qt511.qtwebkit: fix on darwin

readline is used on macOS and iOS for some javascript console (JSC). It
seems to be easier to disable it than to fix it.

pkgs/development/libraries/qt-5/5.12/qtwebkit-darwin-no-readline.patch

@@ -0,0 +1,45 @@
+diff --git a/Source/JavaScriptCore/shell/CMakeLists.txt b/Source/JavaScriptCore/shell/CMakeLists.txt
+--- a/Source/JavaScriptCore/shell/CMakeLists.txt
++++ b/Source/JavaScriptCore/shell/CMakeLists.txt
+@@ -9,7 +9,6 @@ set(JSC_LIBRARIES
+ )
+ 
+ if (WTF_OS_MAC_OS_X)
+-    list(APPEND JSC_LIBRARIES edit)
+ endif ()
+ 
+ if ("${JavaScriptCore_LIBRARY_TYPE}" MATCHES "STATIC")
+diff --git a/Source/WTF/wtf/Platform.h b/Source/WTF/wtf/Platform.h
+--- a/Source/WTF/wtf/Platform.h
++++ b/Source/WTF/wtf/Platform.h
+@@ -563,7 +563,6 @@
+ #if PLATFORM(IOS)
+ 
+ #define HAVE_NETWORK_EXTENSION 1
+-#define HAVE_READLINE 1
+ #if USE(APPLE_INTERNAL_SDK)
+ #define USE_CFNETWORK 1
+ #endif
+@@ -650,7 +649,6 @@
+ #define HAVE_MADV_DONTNEED 1
+ #define HAVE_MERGESORT 1
+ #define HAVE_PTHREAD_SETNAME_NP 1
+-#define HAVE_READLINE 1
+ #define HAVE_SYS_TIMEB_H 1
+ 
+ #if !PLATFORM(GTK) && !PLATFORM(QT)
+diff --git a/Source/WTF/wtf/PlatformMac.cmake b/Source/WTF/wtf/PlatformMac.cmake
+--- a/Source/WTF/wtf/PlatformMac.cmake
++++ b/Source/WTF/wtf/PlatformMac.cmake
+@@ -2,11 +2,9 @@ set(WTF_LIBRARY_TYPE SHARED)
+ 
+ find_library(COCOA_LIBRARY Cocoa)
+ find_library(COREFOUNDATION_LIBRARY CoreFoundation)
+-find_library(READLINE_LIBRARY Readline)
+ list(APPEND WTF_LIBRARIES
+     ${COREFOUNDATION_LIBRARY}
+     ${COCOA_LIBRARY}
+-    ${READLINE_LIBRARY}
+     libicucore.dylib
+ )
+