CMakePM: Update cmake conan for auto-setup

Update to https://github.com/conan-io/cmake-conan/commit/
f6464d1e13ef7a47c569f5061f9607ea63339d39

Task-number: QTCREATORBUG-30169
Change-Id: Ibb8f3d353117c5c8ce21b8686cb6e2e5ee146698
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

1 files changed, 177 insertions, 66 deletions

diff --git a/src/share/3rdparty/package-manager/conan_provider.cmake b/src/share/3rdparty/package-manager/conan_provider.cmake
index d94a9d811f..e5fa9cec19 100644
--- a/src/share/3rdparty/package-manager/conan_provider.cmake
+++ b/src/share/3rdparty/package-manager/conan_provider.cmake
@@ -1,5 +1,5 @@
 # https://github.com/conan-io/cmake-conan/blob/develop2/conan_provider.cmake
-# commit: 451fa97d2c59c07b13fb4812a64b2a6391f9e781
+# commit: f6464d1e13ef7a47c569f5061f9607ea63339d39
 #
 # The MIT License (MIT)
 #
@@ -30,22 +30,26 @@ function(detect_os OS OS_API_LEVEL OS_SDK OS_SUBSYSTEM OS_VERSION)
     # it could be cross compilation
     message(STATUS "CMake-Conan: cmake_system_name=${CMAKE_SYSTEM_NAME}")
     if(CMAKE_SYSTEM_NAME AND NOT CMAKE_SYSTEM_NAME STREQUAL "Generic")
-        if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
+        if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
             set(${OS} Macos PARENT_SCOPE)
-        elseif(${CMAKE_SYSTEM_NAME} STREQUAL "QNX")
+        elseif(CMAKE_SYSTEM_NAME STREQUAL "QNX")
             set(${OS} Neutrino PARENT_SCOPE)
-        elseif(${CMAKE_SYSTEM_NAME} STREQUAL "CYGWIN")
+        elseif(CMAKE_SYSTEM_NAME STREQUAL "CYGWIN")
             set(${OS} Windows PARENT_SCOPE)
             set(${OS_SUBSYSTEM} cygwin PARENT_SCOPE)
-        elseif(${CMAKE_SYSTEM_NAME} MATCHES "^MSYS")
+        elseif(CMAKE_SYSTEM_NAME MATCHES "^MSYS")
             set(${OS} Windows PARENT_SCOPE)
             set(${OS_SUBSYSTEM} msys2 PARENT_SCOPE)
         else()
             set(${OS} ${CMAKE_SYSTEM_NAME} PARENT_SCOPE)
         endif()
-        if(${CMAKE_SYSTEM_NAME} STREQUAL "Android")
-            string(REGEX MATCH "[0-9]+" _OS_API_LEVEL ${ANDROID_PLATFORM})
-            message(STATUS "CMake-Conan: android_platform=${ANDROID_PLATFORM}")
+        if(CMAKE_SYSTEM_NAME STREQUAL "Android")
+            if(DEFINED ANDROID_PLATFORM)
+                string(REGEX MATCH "[0-9]+" _OS_API_LEVEL ${ANDROID_PLATFORM})
+            elseif(DEFINED CMAKE_SYSTEM_VERSION)
+                set(_OS_API_LEVEL ${CMAKE_SYSTEM_VERSION})
+            endif()
+            message(STATUS "CMake-Conan: android api level=${_OS_API_LEVEL}")
             set(${OS_API_LEVEL} ${_OS_API_LEVEL} PARENT_SCOPE)
         endif()
         if(CMAKE_SYSTEM_NAME MATCHES "Darwin|iOS|tvOS|watchOS")
@@ -91,15 +95,22 @@ function(detect_arch ARCH)
             message(WARNING "CMake-Conan: Multiple architectures detected, this will only work if Conan recipe(s) produce fat binaries.")
         endif()
     endif()
-    if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|ARM64|arm64" OR CMAKE_OSX_ARCHITECTURES MATCHES arm64)
+    if(CMAKE_SYSTEM_NAME MATCHES "Darwin|iOS|tvOS|watchOS" AND NOT CMAKE_OSX_ARCHITECTURES STREQUAL "")
+        set(host_arch ${CMAKE_OSX_ARCHITECTURES})
+    elseif(MSVC)
+        set(host_arch ${CMAKE_CXX_COMPILER_ARCHITECTURE_ID})
+    else()
+        set(host_arch ${CMAKE_SYSTEM_PROCESSOR})
+    endif()
+    if(host_arch MATCHES "aarch64|arm64|ARM64")
         set(_ARCH armv8)
-    elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "armv7-a|armv7l" OR CMAKE_OSX_ARCHITECTURES MATCHES armv7)
+    elseif(host_arch MATCHES "armv7|armv7-a|armv7l|ARMV7")
         set(_ARCH armv7)
-    elseif(CMAKE_OSX_ARCHITECTURES MATCHES armv7s)
+    elseif(host_arch MATCHES armv7s)
         set(_ARCH armv7s)
-    elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i686" OR CMAKE_OSX_ARCHITECTURES MATCHES i386)
+    elseif(host_arch MATCHES "i686|i386|X86")
         set(_ARCH x86)
-    elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "AMD64|amd64|x86_64" OR CMAKE_OSX_ARCHITECTURES MATCHES x86_64)
+    elseif(host_arch MATCHES "AMD64|amd64|x86_64|x64")
         set(_ARCH x86_64)
     endif()
     message(STATUS "CMake-Conan: cmake_system_processor=${_ARCH}")
@@ -114,6 +125,7 @@ function(detect_cxx_standard CXX_STANDARD)
     endif()
 endfunction()
 
