Add vcpkg support

Summary

While exploring vcpkg I realized that with Conan 2 it should be possible to actually offer both Conan and vcpkg as package managers. This MR brings support for compilation with vcpkg to the cpplib.

Related to #81 (closed)

Focus

• A few files were added to support vcpkg, and some changes had to be made to the CMakeLists.txt file to make it compatible with both Conan 2 and vcpkg.
• Instructions on how to build with vcpkg can be found in docs/Install_develop.rst.
• A GitLab CI step to test building with vcpkg was added to the pipeline.

Test Environment

Follow new build instructions to test vcpkg.

Check List for the Author

Please, prepare your MR for a review. Be sure to write a summary and a focus and create gitlab comments for the reviewer. They should guide the reviewer through the changes, explain your changes and also point out open questions. For further good practices have a look at our review guidelines

• All automated tests pass
• Reference related issues
• Up-to-date CHANGELOG.md (or not necessary)
• Up-to-date JSON schema (or not necessary)
• Appropriate user and developer documentation (or not necessary)
  • How do I use the software? Assume "stupid" users.
  • How do I develop or debug the software? Assume novice developers.
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• Appropriate user and developer documentation (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there specifications? Are they satisfied?

For further good practices have a look at our review guidelines.

CMakeLists.txt

@@ -20,9 +20,6 @@
 
 cmake_minimum_required(VERSION 3.13)
 
-set(CMAKE_TOOLCHAIN_FILE "${CMAKE_CURRENT_SOURCE_DIR}/vcpkg/scripts/buildsystems/vcpkg.cmake"
-  CACHE STRING "Vcpkg toolchain file")
-
 set(libcaosdb_VERSION 0.3.0)
 set(libcaosdb_COMPATIBLE_SERVER_VERSION_MAJOR 0)
 set(libcaosdb_COMPATIBLE_SERVER_VERSION_MINOR 9)
@@ -79,95 +76,76 @@ set(PROJECT_INCLUDE_DIR "${PROJECT_SOURCE_DIR}/include")
 add_subdirectory(src)
 add_subdirectory(include)
 add_subdirectory(doc)
-add_subdirectory(proto)
-
 
 ####################################################################
 ### CODE GENERATION (WITH GRPC)
 ####################################################################
 
-# TODO: Replace this with the protobuf_generate_cpp function
-
-
-# # Protobuf/Grpc source files
-# set(PROTO_FILES
-#     ${PROJECT_SOURCE_DIR}/proto/proto/caosdb/info/v1/main.proto
-#     ${PROJECT_SOURCE_DIR}/proto/proto/caosdb/entity/v1/main.proto
-# )
+find_package(Protobuf CONFIG REQUIRED)
 
+# Protobuf/Grpc source files
+set(PROTO_FILES
+    ${PROJECT_SOURCE_DIR}/proto/proto/caosdb/info/v1/main.proto
+    ${PROJECT_SOURCE_DIR}/proto/proto/caosdb/entity/v1/main.proto
+)
 
+IF (BUILD_ACM)
+    list(APPEND PROTO_FILES
+         ${PROJECT_SOURCE_DIR}/proto/proto/caosdb/acm/v1alpha1/main.proto
+         )
+ENDIF()
 
-# IF (BUILD_ACM)
-#     list(APPEND PROTO_FILES
-#          ${PROJECT_SOURCE_DIR}/proto/proto/caosdb/acm/v1alpha1/main.proto
-#          )
-# ENDIF()
-
-# find_package(protobuf REQUIRED)
-# include_directories(${Protobuf_INCLUDE_DIRS})
-# include_directories(${CMAKE_CURRENT_BINARY_DIR})
-# # protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS ${PROTO_FILES})
-# # protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS ${PROJECT_SOURCE_DIR}/proto/proto/caosdb/info/v1/main.proto)
-# protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS ${PROJECT_SOURCE_DIR}/proto/proto/caosdb/entity/v1/main.proto)
-# message(STATUS "PROTO_FILES: ${PROTO_FILES}")
-# message(STATUS "PROTO_SRCS: ${PROTO_SRCS}")
-# message(STATUS "PROTO_HDRS: ${PROTO_HDRS}")
-
-# set(PROTO_PATH ${PROJECT_SOURCE_DIR}/proto/proto)
+set(PROTO_PATH ${PROJECT_SOURCE_DIR}/proto/proto)
 
+set(_PROTOBUF_PROTOC ${Protobuf_PROTOC_EXECUTABLE})
 # compiler binaries
+IF (WIN32)
+    set(_GRPC_CPP_PLUGIN_EXECUTABLE "${CMAKE_BINARY_DIR}/build_tools/grpc_cpp_plugin.exe")
+ELSE()
+    set(_GRPC_CPP_PLUGIN_EXECUTABLE "${CMAKE_BINARY_DIR}/build_tools/grpc_cpp_plugin")
+ENDIF()
 
