[Discuss-gnuradio] using fftw for neon with gnuradio

[Morgan Redfield]

Hi everyone,

I built and installed fftw with neon support for my E100 following the
instructions here: http://www.vesperix.com/arm.  Now I'm trying to
recompile gnuradio to take advantage of that. Unfortunately, I get an
error when I run make.

I'm running configure with the added --enable-shared option, and then
I run make. The error i get is:

libtool: link: g++  -fPIC -DPIC -shared -nostdlib
/usr/lib/gcc/arm-angstrom-linux-gnueabi/4.5.3/../../../crti.o
/usr/lib/gcc/arm-angstrom-linux-gnueabi/4.5.3/crtbeginS.o
.libs/libgnuradio-core.la.lnkscript -Wl,--whole-archive
filter/.libs/libfilter.a g72x/.libs/libccitt.a
viterbi/.libs/libviterbi.a general/.libs/libgeneral.a
gengen/.libs/libgengen.a io/.libs/libio.a missing/.libs/libmissing.a
reed-solomon/.libs/librs.a runtime/.libs/libruntime.a
hier/.libs/libhier.a -Wl,--no-whole-archive  -Wl,-rpath
-Wl,/home/root/gnuradio/gruel/src/lib/.libs -lrt
/home/root/gnuradio/gruel/src/lib/.libs/libgruel.so -L/usr/lib
-L/usr/lib/gcc/arm-angstrom-linux-gnueabi/4.5.3/../../..
-lboost_system -lboost_filesystem -lboost_thread -L/usr/local/lib
/usr/local/lib/libfftw3f.a /usr/lib/libgsl.so /usr/lib/libgslcblas.so
/usr/lib/libltdl.so -ldl
-L/usr/lib/gcc/arm-angstrom-linux-gnueabi/4.5.3 /usr/lib/libstdc++.so
-lm -lc -lgcc_s
/usr/lib/gcc/arm-angstrom-linux-gnueabi/4.5.3/crtendS.o
/usr/lib/gcc/arm-angstrom-linux-gnueabi/4.5.3/../../../crtn.o
-march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp -O3
-pthread   -pthread -Wl,-soname -Wl,libgnuradio-core-3.4.0git.so.0 -o
.libs/libgnuradio-core-3.4.0git.so.0.0.0
/usr/lib/gcc/arm-angstrom-linux-gnueabi/4.5.3/../../../../arm-angstrom-linux-gnueabi/bin/ld:
/usr/local/lib/libfftw3f.a(import-wisdom-from-file.o): relocation
R_ARM_MOVW_ABS_NC against `a local symbol' can not be used when making
a shared object; recompile with -fPIC
/usr/local/lib/libfftw3f.a: could not read symbols: Bad value
collect2: ld returned 1 exit status
make[8]: *** [libgnuradio-core.la] Error 1
make[8]: Leaving directory `/home/root/gnuradio/gnuradio-core/src/lib'
make[7]: *** [all-recursive] Error 1
make[7]: Leaving directory `/home/root/gnuradio/gnuradio-core/src/lib'
make[6]: *** [all] Error 2
make[6]: Leaving directory `/home/root/gnuradio/gnuradio-core/src/lib'
make[5]: *** [all-recursive] Error 1
make[5]: Leaving directory `/home/root/gnuradio/gnuradio-core/src'
make[4]: *** [all] Error 2
make[4]: Leaving directory `/home/root/gnuradio/gnuradio-core/src'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/home/root/gnuradio/gnuradio-core'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/root/gnuradio/gnuradio-core'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/root/gnuradio'
make: *** [all] Error 2

Has anyone had any success with this?

Thanks,
Morgan