+
 macro(detect_gnu_libstdcxx)
     # _CONAN_IS_GNU_LIBSTDCXX true if GNU libstdc++
     check_cxx_source_compiles("
@@ -136,6 +148,7 @@ macro(detect_gnu_libstdcxx)
     unset (_CONAN_GNU_LIBSTDCXX_IS_CXX11_ABI)
 endmacro()
 
+
 macro(detect_libcxx)
     # _CONAN_IS_LIBCXX true if LLVM libc++
     check_cxx_source_compiles("
@@ -147,10 +160,10 @@ macro(detect_libcxx)
 endmacro()
 
 
-function(detect_lib_cxx OS LIB_CXX)
-    if(${OS} STREQUAL "Android")
-        message(STATUS "CMake-Conan: android_stl=${ANDROID_STL}")
-        set(${LIB_CXX} ${ANDROID_STL} PARENT_SCOPE)
+function(detect_lib_cxx LIB_CXX)
+    if(CMAKE_SYSTEM_NAME STREQUAL "Android")
+        message(STATUS "CMake-Conan: android_stl=${CMAKE_ANDROID_STL_TYPE}")
+        set(${LIB_CXX} ${CMAKE_ANDROID_STL_TYPE} PARENT_SCOPE)
         return()
     endif()
 
@@ -207,37 +220,42 @@ function(detect_compiler COMPILER COMPILER_VERSION COMPILER_RUNTIME COMPILER_RUN
         string(SUBSTRING ${MSVC_VERSION} 0 3 _COMPILER_VERSION)
         # Configure compiler.runtime and compiler.runtime_type settings for MSVC
         if(CMAKE_MSVC_RUNTIME_LIBRARY)
-            set(_KNOWN_MSVC_RUNTIME_VALUES "")
-            list(APPEND _KNOWN_MSVC_RUNTIME_VALUES MultiThreaded MultiThreadedDLL)
-            list(APPEND _KNOWN_MSVC_RUNTIME_VALUES MultiThreadedDebug MultiThreadedDebugDLL)
-            list(APPEND _KNOWN_MSVC_RUNTIME_VALUES MultiThreaded$<$<CONFIG:Debug>:Debug> MultiThreaded$<$<CONFIG:Debug>:Debug>DLL)
-
-            # only accept the 6 possible values, otherwise we don't don't know to map this
-            if(NOT CMAKE_MSVC_RUNTIME_LIBRARY IN_LIST _KNOWN_MSVC_RUNTIME_VALUES)
-                message(FATAL_ERROR "CMake-Conan: unable to map MSVC runtime: ${CMAKE_MSVC_RUNTIME_LIBRARY} to Conan settings")
-            endif()
+            set(_msvc_runtime_library ${CMAKE_MSVC_RUNTIME_LIBRARY})
+        else()
+            set(_msvc_runtime_library MultiThreaded$<$<CONFIG:Debug>:Debug>DLL) # default value documented by CMake
+        endif()
+
+        set(_KNOWN_MSVC_RUNTIME_VALUES "")
+        list(APPEND _KNOWN_MSVC_RUNTIME_VALUES MultiThreaded MultiThreadedDLL)
+        list(APPEND _KNOWN_MSVC_RUNTIME_VALUES MultiThreadedDebug MultiThreadedDebugDLL)
+        list(APPEND _KNOWN_MSVC_RUNTIME_VALUES MultiThreaded$<$<CONFIG:Debug>:Debug> MultiThreaded$<$<CONFIG:Debug>:Debug>DLL)
 