-
-
-# IF (WIN32)
-#     set(_PROTOBUF_PROTOC "${CMAKE_BINARY_DIR}/build_tools/protoc.exe")
-#     set(_GRPC_CPP_PLUGIN_EXECUTABLE "${CMAKE_BINARY_DIR}/build_tools/grpc_cpp_plugin.exe")
-# ELSE()
-#     set(_PROTOBUF_PROTOC "${CMAKE_BINARY_DIR}/build_tools/protoc")
-#     set(_GRPC_CPP_PLUGIN_EXECUTABLE "${CMAKE_BINARY_DIR}/build_tools/grpc_cpp_plugin")
-# ENDIF()
-
-# # Generated sources
-# list(LENGTH PROTO_FILES len_proto_files)
-# math(EXPR len_proto_files "${len_proto_files} - 1")
-# foreach(i RANGE "${len_proto_files}")
-#     list(GET PROTO_FILES ${i} next_proto_file)
-
-#     # strip away the prefix path and the ".proto" suffix
-#     string(REPLACE
-#         "${PROJECT_SOURCE_DIR}/proto/proto/caosdb/"
-#         ""
-#         next_proto_module
-#         "${next_proto_file}")
-#     string(REPLACE
-#         ".proto"
-#         ""
-#         next_proto_module
-#         "${next_proto_module}")
-#     set(next_proto_src
-#         "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}.pb.cc")
-#     set(next_proto_hdr
-#         "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}.pb.h")
-#     set(next_grpc_src
-#         "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}.grpc.pb.cc")
-#     set(next_grpc_hdr
-#         "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}.grpc.pb.h")
-#     list(APPEND GRPC_GENERATED_HEADERS "${next_proto_hdr}" "${next_grpc_hdr}")
-#     list(APPEND GRPC_GENERATED_SOURCES "${next_proto_src}" "${next_grpc_src}")
-# endforeach()
-
-# set(GRPC_GENERATED
-#     ${GRPC_GENERATED_SOURCES}
-#     ${GRPC_GENERATED_HEADERS})
-# add_custom_command(
-#       OUTPUT ${GRPC_GENERATED}
-#       COMMAND ${_PROTOBUF_PROTOC}
-#       ARGS --grpc_out "${CMAKE_CURRENT_BINARY_DIR}/include"
-#         --cpp_out "${CMAKE_CURRENT_BINARY_DIR}/include"
-#         -I "${PROTO_PATH}"
-#         --plugin=protoc-gen-grpc="${_GRPC_CPP_PLUGIN_EXECUTABLE}"
-#         ${PROTO_FILES}
-#       DEPENDS ${PROTO_FILES})
+# Generated sources
+list(LENGTH PROTO_FILES len_proto_files)
+math(EXPR len_proto_files "${len_proto_files} - 1")
+foreach(i RANGE "${len_proto_files}")
+    list(GET PROTO_FILES ${i} next_proto_file)
+
+    # strip away the prefix path and the ".proto" suffix
+    string(REPLACE
+        "${PROJECT_SOURCE_DIR}/proto/proto/caosdb/"
+        ""
+        next_proto_module
+        "${next_proto_file}")
+    string(REPLACE
+        ".proto"
+        ""
+        next_proto_module
+        "${next_proto_module}")
+    set(next_proto_src
+        "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}.pb.cc")
+    set(next_proto_hdr
+        "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}.pb.h")
+    set(next_grpc_src
+        "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}.grpc.pb.cc")
+    set(next_grpc_hdr
+        "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}.grpc.pb.h")
+    list(APPEND GRPC_GENERATED_HEADERS "${next_proto_hdr}" "${next_grpc_hdr}")
+    list(APPEND GRPC_GENERATED_SOURCES "${next_proto_src}" "${next_grpc_src}")
+endforeach()
+
+set(GRPC_GENERATED
+    ${GRPC_GENERATED_SOURCES}
+    ${GRPC_GENERATED_HEADERS})
+add_custom_command(
+      OUTPUT ${GRPC_GENERATED}
+      COMMAND ${_PROTOBUF_PROTOC}
+      ARGS --grpc_out "${CMAKE_CURRENT_BINARY_DIR}/include"
+        --cpp_out "${CMAKE_CURRENT_BINARY_DIR}/include"
+        -I "${PROTO_PATH}"
+        --plugin=protoc-gen-grpc="${_GRPC_CPP_PLUGIN_EXECUTABLE}"
+        ${PROTO_FILES}
+      DEPENDS ${PROTO_FILES})
 
 # show generated files
 message(DEBUG "GRPC_GENERATED: ${GRPC_GENERATED}")
@@ -183,32 +161,9 @@ message(DEBUG "GRPC_GENERATED: ${GRPC_GENERATED}")
 ###############################################################################
 
 find_package(gRPC CONFIG REQUIRED)
-# find_package(protobuf CONFIG REQUIRED)
-
-# boost
 find_package(Boost REQUIRED)
-# find_package(boost_smart_ptr CONFIG REQUIRED)
-# find_package(boost_filesystem CONFIG REQUIRED)
-# find_package(boost_json CONFIG REQUIRED)
-# find_package(boost_log CONFIG REQUIRED)
-# find_package(boost_thread CONFIG REQUIRED)
-# find_package(boost_beast CONFIG REQUIRED)
-find_package(Boost COMPONENTS json REQUIRED)
-find_package(Boost COMPONENTS filesystem REQUIRED)
-find_package(Boost COMPONENTS log REQUIRED)
-find_package(Boost COMPONENTS thread REQUIRED)
-find_package(Boost COMPONENTS system REQUIRED)
-# find_package(Boost COMPONENTS smart_ptr REQUIRED)
-find_package(Boost COMPONENTS beast REQUIRED)
-
-
 find_package(GTest REQUIRED)
 
