Why is installation failing at libgap?

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I'm trying to build sage 5.9 on OpenSuSE 12.3.

It fails when building libgap:

In file included from system.c:45:0:
./string.h:213:56: error: 'libGAP_LAST_REAL_TNUM' undeclared here (not in a function)

I've tried compiling with SAGE_INSTALL_GCC=yes and with SAGE_INSTALL_GCC=no.

From what I can tell, string.h fails to include objects.h (where libGAP_LAST_REAL_TNUM is defined).

I posted a question here (https://groups.google.com/forum/?from...), but their suggestions haven't helped.