--- a/src/ruby/ext/grpc/extconf.rb	2021-06-01 12:00:16.187000000 +0000

+++ b/src/ruby/ext/grpc/extconf.rb	2021-06-01 12:33:17.973000000 +0000

@@ -49,11 +49,12 @@ ENV['ARCH_FLAGS'] = RbConfig::CONFIG['AR

 ENV['ARCH_FLAGS'] = '-arch i386 -arch x86_64' if RUBY_PLATFORM =~ /darwin/

 ENV['CPPFLAGS'] = '-DGPR_BACKWARDS_COMPATIBILITY_MODE'

-output_dir = File.expand_path(RbConfig::CONFIG['topdir'])

+static = ENV["STATIC"]

+output_dir = File.expand_path(grpc_root)

 grpc_lib_dir = File.join(output_dir, 'libs', grpc_config)

 ENV['BUILDDIR'] = output_dir

-unless windows

+unless windows or !static

   puts 'Building internal gRPC into ' + grpc_lib_dir

   nproc = 4

   nproc = Etc.nprocessors if Etc.respond_to? :nprocessors

@@ -77,7 +77,7 @@ ext_export_file = File.join(grpc_root, '

 $LDFLAGS << ' -Wl,--version-script="' + ext_export_file + '.gcc"' if RUBY_PLATFORM =~ /linux/

 $LDFLAGS << ' -Wl,-exported_symbols_list,"' + ext_export_file + '.clang"' if RUBY_PLATFORM =~ /darwin/

-$LDFLAGS << ' ' + File.join(grpc_lib_dir, 'libgrpc.a') unless windows

+$LDFLAGS << ' ' + File.join(grpc_lib_dir, 'libgrpc.a') unless windows || !static

 if grpc_config == 'gcov'

   $CFLAGS << ' -O0 -fprofile-arcs -ftest-coverage'

   $LDFLAGS << ' -fprofile-arcs -ftest-coverage -rdynamic'

@@ -88,7 +88,13 @@ if grpc_config == 'dbg'

 end

 $LDFLAGS << ' -Wl,-wrap,memcpy' if RUBY_PLATFORM =~ /linux/

-$LDFLAGS << ' -static-libgcc -static-libstdc++' if RUBY_PLATFORM =~ /linux/

+linux = RUBY_PLATFORM =~ /linux/

+if static

+  if linux && RUBY_ENGINE != 'truffleruby'

+    $LDFLAGS << ' -static-libgcc -static-libstdc++'

+  end

+  $LDFLAGS << ' -static' if windows

+end

 $LDFLAGS << ' -static' if windows

 $CFLAGS << ' -std=c99 '