Some fixes found on MacOS

Author: malkia

.bazelrc

@@ -73,7 +73,8 @@ build:macos --strip=never --copt=-g --cxxopt=-g
 #build:macos --host_action_env=/Library/Developer/CommandLineTools/usr/bin/clang
 build:macos --action_env=CC=/opt/homebrew/opt/llvm/bin/clang
 build:macos --host_action_env=CC=/opt/homebrew/opt/llvm/bin/clang
-#build:macos --apple_generate_dsym --output_groups=+dsyms
+build:macos --apple_generate_dsym --output_groups=+dsyms
+build:macos --objc_generate_linkmap --output_groups=+linkmaps
 
 # Windows specific asan setup
 # common:asanwin --copt -fsanitize=address,bool,float-cast-overflow,integer-divide-by-zero,null,return,returns-nonnull-attribute,shift-exponent,signed-integer-overflow,unreachable,vla-bound

exporters/otlp/BUILD

@@ -769,13 +769,13 @@ otel_cc_test(
         "otlp_grpc_metric",
         "test",
     ],
-    deps = [
+    deps = dll_deps([
         ":otlp_grpc_metric_exporter",
         "//api",
         "//sdk/src/metrics",
         "@googletest//:gtest_main",
         "@opentelemetry-proto//:metrics_service_grpc_cc",
-    ],
+    ]),
 )
 
 otel_cc_test(
@@ -839,11 +839,13 @@ otel_cc_test(
         "otlp_file_metric",
         "test",
     ],
-    deps = [
+    deps = dll_deps([
         ":otlp_file_metric_exporter",
         "//api",
         "@googletest//:gtest_main",
-    ],
+        "@opentelemetry-proto//:metrics_service_proto_cc",
+        "@nlohmann_json//:json",
+    ]),
 )
 
 otel_cc_test(
@@ -854,11 +856,11 @@ otel_cc_test(
         "otlp_file_metric",
         "test",
     ],
-    deps = [
+    deps = dll_deps([
         ":otlp_file_metric_exporter",
         "//api",
         "@googletest//:gtest_main",
-    ],
+    ]),
 )
 
 otel_cc_benchmark(

exporters/otlp/include/opentelemetry/exporters/otlp/otlp_file_metric_exporter.h

@@ -23,7 +23,7 @@ namespace otlp
 /**
  * The OTLP exporter exports metrics data in OpenTelemetry Protocol (OTLP) format to file.
  */
-class OtlpFileMetricExporter final : public opentelemetry::sdk::metrics::PushMetricExporter
+class OPENTELEMETRY_EXPORT_TYPE OtlpFileMetricExporter final : public opentelemetry::sdk::metrics::PushMetricExporter
 {
 public:
   /**