-
-set(dependencies  
-    gRPC::gpr gRPC::grpc gRPC::grpc++ protobuf::libprotoc protobuf::libprotobuf
-    Boost::filesystem Boost::json Boost::log Boost::thread)
-
 # print include directories for debugging
 message(DEBUG "CMAKE_INCLUDE_PATH: ${CMAKE_INCLUDE_PATH}")
 message(DEBUG "PROTOBUF_INCLUDE_DIRS: ${PROTOBUF_INCLUDE_DIRS}")
@@ -242,7 +197,7 @@ else()
     add_library(caosdb
         SHARED ${libcaosdb_INCL} ${libcaosdb_SRC} ${GRPC_GENERATED})
      target_link_libraries(caosdb
-        ${dependencies}
+        grpc::grpc protobuf::protobuf boost::boost
         stdc++fs
     )
      set(LIBCAOSDB caosdb)
@@ -259,54 +214,54 @@ target_include_directories(caosdb PUBLIC
 
 
 
-# # libccaosdb
-# # ----------
-# add_library(ccaosdb SHARED src/ccaosdb.cpp)
-# target_link_libraries(ccaosdb
-#     dependencies
-#     ${LIBCAOSDB}
-#     stdc++fs
-# )
-# target_include_directories(ccaosdb PUBLIC
-#     $<BUILD_INTERFACE:${libcaosdb_SOURCE_DIR}/include>
-#     $<BUILD_INTERFACE:${libcaosdb_BINARY_DIR}/include>
-#     $<INSTALL_INTERFACE:include>
-# )
-
-
-# # ccaosdbcli
-# # ----------
-# add_executable(ccaosdbcli EXCLUDE_FROM_ALL src/ccaosdbcli.c)
-# target_include_directories(ccaosdbcli PUBLIC
-#     $<BUILD_INTERFACE:${libcaosdb_SOURCE_DIR}/include>
-#     $<BUILD_INTERFACE:${libcaosdb_BINARY_DIR}/include>
-#     $<INSTALL_INTERFACE:include>
-# )
-# target_include_directories(ccaosdbcli SYSTEM PUBLIC
-#     ${CONAN_INCLUDE_DIRS}
-# )
-
-# target_link_libraries(ccaosdbcli
-#     dependencies
-#     ${LIBCAOSDB}
-#     ccaosdb
-# )
-
-# # cxxcaosdbcli
-# # ------------
-# add_executable(cxxcaosdbcli EXCLUDE_FROM_ALL src/cxxcaosdbcli.cpp)
-# target_include_directories(cxxcaosdbcli PUBLIC
-#     $<BUILD_INTERFACE:${libcaosdb_SOURCE_DIR}/include>
-#     $<BUILD_INTERFACE:${libcaosdb_BINARY_DIR}/include>
-#     $<INSTALL_INTERFACE:include>
-# )
-# target_include_directories(cxxcaosdbcli SYSTEM PUBLIC
-#     ${CONAN_INCLUDE_DIRS}
-# )
-# target_link_libraries(cxxcaosdbcli
-#     ${LIBCAOSDB}
-#     dependencies
-# )
+# libccaosdb
+# ----------
+add_library(ccaosdb SHARED src/ccaosdb.cpp)
+target_link_libraries(ccaosdb
+    grpc::grpc protobuf::protobuf boost::boost
+    ${LIBCAOSDB}
+    stdc++fs
+)
+target_include_directories(ccaosdb PUBLIC
+    $<BUILD_INTERFACE:${libcaosdb_SOURCE_DIR}/include>
+    $<BUILD_INTERFACE:${libcaosdb_BINARY_DIR}/include>
+    $<INSTALL_INTERFACE:include>
+)
+
+
+# ccaosdbcli
+# ----------
+add_executable(ccaosdbcli EXCLUDE_FROM_ALL src/ccaosdbcli.c)
+target_include_directories(ccaosdbcli PUBLIC
+    $<BUILD_INTERFACE:${libcaosdb_SOURCE_DIR}/include>
+    $<BUILD_INTERFACE:${libcaosdb_BINARY_DIR}/include>
+    $<INSTALL_INTERFACE:include>
+)
+target_include_directories(ccaosdbcli SYSTEM PUBLIC
+    ${CONAN_INCLUDE_DIRS}
+)
+
+target_link_libraries(ccaosdbcli
+    grpc::grpc protobuf::protobuf boost::boost
+    ${LIBCAOSDB}
+    ccaosdb
+)
+
+# cxxcaosdbcli
+# ------------
+add_executable(cxxcaosdbcli EXCLUDE_FROM_ALL src/cxxcaosdbcli.cpp)
+target_include_directories(cxxcaosdbcli PUBLIC
+    $<BUILD_INTERFACE:${libcaosdb_SOURCE_DIR}/include>
+    $<BUILD_INTERFACE:${libcaosdb_BINARY_DIR}/include>
+    $<INSTALL_INTERFACE:include>
+)
+target_include_directories(cxxcaosdbcli SYSTEM PUBLIC
+    ${CONAN_INCLUDE_DIRS}
+)
+target_link_libraries(cxxcaosdbcli
+    ${LIBCAOSDB}
+    grpc::grpc protobuf::protobuf boost::boost
+)
 
