leansdr make embedded issue for plutosdr

[ghost]

Hi I was installing leansdr and I included the binaries for libiio and the make step went through.

But when I do make embedded I get the following error.

$ make embedded g++ -O3 -I.. -DVERSION=\"leansdr-1.2.0-27-ge6416aa\" -Wall -Wno-sign-compare -Wno-array-bounds -Wno-unused-variable -Ilibiio leaniiorx.cc -lfftw3f -lpthread -Llibiio -L. -liio -lpthread -lxml2 -lz -llzma -static -o leaniiorx.x86_64 /usr/bin/ld: cannot find -liio collect2: error: ld returned 1 exit status Makefile:83: recipe for target 'leaniiorx.x86_64' failed make: *** [leaniiorx.x86_64] Error 1

Output of $ ld -liio --verbose

GNU ld (GNU Binutils for Ubuntu) 2.26.1 Supported emulations: elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu i386linux elf_l1om elf_k1om i386pep i386pe using internal linker script:

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================================================== attempt to open //usr/local/lib/x86_64-linux-gnu/libiio.so failed attempt to open //usr/local/lib/x86_64-linux-gnu/libiio.a failed attempt to open //lib/x86_64-linux-gnu/libiio.so failed attempt to open //lib/x86_64-linux-gnu/libiio.a failed attempt to open //usr/lib/x86_64-linux-gnu/libiio.so succeeded -liio (//usr/lib/x86_64-linux-gnu/libiio.so) librt.so.1 needed by //usr/lib/x86_64-linux-gnu/libiio.so found librt.so.1 at //lib/x86_64-linux-gnu/librt.so.1 libusb-1.0.so.0 needed by //usr/lib/x86_64-linux-gnu/libiio.so found libusb-1.0.so.0 at //lib/x86_64-linux-gnu/libusb-1.0.so.0 libxml2.so.2 needed by //usr/lib/x86_64-linux-gnu/libiio.so found libxml2.so.2 at //usr/lib/x86_64-linux-gnu/libxml2.so.2 libpthread.so.0 needed by //usr/lib/x86_64-linux-gnu/libiio.so found libpthread.so.0 at //lib/x86_64-linux-gnu/libpthread.so.0 libc.so.6 needed by //usr/lib/x86_64-linux-gnu/libiio.so found libc.so.6 at //lib/x86_64-linux-gnu/libc.so.6 libudev.so.1 needed by //lib/x86_64-linux-gnu/libusb-1.0.so.0 found libudev.so.1 at //lib/x86_64-linux-gnu/libudev.so.1 libdl.so.2 needed by //usr/lib/x86_64-linux-gnu/libxml2.so.2 found libdl.so.2 at //lib/x86_64-linux-gnu/libdl.so.2 libicuuc.so.55 needed by //usr/lib/x86_64-linux-gnu/libxml2.so.2 found libicuuc.so.55 at //usr/lib/x86_64-linux-gnu/libicuuc.so.55 libz.so.1 needed by //usr/lib/x86_64-linux-gnu/libxml2.so.2 found libz.so.1 at //lib/x86_64-linux-gnu/libz.so.1 liblzma.so.5 needed by //usr/lib/x86_64-linux-gnu/libxml2.so.2 found liblzma.so.5 at //lib/x86_64-linux-gnu/liblzma.so.5 libm.so.6 needed by //usr/lib/x86_64-linux-gnu/libxml2.so.2 found libm.so.6 at //lib/x86_64-linux-gnu/libm.so.6 ld-linux-x86-64.so.2 needed by //lib/x86_64-linux-gnu/libpthread.so.0 found ld-linux-x86-64.so.2 at //lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 libicudata.so.55 needed by //usr/lib/x86_64-linux-gnu/libicuuc.so.55 found libicudata.so.55 at //usr/lib/x86_64-linux-gnu/libicudata.so.55 libstdc++.so.6 needed by //usr/lib/x86_64-linux-gnu/libicuuc.so.55 found libstdc++.so.6 at //usr/lib/x86_64-linux-gnu/libstdc++.so.6 libgcc_s.so.1 needed by //usr/lib/x86_64-linux-gnu/libicuuc.so.55 found libgcc_s.so.1 at //lib/x86_64-linux-gnu/libgcc_s.so.1 ld: warning: cannot find entry symbol _start; not setting start address

[ghost]

Hi again

I am still stuck on the make embedded part. Some help would be appreciated.

The output for make embedded after generating the libiio.a file is g++ -O3 -I.. -DVERSION=\"leansdr-1.2.0-27-ge6416aa\" -Wall -Wno-sign-compare -Wno-array-bounds -Wno-unused-variable -Ilibiio leaniiorx.cc -lfftw3f -lpthread -Llibiio -L. -liio -lpthread -lxml2 -lz -llzma -static -o leaniiorx.x86_64 /usr/bin/ld: dynamic STT_GNU_IFUNC symbol strcmp' with pointer equality in/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libc.a(strcmp.o)' can not be used when making an executable; recompile with -fPIE and relink with -pie collect2: error: ld returned 1 exit status Makefile:83: recipe for target 'leaniiorx.x86_64' failed make: *** [leaniiorx.x86_64] Error 1

[pabr]

It looks like you are running "make embedded" on a x86_64 machine, so the Makefile is trying to generate a binary for x86_64. If this is really what you want, try the same command without "-static".

But leaniiorx is intended to run on-board the plutosdr. The Makefile can generate a portable (static) plutosdr binary if you run it on another arm-linux board (e.g. raspberry pi with some versions of the OS) with libiio already compiled, but that was a quick hack. The proper approach is documented at https://wiki.analog.com/university/tools/pluto/devs/embedded_code , but that's a lot more work.

You can also test leansdr binaries from leantrx to decide whether you really want to recompile the latest version. Download from https://www.pabr.org/radio/leantrx/leantrx.en.html#plutosdr_net_install

[ghost]

Hi

I solved it. I removed the previous installation and did a new clean install and everything worked. Thanks.

I have another question though, I want to use leandvb to offline decode the dvb-s2 I have pre-recorded. Now the data type I have is from Matlab using AD936x and its in double complex IQ. How can I convert it to the data type supported by leandvb.

I have the following formats I can receive the dvb-s2 in Matlab:

1. int16 — Integer values are the raw 16-bit I and Q samples from the board. The 12-bit value from the ADC of the AD9361 RF chip is sign-extended to 16 bits.

2. single — Single-precision floating point values are scaled to the range of [–0.0625, 0.0625]. The block derives this value from the sign-extended 16 bits received from the board.

3. double — Double-precision floating point values are scaled to the range of [–0.0625, 0.0625]. The block derives this value from the sign-extended 16 bits received from the board.

I have been trying to convert using typecast but its not working. Thanks !

[ghost]

Also, is there a way I can integrate leandvb in my Matlab code? I am looking for a dvb s2 decoder.

[pabr]

Hopefully a Matlab expert will be able to answer your question. There's probably a way to write IQ data to a file in binary mode using "single" format ("Single-precision floating point values"), then execute leandvb from Matlab with a system() command, then read the resulting MPEG TS file.