Problem with configure compiling 64-bit under Solaris 10

[Volker Lendecke]

On Sun, Mar 15, 2009 at 01:37:32PM -0400, John Center wrote:
> There is a problem with configure when trying to compile 64-bit binaries 
> on Solaris 10 using Sun Studio 12.  When some of the tests are run, the 
> CFLAGS variable is completely replaced with one that contains an option 
> for testing.  For example, when testing for compiler warnings, CFLAGS is 
> replaced with Werror_FLAGS, which can contain -Werror, -w2 or -errwarn. 
>  This fails in 64-bit mode because the appropriate option, "-m64", is 
> not included.  Without this flag, conftest fails with a "wrong ELF 
> class" error, which configure does not catch.
> 
> The offending lines in configure are often in the form:
> 
> 	old_CFLAGS="$CFLAGS";
> 	CFLAGS="$Werror_FLAGS";
> 	export CFLAGS;
> 
> where Werror_FLAGS is defined as:  Werror_FLAGS="<errflag>".
> 
> I think Werror_FLAGS should be redefined instead as:
> 
> 	Werror_FLAGS="$CFLAGS <errflag>"
> 
> maintaining the builder's CFLAGS.  This would prevent problems like this 
> from occurring in the future.

Do you want to provide a git-format-patch style patch?

Thanks,

Volker
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