Add CMake target for qdoc

Not pretty, but closely following the existing code for the linguist tools.

Task-number: QTBUG-75868
Change-Id: I3a6d79a0c5706e129b6abcc5b0f3cb65c4b3e5c3
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
Reviewed-by: Kevin Funk <kevin.funk@kdab.com>
 

2 files changed, 91 insertions, 0 deletions

diff --git a/src/qdoc/Qt5DocToolsConfig.cmake.in b/src/qdoc/Qt5DocToolsConfig.cmake.in
new file mode 100644
index 000000000..daa336127
--- /dev/null
+++ b/src/qdoc/Qt5DocToolsConfig.cmake.in
@@ -0,0 +1,56 @@
+if (CMAKE_VERSION VERSION_LESS 2.8.3)
+    message(FATAL_ERROR \"Qt 5 requires at least CMake version 2.8.3\")
+endif()
+
+!!IF !isEmpty(CMAKE_USR_MOVE_WORKAROUND)
+!!IF !isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+set(_qt5_qdoctools_install_prefix \"$$[QT_INSTALL_PREFIX]\")
+!!ELSE
+get_filename_component(_IMPORT_PREFIX \"${CMAKE_CURRENT_LIST_FILE}\" PATH)
+# Use original install prefix when loaded through a
+# cross-prefix symbolic link such as /lib -> /usr/lib.
+get_filename_component(_realCurr \"${_IMPORT_PREFIX}\" REALPATH)
+get_filename_component(_realOrig \"$$CMAKE_INSTALL_LIBS_DIR/cmake/Qt5DocTools\" REALPATH)
+if(_realCurr STREQUAL _realOrig)
+    get_filename_component(_qt5_qdoctools_install_prefix \"$$CMAKE_INSTALL_LIBS_DIR/$${CMAKE_RELATIVE_INSTALL_LIBS_DIR}\" ABSOLUTE)
+else()
+    get_filename_component(_qt5_qdoctools_install_prefix \"${CMAKE_CURRENT_LIST_DIR}/$${CMAKE_RELATIVE_INSTALL_DIR}\" ABSOLUTE)
+endif()
+unset(_realOrig)
+unset(_realCurr)
+unset(_IMPORT_PREFIX)
+!!ENDIF
+!!ELIF isEmpty(CMAKE_LIB_DIR_IS_ABSOLUTE)
+get_filename_component(_qt5_qdoctools_install_prefix \"${CMAKE_CURRENT_LIST_DIR}/$${CMAKE_RELATIVE_INSTALL_DIR}\" ABSOLUTE)
+!!ELSE
+set(_qt5_qdoctools_install_prefix \"$$[QT_INSTALL_PREFIX]\")
+!!ENDIF
+
+macro(_qt5_DocTools_check_file_exists file)
+    if(NOT EXISTS \"${file}\" )
+        message(FATAL_ERROR \"The package \\\"Qt5DocTools\\\" references the file
+   \\\"${file}\\\"
+but this file does not exist.  Possible reasons include:
+* The file was deleted, renamed, or moved to another location.
+* An install or uninstall procedure did not complete successfully.
+* The installation package was faulty and contained
+   \\\"${CMAKE_CURRENT_LIST_FILE}\\\"
+but not all the files it references.
+\")
+    endif()
+endmacro()
+
+if (NOT TARGET Qt5::qdoc)
+    add_executable(Qt5::qdoc IMPORTED)
+
+!!IF isEmpty(CMAKE_BIN_DIR_IS_ABSOLUTE)
+    set(imported_location \"${_qt5_qdoctools_install_prefix}/$${CMAKE_BIN_DIR}qdoc$$CMAKE_BIN_SUFFIX\")
+!!ELSE
+    set(imported_location \"$${CMAKE_BIN_DIR}qdoc$$CMAKE_BIN_SUFFIX\")
+!!ENDIF
+    _qt5_DocTools_check_file_exists(${imported_location})
+
+    set_target_properties(Qt5::qdoc PROPERTIES
+        IMPORTED_LOCATION ${imported_location}
+    )
+endif()
diff --git a/src/qdoc/qdoc.pro b/src/qdoc/qdoc.pro
index 95fdc5cdf..9e58c691b 100644
--- a/src/qdoc/qdoc.pro
+++ b/src/qdoc/qdoc.pro
@@ -121,3 +121,38 @@ QMAKE_TARGET_DESCRIPTION = "Qt Documentation Compiler"
 load(qt_tool)
 
 TR_EXCLUDE += $$PWD/*
+
+load(cmake_functions)
+
+CMAKE_INSTALL_LIBS_DIR = $$cmakeTargetPath($$[QT_INSTALL_LIBS])
+contains(CMAKE_INSTALL_LIBS_DIR, ^(/usr)?/lib(64)?.*): CMAKE_USR_MOVE_WORKAROUND = $$CMAKE_INSTALL_LIBS_DIR
+
+CMAKE_LIB_DIR = $$cmakeRelativePath($$[QT_INSTALL_LIBS], $$[QT_INSTALL_PREFIX])
+!contains(CMAKE_LIB_DIR,"^\\.\\./.*") {
+    CMAKE_RELATIVE_INSTALL_LIBS_DIR = $$cmakeRelativePath($$[QT_INSTALL_PREFIX], $$[QT_INSTALL_LIBS])
+    # We need to go up another two levels because the CMake files are
+    # installed in $${CMAKE_LIB_DIR}/cmake/Qt5$${CMAKE_MODULE_NAME}
+    CMAKE_RELATIVE_INSTALL_DIR = "$${CMAKE_RELATIVE_INSTALL_LIBS_DIR}../../"
+} else {
+    CMAKE_LIB_DIR_IS_ABSOLUTE = True
+}
+
+CMAKE_BIN_DIR = $$cmakeRelativePath($$[QT_HOST_BINS], $$[QT_INSTALL_PREFIX])
+contains(CMAKE_BIN_DIR, "^\\.\\./.*") {
+    CMAKE_BIN_DIR = $$[QT_HOST_BINS]/
+    CMAKE_BIN_DIR_IS_ABSOLUTE = True
+}
+
+load(qt_build_paths)
+
+cmake_qdoc_config_file.input = $$PWD/Qt5DocToolsConfig.cmake.in
+cmake_qdoc_config_version_file.input = $$[QT_HOST_DATA/src]/mkspecs/features/data/cmake/Qt5ConfigVersion.cmake.in
+CMAKE_PACKAGE_VERSION = $$MODULE_VERSION
+cmake_qdoc_config_file.output = $$MODULE_BASE_OUTDIR/lib/cmake/Qt5DocTools/Qt5DocToolsConfig.cmake
+cmake_qdoc_config_version_file.output = $$MODULE_BASE_OUTDIR/lib/cmake/Qt5DocTools/Qt5DocToolsConfigVersion.cmake
+QMAKE_SUBSTITUTES += cmake_qdoc_config_file cmake_qdoc_config_version_file
+
+cmake_qdoc_tools_files.files += $$cmake_qdoc_config_file.output $$cmake_qdoc_config_version_file.output
+cmake_qdoc_tools_files.path = $$[QT_INSTALL_LIBS]/cmake/Qt5DocTools
+cmake_qdoc_tools_files.CONFIG = no_check_exist
+INSTALLS += cmake_qdoc_tools_files