Tests: Add FindBoost testcase for imported targets

Enable by setting CMake_TEST_FindBoost to TRUE.

Tests/CMakeLists.txt

@@ -1356,6 +1356,10 @@ ${CMake_BINARY_DIR}/bin/cmake -DDIR=dev -P ${CMake_SOURCE_DIR}/Utilities/Release
     endif()
   endif()
 
+  if(CMake_TEST_FindBoost)
+    add_subdirectory(FindBoost)
+  endif()
+
   if(CMake_TEST_FindGSL)
     add_subdirectory(FindGSL)
   endif()

Tests/FindBoost/CMakeLists.txt

@@ -0,0 +1,10 @@
+add_test(NAME FindBoost.Test COMMAND
+  ${CMAKE_CTEST_COMMAND} -C $<CONFIGURATION>
+  --build-and-test
+  "${CMake_SOURCE_DIR}/Tests/FindBoost/Test"
+  "${CMake_BINARY_DIR}/Tests/FindBoost/Test"
+  ${build_generator_args}
+  --build-project TestFindBoost
+  --build-options ${build_options}
+  --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
+  )

Tests/FindBoost/Test/CMakeLists.txt

@@ -0,0 +1,18 @@
+cmake_minimum_required(VERSION 3.1)
+project(TestFindBoost CXX)
+include(CTest)
+
+find_package(Boost REQUIRED COMPONENTS filesystem thread)
+
+add_executable(test_boost_tgt main.cxx)
+target_link_libraries(test_boost_tgt
+                      Boost::dynamic_linking
+                      Boost::disable_autolinking
+                      Boost::filesystem
+                      Boost::thread)
+add_test(NAME test_boost_tgt COMMAND test_boost_tgt)
+
+add_executable(test_boost_var main.cxx)
+target_include_directories(test_boost_var PRIVATE ${Boost_INCLUDE_DIRS})
+target_link_libraries(test_boost_var PRIVATE ${Boost_FILESYSTEM_LIBRARIES} ${Boost_SYSTEM_LIBRARIES} ${Boost_THREAD_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
+add_test(NAME test_boost_var COMMAND test_boost_var)

Tests/FindBoost/Test/main.cxx

@@ -0,0 +1,26 @@
+#include <boost/filesystem.hpp>
+#include <boost/thread.hpp>
+
+namespace
+{
+
+  boost::mutex m1;
+  boost::recursive_mutex m2;
+
+  void
+  threadmain()
+  {
+    boost::lock_guard<boost::mutex> lock1(m1);
+    boost::lock_guard<boost::recursive_mutex> lock2(m2);
+
+    boost::filesystem::path p(boost::filesystem::current_path());
+  }
+
+}
+
+int main() {
+  boost::thread foo(threadmain);
+  foo.join();
+
+  return 0;
+}