Merge pull request qgis#61641 from NathanW2/win_build

qgis#59249 - Add qgis.env.in and cmake step to generate when using vcpkg

Author: m-kuhn

CMakeLists.txt

@@ -44,6 +44,7 @@ else()
   message(STATUS "Building with system libraries --")
 endif()
 
+
 if(WITH_VCPKG)
   if(WIN32)
     list(APPEND CMAKE_PROGRAM_PATH "${VCPKG_INSTALL_PREFIX}/${VCPKG_TARGET_TRIPLET}/tools/python3/Scripts/")
@@ -1102,6 +1103,14 @@ set (CMAKE_LIBRARY_OUTPUT_DIRECTORY ${QGIS_OUTPUT_DIRECTORY}/${QGIS_LIB_SUBDIR})
 # if run from the build directory QGIS will detect it and alter the paths
 file(WRITE ${QGIS_OUTPUT_DIRECTORY}/${QGIS_BIN_SUBDIR}/qgisbuildpath.txt "${CMAKE_SOURCE_DIR}\n${QGIS_OUTPUT_DIRECTORY}")
 
+# Write the qgis.env file to the bin folder to allow running qgis.exe correctly from build folder
+# and find the SDK installed folders. Only runs when VCPKG_APPLOCAL_DEPS=OFF because ON means it is packaged together
+if(WITH_VCPKG AND NOT VCPKG_APPLOCAL_DEPS AND WIN32)
+  # Used in the env.in file to setup the correct paths to the SDK folder
+    set(VCPKG_TARGET_PATH "${VCPKG_INSTALL_PREFIX}/${VCPKG_TARGET_TRIPLET}")
+    configure_file("${CMAKE_SOURCE_DIR}/ms-windows/dev/qgis.env.in" "${QGIS_OUTPUT_DIRECTORY}/${QGIS_BIN_SUBDIR}/qgis.env")
+endif()
+
 # manual page - makes sense only on unix systems
 if (UNIX AND NOT APPLE)
   set (DEFAULT_MANUAL_SUBDIR  man)

ms-windows/dev/qgis.env.in

@@ -0,0 +1,5 @@
+PATH=@VCPKG_TARGET_PATH@\bin;$ENV{WINDIR};$ENV{WINDIR}\system32\WBem
+PYTHONPATH=@QGIS_OUTPUT_DIRECTORY@\python;@VCPKG_TARGET_PATH@/tools/python3/Lib;@VCPKG_TARGET_PATH@/tools/python3/Lib/site-packages
+PROJ_DATA=@VCPKG_TARGET_PATH@/share/proj
+QT_PLUGIN_PATH=@VCPKG_TARGET_PATH@/Qt6/plugins;@VCPKG_TARGET_PATH@/bin/Qca
+PYTHONHOME=@VCPKG_TARGET_PATH@\tools\python3