cmake: Add bundled QtScript build

Also, make QtScript dependency optional like we do in the Qbs build.

Tested on macOS, Linux and Windows.

CMake 3.15 is now required for the CMP0092 policy which removes default
warning flags from CMAKE_CXX_FLAGS.

Change-Id: I199fb802d5ad72d1ac8d5a89c05372c43581c95d
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

3 files changed, 368 insertions, 1 deletions

diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index f029edd1f..8356cd6a1 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -1,2 +1,8 @@
+if (QBS_USE_BUNDLED_QT_SCRIPT OR NOT Qt5Script_FOUND)
+    add_subdirectory(scriptengine)
+else()
+    add_library(qbsscriptengine ALIAS Qt5::Script)
+endif()
+
 add_subdirectory(corelib)
 add_subdirectory(msbuild)
diff --git a/src/lib/corelib/CMakeLists.txt b/src/lib/corelib/CMakeLists.txt
index 224754a30..3a070b55c 100644
--- a/src/lib/corelib/CMakeLists.txt
+++ b/src/lib/corelib/CMakeLists.txt
@@ -422,7 +422,7 @@ add_qbs_library(qbscore
     PUBLIC_DEFINES
         ${QBS_PROJECT_FILE_UPDATES_DEFINES}
     DEPENDS
-        Qt5::CorePrivate Qt5::Network Qt5::Script Qt5::Xml ${EXTERNAL_DEPENDS}
+        Qt5::CorePrivate Qt5::Network qbsscriptengine Qt5::Xml ${EXTERNAL_DEPENDS}
     PUBLIC_DEPENDS
         Qt5::Core
     INCLUDES
diff --git a/src/lib/scriptengine/CMakeLists.txt b/src/lib/scriptengine/CMakeLists.txt
new file mode 100644
index 000000000..452605888
--- /dev/null
+++ b/src/lib/scriptengine/CMakeLists.txt
@@ -0,0 +1,361 @@
+set(QT_SCRIPT_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../../shared/qtscript/src/")
+
+if (UNIX)
+    set(_USE_SYSTEM_MALLOC NO)
+else()
+    set(_USE_SYSTEM_MALLOC YES)
+endif (UNIX)
+
+set(JAVASCRIPT_CORE_INCLUDES
+    assembler
+    bytecode
+    bytecompiler
+    debugger
+    interpreter
+    jit
+    parser
+    pcre
+    profiler
+    runtime
+    wrec
+    wtf
+    wtf/unicode
+    yarr
+    API
+    ForwardingHeaders
+    generated
+)
+list_transform_prepend(JAVASCRIPT_CORE_INCLUDES "${QT_SCRIPT_PATH}/3rdparty/javascriptcore/JavaScriptCore/")
+
+set(QT_SCRIPT_PUBLIC_INCLUDES
+    "${CMAKE_CURRENT_SOURCE_DIR}/include"
+    "${CMAKE_CURRENT_BINARY_DIR}/include"
+)
+
+set(QT_SCRIPT_INCLUDES
+    "${QT_SCRIPT_PATH}/3rdparty/javascriptcore"
+    "${QT_SCRIPT_PATH}/3rdparty/javascriptcore/JavaScriptCore"
+    "${QT_SCRIPT_PATH}/script"
+    "${QT_SCRIPT_PATH}/script/api"
+    "${QT_SCRIPT_PATH}/script/parser"
+    "${CMAKE_CURRENT_BINARY_DIR}/include/QtScript/${Qt5_VERSION}/QtScript"
+)
+
+set(QT_SCRIPT_DEFINES
+    "QT_BUILD_SCRIPT_LIB"
+    "QT_NO_USING_NAMESPACE"
+    "JSC=QTJSC"
+    "jscyyparse=qtjscyyparse"
+    "jscyylex=qtjscyylex"
+    "jscyyerror=qtjscyyerror"
+    "WTF=QTWTF"
+    "LOG_DISABLED=1"
+    "WTF_USE_JAVASCRIPTCORE_BINDINGS=1"
+    "WTF_CHANGES=1"
+    "JS_NO_EXPORT"
+
+    # JavaScriptCore
+    "BUILDING_QT__"
+    "BUILDING_JavaScriptCore"
+    "BUILDING_WTF"
+    "ENABLE_JIT=0"
+    "ENABLE_YARR_JIT=0"
