media-gfx/waifu2x-ncnn-vulkan: remove automatic lto check

Closes: https://bugs.gentoo.org/830950
Signed-off-by: Ionen Wolkens <ionen@gentoo.org>

media-gfx/waifu2x-ncnn-vulkan/files/waifu2x-ncnn-vulkan-20210521-no-lto.patch

@@ -0,0 +1,18 @@
+Users should be the ones to choose to add -flto or not and how. The test
+may also cause unnecessary noise wrt https://bugs.gentoo.org/830950
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -42,13 +42,4 @@
+ 
+ # enable global link time optimization
+-cmake_policy(SET CMP0069 NEW)
+-set(CMAKE_POLICY_DEFAULT_CMP0069 NEW)
+-include(CheckIPOSupported)
+-check_ipo_supported(RESULT ipo_supported OUTPUT ipo_supported_output)
+-if(ipo_supported)
+-    set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
+-else()
+-    message(WARNING "IPO is not supported: ${ipo_supported_output}")
+-endif()
+ 
+ if(USE_SYSTEM_NCNN)

media-gfx/waifu2x-ncnn-vulkan/waifu2x-ncnn-vulkan-20210521.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -23,6 +23,10 @@ DEPEND="
 	${RDEPEND}
 	dev-util/vulkan-headers"
 
+PATCHES=(
+	"${FILESDIR}"/${PN}-20210521-no-lto.patch
+)
+
 src_prepare() {
 	CMAKE_USE_DIR="${S}/src"
 	cmake_src_prepare