[BUILD] Alternative way of exporting symbols (generating .def file)

ext/src/dll/CMakeLists.txt

@@ -50,14 +50,65 @@ if(WITH_OTLP_HTTP)
                         PRIVATE opentelemetry_exporter_otlp_http_log)
 endif()
 
+find_program(_vswhere_tool 
+NAMES vswhere 
+PATHS "$ENV{ProgramFiles\(x86\)}/Microsoft Visual Studio/Installer")
+if (NOT ${vswhere})
+message(FATAL_ERROR "Could not locate vswhere.exe - unable to locate dumpbin.exe")
+endif()
+
+execute_process(
+  COMMAND "${_vswhere_tool}" -latest -find **/dumpbin.exe
+  OUTPUT_VARIABLE DUMPBIN_PATHS
+  RESULT_VARIABLE _vs_where_exitcode
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+message(STATUS "DUMPBIN PATHS: ${DUMPBIN_PATHS} ${RESULT_VARIABLE}")
+
+string(REPLACE "\n" ";" DUMPBIN_PATHS_LIST ${DUMPBIN_PATHS})
+
+list(POP_FRONT DUMPBIN_PATHS_LIST DUMPBIN_PATH)
+
+message(STATUS "DUMPBIN PATH: ${DUMPBIN_PATH}")
+
+# find Powershell executable
+#find_program(DUMPBIN_PATH NAMES dumpbin REQUIRED)
+
+# find Powershell executable
+find_program(POWERSHELL_PATH NAMES pwsh powershell REQUIRED)
+
+set(OPENTELEMETRY_INPUT_DEF
+    "${CMAKE_CURRENT_SOURCE_DIR}/input.txt")
+
 add_custom_command(
-  OUTPUT ${OPENTELEMETRY_EXPORT_DEF}
+  OUTPUT ${OPENTELEMETRY_INPUT_DEF}
+  DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/input.src"
   COMMAND
     ${CMAKE_CXX_COMPILER}
     "-D$<JOIN:$<TARGET_PROPERTY:opentelemetry_cpp,COMPILE_DEFINITIONS>,;-D>" /EP
-    ${CMAKE_CURRENT_SOURCE_DIR}/opentelemetry_cpp.src >
+    ${CMAKE_CURRENT_SOURCE_DIR}/input.src >
+    ${OPENTELEMETRY_INPUT_DEF}
+  VERBATIM COMMAND_EXPAND_LISTS)
+
+add_custom_command(
+  OUTPUT ${OPENTELEMETRY_EXPORT_DEF}
+  DEPENDS "${OPENTELEMETRY_INPUT_DEF}" "${CMAKE_CURRENT_SOURCE_DIR}/make_def.ps1"
+  COMMAND
+    ${POWERSHELL_PATH}
+    "-ExecutionPolicy" 
+    "Bypass"
+    "-File"
+    "${CMAKE_CURRENT_SOURCE_DIR}/make_def.ps1"
+    "-dumpbin"
+    "${DUMPBIN_PATH}"
+    "-bindir"
+    ${PROJECT_BINARY_DIR}
+    "-inputfile"
+    ${OPENTELEMETRY_INPUT_DEF}
+    "-targetfile"
     ${OPENTELEMETRY_EXPORT_DEF}
-  COMMAND_EXPAND_LISTS VERBATIM)
+  VERBATIM)
 