 
 
@@ -314,213 +269,213 @@ target_include_directories(caosdb PUBLIC
 ### LINTING with CLANG-TIDY and INCLUDE-WHAT-YOU-USE
 #######################################################
 
-# include(CheckCXXCompilerFlag)
-# include(CheckCCompilerFlag)
-
-# function(add_compiler_flag flag)
-#     string(FIND "${CMAKE_CXX_FLAGS}" "${flag}" cxx_present)
-#     if(cxx_present EQUAL -1)
-#         check_cxx_compiler_flag("${flag}" flag_supported)
-#         if(flag_supported)
-#             set(PEDANTIC_CMAKE_CXX_FLAGS "${PEDANTIC_CMAKE_CXX_FLAGS} ${flag}" PARENT_SCOPE)
-#         endif()
-#         unset(flag_supported CACHE)
-#     endif()
-#     unset(cxx_present CACHE)
-
-#     string(FIND "${CMAKE_C_FLAGS}" "${flag}" c_present)
-#     if(c_present EQUAL -1)
-#         check_cxx_compiler_flag("${flag}" flag_supported)
-#         if(flag_supported)
-#             set(PEDANTIC_CMAKE_C_FLAGS "${PEDANTIC_CMAKE_C_FLAGS} ${flag}" PARENT_SCOPE)
-#         endif()
-#         unset(flag_supported CACHE)
-#     endif()
-#     unset(c_present CACHE)
-# endfunction()
-
-
-
-# option(LINTING "Enable linting with clang-tidy and iwyu when in non-Debug build-type" OFF)
-# if("${CMAKE_BUILD_TYPE}" MATCHES "Debug" OR LINTING)
-#     set(_LINTING ON)
-# endif()
-# option(SKIP_LINTING "Skip linting even when in Debug build-type" OFF)
-# if("${CMAKE_BUILD_TYPE}" MATCHES "Debug" AND SKIP_LINTING)
-#     message(WARNING "Skipping linting due to SKIP_LINTING option")
-#     set(_LINTING OFF)
-# endif()
-# if(_LINTING)
-
-#     ### set paranoid compiler flags
-#     add_compiler_flag("-Wall")
-#     add_compiler_flag("-Wextra")
-#     add_compiler_flag("-pedantic")
-#     # add_compiler_flag("-Werror") # removed until issue #71 is resolved
-
-#     message(STATUS "PEDANTIC_CMAKE_CXX_FLAGS: [${PEDANTIC_CMAKE_CXX_FLAGS}]")
-#     set(TARGET_CAOSDB_COMPILE_FLAGS "${TARGET_CAOSDB_COMPILE_FLAGS} ${PEDANTIC_CMAKE_CXX_FLAGS}")
-#     set(TARGET_CCAOSDB_COMPILE_FLAGS "${TARGET_CCAOSDB_COMPILE_FLAGS} ${PEDANTIC_CMAKE_C_FLAGS}")
-#     set(TARGET_CXXCAOSDBCLI_COMPILE_FLAGS "${TARGET_CXXCAOSDBCLI_COMPILE_FLAGS} ${PEDANTIC_CMAKE_CXX_FLAGS}")
-#     set(TARGET_CCAOSDBCLI_COMPILE_FLAGS "${TARGET_CCAOSDBCLI_COMPILE_FLAGS} ${PEDANTIC_CMAKE_C_FLAGS}")
-
-#     set_target_properties(caosdb PROPERTIES
-#         COMPILE_FLAGS "${TARGET_CAOSDB_COMPILE_FLAGS}")
-#     set_target_properties(ccaosdb PROPERTIES
-#         COMPILE_FLAGS "${TARGET_CCAOSDB_COMPILE_FLAGS}")
-#     set_target_properties(cxxcaosdbcli PROPERTIES
-#         COMPILE_FLAGS "${TARGET_CXXCAOSDBCLI_COMPILE_FLAGS}")
-#     set_target_properties(ccaosdbcli PROPERTIES
-#         COMPILE_FLAGS "${TARGET_CCAOSDBCLI_COMPILE_FLAGS}")
-
-#     find_program(iwyu
-#         NAMES include-what-you-use iwyu
-#         PATHS ${CMAKE_SOURCE_DIR}/tools/include-what-you-use/${iwyu_os}/bin)
-#     if(NOT iwyu)
-#         message(WARNING "include-what-you-use: Not found")
-#     else()
-#         message(STATUS "include-what-you-use: ${iwyu}")
-#         set(_CMAKE_CXX_INCLUDE_WHAT_YOU_USE ${iwyu}
-#             "-Xiwyu" "--cxx17ns" "-Xiwyu" "--no_fwd_decls")
-
-#         set_target_properties(caosdb PROPERTIES
-#             CXX_INCLUDE_WHAT_YOU_USE "${_CMAKE_CXX_INCLUDE_WHAT_YOU_USE}"
-#             )
-#         set_target_properties(cxxcaosdbcli PROPERTIES
-#             CXX_INCLUDE_WHAT_YOU_USE "${_CMAKE_CXX_INCLUDE_WHAT_YOU_USE}"
-#             )
-#         set_target_properties(ccaosdbcli PROPERTIES
-#             C_INCLUDE_WHAT_YOU_USE "${_CMAKE_CXX_INCLUDE_WHAT_YOU_USE}"
-#             )
-#     endif()
-
-#     find_program(clang_tidy NAMES clang-tidy clang-tidy-11)
