[Buildroot] [PATCH] webkitgtk: add upstream patch for failed gcc6 builds

[Gustavo Zacarias]

Signed-off-by: Gustavo Zacarias <gustavo at zacarias.com.ar>
---
 package/webkitgtk/0001-fix-gcc6-builds.patch | 40 ++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 package/webkitgtk/0001-fix-gcc6-builds.patch

diff --git a/package/webkitgtk/0001-fix-gcc6-builds.patch b/package/webkitgtk/0001-fix-gcc6-builds.patch
new file mode 100644
index 0000000..83e038a
--- /dev/null
+++ b/package/webkitgtk/0001-fix-gcc6-builds.patch
@@ -0,0 +1,40 @@
+Upstream, from: https://trac.webkit.org/changeset/205672
+
+Signed-off-by: Gustavo Zacarias <gustavo at zacarias.com.ar>
+
+Index: trunk/Source/cmake/OptionsCommon.cmake
+===================================================================
+--- trunk/Source/cmake/OptionsCommon.cmake	(revision 204084)
++++ trunk/Source/cmake/OptionsCommon.cmake	(revision 205672)
+@@ -36,4 +36,31 @@
+     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fcolor-diagnostics")
+     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcolor-diagnostics")
++endif ()
++
++# Ensure that the default include system directories are added to the list of CMake implicit includes.
++# This workarounds an issue that happens when using GCC 6 and using system includes (-isystem).
++# For more details check: https://bugs.webkit.org/show_bug.cgi?id=161697
++macro(DETERMINE_GCC_SYSTEM_INCLUDE_DIRS _lang _compiler _flags _result)
++    file(WRITE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy" "\n")
++    separate_arguments(_buildFlags UNIX_COMMAND "${_flags}")
++    execute_process(COMMAND ${_compiler} ${_buildFlags} -v -E -x ${_lang} -dD dummy
++                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/CMakeFiles OUTPUT_QUIET
++                    ERROR_VARIABLE _gccOutput)
++    file(REMOVE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy")
++    if ("${_gccOutput}" MATCHES "> search starts here[^\n]+\n *(.+) *\n *End of (search) list")
++        set(${_result} ${CMAKE_MATCH_1})
++        string(REPLACE "\n" " " ${_result} "${${_result}}")
++        separate_arguments(${_result})
++    endif ()
++endmacro()
++
++if (CMAKE_COMPILER_IS_GNUCC)
++   DETERMINE_GCC_SYSTEM_INCLUDE_DIRS("c" "${CMAKE_C_COMPILER}" "${CMAKE_C_FLAGS}" SYSTEM_INCLUDE_DIRS)
++   set(CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES ${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES} ${SYSTEM_INCLUDE_DIRS})
++endif ()
++
++if (CMAKE_COMPILER_IS_GNUCXX)
++   DETERMINE_GCC_SYSTEM_INCLUDE_DIRS("c++" "${CMAKE_CXX_COMPILER}" "${CMAKE_CXX_FLAGS}" SYSTEM_INCLUDE_DIRS)
++   set(CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES} ${SYSTEM_INCLUDE_DIRS})
+ endif ()
+ 
-- 
2.7.3