+    "ENABLE_YARR=0"
+
+    # WebKit
+    "WTF_USE_ACCELERATED_COMPOSITING"
+)
+
+if (APPLE)
+    list(APPEND QT_SCRIPT_DEFINES "ENABLE_JSC_MULTIPLE_THREADS=0")
+elseif(WIN32)
+    list(APPEND QT_SCRIPT_DEFINES "NOMINMAX" "_CRT_RAND_S")
+endif()
+
+if (MSVC)
+    set(QT_SCRIPT_CXX_FLAGS "/wd4291" "/wd4344" "/wd4396" "/wd4503" "/wd4800" "/wd4819" "/wd4996")
+else()
+    set(QT_SCRIPT_CXX_FLAGS "-fno-strict-aliasing" "-w"
+        "-Wall" "-Wreturn-type" "-Wcast-align" "-Wchar-subscripts"
+        "-Wformat-security" "-Wreturn-type" "-Wno-unused-parameter"
+        "-Wno-sign-compare" "-Wno-switch" "-Wno-switch-enum" "-Wundef"
+        "-Wmissing-noreturn" "-Winit-self" "-Wno-deprecated" "-Wno-suggest-attribute=noreturn"
+        "-Wno-nonnull-compare" "-pthread")
+endif()
+
+set(QT_SCRIPT_PUBLIC_DEPENDS Qt5::Core)
+if (UNIX)
+    list(APPEND QT_SCRIPT_PUBLIC_DEPENDS "pthread")
+elseif(WIN32)
+    list(APPEND QT_SCRIPT_PUBLIC_DEPENDS "winmm")
+endif()
+
+set(PCRE_SOURCES
+    pcre_compile.cpp
+    pcre_exec.cpp
+    pcre_tables.cpp
+    pcre_ucp_searchfuncs.cpp
+    pcre_xclass.cpp
+)
+list_transform_prepend(PCRE_SOURCES "${QT_SCRIPT_PATH}/3rdparty/javascriptcore/JavaScriptCore/pcre/")
+
+if (NOT _USE_SYSTEM_MALLOC)
+    set(SYSTEM_MALLOC_SOURCES
+        wtf/TCSystemAlloc.cpp
+    )
+    list_transform_prepend(SYSTEM_MALLOC_SOURCES "${QT_SCRIPT_PATH}/3rdparty/javascriptcore/JavaScriptCore/")
+
+    list(APPEND QT_SCRIPT_DEFINES "USE_SYSTEM_MALLOC")
+else()
+    set(SYSTEM_MALLOC_SOURCES "")
+endif()
+
+set(JAVASCRIPT_CORE_SOURCES
+    API/JSBase.cpp
+    API/JSCallbackConstructor.cpp
+    API/JSCallbackFunction.cpp
+    API/JSCallbackObject.cpp
+    API/JSClassRef.cpp
+    API/JSContextRef.cpp
+    API/JSObjectRef.cpp
+    API/JSStringRef.cpp
+    API/JSValueRef.cpp
+    API/OpaqueJSString.cpp
+    assembler/ARMAssembler.cpp
+    assembler/MacroAssemblerARM.cpp
+    bytecode/CodeBlock.cpp
+    bytecode/JumpTable.cpp
+    bytecode/Opcode.cpp
+    bytecode/SamplingTool.cpp
+    bytecode/StructureStubInfo.cpp
+    bytecompiler/BytecodeGenerator.cpp
+    bytecompiler/NodesCodegen.cpp
+    debugger/DebuggerActivation.cpp
+    debugger/DebuggerCallFrame.cpp
+    debugger/Debugger.cpp
+    generated/Grammar.cpp
+    interpreter/CallFrame.cpp
+    interpreter/Interpreter.cpp
+    interpreter/RegisterFile.cpp
+    parser/Lexer.cpp
+    parser/Nodes.cpp
+    parser/ParserArena.cpp
+    parser/Parser.cpp
+    profiler/Profile.cpp
+    profiler/ProfileGenerator.cpp
+    profiler/ProfileNode.cpp
+    profiler/Profiler.cpp
+    runtime/ArgList.cpp
+    runtime/Arguments.cpp
+    runtime/ArrayConstructor.cpp
+    runtime/ArrayPrototype.cpp
+    runtime/BooleanConstructor.cpp
+    runtime/BooleanObject.cpp
+    runtime/BooleanPrototype.cpp
+    runtime/CallData.cpp
+    runtime/Collector.cpp
+    runtime/CommonIdentifiers.cpp
+    runtime/Completion.cpp
+    runtime/ConstructData.cpp
+    runtime/DateConstructor.cpp
