relocation R X86 64 32S against linking Error

Question

I m Trying to Link a static Library to a shared library   I m Getting the Following error   usr bin ld           libraries log4cplus liblog4cplus a fileappender o   relocation R X86 64 32S against  a local symbol  can not be used when making a shared object  recompile with -fPIC          libraries log4cplus liblog4cplus a  could not read symbols  Bad value collect2  ld returned 1 exit status  But this worked on a 32bit machine without any such error  I tried adding The -fPIC flags manually to the Makefile that too didn t solve the problem I tried the -whole-archive flag as suggested here but with no success     usr bin ld           libraries log4cplus liblog4cplus a appenderattachableimpl o   relocation R X86 64 32S against  vtable for log4cplus  spi  AppenderAttachable  can not be used when making a shared object  recompile with -fPIC          libraries log4cplus liblog4cplus a appenderattachableimpl o   could not read symbols  Bad value collect2  ld returned 1 exit status  Creation of liblog4cplus a   unzip log4cplus-1 1 0 zip   configure --enable-static yes --enable-threads yes vi Makefile and added -fPIC to CXXFLAGS and CFLAGS make  Then for Compiling my shared library   g   -frtti -w  -c -fPIC -I quot Include Directory quot  myfile cpp g   -shared -fPIC -frtti -I quot Include Directory quot  -o mysofile so myfile o -Wl --whole-archive  quot          libraries log4cplus liblog4cplus a quot  -Wl --no-whole-archive -ldl

User · Answer

I also had similar problems when trying to link static compiled fontconfig and expat into a linux shared object:

/opt/rh/devtoolset-7/root/usr/libexec/gcc/x86_64-redhat-linux/7/ld: /3rdparty/fontconfig/lib/linux-x86_64/libfontconfig.a(fccfg.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
/opt/rh/devtoolset-7/root/usr/libexec/gcc/x86_64-redhat-linux/7/ld: /3rdparty/expat/lib/linux-x86_64/libexpat.a(xmlparse.o): relocation R_X86_64_PC32 against symbol `stderr@@GLIBC_2.2.5' can not be used when making a shared object; recompile with -fPIC
[...]

This contrary to the fact that I was already passing -fPIC flags though CFLAGS variable, and other compilers/linkers variants (clang/lld) were perfectly working with the same build configuration. It ended up that these dependencies control position-independent code settings through despicable autoconf scripts and need --with-pic switch during build configuration on linux gcc/ld combination, and its lack probably overrides same the setting in CFLAGS. Pass the switch to configure script and the dependencies will be correctly compiled with -fPIC.

User · Answer

Assuming you are generating a shared library  most probably what happens is that the variant of liblog4cplus a you are using wasn t compiled with -fPIC  In linux  you can confirm this by extracting the object files from the static library and checking their relocations   ar -x liblog4cplus a   readelf --relocs fileappender o   egrep   GOT PLT JU MP SLOT     If the output is empty  then the static library is not position-independent and cannot be used to generate a shared object   Since the static library contains object code which was already compiled  providing the -fPIC flag won t help    You need to get ahold of a version of liblog4cplus a compiled with -fPIC and use that one instead

User · Answer

Relocation R X86 64 PC32 against undefined symbol   usually happens when LDFLAGS are set with hardening and CFLAGS not   Maybe just user error  If you are using -specs  usr lib rpm redhat redhat-hardened-ld at link time   you also need to use -specs  usr lib rpm redhat redhat-hardened-cc1 at compile time  and as you are compiling and linking at the same time  you need either both  or drop the -specs  usr lib rpm redhat redhat-hardened-ld   Common fixes   https   bugzilla redhat com show bug cgi id 1304277 c3 https   github com rpmfusion lxdream blob master lxdream-0 9 1-implicit patch

User · Answer

I ve got a similar error when installing FCL that needs CCD lib libccd  like this       usr bin ld   usr local lib libccd a ccd o   relocation R X86 64 32S against  a local symbol  can not be used when making a shared object  recompile with -fPIC   I find that there is two different files named  libccd a       usr local lib libccd a  usr local lib x86 64-linux-gnu libccd a   I solved the problem by removing the first file

User · Answer

Add -fPIC at the end of CMAKE CXX FLAGS and CMAKE C FLAG  Example   set  CMAKE CXX FLAGS     CMAKE CXX FLAGS  -Wall --std c  11 -O3 -fPIC    set  CMAKE C FLAGS     CMAKE C FLAGS  -Wall -O3 -fPIC      This solved my issue

[c++] "relocation R_X86_64_32S against " linking Error

Examples related to c++

Examples related to linux

Examples related to shared-libraries

Examples related to static-libraries