CXX-2748 Disable generation of built tree targets files (#1024)

* CXX-2748 Disable generation of build tree targets files

* Fix target of BSONCXX_STATIC compile definition for bsoncxx_add_library()

* Fix missing find_dependency() specification in CMake package config files

* Fix include directive for libbson and libmongoc headers

* CXX-2749 Unconditionally use <core/...> for mnmlstc/core headers

* Address ENABLE_AUTOMATIC_INIT_OR_CLEANUP warnings

Author: eramongodb

.mci.yml

@@ -1119,10 +1119,9 @@ tasks:
             export CMAKE
             CMAKE="$(find_cmake_latest)"
             command -v "$CMAKE"
-            cd build
-            $CMAKE ..
-            $CMAKE --build . -- -j $(nproc)
-            ./hello_mongocxx
+            $CMAKE -S . -B build -DENABLE_AUTOMATIC_INIT_AND_CLEANUP=OFF
+            $CMAKE --build build
+            ./build/hello_mongocxx
 
     - name: debian-package-build
       commands:

CHANGELOG.md

@@ -24,3 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 - Explicitly document that throwing an exception from an APM callback is undefined behavior.
 - Do not prematurely install mnmlstc/core headers during the CMake build step.
+- Require a C Driver CMake package is found via `find_dependency()` for all installed CXX Driver package configurations.
+
+### Removed
+- Remove support for exported targets from the CMake project build tree.

CMakeLists.txt

@@ -53,16 +53,6 @@ if(TARGET mongoc_shared OR TARGET mongoc_static)
   # If these targets exist, then libmongoc has already been included as a project
   # sub-directory
   message (STATUS "Found libmongoc targets declared in current build scope; version not checked")
-
-  if(NOT MONGOCXX_LINK_WITH_STATIC_MONGOC)
-    set(libmongoc_target mongoc_shared)
-  else()
-    set(libmongoc_target mongoc_static)
-  endif()
-
-  if(MONGOCXX_BUILD_STATIC)
-    set(mongocxx_pkg_dep "find_dependency(mongoc-1.0 REQUIRED)")
-  endif()
 else()
     find_package(mongoc-${LIBMONGOC_REQUIRED_ABI_VERSION} ${LIBMONGOC_REQUIRED_VERSION} QUIET)
     if(mongoc-${LIBMONGOC_REQUIRED_ABI_VERSION}_FOUND)

cmake/BsoncxxUtil.cmake

@@ -25,7 +25,7 @@ function(bsoncxx_add_library TARGET OUTPUT_NAME LINK_TYPE)
     endif()
 
     if(LINK_TYPE STREQUAL "STATIC")
-        target_compile_definitions(bsoncxx_static PUBLIC BSONCXX_STATIC)
+        target_compile_definitions(${TARGET} PUBLIC BSONCXX_STATIC)
     endif()
 
     if(BSONCXX_POLY_USE_MNMLSTC AND NOT BSONCXX_POLY_USE_SYSTEM_MNMLSTC)
@@ -82,11 +82,6 @@ function(bsoncxx_install BSONCXX_TARGET_LIST BSONCXX_PKG_DEP BSONCXX_BOOST_PKG_D
         @ONLY
     )
 
-    export(EXPORT bsoncxx_targets
-        NAMESPACE mongo::
-        FILE "${CMAKE_CURRENT_BINARY_DIR}/bsoncxx_targets.cmake"
-    )
-
     install(EXPORT bsoncxx_targets
         NAMESPACE mongo::
         FILE bsoncxx_targets.cmake

cmake/MongocxxUtil.cmake

@@ -71,11 +71,6 @@ function(mongocxx_install MONGOCXX_TARGET_LIST MONGOCXX_PKG_DEP)
         @ONLY
     )
 
-    export(EXPORT mongocxx_targets
-        NAMESPACE mongo::
-        FILE "${CMAKE_CURRENT_BINARY_DIR}/mongocxx_targets.cmake"
-    )
-
     install(EXPORT mongocxx_targets
         NAMESPACE mongo::
         FILE mongocxx_targets.cmake

src/bsoncxx/CMakeLists.txt

@@ -108,9 +108,7 @@ if(TARGET bson_shared OR TARGET bson_static)
     set(libbson_target bson_static)
   endif()
 
