CXXCBC-639: Allow to build both static and shared libraries

To avoid issues with generation of cmake helper scripts the following
changes has been made:

* interface libraries that are used to carry compiler options and flags
  are declared as IMPORTED to avoid unnecessary INTERFACE_LINK
  dependencies for the static library

* jsonsl, asio and couchbase_backtrace libraries are not linked as a
  targets, but rather as a object files directly. This is also done to
  avoid announcing them as a transitive dependencies. All these
  libraries are hidden and never exposed.

* for other third-party dependencies do not disable install tasks, which
  generate export files

This patch also removes some unused cmake files (of crypto, sasl and
operations/management directories).

Fixes #701

CMakeLists.txt

@@ -35,14 +35,14 @@ include(cmake/PreventInSourceBuilds.cmake)
 include(cmake/StandardProjectSettings.cmake)
 
 # 'library' to set the c++ standard / compile-time options requested
-add_library(project_options INTERFACE)
+add_library(project_options INTERFACE IMPORTED)
 target_compile_features(project_options INTERFACE cxx_std_17)
 if(MSVC)
   target_compile_options(project_options INTERFACE /bigobj)
 endif()
 
 # 'library' to use the warnings specified in CompilerWarnings.cmake
-add_library(project_warnings INTERFACE)
+add_library(project_warnings INTERFACE IMPORTED)
 
 include(cmake/BuildTracing.cmake)
 
@@ -506,7 +506,9 @@ foreach(TARGET ${couchbase_cxx_client_LIBRARIES})
 
   target_include_directories(
     ${TARGET} SYSTEM PRIVATE $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/third_party/cxx_function>
-                             $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/third_party/expected/include>)
+                             $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/third_party/expected/include>
+                             $<BUILD_INTERFACE:$<TARGET_PROPERTY:jsonsl,INTERFACE_INCLUDE_DIRECTORIES>>
+                             $<BUILD_INTERFACE:$<TARGET_PROPERTY:asio,INTERFACE_INCLUDE_DIRECTORIES>>)
 
   target_include_directories(${TARGET} PUBLIC $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
 
@@ -517,13 +519,13 @@ foreach(TARGET ${couchbase_cxx_client_LIBRARIES})
             project_warnings
             spdlog::spdlog
             Microsoft.GSL::GSL
-            asio
             llhttp::llhttp
             taocpp::json
             snappy
-            jsonsl
-            couchbase_backtrace
-            hdr_histogram_static)
+            hdr_histogram_static
+            $<TARGET_OBJECTS:asio>
+            $<TARGET_OBJECTS:couchbase_backtrace>
+            $<TARGET_OBJECTS:jsonsl>)
 
   if(WIN32)
     target_link_libraries(${TARGET} PRIVATE iphlpapi)

cmake/ThirdPartyDependencies.cmake

@@ -28,14 +28,10 @@ if(NOT TARGET spdlog::spdlog)
     "gabime/spdlog"
     EXCLUDE_FROM_ALL ON
     OPTIONS
-    "SPDLOG_INSTALL OFF"
     "BUILD_SHARED_LIBS OFF"
     "CMAKE_C_VISIBILITY_PRESET hidden"
     "CMAKE_CXX_VISIBILITY_PRESET hidden"
     "CMAKE_POSITION_INDEPENDENT_CODE ON"
-    "NO_CMAKE_SYSTEM_PATH ON"
-    "NO_CMAKE_INSTALL_PREFIX ON"
-    "NO_CMAKE_SYSTEM_PACKAGE_REGISTRY ON"
     "SPDLOG_BUILD_SHARED OFF"
     "SPDLOG_FMT_EXTERNAL OFF")
 endif()
@@ -51,7 +47,6 @@ if(NOT TARGET Microsoft.GSL::GSL)
     "microsoft/gsl"
     EXCLUDE_FROM_ALL ON
     OPTIONS
-    "GSL_INSTALL OFF"
     "CMAKE_C_VISIBILITY_PRESET hidden"
     "CMAKE_CXX_VISIBILITY_PRESET hidden"
     "CMAKE_POSITION_INDEPENDENT_CODE ON")
@@ -111,7 +106,6 @@ if(NOT TARGET snappy)
     "google/snappy"
     EXCLUDE_FROM_ALL ON
     OPTIONS
-    "SNAPPY_INSTALL OFF"
     "CMAKE_C_VISIBILITY_PRESET hidden"
     "CMAKE_CXX_VISIBILITY_PRESET hidden"
     "CMAKE_POSITION_INDEPENDENT_CODE ON"