On 10/08/2013 04:13 PM, Rhys Ulerich wrote: > On Intrepid, a BG/P system up at Argonne with some fun old IBM XL > compilers, a user of mine is seeing gnulib/float.h containing the line > #include " " > which appears to be arising from > configure:13477: checking absolute name of <float.h> > configure:13516: result: "" > due to > http://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=blob_plain;f=m4/float_h.m4 > where > host_cpu='powerpc64' > host_os='linux-gnu' > host_vendor='unknown' > > What information might I collect to help debug this? This is atop > gnulib HEAD. I have a full config.log sitting around and would be > happy to send it someone's way in addition to the generated configure > file.
The full config.log would be useful to see if configure left any more hints about why it couldn't determine an absolute name for <float.h>; you might also want to try repeating the $CC tests listed in the config.log but do it by hand, to give us more details about the compilation environment and what the preprocessor will let us learn about a system header. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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