Hello Barry, all, many thanks for the answer.
I followed your recommendation with the source build link (swap file and some extra install). Second i stepped in the pybombs build. I decided to start with build of ~/gr38. It stops here: (i assumed that it would be better to keep the runing binary) --snip--- Install uhd from source despite binary install available Y/[N]? n [ERROR] Error installing package uhd. Aborting. --end-- Second run was with Y, unfortunately with this result: --snip-- [ 2%] Built target uhd_rpclib [ 3%] Building CXX object lib/CMakeFiles/uhd.dir/convert/convert_with_neon.cpp.o In file included from /home/pi/gr38/src/uhd/host/lib/convert/convert_with_neon.cpp:10: /usr/lib/gcc/arm-linux-gnueabihf/8/include/arm_neon.h: In member function 'virtual void __convert_fc32_1_sc16_item32_le_1_PRIORITY_SIMD::operator()(const input_type&, const output_type&, size_t)': /usr/lib/gcc/arm-linux-gnueabihf/8/include/arm_neon.h:6740:1: error: inlining failed in call to always_inline 'float32x4_t vdupq_n_f32(float32_t)': target specific option mismatch vdupq_n_f32 (float32_t __a) ... much more --end-- BTW: ~/gr38 is almost empty, only src/uhd (i fear many of the build is installed in a place where it interferes with the existing installation?) I am lacking knowledge to proceed, sorry. Regards and vy73 Harald DD0VS Am Tue, 24 Dec 2019 12:37:11 -0500 schrieb Barry Duggan <ba...@dcsmail.net>: > Hi Harald, > > One possibility is to use PyBOMBS to build two separate folders which > are independent of the system files so there is no confusion. > > See https://github.com/gnuradio/pybombs#pybombs You could build 3.7 > in a folder named ~/GR37 and 3.8 in a folder ~/GR38 and each folder > would have all of the libraries contained within those folders. It > would take a while to build, but should work OK once you are done. > > To speed up compile time you might set up a swap file. See > https://wiki.gnuradio.org/index.php/InstallingGRFromSource_on_Raspberry_Pi > for reference. > > I worked on the documentation of both, so please let me know if you > run into any problems. > > Happy holidays and 73,