-            # Runtime is "dynamic" in all cases if it ends in DLL
-            if(CMAKE_MSVC_RUNTIME_LIBRARY MATCHES ".*DLL$")
-                set(_COMPILER_RUNTIME "dynamic")
+        # only accept the 6 possible values, otherwise we don't don't know to map this
+        if(NOT _msvc_runtime_library IN_LIST _KNOWN_MSVC_RUNTIME_VALUES)
+            message(FATAL_ERROR "CMake-Conan: unable to map MSVC runtime: ${_msvc_runtime_library} to Conan settings")
+        endif()
+
+        # Runtime is "dynamic" in all cases if it ends in DLL
+        if(_msvc_runtime_library MATCHES ".*DLL$")
+            set(_COMPILER_RUNTIME "dynamic")
+        else()
+            set(_COMPILER_RUNTIME "static")
+        endif()
+        message(STATUS "CMake-Conan: CMake compiler.runtime=${_COMPILER_RUNTIME}")
+
+        # Only define compiler.runtime_type when explicitly requested
+        # If a generator expression is used, let Conan handle it conditional on build_type
+        if(NOT _msvc_runtime_library MATCHES "<CONFIG:Debug>:Debug>")
+            if(_msvc_runtime_library MATCHES "Debug")
+                set(_COMPILER_RUNTIME_TYPE "Debug")
             else()
-                set(_COMPILER_RUNTIME "static")
+                set(_COMPILER_RUNTIME_TYPE "Release")
             endif()
+            message(STATUS "CMake-Conan: CMake compiler.runtime_type=${_COMPILER_RUNTIME_TYPE}")
+        endif()
 
-            # Only define compiler.runtime_type when explicitly requested
-            # If a generator expression is used, let Conan handle it conditional on build_type
-            get_property(_IS_MULTI_CONFIG_GENERATOR GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
-            if(NOT CMAKE_MSVC_RUNTIME_LIBRARY MATCHES "<CONFIG:Debug>:Debug>")
-                if(CMAKE_MSVC_RUNTIME_LIBRARY MATCHES "Debug")
-                    set(_COMPILER_RUNTIME_TYPE "Debug")
-                else()
-                    set(_COMPILER_RUNTIME_TYPE "Release")
-                endif()
-            endif()
+        unset(_KNOWN_MSVC_RUNTIME_VALUES)
 
-            unset(_KNOWN_MSVC_RUNTIME_VALUES)
-            unset(_IS_MULTI_CONFIG_GENERATOR)
-        endif()
     elseif(_COMPILER MATCHES AppleClang)
         set(_COMPILER "apple-clang")
         string(REPLACE "." ";" VERSION_LIST ${CMAKE_CXX_COMPILER_VERSION})
@@ -267,6 +285,7 @@ function(detect_compiler COMPILER COMPILER_VERSION COMPILER_RUNTIME COMPILER_RUN
     set(${COMPILER_RUNTIME_TYPE} ${_COMPILER_RUNTIME_TYPE} PARENT_SCOPE)
 endfunction()
 
+
 function(detect_build_type BUILD_TYPE)
     get_property(_MULTICONFIG_GENERATOR GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
     if(NOT _MULTICONFIG_GENERATOR)
@@ -276,23 +295,43 @@ function(detect_build_type BUILD_TYPE)
     endif()
 endfunction()
 
