Work around Arm Compiler 6 stdvector perfomance cliff

Author: theotherjimmy

tools/profiles/debug.json

@@ -19,7 +19,7 @@
         "common": ["-c", "--target=arm-arm-none-eabi", "-mthumb", "-g", "-O0",
                    "-Wno-armcc-pragma-push-pop", "-Wno-armcc-pragma-anon-unions",
                    "-DMULADDC_CANNOT_USE_R7", "-fdata-sections",
-                   "-fno-exceptions", "-MMD"],
+                   "-fno-exceptions", "-MMD", "-D_LIBCPP_EXTERN_TEMPLATE(...)="],
         "asm": [],
         "c": ["-D__ASSERT_MSG", "-std=gnu99"],
         "cxx": ["-fno-rtti", "-std=gnu++98"],

tools/profiles/develop.json

@@ -18,7 +18,7 @@
         "common": ["-c", "--target=arm-arm-none-eabi", "-mthumb", "-Os",
                    "-Wno-armcc-pragma-push-pop", "-Wno-armcc-pragma-anon-unions",
                    "-DMULADDC_CANNOT_USE_R7", "-fdata-sections",
-                   "-fno-exceptions", "-MMD"],
+                   "-fno-exceptions", "-MMD", "-D_LIBCPP_EXTERN_TEMPLATE(...)="],
         "asm": [],
         "c": ["-D__ASSERT_MSG", "-std=gnu99"],
         "cxx": ["-fno-rtti", "-std=gnu++98"],

tools/profiles/release.json

@@ -18,7 +18,7 @@
         "common": ["-c", "--target=arm-arm-none-eabi", "-mthumb", "-Oz",
                    "-Wno-armcc-pragma-push-pop", "-Wno-armcc-pragma-anon-unions",
                    "-DMULADDC_CANNOT_USE_R7", "-fdata-sections",
-                   "-fno-exceptions", "-MMD"],
+                   "-fno-exceptions", "-MMD", "-D_LIBCPP_EXTERN_TEMPLATE(...)="],
         "asm": [],
         "c": ["-D__ASSERT_MSG", "-std=gnu99"],
         "cxx": ["-fno-rtti", "-std=gnu++98"],