+    runtime/DateConversion.cpp
+    runtime/DateInstance.cpp
+    runtime/DatePrototype.cpp
+    runtime/ErrorConstructor.cpp
+    runtime/Error.cpp
+    runtime/ErrorInstance.cpp
+    runtime/ErrorPrototype.cpp
+    runtime/ExceptionHelpers.cpp
+    runtime/Executable.cpp
+    runtime/FunctionConstructor.cpp
+    runtime/FunctionPrototype.cpp
+    runtime/GetterSetter.cpp
+    runtime/GlobalEvalFunction.cpp
+    runtime/Identifier.cpp
+    runtime/InitializeThreading.cpp
+    runtime/InternalFunction.cpp
+    runtime/JSActivation.cpp
+    runtime/JSAPIValueWrapper.cpp
+    runtime/JSArray.cpp
+    runtime/JSByteArray.cpp
+    runtime/JSCell.cpp
+    runtime/JSFunction.cpp
+    runtime/JSGlobalData.cpp
+    runtime/JSGlobalObject.cpp
+    runtime/JSGlobalObjectFunctions.cpp
+    runtime/JSImmediate.cpp
+    runtime/JSLock.cpp
+    runtime/JSNotAnObject.cpp
+    runtime/JSNumberCell.cpp
+    runtime/JSObject.cpp
+    runtime/JSONObject.cpp
+    runtime/JSPropertyNameIterator.cpp
+    runtime/JSStaticScopeObject.cpp
+    runtime/JSString.cpp
+    runtime/JSValue.cpp
+    runtime/JSVariableObject.cpp
+    runtime/JSWrapperObject.cpp
+    runtime/LiteralParser.cpp
+    runtime/Lookup.cpp
+    runtime/MarkStackPosix.cpp
+    runtime/MarkStackSymbian.cpp
+    runtime/MarkStackWin.cpp
+    runtime/MarkStack.cpp
+    runtime/MathObject.cpp
+    runtime/NativeErrorConstructor.cpp
+    runtime/NativeErrorPrototype.cpp
+    runtime/NumberConstructor.cpp
+    runtime/NumberObject.cpp
+    runtime/NumberPrototype.cpp
+    runtime/ObjectConstructor.cpp
+    runtime/ObjectPrototype.cpp
+    runtime/Operations.cpp
+    runtime/PropertyDescriptor.cpp
+    runtime/PropertyNameArray.cpp
+    runtime/PropertySlot.cpp
+    runtime/PrototypeFunction.cpp
+    runtime/RegExpConstructor.cpp
+    runtime/RegExp.cpp
+    runtime/RegExpObject.cpp
+    runtime/RegExpPrototype.cpp
+    runtime/ScopeChain.cpp
+    runtime/SmallStrings.cpp
+    runtime/StringConstructor.cpp
+    runtime/StringObject.cpp
+    runtime/StringPrototype.cpp
+    runtime/StructureChain.cpp
+    runtime/Structure.cpp
+    runtime/TimeoutChecker.cpp
+    runtime/UString.cpp
+    runtime/UStringImpl.cpp
+    wtf/Assertions.cpp
+    wtf/ByteArray.cpp
+    wtf/CurrentTime.cpp
+    wtf/DateMath.cpp
+    wtf/dtoa.cpp
+    wtf/FastMalloc.cpp
+    wtf/HashTable.cpp
+    wtf/MainThread.cpp
+    wtf/qt/MainThreadQt.cpp
+    wtf/qt/ThreadingQt.cpp
+    wtf/RandomNumber.cpp
+    wtf/RefCountedLeakCounter.cpp
+    wtf/ThreadingNone.cpp
+    wtf/Threading.cpp
+    wtf/TypeTraits.cpp
+    wtf/unicode/CollatorDefault.cpp
+    wtf/unicode/icu/CollatorICU.cpp
+    wtf/unicode/UTF8.cpp
+)
+list_transform_prepend(JAVASCRIPT_CORE_SOURCES "${QT_SCRIPT_PATH}/3rdparty/javascriptcore/JavaScriptCore/")
+
+set(API_SOURCES
+    qscriptable.cpp
+    qscriptable.h
+    qscriptable_p.h
+    qscriptclass.cpp
+    qscriptclass.h
+    qscriptclasspropertyiterator.cpp
+    qscriptclasspropertyiterator.h