+macro(set_conan_compiler_if_appleclang lang command output_variable)
+    if(CMAKE_${lang}_COMPILER_ID STREQUAL "AppleClang")
+        execute_process(COMMAND xcrun --find ${command}
+            OUTPUT_VARIABLE _xcrun_out OUTPUT_STRIP_TRAILING_WHITESPACE)
+        cmake_path(GET _xcrun_out PARENT_PATH _xcrun_toolchain_path)
+        cmake_path(GET CMAKE_${lang}_COMPILER PARENT_PATH _compiler_parent_path)
+        if ("${_xcrun_toolchain_path}" STREQUAL "${_compiler_parent_path}")
+            set(${output_variable} "")
+        endif()
+        unset(_xcrun_out)
+        unset(_xcrun_toolchain_path)
+        unset(_compiler_parent_path)
+    endif()
+endmacro()
+
+
 macro(append_compiler_executables_configuration)
     set(_conan_c_compiler "")
     set(_conan_cpp_compiler "")
     if(CMAKE_C_COMPILER)
         set(_conan_c_compiler "\"c\":\"${CMAKE_C_COMPILER}\",")
+        set_conan_compiler_if_appleclang(C cc _conan_c_compiler)
     else()
         message(WARNING "CMake-Conan: The C compiler is not defined. "
                         "Please define CMAKE_C_COMPILER or enable the C language.")
     endif()
     if(CMAKE_CXX_COMPILER)
         set(_conan_cpp_compiler "\"cpp\":\"${CMAKE_CXX_COMPILER}\"")
+        set_conan_compiler_if_appleclang(CXX c++ _conan_cpp_compiler)
     else()
         message(WARNING "CMake-Conan: The C++ compiler is not defined. "
                         "Please define CMAKE_CXX_COMPILER or enable the C++ language.")
     endif()
 
-    string(APPEND PROFILE "tools.build:compiler_executables={${_conan_c_compiler}${_conan_cpp_compiler}}\n")
+    if(NOT "x${_conan_c_compiler}${_conan_cpp_compiler}" STREQUAL "x")
+        string(APPEND PROFILE "tools.build:compiler_executables={${_conan_c_compiler}${_conan_cpp_compiler}}\n")
+    endif()
     unset(_conan_c_compiler)
     unset(_conan_cpp_compiler)
 endmacro()
@@ -303,7 +342,7 @@ function(detect_host_profile output_file)
     detect_arch(MYARCH)
     detect_compiler(MYCOMPILER MYCOMPILER_VERSION MYCOMPILER_RUNTIME MYCOMPILER_RUNTIME_TYPE)
     detect_cxx_standard(MYCXX_STANDARD)
-    detect_lib_cxx(MYOS MYLIB_CXX)
+    detect_lib_cxx(MYLIB_CXX)
     detect_build_type(MYBUILD_TYPE)
 
     set(PROFILE "")
@@ -360,7 +399,7 @@ function(detect_host_profile output_file)
     # propagate compilers via profile
     append_compiler_executables_configuration()
 
-    if(${MYOS} STREQUAL "Android")
+    if(MYOS STREQUAL "Android")
         string(APPEND PROFILE "tools.android:ndk_path=${CMAKE_ANDROID_NDK}\n")
     endif()
 
@@ -398,12 +437,26 @@ function(conan_install)
     # Invoke "conan install" with the provided arguments
     set(CONAN_ARGS ${CONAN_ARGS} -of=${CONAN_OUTPUT_FOLDER})
     message(STATUS "CMake-Conan: conan install ${CMAKE_SOURCE_DIR} ${CONAN_ARGS} ${ARGN}")
+
+
+    # In case there was not a valid cmake executable in the PATH, we inject the
+    # same we used to invoke the provider to the PATH
+    if(DEFINED PATH_TO_CMAKE_BIN)
+        set(_OLD_PATH $ENV{PATH})
+        set(ENV{PATH} "$ENV{PATH}:${PATH_TO_CMAKE_BIN}")
+    endif()
+
     execute_process(COMMAND ${CONAN_COMMAND} install ${CMAKE_SOURCE_DIR} ${CONAN_ARGS} ${ARGN} --format=json
                     RESULT_VARIABLE return_code
                     OUTPUT_VARIABLE conan_stdout
                     ERROR_VARIABLE conan_stderr
                     ECHO_ERROR_VARIABLE    # show the text output regardless
                     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+
+    if(DEFINED PATH_TO_CMAKE_BIN)
+        set(ENV{PATH} "${_OLD_PATH}")
+    endif()
+
     if(NOT "${return_code}" STREQUAL "0")
         message(FATAL_ERROR "Conan install failed='${return_code}'")
     else()
@@ -411,6 +464,7 @@ function(conan_install)
         # one is specified, but we don't know a priori where this is.
         # TODO: this can be made more robust if Conan can provide this in the json output
         string(JSON CONAN_GENERATORS_FOLDER GET ${conan_stdout} graph nodes 0 generators_folder)
+        cmake_path(CONVERT ${CONAN_GENERATORS_FOLDER} TO_CMAKE_PATH_LIST CONAN_GENERATORS_FOLDER)
         # message("conan stdout: ${conan_stdout}")
         message(STATUS "CMake-Conan: CONAN_GENERATORS_FOLDER=${CONAN_GENERATORS_FOLDER}")
         set_property(GLOBAL PROPERTY CONAN_GENERATORS_FOLDER "${CONAN_GENERATORS_FOLDER}")
@@ -459,6 +513,7 @@ function(conan_version_check)
     endif()
 endfunction()
 