-#     if(NOT clang_tidy)
-#         message(WARNING "clang-tidy: Not found")
-#     else()
-#         message(STATUS "clang-tidy: ${clang_tidy}")
-#         set(_CMAKE_CXX_CLANG_TIDY_CHECKS
-#             "--checks=*,-fuchsia-*,-llvmlibc-*,-readability-convert-member-functions-to-static,-cppcoreguidelines-pro-bounds-array-to-pointer-decay,-hicpp-no-array-decay,-llvm-else-after-return,-readability-else-after-return,-modernize-use-trailing-return-type,-bugprone-branch-clone,-altera-*,-misc-include-cleaner,-readability-identifier-*,-llvm-include-order,-misc-const-correctness")
-#         set(_CMAKE_C_CLANG_TIDY_CHECKS "${_CMAKE_CXX_CLANG_TIDY_CHECKS}")
-#         set(_CMAKE_CXX_CLANG_TIDY "${clang_tidy}"
-#             "--header-filter=caosdb/.*[^\(\.pb\.h\)]$")
-#             # "--warnings-as-errors=*")
-#         set(_CMAKE_C_CLANG_TIDY "${_CMAKE_CXX_CLANG_TIDY}")
-#         option(AUTO_FIX_LINTING "Append --fix option to clang-tidy" OFF)
-#         if(AUTO_FIX_LINTING)
-#             set(_CMAKE_CXX_CLANG_TIDY "${_CMAKE_CXX_CLANG_TIDY};--fix")
-#         endif()
-#         message(STATUS "Using clang-tidy with
-#             '${_CMAKE_CXX_CLANG_TIDY};${_CMAKE_CXX_CLANG_TIDY_CHECKS}'")
-#         set_target_properties(caosdb PROPERTIES
-#             CXX_CLANG_TIDY "${_CMAKE_CXX_CLANG_TIDY};${_CMAKE_CXX_CLANG_TIDY_CHECKS}"
-#             )
-#         set_target_properties(cxxcaosdbcli PROPERTIES
-#             CXX_CLANG_TIDY "${_CMAKE_CXX_CLANG_TIDY};${_CMAKE_CXX_CLANG_TIDY_CHECKS}"
-#             )
-#         set_target_properties(ccaosdb PROPERTIES
-#             C_CLANG_TIDY "${_CMAKE_C_CLANG_TIDY};${_CMAKE_C_CLANG_TIDY_CHECKS}"
-#             )
-#         set_target_properties(ccaosdbcli PROPERTIES
-#             C_CLANG_TIDY "${_CMAKE_C_CLANG_TIDY};${_CMAKE_C_CLANG_TIDY_CHECKS}"
-#             )
-#     endif()
-# endif()
-
-
-# #######################################################
-# ### UNIT TEST
-# #######################################################
-
-# if("${CMAKE_BUILD_TYPE}" MATCHES "Debug")
-#     enable_testing()
-#     add_subdirectory(test)
-# endif()
-
-# # ###############################################
-# # ############ INSTALLATION #####################
-# # ###############################################
-
-# set(libcaosdb_INCLUDE_DEST "include/caosdb")
-# set(libcaosdb_LIB_DEST "lib")
-
-# set(CMAKE_INSTALL_PREFIX "$ENV{HOME}/.local/")
-# install(
-#     # targets to install
-#     TARGETS ${LIBCAOSDB} ccaosdb
-#     # name of the CMake "export group" containing the targets we want to install
-#     EXPORT caosdbTargets
-#     # Dynamic, static library and include destination locations after running
-#     # "make install"
-#     LIBRARY DESTINATION ${libcaosdb_LIB_DEST}
-#     ARCHIVE DESTINATION ${libcaosdb_LIB_DEST}
-#     INCLUDES DESTINATION ${libcaosdb_INCLUDE_DEST}
-# )
-
-
-# set(libcaosdb_CMAKE_DEST "${libcaosdb_LIB_DEST}/cmake/caosdb")
-# install(
-#     # The export we want to save (matches name defined above containing the
-#     # install targets)
-#     EXPORT caosdbTargets
-#     # CMake file in which to store the export's information
-#     FILE  caosdbTargets.cmake
-#     # Namespace prepends all targets in the export (when we import later, we
-#     # will use caosdb::caosdb)
-#     NAMESPACE caosdb::
-#     # where to place the resulting file (here, we're putting it with the library)
-#     DESTINATION ${libcaosdb_CMAKE_DEST}
-# )
-
-# install(FILES ${libcaosdb_INCL} ${PROJECT_SOURCE_DIR}/include/ccaosdb.h DESTINATION ${libcaosdb_INCLUDE_DEST})
-# foreach(i RANGE "${len_proto_files}")
