Accepting request 1300994 from science

OBS-URL: https://build.opensuse.org/request/show/1300994
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/opencv3?expand=0&rev=19

opencv-ppc64le-power9.patch

@@ -0,0 +1,46 @@
+diff -Nur opencv-3.4.20/modules/core/include/opencv2/core/vsx_utils.hpp opencv-3.4.20-new/modules/core/include/opencv2/core/vsx_utils.hpp
+--- opencv-3.4.20/modules/core/include/opencv2/core/vsx_utils.hpp	2023-06-27 19:29:13.000000000 +0800
++++ opencv-3.4.20-new/modules/core/include/opencv2/core/vsx_utils.hpp	2025-08-07 21:18:01.161909977 +0800
+@@ -5,6 +5,13 @@
+ #ifndef OPENCV_HAL_VSX_UTILS_HPP
+ #define OPENCV_HAL_VSX_UTILS_HPP
+ 
++#if defined(__x86_64__) || defined(__riscv) || defined(__s390x__) || defined(__aarch64__) || defined(__loongarch64) \
++    || defined(__POWER10__) || (defined(__powerpc64__) && defined(__ARCH_PWR10__))
++  #define CV_VSX_HAS_FLOAT64_CONVERT 1
++#else
++  #define CV_VSX_HAS_FLOAT64_CONVERT 0
++#endif
++
+ #include "opencv2/core/cvdef.h"
+ 
+ #ifndef SKIP_INCLUDES
+@@ -257,8 +264,26 @@
+ VSX_IMPL_1VRG(vec_udword2, vec_dword2,  vpopcntd, vec_popcntu)
+ 
+ // converts between single and double-precision
+-VSX_REDIRECT_1RG(vec_float4,  vec_double2, vec_cvfo, __builtin_vsx_xvcvdpsp)
+-VSX_REDIRECT_1RG(vec_double2, vec_float4,  vec_cvfo, __builtin_vsx_xvcvspdp)
++#if CV_VSX_HAS_FLOAT64_CONVERT
++//  Use VSX double<->float conversion instructions (if supported by the architecture)
++    VSX_REDIRECT_1RG(vec_float4,  vec_double2, vec_cvfo, vec_floate)
++    VSX_REDIRECT_1RG(vec_double2, vec_float4,  vec_cvfo, vec_doubleo)
++#else
++//  Fallback: implement vec_cvfo using scalar operations (to ensure successful linking)
++    static inline vec_float4 vec_cvfo(const vec_double2& a)
++    {
++        float r0 = static_cast<float>(reinterpret_cast<const double*>(&a)[0]);
++        float r1 = static_cast<float>(reinterpret_cast<const double*>(&a)[1]);
++        return (vec_float4){r0, r1, 0.f, 0.f};
++    }
++
++    static inline vec_double2 vec_cvfo(const vec_float4& a)
++    {
++        double r0 = static_cast<double>(reinterpret_cast<const float*>(&a)[0]);
++        double r1 = static_cast<double>(reinterpret_cast<const float*>(&a)[2]);
++        return (vec_double2){r0, r1};
++    }
++#endif
+ 
+ // converts word and doubleword to double-precision
+ #undef vec_ctd

opencv3.changes

@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Wed Aug  6 12:09:57 UTC 2025 - Hillwood Yang <hillwood@opensuse.org>
+
+- Add opencv-ppc64le-power9.patch, fix missing vec_cvfo on POWER9 due to
+  unavailable VSX float64 conversion
+
+-------------------------------------------------------------------
+Wed May  7 10:02:57 UTC 2025 - Simon Lees <sflees@suse.de>
+
+- export CMAKE_POLICY_VERSION_MINIMUM="3.5" to ignore cmakes
+  minimum version warnings
+
 -------------------------------------------------------------------
 Tue Mar 11 12:29:00 UTC 2025 - Atri Bhattacharya <badshah400@gmail.com>
 

opencv3.spec

@@ -1,7 +1,7 @@
 #
 # spec file for package opencv3
 #
-# Copyright (c) 2025 SUSE LLC
+# Copyright (c) 2025 SUSE LLC and contributors
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -49,6 +49,9 @@ Source1:        https://github.com/opencv/opencv_contrib/archive/%{version}.tar.
 Patch1:         opencv-build-compare.patch
 # PATCH-FIX-UPSTREAM
 Patch2:         https://github.com/opencv/opencv/commit/00ca8f455e6a5588d905e3a0b268f18ee3fda5dd.patch#/opencv3-drop-numpy-distutils.patch
+# PATCH-FIX-UPSTREAM opencv-ppc64le-power9.patch hillwood@opensuse.org - Fix missing vec_cvfo on POWER9 due to unavailable VSX float64 conversion
+# https://github.com/opencv/opencv/pull/27633
+Patch3:         opencv-ppc64le-power9.patch
 BuildRequires:  cmake
 BuildRequires:  fdupes
 BuildRequires:  libeigen3-devel
@@ -180,6 +183,9 @@ cp opencv_contrib-%{version}/LICENSE LICENSE.contrib
 rm -f doc/packaging.txt
 
 %build
+# Remove cmake4 error due to not setting
+# min cmake version - sflees.de
+export CMAKE_POLICY_VERSION_MINIMUM=3.5
 # Dynamic dispatch: https://github.com/opencv/opencv/wiki/CPU-optimizations-build-options
 # x86: disable SSE on 32bit, do not dispatch AVX and later - SSE3
 #      is the highest extension available on any non-64bit x86 CPU