+    qscriptcontext.cpp
+    qscriptcontext.h
+    qscriptcontextinfo.cpp
+    qscriptcontextinfo.h
+    qscriptcontext_p.h
+    qscriptengineagent.cpp
+    qscriptengineagent.h
+    qscriptengineagent_p.h
+    qscriptengine.cpp
+    qscriptengine.h
+    qscriptengine_p.h
+    qscriptextensioninterface.h
+    qscriptextensionplugin.cpp
+    qscriptextensionplugin.h
+    qscriptprogram.cpp
+    qscriptprogram.h
+    qscriptprogram_p.h
+    qscriptstring.cpp
+    qscriptstring.h
+    qscriptstring_p.h
+    qscriptvalue.cpp
+    qscriptvalue.h
+    qscriptvalueiterator.cpp
+    qscriptvalueiterator.h
+    qscriptvalue_p.h
+    qtscriptglobal.h
+)
+list_transform_prepend(API_SOURCES "${QT_SCRIPT_PATH}/script/api/")
+
+set(BRIDGE_SOURCES
+    qscriptactivationobject.cpp
+    qscriptactivationobject_p.h
+    qscriptclassobject.cpp
+    qscriptclassobject_p.h
+    qscriptfunction.cpp
+    qscriptfunction_p.h
+    qscriptglobalobject.cpp
+    qscriptglobalobject_p.h
+    qscriptobject.cpp
+    qscriptobject_p.h
+    qscriptqobject.cpp
+    qscriptqobject_p.h
+    qscriptstaticscopeobject.cpp
+    qscriptstaticscopeobject_p.h
+    qscriptvariant.cpp
+    qscriptvariant_p.h
+)
+list_transform_prepend(BRIDGE_SOURCES "${QT_SCRIPT_PATH}/script/bridge/")
+
+set(PARSER_SOURCES
+    qscriptast.cpp
+    qscriptastfwd_p.h
+    qscriptast_p.h
+    qscriptastvisitor.cpp
+    qscriptastvisitor_p.h
+    qscriptgrammar.cpp
+    qscriptgrammar_p.h
+    qscriptlexer.cpp
+    qscriptlexer_p.h
+    qscriptsyntaxchecker.cpp
+    qscriptsyntaxchecker_p.h
+)
+list_transform_prepend(PARSER_SOURCES "${QT_SCRIPT_PATH}/script/parser/")
+
+find_package(Perl)
+
+get_target_property(_QT_QMAKE_EXECUTABLE Qt5::qmake IMPORTED_LOCATION)
+get_filename_component(_QT_BIN_DIRECTORY ${_QT_QMAKE_EXECUTABLE} DIRECTORY)
+
+file(GLOB API_HEADERS "${QT_SCRIPT_PATH}/script/api/*.h")
+
+message("${QT_SCRIPT_PATH}")
+
+add_custom_command(
+    OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/include/QtScript/qscriptengine.h"
+    COMMAND ${PERL_EXECUTABLE} "${_QT_BIN_DIRECTORY}/syncqt.pl"
+        -minimal
+        -version "${Qt5_VERSION}"
+        -outdir ${CMAKE_CURRENT_BINARY_DIR}
+        "${QT_SCRIPT_PATH}/.."
+    BYPRODUCTS
+    DEPENDS ${API_HEADERS}
+    )
+
+add_qbs_library(qbsscriptengine
+    STATIC
+    DEFINES ${QT_SCRIPT_DEFINES}
+    DEPENDS Qt5::CorePrivate
+    PUBLIC_DEPENDS ${QT_SCRIPT_PUBLIC_DEPENDS}
+    INCLUDES ${QT_SCRIPT_PUBLIC_INCLUDES} ${QT_SCRIPT_INCLUDES} ${JAVASCRIPT_CORE_INCLUDES}
+    PUBLIC_INCLUDES ${QT_SCRIPT_PUBLIC_INCLUDES}
+    SOURCES
+        "${CMAKE_CURRENT_BINARY_DIR}/include/QtScript/qscriptengine.h"
+        ${PCRE_SOURCES}
+        ${SYSTEM_MALLOC_SOURCES}
+        ${JAVASCRIPT_CORE_SOURCES}
+        ${API_SOURCES}
+        ${BRIDGE_SOURCES}
+        ${PARSER_SOURCES}
+    )
+set_property(TARGET qbsscriptengine PROPERTY CXX_STANDARD 14)
+target_compile_options(qbsscriptengine PRIVATE ${QT_SCRIPT_CXX_FLAGS})