-#     list(GET PROTO_FILES ${i} next_proto_file)
-
-#     # strip away the prefix path and the ".proto" suffix
-#     string(REPLACE
-#         "${PROJECT_SOURCE_DIR}/proto/proto/caosdb/"
-#         ""
-#         next_proto_module
-#         "${next_proto_file}")
-#     string(REPLACE
-#         "/main.proto"
-#         ""
-#         next_proto_module
-#         "${next_proto_module}")
-#     set(next_proto_hdr
-#         "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}/main.pb.h")
-#     set(next_grpc_hdr
-#         "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}/main.grpc.pb.h")
-#     install(FILES ${next_proto_hdr} ${next_grpc_hdr} DESTINATION
-#         ${libcaosdb_INCLUDE_DEST}/${next_proto_module})
-# endforeach()
-
-# install(FILES ${PROJECT_SOURCE_DIR}/caosdbConfig.cmake
-#     DESTINATION ${libcaosdb_CMAKE_DEST})
-
-# #set_property(TARGET caosdb PROPERTY VERSION ${libcaosdb_VERSION})
-# include(CMakePackageConfigHelpers)
-# write_basic_package_version_file(
-#     "${PROJECT_SOURCE_DIR}/caosdbConfigVersion.cmake"
-#   VERSION ${libcaosdb_VERSION}
-#   COMPATIBILITY AnyNewerVersion
-# )
-# install(FILES ${PROJECT_SOURCE_DIR}/caosdbConfigVersion.cmake
-#     DESTINATION ${libcaosdb_CMAKE_DEST})
-
-# #######################################################
-# ### code formatting with clang-format
-# #######################################################
-# option(AUTOFORMATTING "call clang-format at configure time" ON)
-# if(AUTOFORMATTING AND NOT SKIP_LINTING)
-#     find_program(clang_format NAMES clang-format-11 clang-format)
-#     file(GLOB format_test_sources test/*.cpp test/*.h test/*.h.in)
-#     execute_process(COMMAND ${clang_format} -i --verbose ${libcaosdb_INCL}
-#         ${libcaosdb_SRC} ${libcaosdb_TEST_SRC}
-#         ${PROJECT_SOURCE_DIR}/src/cxxcaosdbcli.cpp
-#         ${PROJECT_SOURCE_DIR}/src/ccaosdbcli.c
-#         ${PROJECT_SOURCE_DIR}/src/ccaosdb.cpp
-#         ${PROJECT_SOURCE_DIR}/include/ccaosdb.h
-#         ${format_test_sources}
-#         WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
-# endif()
+include(CheckCXXCompilerFlag)
+include(CheckCCompilerFlag)
+
+function(add_compiler_flag flag)
+    string(FIND "${CMAKE_CXX_FLAGS}" "${flag}" cxx_present)
+    if(cxx_present EQUAL -1)
+        check_cxx_compiler_flag("${flag}" flag_supported)
+        if(flag_supported)
+            set(PEDANTIC_CMAKE_CXX_FLAGS "${PEDANTIC_CMAKE_CXX_FLAGS} ${flag}" PARENT_SCOPE)
+        endif()
+        unset(flag_supported CACHE)
+    endif()
+    unset(cxx_present CACHE)
+
+    string(FIND "${CMAKE_C_FLAGS}" "${flag}" c_present)
+    if(c_present EQUAL -1)
+        check_cxx_compiler_flag("${flag}" flag_supported)
+        if(flag_supported)
+            set(PEDANTIC_CMAKE_C_FLAGS "${PEDANTIC_CMAKE_C_FLAGS} ${flag}" PARENT_SCOPE)
+        endif()
+        unset(flag_supported CACHE)
+    endif()
+    unset(c_present CACHE)
+endfunction()
+
+
+
+option(LINTING "Enable linting with clang-tidy and iwyu when in non-Debug build-type" OFF)
+if("${CMAKE_BUILD_TYPE}" MATCHES "Debug" OR LINTING)
+    set(_LINTING ON)
+endif()
+option(SKIP_LINTING "Skip linting even when in Debug build-type" OFF)
+if("${CMAKE_BUILD_TYPE}" MATCHES "Debug" AND SKIP_LINTING)
+    message(WARNING "Skipping linting due to SKIP_LINTING option")
+    set(_LINTING OFF)
+endif()
+if(_LINTING)
+
+    ### set paranoid compiler flags
+    add_compiler_flag("-Wall")
+    add_compiler_flag("-Wextra")
+    add_compiler_flag("-pedantic")
+    # add_compiler_flag("-Werror") # removed until issue #71 is resolved
+
+    message(STATUS "PEDANTIC_CMAKE_CXX_FLAGS: [${PEDANTIC_CMAKE_CXX_FLAGS}]")
