[GDCM2] Update to 2.6.8

ports/gdcm2/CONTROL

@@ -1,4 +1,4 @@
 Source: gdcm2
-Version: 2.6.7
+Version: 2.6.8
 Description: Grassroots DICOM library
 Build-Depends: zlib, expat

ports/gdcm2/gdcm-include-dir.patch

@@ -1,10 +0,0 @@
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -409,6 +409,7 @@
- if(GDCM_USE_SYSTEM_ZLIB)
-   # If user say so, then this is a requirement !
-   find_package(ZLIB REQUIRED)
-+  include_directories(${ZLIB_INCLUDE_DIR})
-   set(GDCM_ZLIB_LIBRARIES ${ZLIB_LIBRARIES})
- else()
-   set(GDCM_ZLIB_LIBRARIES "gdcmzlib")

ports/gdcm2/gdcmSystem.patch

@@ -0,0 +1,11 @@
+--- a/Source/Common/gdcmSystem.cxx
++++ b/Source/Common/gdcmSystem.cxx
+@@ -977,7 +977,7 @@
+       }
+     }
+   // We need to tell the user...
+-  gdcmWarningMacro( "Could not find Charset from alias: " + alias );
++  gdcmWarningMacro( std::string("Could not find Charset from alias: ") + alias );
+   return NULL;
+ }
+ #endif //_WIN32

ports/gdcm2/portfile.cmake

@@ -1,26 +1,45 @@
+# Common Ambient Variables:
+#   CURRENT_BUILDTREES_DIR    = ${VCPKG_ROOT_DIR}\buildtrees\${PORT}
+#   CURRENT_PACKAGES_DIR      = ${VCPKG_ROOT_DIR}\packages\${PORT}_${TARGET_TRIPLET}
+#   CURRENT_PORT DIR          = ${VCPKG_ROOT_DIR}\ports\${PORT}
+#   PORT                      = current port name (zlib, etc)
+#   TARGET_TRIPLET            = current triplet (x86-windows, x64-windows-static, etc)
+#   VCPKG_CRT_LINKAGE         = C runtime linkage type (static, dynamic)
+#   VCPKG_LIBRARY_LINKAGE     = target library linkage type (static, dynamic)
+#   VCPKG_ROOT_DIR            = <C:\path\to\current\vcpkg>
+#   VCPKG_TARGET_ARCHITECTURE = target architecture (x64, x86, arm)
+#
+
 include(vcpkg_common_functions)
-set(SOURCE_PATH ${CURRENT_BUILDTREES_DIR}/src/gdcm-2.6.7)
+set(SOURCE_PATH ${CURRENT_BUILDTREES_DIR}/src/GDCM-2.6.8)
 vcpkg_download_distfile(ARCHIVE
-    URLS "https://downloads.sourceforge.net/project/gdcm/gdcm 2.x/GDCM 2.6.7/gdcm-2.6.7.tar.gz"
-    FILENAME "gdcm-2.6.7.tar.gz"
-    SHA512 2eefad47e4d36038db8d120a91dc0a40816d045e3562c711b6dba7aec5788d4b08a00966bf4c82dc354cb1aa654bff4200afff022a42f2ab58bf7baafe69ff05
+    URLS "https://github.com/malaterre/GDCM/archive/v2.6.8.zip"
+    FILENAME "GDCM-2.6.8.zip"
+    SHA512 52d3b0e8a3dab3077ee63e08f9ed727cb66fdc511935664b9d446e753905103543dabe9baa0b4c4264317b6f11deaf6869d0f9180df032589422de0dac7fc787
 )
+
 vcpkg_extract_source_archive(${ARCHIVE})
+
 vcpkg_apply_patches(
     SOURCE_PATH ${SOURCE_PATH}
-    PATCHES "${CMAKE_CURRENT_LIST_DIR}/gdcm-include-dir.patch"
+    PATCHES
+        ${CMAKE_CURRENT_LIST_DIR}/gdcmSystem.patch
 )
+
+
 if(VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)
     set(GDCM_BUILD_SHARED_LIBS ON)
 else()
     set(GDCM_BUILD_SHARED_LIBS OFF)
 endif()
+
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
-	# PREFER_NINJA # Disable this option if project cannot be built with Ninja
+	PREFER_NINJA # Disable this option if project cannot be built with Ninja
 	OPTIONS
 		-DGDCM_BUILD_DOCBOOK_MANPAGES=OFF
 		-DGDCM_BUILD_SHARED_LIBS=${GDCM_BUILD_SHARED_LIBS}
+		-DGDCM_INSTALL_INCLUDE_DIR=include
 		-DGDCM_USE_SYSTEM_EXPAT=ON
 		-DGDCM_USE_SYSTEM_ZLIB=ON
 		${ADDITIONAL_OPTIONS}