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gnss-sdr / gnss-sdr

GNSS-SDR, an open-source software-defined GNSS receiver
https://gnss-sdr.org
GNU General Public License v3.0
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link errors with Position Independend Executable (PIE) mode #784

Closed rsmegal closed 3 months ago

rsmegal commented 3 months ago

gcc13-PIE - A default configuration to build all binaries in PIE mode is installed on opensuse Leap 15.6 and when building gnss-sdr (commit bb2d384ad6c2dfdb09f465a49e3925bd61fd9e6e) the following error reports are generated:

[ 95%] Linking CXX executable gnss-sdr /usr/lib64/gcc/x86_64-suse-linux/13/../../../../x86_64-suse-linux/bin/ld: ../core/libs/supl/libcore_libs_supl.a(supl.c.o): relocation R_X86_64_32 against hidden symbol `asn_DEF_ULP_PDU' can not be used when making a PIE object /usr/lib64/gcc/x86_64-suse-linux/13/../../../../x86_64-suse-linux/bin/ld: failed to set dynamic section sizes: bad value collect2: error: ld returned 1 exit status

/usr/lib64/gcc/x86_64-suse-linux/13/../../../../x86_64-suse-linux/bin/ld: ../algorithms/telemetry_decoder/libs/libswiftcnav/libtelemetry_decoder_libswiftcnav.a(cnav_msg.c.o): relocation R_X86_64_32 against `.bss' can not be used when making a PIE object; recompile with -fPIE

Any suggestions on the best way forward? I could deinstall gcc13-PIE without collateral damage to my system or I could switch to an alternative compiler; the system compiler is gcc 7.5.0. Is there a fix to gnss-sdr build configuration?

jwmelto commented 3 months ago

Just a guess here, but I tend to agree with this SO answer ... "do what the compiler tells you" and compile with -fPIE.

It's also possible that CMake doesn't understand PIE yet. You could ask at https://discourse.cmake.org.

I think this is likely a case of when you are on the bleeding edge, you can cut yourself, but it's pure speculation.

rsmegal commented 3 months ago

I am somewhat short of band aids at this time so I'll back away from the bleeding edge. I reverted to gcc (SUSE Linux) version 9.3.1 which is what I have been using for gnss-sdr up until now. The build works. For the record, gcc13-PIE worked for the gnuradio v3.10.10.0 build.