 if(OPENTELEMETRY_INSTALL)
   install(

ext/src/dll/input.src

@@ -0,0 +1,67 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+// clang-format off
+Create@OStreamSpanExporterFactory@trace@exporter@v1@opentelemetry
+Create@SimpleSpanProcessorFactory@trace@sdk@v1@opentelemetry
+Create@TracerProviderFactory@trace@sdk@v1@opentelemetry
+Create@LoggerProviderFactory@logs@sdk@v1@opentelemetry
+Create@BatchLogRecordProcessorFactory@logs@sdk@v1@opentelemetry
+Create@SimpleLogRecordProcessorFactory@logs@sdk@v1@opentelemetry
+Create@MultiLogRecordProcessorFactory@logs@sdk@v1@opentelemetry
+ForceFlush@TracerProvider@trace@sdk@v1@opentelemetry
+ForceFlush@LoggerProvider@logs@sdk@v1@opentelemetry
+OStreamLogRecordExporter@logs@exporter@v1@opentelemetry
+Create@OStreamMetricExporterFactory@metrics@exporter@v1@opentelemetry
+Create@PeriodicExportingMetricReaderFactory@metrics@sdk@v1@opentelemetry
+Create@MeterProviderFactory@metrics@sdk@v1@opentelemetry
+Create@MeterContextFactory@metrics@sdk@v1@opentelemetry
+Create@ViewFactory@metrics@sdk@v1@opentelemetry
+Create@MeterSelectorFactory@metrics@sdk@v1@opentelemetry
+Create@InstrumentSelectorFactory@metrics@sdk@v1@opentelemetry
+AddMetricReader@MeterContext@metrics@sdk@v1@opentelemetry
+AddMetricReader@MeterProvider@metrics@sdk@v1@opentelemetry
+AddView@MeterProvider@metrics@sdk@v1@opentelemetry
+
+#if defined(WITH_OTLP_GRPC) || defined(WITH_OTLP_HTTP)
+GetOtlpDefaultTracesTimeout@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultTracesHeaders@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultLogsTimeout@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultLogsHeaders@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultMetricsTimeout@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultMetricsHeaders@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultTracesSslCertificatePath@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultMetricsSslCertificatePath@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultLogsSslCertificatePath@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultTracesSslCertificateString@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultMetricsSslCertificateString@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultLogsSslCertificateString@otlp@exporter@v1@opentelemetry
+#endif  // defined(WITH_OTLP_GRPC) || defined(WITH_OTLP_HTTP)
+
+#if defined(WITH_OTLP_GRPC)
+Create@OtlpGrpcExporterFactory@otlp@exporter@v1@opentelemetry
+Create@OtlpGrpcMetricExporterFactory@otlp@exporter@v1@opentelemetry
+Create@OtlpGrpcLogRecordExporterFactory@otlp@exporter@v1@opentelemetry
+OtlpGrpcExporterOptions@otlp@exporter@v1@opentelemetry
+OtlpGrpcMetricExporterOptions@otlp@exporter@v1@opentelemetry
+OtlpGrpcLogRecordExporterOptions@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultGrpcTracesEndpoint@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultGrpcMetricsEndpoint@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultGrpcLogsEndpoint@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultGrpcTracesIsInsecure@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultGrpcMetricsIsInsecure@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultGrpcLogsIsInsecure@otlp@exporter@v1@opentelemetry
+#endif  // defined(WITH_OTLP_GRPC)
+
+#if defined(WITH_OTLP_HTTP)
+Create@OtlpHttpExporterFactory@otlp@exporter@v1@opentelemetry
+Create@OtlpHttpMetricExporterFactory@otlp@exporter@v1@opentelemetry
+Create@OtlpHttpLogRecordExporterFactory@otlp@exporter@v1@opentelemetry
+OtlpHttpExporterOptions@otlp@exporter@v1@opentelemetry
+OtlpHttpMetricExporterOptions@otlp@exporter@v1@opentelemetry
+OtlpHttpLogRecordExporterOptions@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultHttpTracesEndpoint@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultHttpMetricsEndpoint@otlp@exporter@v1@opentelemetry
+GetOtlpDefaultHttpLogsEndpoint@otlp@exporter@v1@opentelemetry
+#endif  // defined(WITH_OTLP_HTTP)
+// clang-format on

ext/src/dll/make_def.ps1

@@ -0,0 +1,8 @@
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+param ($dumpbin, $bindir, $inputfile, $targetfile)
+
+ "LIBRARY opentelemetry_cpp`r`nEXPORTS`r`n" > $targetfile
+
+ Get-ChildItem -Verbose -Path $bindir/*.lib -Recurse | % { & "$dumpbin" /SYMBOLS $_ | Select-String -Pattern @(Get-Content -Verbose -Path "$inputfile" | Where-Object { $_.Trim() -ne '' } | % { "External\s+\|\s+(\?+[0-9]?$_[^\s]*)\s+\((.*)\)$" }) | % { "; $($_.matches.groups[2])`r`n$($_.matches.groups[1])" } >> $targetfile }