/ZMusic/issues/56
+	filter-lto
+
 	local mycmakeargs=(
 		-DFORCE_INTERNAL_ZLIB=OFF
 		-DFORCE_INTERNAL_GME=ON