I also run into this problem these days. Finally I found that adding "env
CGO_LDFLAGS=-no-pie" to go build command line could solve this problem. For
example, "env CGO_LDFLAGS=-no-pie go build -o main main.go".
On Monday, July 1, 2019 at 8:22:08 AM UTC+8, czha...@gmail.com wrote:
>
> I posted this question in SO, and was suggested to post here for more help:
>
>
> ----------------------
>
> I tried to link an existing C++ library to go code. The C++ library only
> has a static library and a header file, no source code.
>
> I used swigc to generate a libfoo.go and I wrote a simple libb.go to build
> this library. This worked well on ubuntu 16.04 with gcc-6 earlier.
>
> However, once I upgraded to ubuntu 18, and even with older go1.9 and
> gcc-6, which used to work, I am hitting the following error:
>
> /usr/bin/ld: ./lib/libfoo.a(parser.o): relocation R_X86_64_32S against symbol
> `xmlSAX2IgnorableWhitespace' can not be used when making a PIE object;
> recompile with -fPIC
> /usr/bin/ld: ./lib/libfoo.a(tree.o): relocation R_X86_64_32 against
> `.rodata.str1.1' can not be used when making a PIE object; recompile with
> -fPIC
>
> I have downgraded both go compiler and gcc to the version that used to
> work.
>
> The following is the libb.go that used to work
>
> /*
> #cgo CXXFLAGS: -std=c++11 -D_GLIBCXX_USE_CXX11_ABI=0 -w
> #cgo CFLAGS: -I${SRCDIR}/include -w
> #cgo LDFLAGS: -Wl -rpath,./lib, -L${SRCDIR}/lib -l:libfoo.a -l:libxml2.a
> */import "C"
>
> What should I do get this fixed? I searched and it seems that I have to
> recompile that static library, which is mission impossible in my case. I
> tried to pass the -no-pie parameter to LDFLAGS, that didn't work either.
>
>
>
> Thanks!
>
> ----------------------
>
>
> 1, first thing first, I don't have the c++ source code, so I can't
> recompile it.
>
> 2, I am using ubuntu 18, initially, I believe I install go via "apt-get
> install", but later I uninstall that version using "apt-get remove" , and
> then downloaded go1.9 pkg from official website and install directly.
>
> 3, go env gives:
>
> GOARCH="amd64"
>
> GOBIN=""
>
> GOEXE=""
>
> GOHOSTARCH="amd64"
>
> GOHOSTOS="linux"
>
> GOOS="linux"
>
> GOPATH="/home/coolart/work/go"
>
> GORACE=""
>
> GOROOT="/usr/local/go"
>
> GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
>
> GCCGO="gccgo"
>
> CC="gcc"
>
> GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0
> -fdebug-prefix-map=/tmp/go-build628698308=/tmp/go-build
> -gno-record-gcc-switches"
>
> CXX="g++"
>
> CGO_ENABLED="1"
>
> CGO_CFLAGS="-g -O2"
>
> CGO_CPPFLAGS=""
>
> CGO_CXXFLAGS="-g -O2"
>
> CGO_FFLAGS="-g -O2"
>
> CGO_LDFLAGS="-g -O2"
>
> PKG_CONFIG="pkg-config"
>
>
> 4, some system information
>
>
> go version go1.9.7 linux/amd64
>
>
> No LSB modules are available.
>
> Distributor ID: Ubuntu
>
> Description: Ubuntu 18.04.2 LTS
>
> Release: 18.04
>
> Codename: bionic
>
>
> Using built-in specs.
>
> COLLECT_GCC=gcc
>
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
>
> Target: x86_64-linux-gnu
>
> Configured with: ../src/configure -v --with-pkgversion='Ubuntu
> 5.5.0-12ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
> --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr
> --program-suffix=-5 --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 --enable-objc-gc --enable-multiarch
> --disable-werror --with-arch-32=i686 --with-abi=m64
> --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
> --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
> --target=x86_64-linux-gnu
>
> Thread model: posix
>
> gcc version 5.5.0 20171010 (Ubuntu 5.5.0-12ubuntu1)
>
>
> Using built-in specs.
>
> COLLECT_GCC=g++
>
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
>
> Target: x86_64-linux-gnu
>
> Configured with: ../src/configure -v --with-pkgversion='Ubuntu
> 5.5.0-12ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
> --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr
> --program-suffix=-5 --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 --enable-objc-gc --enable-multiarch
> --disable-werror --with-arch-32=i686 --with-abi=m64
> --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
> --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
> --target=x86_64-linux-gnu
>
> Thread model: posix
>
> gcc version 5.5.0 20171010 (Ubuntu 5.5.0-12ubuntu1)
>
>
>
>
>
>
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