+
 macro(construct_profile_argument argument_variable profile_list)
     set(${argument_variable} "")
     if("${profile_list}" STREQUAL "CONAN_HOST_PROFILE")
@@ -479,8 +534,8 @@ endmacro()
 
 macro(conan_provide_dependency method package_name)
     set_property(GLOBAL PROPERTY CONAN_PROVIDE_DEPENDENCY_INVOKED TRUE)
-    get_property(CONAN_INSTALL_SUCCESS GLOBAL PROPERTY CONAN_INSTALL_SUCCESS)
-    if(NOT CONAN_INSTALL_SUCCESS)
+    get_property(_conan_install_success GLOBAL PROPERTY CONAN_INSTALL_SUCCESS)
+    if(NOT _conan_install_success)
         find_program(CONAN_COMMAND "conan" REQUIRED)
         conan_get_version(${CONAN_COMMAND} CONAN_CURRENT_VERSION)
         conan_version_check(MINIMUM ${CONAN_MINIMUM_VERSION} CURRENT ${CONAN_CURRENT_VERSION})
@@ -493,21 +548,39 @@ macro(conan_provide_dependency method package_name)
         endif()
         construct_profile_argument(_host_profile_flags CONAN_HOST_PROFILE)
         construct_profile_argument(_build_profile_flags CONAN_BUILD_PROFILE)
-        get_property(_MULTICONFIG_GENERATOR GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
-        if(NOT _MULTICONFIG_GENERATOR)
+        if(EXISTS "${CMAKE_SOURCE_DIR}/conanfile.py")
+            file(READ "${CMAKE_SOURCE_DIR}/conanfile.py" outfile)
+            if(NOT "${outfile}" MATCHES ".*CMakeDeps.*")
+                message(WARNING "Cmake-conan: CMakeDeps generator was not defined in the conanfile")
+            endif()
+            set(generator "")
+        elseif (EXISTS "${CMAKE_SOURCE_DIR}/conanfile.txt")
+            file(READ "${CMAKE_SOURCE_DIR}/conanfile.txt" outfile)
+            if(NOT "${outfile}" MATCHES ".*CMakeDeps.*")
+                message(WARNING "Cmake-conan: CMakeDeps generator was not defined in the conanfile. "
+                        "Please define the generator as it will be mandatory in the future")
+            endif()
+            set(generator "-g;CMakeDeps")
+        endif()
+        get_property(_multiconfig_generator GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+        if(NOT _multiconfig_generator)
             message(STATUS "CMake-Conan: Installing single configuration ${CMAKE_BUILD_TYPE}")
-            conan_install(${_host_profile_flags} ${_build_profile_flags} --build=missing -g CMakeDeps)
+            conan_install(${_host_profile_flags} ${_build_profile_flags} ${CONAN_INSTALL_ARGS} ${generator})
         else()
             message(STATUS "CMake-Conan: Installing both Debug and Release")
-            conan_install(${_host_profile_flags} ${_build_profile_flags} -s build_type=Release --build=missing -g CMakeDeps)
-            conan_install(${_host_profile_flags} ${_build_profile_flags} -s build_type=Debug --build=missing -g CMakeDeps)
+            conan_install(${_host_profile_flags} ${_build_profile_flags} -s build_type=Release ${CONAN_INSTALL_ARGS} ${generator})
+            conan_install(${_host_profile_flags} ${_build_profile_flags} -s build_type=Debug ${CONAN_INSTALL_ARGS} ${generator})
         endif()
-        unset(_MULTICONFIG_GENERATOR)
+        unset(_host_profile_flags)
+        unset(_build_profile_flags)
+        unset(_multiconfig_generator)
+        unset(_conan_install_success)
     else()
         message(STATUS "CMake-Conan: find_package(${ARGV1}) found, 'conan install' already ran")
+        unset(_conan_install_success)
     endif()
 
-    get_property(CONAN_GENERATORS_FOLDER GLOBAL PROPERTY CONAN_GENERATORS_FOLDER)
+    get_property(_conan_generators_folder GLOBAL PROPERTY CONAN_GENERATORS_FOLDER)
 
