games-emulation/dolphin: xgetbv tweak for gcc-8

Package-Manager: Portage-2.3.43, Repoman-2.3.10

games-emulation/dolphin/dolphin-5.0.ebuild

@@ -70,7 +70,10 @@ DEPEND="${RDEPEND}
 	sys-devel/gettext
 	virtual/pkgconfig"
 
-PATCHES=( "${FILESDIR}"/${P}-CHAR_WIDTH-collision.patch )
+PATCHES=(
+	"${FILESDIR}"/${P}-CHAR_WIDTH-collision.patch
+	"${FILESDIR}"/${P}-xgetbv.patch
+)
 
 src_prepare() {
 	cmake-utils_src_prepare

games-emulation/dolphin/files/dolphin-5.0-xgetbv.patch

@@ -0,0 +1,24 @@
+Workaround collision of _xgetbv intrinsic redeclaration:
+
+Source/Core/Common/x64CPUDetect.cpp:45:12: error: ambiguating new declaration of ‘u64 _xgetbv(u32)’
+ static u64 _xgetbv(u32 index)
+            ^~~~~~~
+In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/8.1.0/include/x86intrin.h:74,
+                 from Source/Core/Common/Intrinsics.h:12,
+                 from Source/Core/Common/x64CPUDetect.cpp:10:
+/usr/lib/gcc/x86_64-pc-linux-gnu/8.1.0/include/xsaveintrin.h:60:1: note: old declaration ‘long long int _xgetbv(unsigned int)’
+ _xgetbv (unsigned int __A)
+ ^~~~~~~
+
+Upstream fied it in
+    commit 823fdda30c38be953c3d425874f2adeabed2b5a8
+    intrinsics: stop defining _xgetbv/_XCR_XFEATURE_ENABLED_MASK, which are reserved
+
+--- a/Source/Core/Common/x64CPUDetect.cpp
++++ b/Source/Core/Common/x64CPUDetect.cpp
+@@ -45 +45 @@ static inline void __cpuid(int info[4], int function_id)
+-static u64 _xgetbv(u32 index)
++static u64 _xgetbv_dolphin(u32 index)
+@@ -137 +137 @@ void CPUInfo::Detect()
+-			if ((_xgetbv(_XCR_XFEATURE_ENABLED_MASK) & 0x6) == 0x6)
++			if ((_xgetbv_dolphin(_XCR_XFEATURE_ENABLED_MASK) & 0x6) == 0x6)