Accepting request 1110833 from home:pazhukov

fix `gRPCConfig.cmake`

OBS-URL: https://build.opensuse.org/request/show/1110833
OBS-URL: https://build.opensuse.org/package/show/devel:tools/grpc?expand=0&rev=156

fix_grpconfig_cmake.patch

@@ -0,0 +1,32 @@
+From 117dc80eb43021dd5619023ef6d02d0d6ec7ae7a Mon Sep 17 00:00:00 2001
+From: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
+Date: Wed, 7 Jun 2023 13:06:49 +0800
+Subject: [PATCH] [Build] fix `gRPCConfig.cmake`
+
+Without this change, calling `find_package(gRPC REQUIRED)` errors out
+with
+
+    CMake Error at /opt/homebrew/lib/cmake/grpc/gRPCConfig.cmake:8 (find_dependency):
+      Unknown CMake command "find_dependency".
+
+The issue is that `find_dependency` is provided by the
+`CMakeFindDependencyMacro` module[^1], so we need to `include` it before
+use.
+
+[^1]: https://cmake.org/cmake/help/v3.26/module/CMakeFindDependencyMacro.html
+---
+ cmake/protobuf.cmake | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/cmake/protobuf.cmake b/cmake/protobuf.cmake
+index 80181c62186c..fab2eb00e964 100644
+--- a/cmake/protobuf.cmake
++++ b/cmake/protobuf.cmake
+@@ -86,6 +86,6 @@ elseif(gRPC_PROTOBUF_PROVIDER STREQUAL "package")
+         set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE ${PROTOBUF_PROTOC_EXECUTABLE})
+       endif()
+     endif()
+-    set(_gRPC_FIND_PROTOBUF "find_dependency(Protobuf CONFIG)")
++    set(_gRPC_FIND_PROTOBUF "include(CMakeFindDependencyMacro)\nfind_dependency(Protobuf CONFIG)")
+   endif()
+ endif()

grpc.spec

@@ -39,6 +39,7 @@ BuildRequires:  pkgconfig(openssl) >= 1.0.1
 BuildRequires:  pkgconfig(protobuf) >= 22
 BuildRequires:  pkgconfig(re2)
 BuildRequires:  pkgconfig(zlib)
+Patch0:         fix_grpconfig_cmake.patch
 
 %description
 The reference implementation of the gRPC protocol, done on top of