multiple definition

[karpenkoby]

Hi, when I do make. ld returns multiple definition of errors

/usr/bin/ld: amd.o: /home/vladimir/repository/cu/wdsp/RXA.h: 164: multiple definition of rxa '; linux_port.o: /home/vladimir/repository/cu/wdsp/RXA.h: 164: first defined here /usr/bin/ld: amd.o: /home/vladimir/repository/cu/wdsp/channel.h: 58: multiple definition of ch '; linux_port.o: /home/vladimir/repository/cu/wdsp/channel.h: 58: first defined here
/usr/bin/ld: amd.o: /home/vladimir/repository/cu/wdsp/analyzer.h: 140: multiple definition of pdisp '; linux_port.o: /home/vladimir/repository/cu/wdsp/analyzer.h: 140: first defined here /usr/bin/ld: amd.o: /home/vladimir/repository/cu/wdsp/TXA.h: 163: multiple definition of txa '; linux_port.o: /home/vladimir/repository/cu/wdsp/TXA.h: 163: first defined here
/usr/bin/ld: amd.o: /home/vladimir/repository/cu/wdsp/dexp.h: 93: multiple definition of pdexp '; linux_port.o: /home/vladimir/repository/cu/wdsp/dexp.h: 93: first defined here /usr/bin/ld: ammod.o: /home/vladimir/repository/cu/wdsp/channel.h: 58: multiple definition of ch '; linux_port.o: /home/vladimir/repository/cu/wdsp/channel.h: 58: first defined here
/usr/bin/ld: ammod.o: /home/vladimir/repository/cu/wdsp/TXA.h: 163: multiple definition of `txa '; linux_port.o: /home/vladimir/repository/cu/wdsp/TXA.h: 163: first defined here

etc. How to be? Thank you

gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/10.1.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --with-isl --with-linker-hash-style=gnu --with-system-zlib --enable-__cxa_atexit --enable-cet=auto --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object --enable-install-libiberty --enable-linker-build-id --enable-lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --disable-libssp --disable-libstdcxx-pch --disable-libunwind-exceptions --disable-werror gdc_include_dir=/usr/include/dlang/gdc
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.1.0 (GCC)

[g0orx]

I am not having any problems with Ubuntu 20.04. It may be the gcc version 10.1.0 has changed something. The version on my system is 9.3.0.
Which Linux distribution are you running?

[g0orx]

I have just checked gcc 10.1.0 and it now defaults to -fno-common which is causing the problem. To fix this I need to go through the source code header files to make sure there is an extern on all declared variables. I will push an update when I have had time to make these changes.

[g0orx]

Pushed changes to to header files.