So I have no idea what's causing this, but here are at least some
reasonable things to try:

> building 'sage.libs.fplll.fplll' extension
> gcc -DNDEBUG -g -O3 -Wall -Wstrict-prototypes -Wall -g -Wall -g -fPIC -
> I/mnt/usb1/scratch/rlm/sage-4.3.1.alpha3/local/include/fplll -I/mnt/
> usb1/scratch/rlm/sage-4.3.1.alpha3/local//include -I/mnt/usb1/scratch/
> rlm/sage-4.3.1.alpha3/local//include/csage -I/mnt/usb1/scratch/rlm/
> sage-4.3.1.alpha3/devel//sage/sage/ext -I/mnt/usb1/scratch/rlm/
> sage-4.3.1.alpha3/local/include/python2.6 -c sage/libs/fplll/fplll.cpp
> -o build/temp.linux-x86_64-2.6/sage/libs/fplll/fplll.o -w
> cc1plus: warning: command line option "-Wstrict-prototypes" is valid
> for Ada/C/ObjC but not for C++
> ..............
>

1) Kill the -O3, and see if the file compiles. If so, start bumping it
back up until you see the hang.

2) Kill the -w at the end, so you can at least see some commentary
from the compiler. (-w suppresses all warnings.)

3) Diff this with an install.log from when it worked, see if anything
jumps out at you.

-cc
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