+    set(TARGET_CAOSDB_COMPILE_FLAGS "${TARGET_CAOSDB_COMPILE_FLAGS} ${PEDANTIC_CMAKE_CXX_FLAGS}")
+    set(TARGET_CCAOSDB_COMPILE_FLAGS "${TARGET_CCAOSDB_COMPILE_FLAGS} ${PEDANTIC_CMAKE_C_FLAGS}")
+    set(TARGET_CXXCAOSDBCLI_COMPILE_FLAGS "${TARGET_CXXCAOSDBCLI_COMPILE_FLAGS} ${PEDANTIC_CMAKE_CXX_FLAGS}")
+    set(TARGET_CCAOSDBCLI_COMPILE_FLAGS "${TARGET_CCAOSDBCLI_COMPILE_FLAGS} ${PEDANTIC_CMAKE_C_FLAGS}")
+
+    set_target_properties(caosdb PROPERTIES
+        COMPILE_FLAGS "${TARGET_CAOSDB_COMPILE_FLAGS}")
+    set_target_properties(ccaosdb PROPERTIES
+        COMPILE_FLAGS "${TARGET_CCAOSDB_COMPILE_FLAGS}")
+    set_target_properties(cxxcaosdbcli PROPERTIES
+        COMPILE_FLAGS "${TARGET_CXXCAOSDBCLI_COMPILE_FLAGS}")
+    set_target_properties(ccaosdbcli PROPERTIES
+        COMPILE_FLAGS "${TARGET_CCAOSDBCLI_COMPILE_FLAGS}")
+
+    find_program(iwyu
+        NAMES include-what-you-use iwyu
+        PATHS ${CMAKE_SOURCE_DIR}/tools/include-what-you-use/${iwyu_os}/bin)
+    if(NOT iwyu)
+        message(WARNING "include-what-you-use: Not found")
+    else()
+        message(STATUS "include-what-you-use: ${iwyu}")
+        set(_CMAKE_CXX_INCLUDE_WHAT_YOU_USE ${iwyu}
+            "-Xiwyu" "--cxx17ns" "-Xiwyu" "--no_fwd_decls")
+
+        set_target_properties(caosdb PROPERTIES
+            CXX_INCLUDE_WHAT_YOU_USE "${_CMAKE_CXX_INCLUDE_WHAT_YOU_USE}"
+            )
+        set_target_properties(cxxcaosdbcli PROPERTIES
+            CXX_INCLUDE_WHAT_YOU_USE "${_CMAKE_CXX_INCLUDE_WHAT_YOU_USE}"
+            )
+        set_target_properties(ccaosdbcli PROPERTIES
+            C_INCLUDE_WHAT_YOU_USE "${_CMAKE_CXX_INCLUDE_WHAT_YOU_USE}"
+            )
+    endif()
+
+    find_program(clang_tidy NAMES clang-tidy clang-tidy-11)
+    if(NOT clang_tidy)
+        message(WARNING "clang-tidy: Not found")
+    else()
+        message(STATUS "clang-tidy: ${clang_tidy}")
+        set(_CMAKE_CXX_CLANG_TIDY_CHECKS
+            "--checks=*,-fuchsia-*,-llvmlibc-*,-readability-convert-member-functions-to-static,-cppcoreguidelines-pro-bounds-array-to-pointer-decay,-hicpp-no-array-decay,-llvm-else-after-return,-readability-else-after-return,-modernize-use-trailing-return-type,-bugprone-branch-clone,-altera-*,-misc-include-cleaner,-readability-identifier-*,-llvm-include-order,-misc-const-correctness")
+        set(_CMAKE_C_CLANG_TIDY_CHECKS "${_CMAKE_CXX_CLANG_TIDY_CHECKS}")
+        set(_CMAKE_CXX_CLANG_TIDY "${clang_tidy}"
+            "--header-filter=caosdb/.*[^\(\.pb\.h\)]$")
+            # "--warnings-as-errors=*")
+        set(_CMAKE_C_CLANG_TIDY "${_CMAKE_CXX_CLANG_TIDY}")
+        option(AUTO_FIX_LINTING "Append --fix option to clang-tidy" OFF)
+        if(AUTO_FIX_LINTING)
+            set(_CMAKE_CXX_CLANG_TIDY "${_CMAKE_CXX_CLANG_TIDY};--fix")
+        endif()
+        message(STATUS "Using clang-tidy with
+            '${_CMAKE_CXX_CLANG_TIDY};${_CMAKE_CXX_CLANG_TIDY_CHECKS}'")
+        set_target_properties(caosdb PROPERTIES
+            CXX_CLANG_TIDY "${_CMAKE_CXX_CLANG_TIDY};${_CMAKE_CXX_CLANG_TIDY_CHECKS}"
+            )
+        set_target_properties(cxxcaosdbcli PROPERTIES
+            CXX_CLANG_TIDY "${_CMAKE_CXX_CLANG_TIDY};${_CMAKE_CXX_CLANG_TIDY_CHECKS}"
+            )
+        set_target_properties(ccaosdb PROPERTIES
+            C_CLANG_TIDY "${_CMAKE_C_CLANG_TIDY};${_CMAKE_C_CLANG_TIDY_CHECKS}"
+            )
+        set_target_properties(ccaosdbcli PROPERTIES
+            C_CLANG_TIDY "${_CMAKE_C_CLANG_TIDY};${_CMAKE_C_CLANG_TIDY_CHECKS}"
+            )
+    endif()
+endif()
+
+
