Here's the interesting part: -------------------- creating build/temp.linux-x86_64-2.4/build/src.linux-x86_64-2.4/numpy/core/src compile options: '-Ibuild/src.linux-x86_64-2.4/numpy/core/src -Inumpy/core/include -Ibuild/src.linux-x86_64-2.4/numpy/core/include/numpy -Inumpy/core/src -Inumpy/core/include -I/usr/include/python2.4 -c' x86_64-pc-linux-gnu-gcc: build/src.linux-x86_64-2.4/numpy/core/src/umathmodule.c numpy/core/src/umathmodule.c.src:332: error: static declaration of âtruncâ follows non-static declaration ---------------------- Here's some generic info about the system. gcc (GCC) 4.1.2 (Gentoo 4.1.2 p1.0.1) Copyright (C) 2006 Free Software Foundation, Inc. C compiler: x86_64-pc-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -fPIC compile options: '-c' x86_64-pc-linux-gnu-gcc: _configtest.c x86_64-pc-linux-gnu-gcc -pthread _configtest.o -L/usr/lib64 -lf77blas -lcblas -latlas -o _configtest ATLAS version 3.8.2 built by root on Thu Jun 19 14:40:27 EDT 2008: UNAME : Linux back2tux 2.6.22-suspend2-r1 #8 Fri Feb 15 17:00:17 EST 2008 x86_64 Mobile AMD Athlon(tm) 64 Processor 3400+ AuthenticAMD GNU/Linux INSTFLG : -1 0 -a 1 ARCHDEFS : -DATL_OS_Linux -DATL_ARCH_HAMMER -DATL_CPUMHZ=2205 -DATL_SSE2 -DATL_SSE1 -DATL_3DNow -DATL_USE64BITS -DATL_GAS_x8664 F2CDEFS : -DAdd_ -DF77_INTEGER=int -DStringSunStyle CACHEEDGE: 262144 F77 : gfortran, version GNU Fortran 95 (GCC) 4.1.2 (Gentoo 4.1.2 p1.0.1) F77FLAGS : -O2 -m64 SMC : x86_64-pc-linux-gnu-gcc, version x86_64-pc-linux-gnu-gcc (GCC) 4.1.2 (Gentoo 4.1.2 p1.0.1) SMCFLAGS : -march=k8 -O2 -pipe -m64 SKC : x86_64-pc-linux-gnu-gcc, version x86_64-pc-linux-gnu-gcc (GCC) 4.1.2 (Gentoo 4.1.2 p1.0.1) SKCFLAGS : -march=k8 -O2 -pipe -m64