Add target for Mac OS X 10.11 'El Capitan'

Change-Id: I174f5b41be384894e41b8e2926cbf8fd0f8e21b2

build/make/configure.sh

@@ -688,6 +688,10 @@ process_common_toolchain() {
         tgt_isa=x86_64
         tgt_os=darwin14
         ;;
+      *darwin15*)
+        tgt_isa=x86_64
+        tgt_os=darwin15
+        ;;
       x86_64*mingw32*)
         tgt_os=win64
         ;;
@@ -795,6 +799,10 @@ process_common_toolchain() {
       add_cflags  "-mmacosx-version-min=10.10"
       add_ldflags "-mmacosx-version-min=10.10"
       ;;
+    *-darwin15-*)
+      add_cflags  "-mmacosx-version-min=10.11"
+      add_ldflags "-mmacosx-version-min=10.11"
+      ;;
     *-iphonesimulator-*)
       add_cflags  "-miphoneos-version-min=${IOS_VERSION_MIN}"
       add_ldflags "-miphoneos-version-min=${IOS_VERSION_MIN}"

configure

@@ -122,6 +122,7 @@ all_platforms="${all_platforms} x86-darwin11-gcc"
 all_platforms="${all_platforms} x86-darwin12-gcc"
 all_platforms="${all_platforms} x86-darwin13-gcc"
 all_platforms="${all_platforms} x86-darwin14-gcc"
+all_platforms="${all_platforms} x86-darwin15-gcc"
 all_platforms="${all_platforms} x86-iphonesimulator-gcc"
 all_platforms="${all_platforms} x86-linux-gcc"
 all_platforms="${all_platforms} x86-linux-icc"
@@ -142,6 +143,7 @@ all_platforms="${all_platforms} x86_64-darwin11-gcc"
 all_platforms="${all_platforms} x86_64-darwin12-gcc"
 all_platforms="${all_platforms} x86_64-darwin13-gcc"
 all_platforms="${all_platforms} x86_64-darwin14-gcc"
+all_platforms="${all_platforms} x86_64-darwin15-gcc"
 all_platforms="${all_platforms} x86_64-iphonesimulator-gcc"
 all_platforms="${all_platforms} x86_64-linux-gcc"
 all_platforms="${all_platforms} x86_64-linux-icc"