Make devel/qt4's clang+base libstdc++ patch work without changes to x11/kdelibs4.

Unconditionally including ciso646 in qglobal.h to check for libc++ makes
including qglobal.h from C programs fail.

qglobal.h is not supposed to be used in C programs, but kdelibs4's
FindQt.cmake ends up calling CHECK_SYMBOL_EXISTS() instead of
CHECK_CXX_SYMBOL_EXISTS() to check if some macros are defined. Since
kdelibs4 is in maintenance mode, our changes to it can be avoided if we just
check for __cplusplus before including ciso646 (<initializer_list> is not
available in C anyway).

2 files changed, 5 insertions, 47 deletions

diff --git a/x11/kdelibs4/Makefile b/x11/kdelibs4/Makefile
index c2d4f914f189..0c0f2c0971cc 100644
--- a/x11/kdelibs4/Makefile
+++ b/x11/kdelibs4/Makefile
@@ -3,7 +3,7 @@
 
 PORTNAME=	kdelibs
 PORTVERSION=	${KDE4_VERSION}
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	x11 kde
 MASTER_SITES=	KDE/${KDE4_BRANCH}/${PORTVERSION}/src
 DIST_SUBDIR=	KDE/${PORTVERSION}
diff --git a/x11/kdelibs4/files/patch-cmake_modules_FindQt4.cmake b/x11/kdelibs4/files/patch-cmake_modules_FindQt4.cmake
index 7213d99f0cf2..57016d605b22 100644
--- a/x11/kdelibs4/files/patch-cmake_modules_FindQt4.cmake
+++ b/x11/kdelibs4/files/patch-cmake_modules_FindQt4.cmake
@@ -1,25 +1,9 @@
-Hunks 1 and 3:
-  Backport upstream CMake change de30173d ("Remove C compiler requirement from
-  FindQt4.cmake") so that it uses a C++ compiler to look for Q_WS_X11,
-  otherwise the build fails because <ciso646> from qglobal.h is not present
-  when using a C compiler.
-
-Hunk 2:
-  Do the same thing we do in devel/cmake's FindQt4.cmake patch. The idea behind
-  the change is that the directories FindQt4.cmake looks for might not be
-  present at the time CMake looks for them since the ports that actually create
-  them may not be required by the port calling CMake.
+Do the same thing we do in devel/cmake's FindQt4.cmake patch. The idea behind
+the change is that the directories FindQt4.cmake looks for might not be
+present at the time CMake looks for them since the ports that actually create
+them may not be required by the port calling CMake.
 --- cmake/modules/FindQt4.cmake.orig	2014-11-06 22:33:50 UTC
 +++ cmake/modules/FindQt4.cmake
-@@ -405,7 +405,7 @@ QT_CHECK_FLAG_EXISTS(-DQT_NO_DEBUG CMAKE
- QT_CHECK_FLAG_EXISTS(-DQT_NO_DEBUG CMAKE_CXX_FLAGS_MINSIZEREL "release minsize")
- 
- INCLUDE(MacroPushRequiredVars)
--INCLUDE(CheckSymbolExists)
-+INCLUDE(CheckCXXSymbolExists)
- INCLUDE(MacroAddFileDependencies)
- 
- SET(QT_USE_FILE ${CMAKE_ROOT}/Modules/UseQt4.cmake)
 @@ -638,23 +638,12 @@ IF (QT4_QMAKE_FOUND)
    # ask qmake for the imports directory
    IF (QT_LIBRARY_DIR AND NOT QT_IMPORTS_DIR OR QT_QMAKE_CHANGED)
@@ -46,29 +30,3 @@ Hunk 2:
  
  
    #############################################
-@@ -671,19 +660,19 @@ IF (QT4_QMAKE_FOUND)
-     SET(CMAKE_REQUIRED_FLAGS "-F${QT_LIBRARY_DIR} ")
-   ENDIF( QT_USE_FRAMEWORKS )
-   # Check for Window system symbols (note: only one should end up being set)
--  CHECK_SYMBOL_EXISTS(Q_WS_X11 "QtCore/qglobal.h" Q_WS_X11)
--  CHECK_SYMBOL_EXISTS(Q_WS_WIN "QtCore/qglobal.h" Q_WS_WIN)
--  CHECK_SYMBOL_EXISTS(Q_WS_QWS "QtCore/qglobal.h" Q_WS_QWS)
--  CHECK_SYMBOL_EXISTS(Q_WS_MAC "QtCore/qglobal.h" Q_WS_MAC)
-+  CHECK_CXX_SYMBOL_EXISTS(Q_WS_X11 "QtCore/qglobal.h" Q_WS_X11)
-+  CHECK_CXX_SYMBOL_EXISTS(Q_WS_WIN "QtCore/qglobal.h" Q_WS_WIN)
-+  CHECK_CXX_SYMBOL_EXISTS(Q_WS_QWS "QtCore/qglobal.h" Q_WS_QWS)
-+  CHECK_CXX_SYMBOL_EXISTS(Q_WS_MAC "QtCore/qglobal.h" Q_WS_MAC)
-   IF(Q_WS_MAC)
-     IF(QT_QMAKE_CHANGED)
-       UNSET(QT_MAC_USE_COCOA CACHE)
-     ENDIF(QT_QMAKE_CHANGED)
--    CHECK_SYMBOL_EXISTS(QT_MAC_USE_COCOA "QtCore/qconfig.h" QT_MAC_USE_COCOA)
-+    CHECK_CXX_SYMBOL_EXISTS(QT_MAC_USE_COCOA "QtCore/qconfig.h" QT_MAC_USE_COCOA)
-   ENDIF(Q_WS_MAC)
- 
-   IF (QT_QTCOPY_REQUIRED)
--     CHECK_SYMBOL_EXISTS(QT_IS_QTCOPY "QtCore/qglobal.h" QT_KDE_QT_COPY)
-+     CHECK_CXX_SYMBOL_EXISTS(QT_IS_QTCOPY "QtCore/qglobal.h" QT_KDE_QT_COPY)
-      IF (NOT QT_IS_QTCOPY)
-         MESSAGE(FATAL_ERROR "qt-copy is required, but hasn't been found")
-      ENDIF (NOT QT_IS_QTCOPY)