Fix qtquick_compiler_add_resources when cross-compiling

Attempt to locate the qmlcachegen binary in the host bin directory if
possible.

Task-number: QTBUG-68724
Change-Id: If0d28408a316b3dd33f4734464e0d5fe44c9fc2c
Reviewed-by: Rolf Eike Beer <eb@emlix.com>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 87 insertions, 0 deletions

diff --git a/tools/qmlcachegen/Qt5QuickCompilerConfig.cmake.in b/tools/qmlcachegen/Qt5QuickCompilerConfig.cmake.in
new file mode 100644
index 0000000000..e4963c3a33
--- /dev/null
+++ b/tools/qmlcachegen/Qt5QuickCompilerConfig.cmake.in
@@ -0,0 +1,87 @@
+include(CMakeParseArguments)
+
+function(QTQUICK_COMPILER_DETERMINE_OUTPUT_FILENAME outvariable filename)
+    file(RELATIVE_PATH relpath ${CMAKE_CURRENT_SOURCE_DIR} ${filename})
+    string(REPLACE \".qml\" \"_qml\" relpath ${relpath})
+    string(REPLACE \".js\" \"_js\" relpath ${relpath})
+    string(REPLACE \"/\" \"_\" relpath ${relpath})
+    set(${outvariable} ${CMAKE_CURRENT_BINARY_DIR}/${relpath}.cpp PARENT_SCOPE)
+endfunction()
+
+function(QTQUICK_COMPILER_ADD_RESOURCES outfiles)
+    set(options)
+    set(oneValueArgs)
+    set(multiValueArgs OPTIONS)
+
+    cmake_parse_arguments(_RCC \"${options}\" \"${oneValueArgs}\" \"${multiValueArgs}\" ${ARGN})
+
+    find_package(Qt5 COMPONENTS Qml Core)
+
+!!IF isEmpty(CMAKE_BIN_DIR_IS_ABSOLUTE)
+    set(compiler_path \"${_qt5Core_install_prefix}/$${CMAKE_BIN_DIR}qmlcachegen$$CMAKE_BIN_SUFFIX\")
+!!ELSE
+    set(compiler_path \"$${CMAKE_BIN_DIR}qmlcachegen$$CMAKE_BIN_SUFFIX\")
+!!ENDIF
+    if(NOT EXISTS \"${compiler_path}\" )
+        message(FATAL_ERROR \"The package \\\"Qt5QuickCompilerConfig\\\" references the file
+   \\\"${compiler_path}\\\"
+but this file does not exist.  Possible reasons include:
+* The file was deleted, renamed, or moved to another location.
+* An install or uninstall procedure did not complete successfully.
+* The installation package was faulty and contained
+   \\\"${CMAKE_CURRENT_LIST_FILE}\\\"
+but not all the files it references.
+\")
+    endif()
+
+    get_target_property(rcc_path ${Qt5Core_RCC_EXECUTABLE} IMPORTED_LOCATION)
+
+    set(rcc_files ${_RCC_UNPARSED_ARGUMENTS})
+    set(rcc_options ${_RCC_OPTIONS})
+    set(filtered_rcc_files)
+    set(compiler_output)
+    set(rcc_files_with_compilation_units)
+    set(loader_flags)
+
+    foreach(_resource ${rcc_files})
+        get_filename_component(resource_base ${_resource} NAME_WE)
+        set(new_resource_file ${CMAKE_CURRENT_BINARY_DIR}/${resource_base}_qmlcache.qrc)
+
+        get_filename_component(input_resource ${_resource} ABSOLUTE)
+
+        execute_process(COMMAND ${compiler_path} -filter-resource-file ${input_resource} -o ${new_resource_file} OUTPUT_VARIABLE remaining_files)
+        if(remaining_files)
+            list(APPEND filtered_rcc_files ${new_resource_file})
+            list(APPEND loader_flags \"--resource-file-mapping=${_resource}=${new_resource_file}\")
+        else()
+            list(APPEND loader_flags \"--resource-file-mapping=${_resource}\")
+        endif()
+
+        set(rcc_file_with_compilation_units)
+
+        execute_process(COMMAND ${rcc_path} -list \"${input_resource}\" OUTPUT_VARIABLE rcc_contents)
+        string(REGEX REPLACE \"[\r\n]+\" \";\" rcc_contents ${rcc_contents})
+        foreach(it ${rcc_contents})
+            get_filename_component(extension ${it} EXT)
+            if(extension STREQUAL \".qml\" OR extension STREQUAL \".js\" OR extension STREQUAL \".ui.qml\")
+                qtquick_compiler_determine_output_filename(output_file ${it})
+                add_custom_command(OUTPUT ${output_file} COMMAND ${compiler_path} ARGS --resource=${input_resource} ${it} -o ${output_file} DEPENDS ${it})
+                list(APPEND compiler_output ${output_file})
+                set(rcc_file_with_compilation_units ${input_resource})
+            endif()
+        endforeach()
+
+        if(rcc_file_with_compilation_units)
+            list(APPEND rcc_files_with_compilation_units ${rcc_file_with_compilation_units})
+        endif()
+    endforeach()
+
+    if(rcc_files_with_compilation_units)
+        set(loader_source ${CMAKE_CURRENT_BINARY_DIR}/qmlcache_loader.cpp)
+        add_custom_command(OUTPUT ${loader_source} COMMAND ${compiler_path} ARGS ${loader_flags} ${rcc_files_with_compilation_units} -o ${loader_source} DEPENDS ${rcc_files_with_compilation_units})
+        list(APPEND compiler_output ${loader_source})
+    endif()
+
+    qt5_add_resources(output_resources ${filtered_rcc_files} OPTIONS ${options})
+    set(${outfiles} ${output_resources} ${compiler_output} PARENT_SCOPE)
+endfunction()