From 3e3ecbf1c1db6374ec8fbc03381191479bafef1c Mon Sep 17 00:00:00 2001
From: Martin Valgur <martin.valgur@gmail.com>
Date: Mon, 22 May 2023 19:31:51 +0300
Subject: [PATCH] conan.cmake: more robust generator output dir extraction

---
 cmake/conan.cmake              | 8 +++++++-
 cmake/conan_dependencies.cmake | 4 +---
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/cmake/conan.cmake b/cmake/conan.cmake
index 087516f4..28397318 100644
--- a/cmake/conan.cmake
+++ b/cmake/conan.cmake
@@ -581,7 +581,7 @@ function(conan_cmake_install)
                               ${OUTPUT_FOLDER} ${GENERATOR} ${BUILD}
                               ${OPTIONS} ${OPTIONS_HOST} ${OPTIONS_BUILD} ${PROFILE} ${PROFILE_HOST}
                               ${PROFILE_BUILD} ${SETTINGS} ${SETTINGS_HOST} ${SETTINGS_BUILD}
-                              ${CONF_HOST} ${CONF_BUILD})
+                              ${CONF_HOST} ${CONF_BUILD} --format=json)
 
     string(REPLACE ";" " " _install_args "${install_args}")
     message(STATUS "Conan executing: ${CONAN_CMD} ${_install_args}")
@@ -595,6 +595,8 @@ function(conan_cmake_install)
 
     execute_process(COMMAND ${CONAN_CMD} ${install_args}
                     RESULT_VARIABLE return_code
+                    OUTPUT_VARIABLE conan_stdout
+                    ERROR_VARIABLE conan_stderr
                     ${OUTPUT_OPT}
                     ${ERROR_OPT}
                     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
@@ -605,6 +607,10 @@ function(conan_cmake_install)
         else()
             message(FATAL_ERROR "Conan install failed='${return_code}'")
         endif()
+    else()
+        string(REGEX MATCH "\"generators_folder\": *\"([^\"]*)\"" MATCHED_PATH "${conan_stdout}")
+        string(REGEX REPLACE "\"generators_folder\": *\"([^\"]*)\"" "\\1" CONAN_GENERATORS_FOLDER "${MATCHED_PATH}")
+        set(CONAN_GENERATORS_FOLDER "${CONAN_GENERATORS_FOLDER}" PARENT_SCOPE)
     endif()
 
 endfunction()
diff --git a/cmake/conan_dependencies.cmake b/cmake/conan_dependencies.cmake
index 75c517a3..7551f87f 100644
--- a/cmake/conan_dependencies.cmake
+++ b/cmake/conan_dependencies.cmake
@@ -91,9 +91,7 @@ function(_custom_conan_cmake_install)
     # Prepend to prioritize conan packages over system ones.
     # Multiple paths are added due to the output directory of the generator depending on
     # the layout() config in the used conanfile.py.
-    list(PREPEND CMAKE_PREFIX_PATH
-        ${CMAKE_CURRENT_BINARY_DIR}
-        ${CMAKE_CURRENT_BINARY_DIR}/build/${CMAKE_BUILD_TYPE}/generators)
+    list(PREPEND CMAKE_PREFIX_PATH ${CONAN_GENERATORS_FOLDER})
     set(CMAKE_PREFIX_PATH "${CMAKE_PREFIX_PATH}" PARENT_SCOPE)
 endfunction()