Factor Crossdock support out into separate build

Signed-off-by: Craig Ringer <[email protected]>

CMakeLists.txt

@@ -131,4 +131,6 @@ if (BUILD_TESTING)
   enable_testing()
   add_custom_target(check COMMAND echo "run make test instead")
 endif()
+
 add_subdirectory(src/jaegertracing)
+add_subdirectory(crossdock)

README.md

@@ -189,6 +189,16 @@ Most other cmake standard variables
 <https://cmake.org/cmake/help/latest/manual/cmake-variables.7.html> are
 supported.
 
+## Running tests
+
+A set of mocked, server-less tests may be run with
+
+    make test
+
+Integration tests using Crossdock <https://github.com/crossdock/crossdock>
+may be enabled with the `cmake` option `-DJAEGERTRACING_BUILD_CROSSDOCK=1`
+then running `make crossdock-run`.
+
 [ci-img]: https://travis-ci.org/jaegertracing/cpp-client.svg?branch=master
 [ci]: https://travis-ci.org/jaegertracing/cpp-client
 [cov-img]: https://codecov.io/gh/jaegertracing/cpp-client/branch/master/graph/badge.svg

crossdock/CMakeLists.txt

@@ -0,0 +1,38 @@
+cmake_minimum_required(VERSION 3.3)
+
+project(jaegertracing_crossdock LANGUAGES CXX)
+
+if(JAEGERTRACING_BUILD_CROSSDOCK)
+  add_executable(crossdock Server.cpp)
+  target_include_directories(crossdock PUBLIC
+    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>)
+  target_link_libraries(crossdock PUBLIC jaegertracing-static)
+
+  set(JAEGER_CROSSDOCK_URL
+"https://raw.githubusercontent.com/jaegertracing/jaeger/master/docker-compose/\
+jaeger-docker-compose.yml")
+  file(DOWNLOAD ${JAEGER_CROSSDOCK_URL} "${CMAKE_CURRENT_BINARY_DIR}/jaeger-docker-compose.yml")
+  find_program(DOCKER_COMPOSE_EXE docker-compose)
+  if (NOT DOCKER_COMPOSE_EXE)
+    message(WARNING "cannot build crossdock support requested by -DJAEGERTRACING_BUILD_CROSSDOCK: docker-compose not found")
+  else()
+    set(DOCKER_COMPOSE_CMD ${DOCKER_COMPOSE_EXE}
+        -f "${CMAKE_CURRENT_SOURCE_DIR}/docker-compose.yml"
+        -f "${CMAKE_CURRENT_BINARY_DIR}/jaeger-docker-compose.yml")
+    add_custom_target(crossdock-kill
+      COMMAND ${DOCKER_COMPOSE_CMD} kill
+      COMMAND ${DOCKER_COMPOSE_CMD} rm --force)
+    add_custom_target(crossdock-run
+      COMMAND ${DOCKER_COMPOSE_CMD} build
+      COMMAND ${DOCKER_COMPOSE_CMD} run crossdock
+      DEPENDS crossdock-kill)
+    add_custom_target(crossdock-fresh
+      COMMAND ${DOCKER_COMPOSE_CMD} pull
+      COMMAND ${DOCKER_COMPOSE_CMD} build
+      COMMAND ${DOCKER_COMPOSE_CMD} run crossdock
+      DEPENDS crossdock-kill)
+    add_custom_target(crossdock-logs
+      COMMAND ${DOCKER_COMPOSE_CMD} logs)
+    message(STATUS "crossdock enabled, use 'make crossdock-run'")
+  endif()
+endif()

src/jaegertracing/CMakeLists-UnitTest.cmake

@@ -14,38 +14,6 @@ if(BUILD_TESTING)
                             "*Test.cpp")
   endif()
 
-if(JAEGERTRACING_BUILD_CROSSDOCK)
-  set(CROSSDOCK_SRC crossdock/Server.cpp)
-  add_executable(crossdock ${CROSSDOCK_SRC})
-  target_include_directories(crossdock PUBLIC
-    $<BUILD_INTERFACE:${jaegertracing_SOURCE_DIR}/crossdock>)
-  target_link_libraries(crossdock PUBLIC jaegertracing-static)
-
-  set(JAEGER_CROSSDOCK_URL
-"https://raw.githubusercontent.com/jaegertracing/jaeger/master/docker-compose/\
-jaeger-docker-compose.yml")
-  file(DOWNLOAD ${JAEGER_CROSSDOCK_URL}
-       "${jaegertracing_SOURCE_DIR}/crossdock/jaeger-docker-compose.yml")
-  find_program(DOCKER_COMPOSE_EXE docker-compose REQUIRED)
-  set(DOCKER_COMPOSE_CMD ${DOCKER_COMPOSE_EXE}
-      -f ${jaegertracing_SOURCE_DIR}/crossdock/docker-compose.yml
-      -f ${jaegertracing_SOURCE_DIR}/crossdock/jaeger-docker-compose.yml)
-  add_custom_target(crossdock-kill
-    COMMAND ${DOCKER_COMPOSE_CMD} kill
-    COMMAND ${DOCKER_COMPOSE_CMD} rm --force)
-  add_custom_target(crossdock-run
-    COMMAND ${DOCKER_COMPOSE_CMD} build
-    COMMAND ${DOCKER_COMPOSE_CMD} run crossdock
-    DEPENDS crossdock-kill)
-  add_custom_target(crossdock-fresh
-    COMMAND ${DOCKER_COMPOSE_CMD} pull
-    COMMAND ${DOCKER_COMPOSE_CMD} build
-    COMMAND ${DOCKER_COMPOSE_CMD} run crossdock
-    DEPENDS crossdock-kill)
-  add_custom_target(crossdock-logs
-    COMMAND ${DOCKER_COMPOSE_CMD} logs)
-endif()
-
 
 if(BUILD_TESTING)
   set(TEST_SRC