[zeromq-dev] Problems building zmq

Luca Boccassi luca.boccassi at gmail.com
Wed Nov 20 18:42:46 CET 2019


gcc zmqserver.c -o zmqserver `pkg-config --libs --cflags libczmq`

On Wed, 2019-11-20 at 10:23 -0600, Bill Engelke wrote:
> Hello all:
>  
> I would like to work with zmq in C, and I have hit problems trying to
> compile and link the server/client example here and trying to build
> any of the zguide examples here. 
>  
> Platform: Ubuntu (tried all of this using first the ARM libraries on
> an Odroid, then the x86_64 libraries on a PC running Ubuntu); same
> results
>  
> I used sudo-apt-get install libczmq-dev   (this is the only package I
> can find available for Ubuntu)
> sudo ldconfig
>  
> I have verified that the shared library is present in
> /usr/lib/x86_64-linux-gnu/     (libczmq, that is libczmq.so)
>  
> When I use this:
>  
> gcc zmqserver.c -o zmqserver -llibczmq -L.
>  
> I get:
>  
> /usr/bin/ld: cannot find -llibczmq
> collect2: error: ld returned 1 exit status
>  
> I have tried referencing the library directly:
>  
> /usr/bin/ld: cannot find -l:/usr/lib/x86_64-linux-gnu/libczmq
> collect2: error: ld returned 1 exit status
>  
> I have tried every possible combination of the order of the link
> references I can come up with, all with the same result.
>  
> Running using the verbose flag, we get:
>  
> gcc zmqserver.c -o zmqserver -llibczmq -L. -v
> Using built-in specs.
> COLLECT_GCC=gcc
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
> OFFLOAD_TARGET_NAMES=nvptx-none
> OFFLOAD_TARGET_DEFAULT=1
> Target: x86_64-linux-gnu
> Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.4.0-
> 1ubuntu1~18.04.1' --with-bugurl=file:///usr/share/doc/gcc-
> 7/README.Bugs --enable-
> languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --
> with-gcc-major-version-only --program-suffix=-7 --program-
> prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --
> libexecdir=/usr/lib --without-included-gettext --enable-threads=posix 
> --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
> --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-
> libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify
> --enable-libmpx --enable-plugin --enable-default-pie --with-system-
> zlib --with-target-system-zlib --enable-objc-gc=auto --enable-
> multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-
> multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --
> enable-offload-targets=nvptx-none --without-cuda-driver --enable-
> checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --
> target=x86_64-linux-gnu
> Thread model: posix
> gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1) 
> COLLECT_GCC_OPTIONS='-o' 'zmqserver' '-L.' '-v' '-mtune=generic' '-
> march=x86-64'
> /usr/lib/gcc/x86_64-linux-gnu/7/cc1 -quiet -v -imultiarch x86_64-
> linux-gnu zmqserver.c -quiet -dumpbase zmqserver.c -mtune=generic
> -march=x86-64 -auxbase zmqserver -version -fstack-protector-strong
> -Wformat -Wformat-security -o /tmp/cc2R1v53.s
> GNU C11 (Ubuntu 7.4.0-1ubuntu1~18.04.1) version 7.4.0 (x86_64-linux-
> gnu)
>                 compiled by GNU C version 7.4.0, GMP version 6.1.2,
> MPFR version 4.0.1, MPC version 1.1.0, isl version isl-0.19-GMP
> GGC heuristics: --param ggc-min-expand=100 --param ggc-min-
> heapsize=131072
> ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
> ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-
> gnu/7/../../../../x86_64-linux-gnu/include"
> #include "..." search starts here:
> #include <...> search starts here:
> /usr/lib/gcc/x86_64-linux-gnu/7/include
> /usr/local/include
> /usr/lib/gcc/x86_64-linux-gnu/7/include-fixed
> /usr/include/x86_64-linux-gnu
> /usr/include
> End of search list.
> GNU C11 (Ubuntu 7.4.0-1ubuntu1~18.04.1) version 7.4.0 (x86_64-linux-
> gnu)
>                 compiled by GNU C version 7.4.0, GMP version 6.1.2,
> MPFR version 4.0.1, MPC version 1.1.0, isl version isl-0.19-GMP
>  
> GGC heuristics: --param ggc-min-expand=100 --param ggc-min-
> heapsize=131072
> Compiler executable checksum: fa57db1fe2d756b22d454aa8428fd3bd
> COLLECT_GCC_OPTIONS='-o' 'zmqserver' '-L.' '-v' '-mtune=generic' '-
> march=x86-64'
> as -v --64 -o /tmp/ccKlQGoW.o /tmp/cc2R1v53.s
> GNU assembler version 2.30 (x86_64-linux-gnu) using BFD version (GNU
> Binutils for Ubuntu) 2.30
> COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-
> linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-
> linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/
> LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-
> linux-gnu/7/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-
> gnu/7/../../../../lib/:/lib/x86_64-linux-
> gnu/:/lib/../lib/:/usr/lib/x86_64-linux-
> gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-
> gnu/7/../../../:/lib/:/usr/lib/
> COLLECT_GCC_OPTIONS='-o' 'zmqserver' '-L.' '-v' '-mtune=generic' '-
> march=x86-64'
> /usr/lib/gcc/x86_64-linux-gnu/7/collect2 -plugin /usr/lib/gcc/x86_64-
> linux-gnu/7/liblto_plugin.so -plugin-opt=/usr/lib/gcc/x86_64-linux-
> gnu/7/lto-wrapper -plugin-opt=-fresolution=/tmp/ccOSG0IO.res -plugin-
> opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-
> opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -plugin-opt=-
> pass-through=-lgcc_s --sysroot=/ --build-id --eh-frame-hdr -m
> elf_x86_64 --hash-style=gnu --as-needed -dynamic-linker /lib64/ld-
> linux-x86-64.so.2 -pie -z now -z relro -o zmqserver
> /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/Scrt1.o
> /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crti.o
> /usr/lib/gcc/x86_64-linux-gnu/7/crtbeginS.o -L.
> -L/usr/lib/gcc/x86_64-linux-gnu/7 -L/usr/lib/gcc/x86_64-linux-
> gnu/7/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-
> gnu/7/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib
> -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-
> linux-gnu/7/../../.. /tmp/ccKlQGoW.o -llibczmq -lgcc --push-state --
> as-needed -lgcc_s --pop-state -lc -lgcc --push-state --as-needed
> -lgcc_s --pop-state /usr/lib/gcc/x86_64-linux-gnu/7/crtendS.o
> /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crtn.o
> /usr/bin/ld: cannot find -llibczmq
> collect2: error: ld returned 1 exit status
>  
> 
>  
>  
> Trying to build the zguide examples shows that something is missing
> or misconfigured for that as well: (using library cloned from 
> https://github.com/booksbyus/zguide)
>  
> ./build hwserver
> hwserver
> /usr/bin/ld: cannot find -luuid
> collect2: error: ld returned 1 exit status
>  
> 
>  
> I have looked thru online discussion groups to the point of
> exhaustion; some possible ideas here and here, but still no luck.
>  
> What am I missing?     -B.E.
>  
>  
>  
>  
>  
> 
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> zeromq-dev at lists.zeromq.org
> 
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> 
> 
-- 
Kind regards,
Luca Boccassi
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