user/ruby3.0-grpc: move from backports + use ruby 3.0

user/grpc/ruby-use-shared-libs.patch

@@ -0,0 +1,57 @@
+From: Jakub Jirutka <jakub@jirutka.cz>
+Date: Wed, 24 Aug 2022 21:20:22 +0200
+Subject: [PATCH] Link with shared libraries, don't embed anything
+
+- Don't statically link openssl, zlib and cares.
+- Don't build and statically link libgrpc, link shared libgrpc.
+- Don't statically link libgcc and libstdc++.
+
+--- a/src/ruby/ext/grpc/extconf.rb
++++ b/src/ruby/ext/grpc/extconf.rb
+@@ -45,9 +45,9 @@
+   ENV['ARFLAGS'] = '-o'
+ end
+ 
+-ENV['EMBED_OPENSSL'] = 'true'
+-ENV['EMBED_ZLIB'] = 'true'
+-ENV['EMBED_CARES'] = 'true'
++ENV['EMBED_OPENSSL'] = 'false'
++ENV['EMBED_ZLIB'] = 'false'
++ENV['EMBED_CARES'] = 'false'
+ 
+ ENV['ARCH_FLAGS'] = RbConfig::CONFIG['ARCH_FLAG']
+ if darwin && !cross_compiling
+@@ -65,23 +65,15 @@
+ output_dir = File.expand_path(RbConfig::CONFIG['topdir'])
+ grpc_lib_dir = File.join(output_dir, 'libs', grpc_config)
+ ENV['BUILDDIR'] = output_dir
++$LDFLAGS << ' -L' + ENV.fetch('TOPDIR', '.')
+ 
+-unless windows
+-  puts 'Building internal gRPC into ' + grpc_lib_dir
+-  nproc = 4
+-  nproc = Etc.nprocessors * 2 if Etc.respond_to? :nprocessors
+-  make = bsd ? 'gmake' : 'make'
+-  system("#{make} -j#{nproc} -C #{grpc_root} #{grpc_lib_dir}/libgrpc.a CONFIG=#{grpc_config} Q=")
+-  exit 1 unless $? == 0
+-end
+-
+ $CFLAGS << ' -I' + File.join(grpc_root, 'include')
+ 
+ ext_export_file = File.join(grpc_root, 'src', 'ruby', 'ext', 'grpc', 'ext-export')
+ $LDFLAGS << ' -Wl,--version-script="' + ext_export_file + '.gcc"' if linux
+ $LDFLAGS << ' -Wl,-exported_symbols_list,"' + ext_export_file + '.clang"' if darwin
+ 
+-$LDFLAGS << ' ' + File.join(grpc_lib_dir, 'libgrpc.a') unless windows
++$LDFLAGS << ' -Wl,-wrap,memcpy -lgrpc' unless windows
+ if grpc_config == 'gcov'
+   $CFLAGS << ' -O0 -fprofile-arcs -ftest-coverage'
+   $LDFLAGS << ' -fprofile-arcs -ftest-coverage -rdynamic'
+@@ -92,7 +84,6 @@
+ end
+ 
+ $LDFLAGS << ' -Wl,-wrap,memcpy' if linux
+-$LDFLAGS << ' -static-libgcc -static-libstdc++' if linux
+ $LDFLAGS << ' -static' if windows
+ 
+ $CFLAGS << ' -std=c99 '