free up space in conan builds. fix warning on grpc example. add missing api link to dll target

Author: dbarker

.github/workflows/cmake_install.yml

@@ -254,6 +254,7 @@ jobs:
         run: |
           sudo -E ./ci/setup_cmake.sh
           conan install install/conan/conanfile_stable.txt --build=missing -of /home/runner/conan -s build_type=${BUILD_TYPE} -s compiler.cppstd=${CXX_STANDARD}
+          conan cache clean --source --build
       - name: Run Tests (static libs)
         env:
           BUILD_SHARED_LIBS: 'OFF'
@@ -297,6 +298,7 @@ jobs:
         run: |
           sudo -E ./ci/setup_cmake.sh
           conan install install/conan/conanfile_latest.txt --build=missing -of /home/runner/conan -s build_type=${BUILD_TYPE} -s compiler.cppstd=${CXX_STANDARD}
+          conan cache clean --source --build
       - name: Run Tests (static libs)
         env:
           BUILD_SHARED_LIBS: 'OFF'
@@ -330,7 +332,9 @@ jobs:
         ./ci/setup_cmake_macos.sh
         conan profile detect --force
     - name: Install or build all dependencies with Conan
-      run: conan install install/conan/conanfile_stable.txt --build=missing -of /Users/runner/conan -s build_type=${BUILD_TYPE} -s compiler.cppstd=${CXX_STANDARD}
+      run: |
+        conan install install/conan/conanfile_stable.txt --build=missing -of /Users/runner/conan -s build_type=${BUILD_TYPE} -s compiler.cppstd=${CXX_STANDARD}
+        conan cache clean --source --build
     - name: Run Tests (static libs)
       env:
         BUILD_SHARED_LIBS: 'OFF'

ci/do_ci.ps1

@@ -467,13 +467,13 @@ switch ($action) {
     $CMAKE_OPTIONS = @(
     "-DCMAKE_CXX_STANDARD=17",
     "-DVCPKG_TARGET_TRIPLET=x64-windows",
-    "-DCMAKE_TOOLCHAIN_FILE=$VCPKG_DIR/scripts/buildsystems/vcpkg.cmake"
+    "-DCMAKE_TOOLCHAIN_FILE=$VCPKG_DIR/scripts/buildsystems/vcpkg.cmake",
+    "-DOPENTELEMETRY_BUILD_DLL=1"
     )
 
     cmake $SRC_DIR `
       $CMAKE_OPTIONS `
       "-DCMAKE_INSTALL_PREFIX=$INSTALL_TEST_DIR" `
-      -DOPENTELEMETRY_BUILD_DLL=1 `
       -DWITH_ABI_VERSION_1=ON `
       -DWITH_ABI_VERSION_2=OFF `
       -DWITH_THREAD_INSTRUMENTATION_PREVIEW=ON `

examples/grpc/client.cc

@@ -127,7 +127,7 @@ int main(int argc, char **argv)
   uint16_t port;
   if (argc > 1)
   {
-    port = atoi(argv[1]);
+    port = static_cast<uint16_t>(atoi(argv[1]));
   }
   else
   {

ext/src/dll/CMakeLists.txt

@@ -16,8 +16,9 @@ set_target_properties(opentelemetry_cpp PROPERTIES EXPORT_NAME
                                                    opentelemetry_cpp)
 
 target_link_libraries(
-  opentelemetry_cpp PRIVATE opentelemetry_trace
-                            opentelemetry_exporter_ostream_span)
+  opentelemetry_cpp
+  PUBLIC opentelemetry_api
+  PRIVATE opentelemetry_trace opentelemetry_exporter_ostream_span)
 
 target_include_directories(
   opentelemetry_cpp