[OpenJDK 2D-Dev] [PATCH FOR REVIEW] Building ExtensionSubtables.cpp should use -fno-strict-aliasing

[Andrew Haley]

On 05/29/2012 06:12 PM, Kelly O'Hair wrote:
> 
> You should be able to do something like:
> 
> # Turn off aliasing with GCC for ExtensionSubtables.cpp
> ifeq ($(PLATFORM), linux)
>   CXXFLAGS += $(CXXFLAGS_$(@F))
>   CC_NEWER_THAN_43 := \
>         $(shell $(EXPR) $(CC_MAJORVER) \> 4 \| \
>             \( $(CC_MAJORVER) = 4 \& $(CC_MINORVER) \> 3 \) )
>    ifeq ($(CC_NEWER_THAN_43),1)
>        CXXFLAGS_ExtensionSubtables.o = -fno-strict-aliasing
>    endif
> endif

No way: -fno-strict-aliasing has been in GCC for a very long time, and it's
certainly in 4.0.  You'll need it in 4.3.

Andrew.