From 3baadbaa7eb5961999acc507e82c859da24b864a Mon Sep 17 00:00:00 2001
From: Sergey Avseyev <sergey.avseyev@gmail.com>
Date: Fri, 16 Oct 2020 19:27:19 +0300
Subject: [PATCH] allow to build library without tests and examples

---
 CMakeLists.txt                  | 11 +++++++++--
 exporters/memory/CMakeLists.txt | 28 +++++++++++++++-------------
 2 files changed, 24 insertions(+), 15 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 78ff1b5c89..e9b7cbc24f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,12 +16,17 @@ option(WITH_OTPROTOCOL
 option(WITH_PROMETHEUS "Whether to include the Prometheus Client in the SDK"
        OFF)
 
+option(WITH_TESTS "Whether to enable tests" ON)
+option(WITH_EXAMPLES "Whether to build examples" ON)
+
 set(WITH_PROTOBUF OFF)
 if(WITH_OTPROTOCOL)
   set(WITH_PROTOBUF ON)
 endif()
 
-include(CTest)
+if(WITH_TESTS)
+  include(CTest)
+endif()
 
 find_package(Threads)
 
@@ -58,5 +63,7 @@ include_directories(sdk)
 add_subdirectory(sdk)
 include_directories(.)
 add_subdirectory(exporters)
-add_subdirectory(examples)
+if(WITH_EXAMPLES)
+  add_subdirectory(examples)
+endif()
 add_subdirectory(ext)
diff --git a/exporters/memory/CMakeLists.txt b/exporters/memory/CMakeLists.txt
index d8475bce3c..aa8d334bd0 100644
--- a/exporters/memory/CMakeLists.txt
+++ b/exporters/memory/CMakeLists.txt
@@ -4,19 +4,21 @@ add_library(opentelemetry_exporter_in_memory INTERFACE)
 
 target_include_directories(opentelemetry_exporter_in_memory INTERFACE include/)
 
-add_executable(in_memory_span_data_test test/in_memory_span_data_test.cc)
-add_executable(in_memory_span_exporter_test
-               test/in_memory_span_exporter_test.cc)
+if(BUILD_TESTING)
+  add_executable(in_memory_span_data_test test/in_memory_span_data_test.cc)
+  add_executable(in_memory_span_exporter_test
+                 test/in_memory_span_exporter_test.cc)
 
-target_link_libraries(
-  in_memory_span_data_test ${GTEST_BOTH_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT}
-  opentelemetry_exporter_in_memory)
+  target_link_libraries(
+    in_memory_span_data_test ${GTEST_BOTH_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT}
+    opentelemetry_exporter_in_memory)
 
-target_link_libraries(
-  in_memory_span_exporter_test ${GTEST_BOTH_LIBRARIES}
-  ${CMAKE_THREAD_LIBS_INIT} opentelemetry_exporter_in_memory)
+  target_link_libraries(
+    in_memory_span_exporter_test ${GTEST_BOTH_LIBRARIES}
+    ${CMAKE_THREAD_LIBS_INIT} opentelemetry_exporter_in_memory)
 
-gtest_add_tests(TARGET in_memory_span_data_test TEST_PREFIX exporter. TEST_LIST
-                in_memory_span_data_test)
-gtest_add_tests(TARGET in_memory_span_exporter_test TEST_PREFIX exporter.
-                TEST_LIST in_memory_span_exporter_test)
+  gtest_add_tests(TARGET in_memory_span_data_test TEST_PREFIX exporter.
+                  TEST_LIST in_memory_span_data_test)
+  gtest_add_tests(TARGET in_memory_span_exporter_test TEST_PREFIX exporter.
+                  TEST_LIST in_memory_span_exporter_test)
+endif()