dev-cpp/magic_enum: don't use -Werror

Closes: https://bugs.gentoo.org/890206
Signed-off-by: Sam James <sam@gentoo.org>

dev-cpp/magic_enum/files/magic_enum-0.9.5-werror.patch

@@ -0,0 +1,22 @@
+--- a/example/CMakeLists.txt
++++ b/example/CMakeLists.txt
+@@ -2,7 +2,7 @@ include(CheckCXXCompilerFlag)
+ 
+ set(CMAKE_CXX_STANDARD 17)
+ if((CMAKE_CXX_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
+-    set(OPTIONS -Wall -Wextra -pedantic-errors -Werror)
++    set(OPTIONS -Wall -Wextra)
+ elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+     set(OPTIONS /W4 /WX)
+     if(HAS_PERMISSIVE_FLAG)
+--- a/test/CMakeLists.txt
++++ b/test/CMakeLists.txt
+@@ -12,7 +12,7 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+     check_cxx_compiler_flag(/std:c++latest HAS_CPPLATEST_FLAG)
+ elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
+     set(CMAKE_VERBOSE_MAKEFILE ON)
+-    set(OPTIONS -Wall -Wextra -pedantic-errors -Werror)
++    set(OPTIONS -Wall -Wextra)
+ 
+     check_cxx_compiler_flag(-std=c++20 HAS_CPP20_FLAG)
+     check_cxx_compiler_flag(-std=c++23 HAS_CPP23_FLAG)

dev-cpp/magic_enum/magic_enum-0.9.5.ebuild

@@ -17,6 +17,10 @@ KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv x86"
 IUSE="test"
 RESTRICT="!test? ( test )"
 
+PATCHES=(
+	"${FILESDIR}"/${PN}-0.9.5-werror.patch
+)
+
 src_configure() {
 	local mycmakeargs=(
 		-DMAGIC_ENUM_OPT_BUILD_TESTS=$(usex test)