     # Ensure that we consider Conan-provided packages ahead of any other,
     # irrespective of other settings that modify the search order or search paths
@@ -517,28 +590,66 @@ macro(conan_provide_dependency method package_name)
     #       find_package (<PackageName>)
 
     # Filter out `REQUIRED` from the argument list, as the first call may fail
-    set(_find_args "${ARGN}")
-    list(REMOVE_ITEM _find_args "REQUIRED")
-    if(NOT "MODULE" IN_LIST _find_args)
-        find_package(${package_name} ${_find_args} BYPASS_PROVIDER PATHS "${CONAN_GENERATORS_FOLDER}" NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
+    set(_find_args_${package_name} "${ARGN}")
+    list(REMOVE_ITEM _find_args_${package_name} "REQUIRED")
+    if(NOT "MODULE" IN_LIST _find_args_${package_name})
+        find_package(${package_name} ${_find_args_${package_name}} BYPASS_PROVIDER PATHS "${_conan_generators_folder}" NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
+        unset(_find_args_${package_name})
     endif()
 
     # Invoke find_package a second time - if the first call succeeded,
     # this will simply reuse the result. If not, fall back to CMake default search
     # behaviour, also allowing modules to be searched.
-    set(_cmake_module_path_orig "${CMAKE_MODULE_PATH}")
-    list(PREPEND CMAKE_MODULE_PATH "${CONAN_GENERATORS_FOLDER}")
     if(NOT ${package_name}_FOUND)
+        list(FIND CMAKE_MODULE_PATH "${_conan_generators_folder}" _index)
+        if(_index EQUAL -1)
+            list(PREPEND CMAKE_MODULE_PATH "${_conan_generators_folder}")
+        endif()
+        unset(_index)
         find_package(${package_name} ${ARGN} BYPASS_PROVIDER)
+        list(REMOVE_ITEM CMAKE_MODULE_PATH "${_conan_generators_folder}")
     endif()
+endmacro()
 
-    set(CMAKE_MODULE_PATH "${_cmake_module_path_orig}")
-    unset(_find_args)
-    unset(_cmake_module_path_orig)
-    unset(_host_profile_flags)
-    unset(_build_profile_flags)
+#[=[ not needed by Qt Creator, and if not commented it would break the auto-setup feature
+
+cmake_language(
+    SET_DEPENDENCY_PROVIDER conan_provide_dependency
+    SUPPORTED_METHODS FIND_PACKAGE
+)
+
+
+macro(conan_provide_dependency_check)
+    set(_CONAN_PROVIDE_DEPENDENCY_INVOKED FALSE)
+    get_property(_CONAN_PROVIDE_DEPENDENCY_INVOKED GLOBAL PROPERTY CONAN_PROVIDE_DEPENDENCY_INVOKED)
+    if(NOT _CONAN_PROVIDE_DEPENDENCY_INVOKED)
+        message(WARNING "Conan is correctly configured as dependency provider, "
+                        "but Conan has not been invoked. Please add at least one "
+                        "call to `find_package()`.")
+        if(DEFINED CONAN_COMMAND)
+            # supress warning in case `CONAN_COMMAND` was specified but unused.
+            set(_CONAN_COMMAND ${CONAN_COMMAND})
+            unset(_CONAN_COMMAND)
+        endif()
+    endif()
+    unset(_CONAN_PROVIDE_DEPENDENCY_INVOKED)
 endmacro()
 
+
+# Add a deferred call at the end of processing the top-level directory
+# to check if the dependency provider was invoked at all.
+cmake_language(DEFER DIRECTORY "${CMAKE_SOURCE_DIR}" CALL conan_provide_dependency_check)
+
+]=]
+
 # Configurable variables for Conan profiles
 set(CONAN_HOST_PROFILE "default;auto-cmake" CACHE STRING "Conan host profile")
 set(CONAN_BUILD_PROFILE "default" CACHE STRING "Conan build profile")
+set(CONAN_INSTALL_ARGS "--build=missing" CACHE STRING "Command line arguments for conan install")
+
+find_program(_cmake_program NAMES cmake NO_PACKAGE_ROOT_PATH NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_CMAKE_SYSTEM_PATH NO_CMAKE_FIND_ROOT_PATH)
+if(NOT _cmake_program)
+    get_filename_component(PATH_TO_CMAKE_BIN "${CMAKE_COMMAND}" DIRECTORY)
+    set(PATH_TO_CMAKE_BIN "${PATH_TO_CMAKE_BIN}" CACHE INTERNAL "Path where the CMake executable is")
+endif()
+