-  if(BSONCXX_BUILD_STATIC)
-    set(bsoncxx_pkg_dep "find_dependency(bson-1.0 REQUIRED)")
-  endif()
+  set(bsoncxx_pkg_dep "find_dependency(bson-${LIBBSON_REQUIRED_ABI_VERSION} REQUIRED)")
 else()
   # Attempt to find libbson by new package name (without lib).
   find_package(bson-${LIBBSON_REQUIRED_ABI_VERSION} ${LIBBSON_REQUIRED_VERSION} QUIET)
@@ -122,10 +120,7 @@ else()
     else()
       set(libbson_target mongo::bson_static)
     endif()
-
-    if(BSONCXX_BUILD_STATIC)
-      set(bsoncxx_pkg_dep "find_dependency(bson-1.0 REQUIRED)")
-    endif()
+    set(bsoncxx_pkg_dep "find_dependency(bson-${LIBBSON_REQUIRED_ABI_VERSION} REQUIRED)")
   else()
     # Require package of old libbson name (with lib).
     if(NOT BSONCXX_LINK_WITH_STATIC_MONGOC)
@@ -134,18 +129,14 @@ else()
       set(libbson_target ${BSON_LIBRARIES})
       set(libbson_include_directories ${BSON_INCLUDE_DIRS})
       set(libbson_definitions ${BSON_DEFINITIONS})
-      if(BSONCXX_BUILD_STATIC)
-        set(bsoncxx_pkg_dep "find_dependency(libbson-1.0 REQUIRED)")
-      endif()
+      set(bsoncxx_pkg_dep "find_dependency(libbson-${LIBBSON_REQUIRED_ABI_VERSION} REQUIRED)")
     else()
       find_package(libbson-static-${LIBBSON_REQUIRED_ABI_VERSION} ${LIBBSON_REQUIRED_VERSION} REQUIRED)
       message ("found libbson version ${BSON_STATIC_VERSION}")
       set(libbson_target ${BSON_STATIC_LIBRARIES})
       set(libbson_include_directories ${BSON_STATIC_INCLUDE_DIRS})
       set(libbson_definitions ${BSON_STATIC_DEFINITIONS})
-      if(BSONCXX_BUILD_STATIC)
-        set(bsoncxx_pkg_dep "find_dependency(libbson-static-1.0 REQUIRED)")
-      endif()
+      set(bsoncxx_pkg_dep "find_dependency(libbson-static-${LIBBSON_REQUIRED_ABI_VERSION} REQUIRED)")
     endif()
   endif()
 endif()
@@ -232,7 +223,6 @@ endif()
 if(BSONCXX_BUILD_STATIC)
     bsoncxx_install_deprecated_cmake(bsoncxx-static)
     list(APPEND bsoncxx_target_list bsoncxx_static)
-    set(bsoncxx_pkg_dep "find_dependency(bson-1.0 REQUIRED)")
 endif()
 if(BSONCXX_POLY_USE_BOOST)
     set(bsoncxx_boost_pkg_dep "find_dependency(Boost 1.56.0 REQUIRED)")

src/bsoncxx/private/libbson.hh

@@ -24,7 +24,7 @@
 // TODO: CXX-1366 Disable MSVC warnings for libbson
 #endif
 
-#include <bson.h>
+#include <bson/bson.h>
 
 #if defined(__clang__)
 #pragma clang diagnostic pop

src/bsoncxx/stdx/make_unique.hpp

@@ -18,11 +18,7 @@
 
 #if defined(BSONCXX_POLY_USE_MNMLSTC)
 
-#if defined(MONGO_CXX_DRIVER_COMPILING) || defined(BSONCXX_POLY_USE_SYSTEM_MNMLSTC)
 #include <core/memory.hpp>
-#else
-#include <bsoncxx/third_party/mnmlstc/core/memory.hpp>
-#endif
 
 namespace bsoncxx {
 BSONCXX_INLINE_NAMESPACE_BEGIN

src/bsoncxx/stdx/optional.hpp

@@ -18,11 +18,7 @@
 
 #if defined(BSONCXX_POLY_USE_MNMLSTC)
 
-#if defined(MONGO_CXX_DRIVER_COMPILING) || defined(BSONCXX_POLY_USE_SYSTEM_MNMLSTC)
 #include <core/optional.hpp>
-#else
-#include <bsoncxx/third_party/mnmlstc/core/optional.hpp>
-#endif
 
 namespace bsoncxx {
 BSONCXX_INLINE_NAMESPACE_BEGIN

src/bsoncxx/stdx/string_view.hpp

@@ -18,11 +18,7 @@
 
 #if defined(BSONCXX_POLY_USE_MNMLSTC)
 
-#if defined(MONGO_CXX_DRIVER_COMPILING) || defined(BSONCXX_POLY_USE_SYSTEM_MNMLSTC)
 #include <core/string.hpp>
-#else
-#include <bsoncxx/third_party/mnmlstc/core/string.hpp>
-#endif
 
 namespace bsoncxx {
 BSONCXX_INLINE_NAMESPACE_BEGIN