+#######################################################
+### UNIT TEST
+#######################################################
+
+if("${CMAKE_BUILD_TYPE}" MATCHES "Debug")
+    enable_testing()
+    add_subdirectory(test)
+endif()
+
+# ###############################################
+# ############ INSTALLATION #####################
+# ###############################################
+
+set(libcaosdb_INCLUDE_DEST "include/caosdb")
+set(libcaosdb_LIB_DEST "lib")
+
+set(CMAKE_INSTALL_PREFIX "$ENV{HOME}/.local/")
+install(
+    # targets to install
+    TARGETS ${LIBCAOSDB} ccaosdb
+    # name of the CMake "export group" containing the targets we want to install
+    EXPORT caosdbTargets
+    # Dynamic, static library and include destination locations after running
+    # "make install"
+    LIBRARY DESTINATION ${libcaosdb_LIB_DEST}
+    ARCHIVE DESTINATION ${libcaosdb_LIB_DEST}
+    INCLUDES DESTINATION ${libcaosdb_INCLUDE_DEST}
+)
+
+
+set(libcaosdb_CMAKE_DEST "${libcaosdb_LIB_DEST}/cmake/caosdb")
+install(
+    # The export we want to save (matches name defined above containing the
+    # install targets)
+    EXPORT caosdbTargets
+    # CMake file in which to store the export's information
+    FILE  caosdbTargets.cmake
+    # Namespace prepends all targets in the export (when we import later, we
+    # will use caosdb::caosdb)
+    NAMESPACE caosdb::
+    # where to place the resulting file (here, we're putting it with the library)
+    DESTINATION ${libcaosdb_CMAKE_DEST}
+)
+
+install(FILES ${libcaosdb_INCL} ${PROJECT_SOURCE_DIR}/include/ccaosdb.h DESTINATION ${libcaosdb_INCLUDE_DEST})
+foreach(i RANGE "${len_proto_files}")
+    list(GET PROTO_FILES ${i} next_proto_file)
+
+    # strip away the prefix path and the ".proto" suffix
+    string(REPLACE
+        "${PROJECT_SOURCE_DIR}/proto/proto/caosdb/"
+        ""
+        next_proto_module
+        "${next_proto_file}")
+    string(REPLACE
+        "/main.proto"
+        ""
+        next_proto_module
+        "${next_proto_module}")
+    set(next_proto_hdr
+        "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}/main.pb.h")
+    set(next_grpc_hdr
+        "${CMAKE_CURRENT_BINARY_DIR}/include/caosdb/${next_proto_module}/main.grpc.pb.h")
+    install(FILES ${next_proto_hdr} ${next_grpc_hdr} DESTINATION
+        ${libcaosdb_INCLUDE_DEST}/${next_proto_module})
+endforeach()
+
+install(FILES ${PROJECT_SOURCE_DIR}/caosdbConfig.cmake
+    DESTINATION ${libcaosdb_CMAKE_DEST})
+
+#set_property(TARGET caosdb PROPERTY VERSION ${libcaosdb_VERSION})
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(
+    "${PROJECT_SOURCE_DIR}/caosdbConfigVersion.cmake"
+  VERSION ${libcaosdb_VERSION}
+  COMPATIBILITY AnyNewerVersion
+)
+install(FILES ${PROJECT_SOURCE_DIR}/caosdbConfigVersion.cmake
+    DESTINATION ${libcaosdb_CMAKE_DEST})
+
+#######################################################
+### code formatting with clang-format
+#######################################################
+option(AUTOFORMATTING "call clang-format at configure time" ON)
+if(AUTOFORMATTING AND NOT SKIP_LINTING)
+    find_program(clang_format NAMES clang-format-11 clang-format)
+    file(GLOB format_test_sources test/*.cpp test/*.h test/*.h.in)
+    execute_process(COMMAND ${clang_format} -i --verbose ${libcaosdb_INCL}
+        ${libcaosdb_SRC} ${libcaosdb_TEST_SRC}
+        ${PROJECT_SOURCE_DIR}/src/cxxcaosdbcli.cpp
+        ${PROJECT_SOURCE_DIR}/src/ccaosdbcli.c
+        ${PROJECT_SOURCE_DIR}/src/ccaosdb.cpp
+        ${PROJECT_SOURCE_DIR}/include/ccaosdb.h
+        ${format_test_sources}
+        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+endif()