Fix ppc64le build with gcc 10

xxhash-gcc10-altivec.patch

@@ -0,0 +1,31 @@
+From 3e3f5f7c2f0782ea190d30bba04d274babeec04f Mon Sep 17 00:00:00 2001
+From: Mattias Ellert <mattias.ellert@physics.uu.se>
+Date: Fri, 7 Feb 2020 07:38:48 +0100
+Subject: [PATCH] Fix build with gcc 10 on ppc64le
+
+When gcc was updated to version 10 in Fedora the build of the xxhash
+package started failing. The compilation succeeds, but the checks
+trigger an error. This change, suggested by the maintainers of the gcc
+package in Fedora, addresses the issue. F0r details see:
+
+https://bugzilla.redhat.com/show_bug.cgi?id=1798908
+---
+ xxh3.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/xxh3.h b/xxh3.h
+index a3a81bc..3fa6c1f 100644
+--- a/xxh3.h
++++ b/xxh3.h
+@@ -219,7 +219,7 @@ XXH_FORCE_INLINE U64x2 XXH_vec_revb(U64x2 val)
+  * Additionally, the intrinsic wasn't added until GCC 8, despite existing for a while.
+  * Clang has an easy way to control this, we can just use the builtin which doesn't swap.
+  * GCC needs inline assembly. */
+-#if __has_builtin(__builtin_altivec_vmuleuw)
++#if defined(__clang__) && __has_builtin(__builtin_altivec_vmuleuw)
+ #  define XXH_vec_mulo __builtin_altivec_vmulouw
+ #  define XXH_vec_mule __builtin_altivec_vmuleuw
+ #else
+-- 
+2.24.1
+

xxhash.spec

@@ -1,6 +1,6 @@
 Name:		xxhash
 Version:	0.7.2
-Release:	2%{?dist}
+Release:	3%{?dist}
 Summary:	Extremely fast hash algorithm
 
 #		The source for the library (xxhash.c and xxhash.h) is BSD
@@ -8,6 +8,10 @@ Summary:	Extremely fast hash algorithm
 License:	BSD and GPLv2+
 URL:		http://www.xxhash.com/
 Source0:	https://github.com/Cyan4973/xxHash/archive/v%{version}/%{name}-%{version}.tar.gz
+#		Fix ppc64le build with gcc 10
+#		https://bugzilla.redhat.com/show_bug.cgi?id=1798908
+#		https://github.com/Cyan4973/xxHash/pull/297
+Patch0:		%{name}-gcc10-altivec.patch
 
 BuildRequires:	gcc
 
@@ -39,6 +43,7 @@ Development files for the xxhash library
 
 %prep
 %setup -q -n xxHash-%{version}
+%patch0 -p1
 
 %build
 make %{?_smp_mflags} CFLAGS="%{optflags}" MOREFLAGS="%{?__global_ldflags} -fPIC"
@@ -69,6 +74,9 @@ make test-xxhsum-c
 %{_libdir}/libxxhash.so
 
 %changelog
+* Fri Feb 07 2020 Mattias Ellert <mattias.ellert@physics.uu.se> - 0.7.2-3
+- Fix ppc64le build with gcc 10
+
 * Fri Jan 31 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.7.2-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild