Mac problem(?), new build, --with-debug-level=slowdebug

David Holmes david.holmes at
Mon Jan 14 00:17:50 UTC 2013


I could be mistaken but I thought the use of CXX= was intended as a make 
variable to override the value that configure places in the spec.gmk 
file - not as a way to force configure to output something to spec.gmk.

In that case the problem is likely that, due to various level of nested 
makes, these top-level make variable definitions may not get passed down 
to all the places that need them. In particular we have already seen 
several problems where things were not passed to hotspot in a way that 
hotspot would use.


On 12/01/2013 7:01 AM, David Chase wrote:
> Problem solved:  /Developer consider harmful, at least on Mountain Lion.
> Removing that and using the compilers installed by XCode in /usr/bin did the trick.
> HOWEVER - it seems dubious to me that configure should ignore the environment specification of CXX.
> I tried the following,
> where /usr/local/bin/g++ is a 4.8.0 compiler that configure will accept if it appears first on the path
> (this does not lead to a happy build, it merely demonstrates that the compiler is acceptable to configure):
> (1) sh ./configure CXX=/usr/local/bin/g++
> (2) CXX=/usr/local/bin/g++ sh ./configure
> I tried (2) because of ambiguous language from sh ./configure -help:
>    To assign environment variables (e.g., CC, CFLAGS...), specify them as
>    VAR=VALUE.  See below for descriptions of some of the useful variables.
> I understand that environment variable bindings precede the command on the command line,
> but the instructions did not say this explicitly, so I tried it both ways.
> I verified that my "sh" is not doing anything non-standard with its environment:
> bash-3.2$ CXX=/usr/local/bin/g++ sh -c printenv | grep CXX
> CXX=/usr/local/bin/g++
> In both cases this was the result of the configure:
> Tools summary:
> * Boot JDK:       ...
> * C Compiler:     i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build) version 2336.11.00) (at /usr/llvm-gcc-4.2/bin/llvm-gcc-4.2)
> * C++ Compiler:   i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build) version 2336.11.00) (at /usr/llvm-gcc-4.2/bin/llvm-g++-4.2)
> So, bug?
> David

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