Ticket #49299: akonadi_use_c++11.diff

Portfile

@@ -26 +26 @@
                     port:boost \
                     port:shared-mime-info
 
-#Older compilers cannot handle c++0x instructions contained in akonadi
-compiler.blacklist  gcc-4.2 llvm-gcc-4.2 apple-gcc-4.2
-compiler.blacklist-append   {clang < 500}
+# require c++11
 
+post-patch {
+    reinplace "s/c++0x/c++11/" ${worksrcpath}/CMakeLists.txt
+}
+
+if {${configure.cxx_stdlib} eq "libstdc++"} {
+
+    # *clang* when using libstdc++ do not seem to support C++11;
+    # C++11 support seems to need GCC 4.7+ when using libstdc++;
+    # could use C++0x support on GCC4.[56], but just ignore it since
+    # there are newer compilers already in place as defaults.
+
+    # Blacklist GCC compilers not supporting C++11 and all CLANG.
+    # This is probably not necessary, but it's good practice.
+
+    compiler.blacklist-append *clang* {*gcc-3*} {*gcc-4.[0-6]}
+
+    # and whitelist GCC compilers that support C++11. wish there were
+    # a better way.  these will be used in the order provided.
+
+    compiler.whitelist macports-gcc-5 macports-gcc-4.9 macports-gcc-4.8 macports-gcc-4.7
+
+} else {
+
+    # using libc++;
+    # Blacklist Clang not supporting C++11 in some form and all GCC.
+    # Just use the cxx11 PortGroup for this specific case.
+
+    PortGroup cxx11 1.0
+
+}
+
 configure.args-append  -DPOSTGRES_PATH=Off
 # mute akonadiserver which is usually overly chatty:
 configure.cflags-append     -DQT_NO_DEBUG_OUTPUT