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Mysterious linker error "undefined reference to `__gxx_personality_v0'" using clang in cygwin

I did some search, all answers seem to suggest that using clang++ instead of clang (or rather g++ in place of gcc), which is what I did in the first place. Still, the problem persists, with either

clang++ -Wall -std=c++11 -o test.exe test.cpp A.cpp B.cpp etc.cpp

or

clang++ -lstdc++ -Wall -std=c++11 -o test.exe test.cpp A.cpp B.cpp etc.cpp

The compilation and linking works fine with g++ in Cygwin.

g++ -Wall -std=c++11 -o test.exe test.cpp A.cpp B.cpp etc.cpp

Update:

Here is the information during linking. Is clang trying to use gcc for linking, rather than g++? In that case, why didn't flag -lstdc++ and the -lsupc++ as suggested below, work?

COMPILER_PATH=/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/:/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/:/usr/lib/gcc/x86_64-pc-cygwin/:/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/:/usr/lib/gcc/x86_64-pc-cygwin/:/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../../x86_64-pc-cygwin/bin/
LIBRARY_PATH=/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/:/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../../x86_64-pc-cygwin/lib/../lib/:/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../../lib/:/lib/../lib/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../../x86_64-pc-cygwin/lib/:/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-std=c++11' '-m64' '-o' 'testReSampling.exe' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
 /usr/lib/gcc/x86_64-pc-cygwin/4.8.3/collect2.exe --build-id -m i386pep --wrap _Znwm --wrap _Znam --wrap _ZdlPv --wrap _ZdaPv --wrap _ZnwmRKSt9nothrow_t --wrap _ZnamRKSt9nothrow_t --wrap _ZdlPvRKSt9nothrow_t --wrap _ZdaPvRKSt9nothrow_t -Bdynamic --dll-search-prefix=cyg --tsaware -o testReSampling.exe /usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../../lib/crt0.o /usr/lib/gcc/x86_64-pc-cygwin/4.8.3/crtbegin.o -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.3 -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../../x86_64-pc-cygwin/lib/../lib -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../../lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../../x86_64-pc-cygwin/lib -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../.. -lsupc++ /tmp/misc-8020e8.o /tmp/DataStruct-b10944.o /tmp/HyperGeometricPVal-edef1c.o /tmp/Array2EG-3441bb.o /tmp/GOCats-ff22c1.o /tmp/UGraph-10cfd8.o /tmp/testReSampling-9fb18c.o -lstdc++ -lgcc_s -lgcc -lcygwin -ladvapi32 -lshell32 -luser32 -lkernel32 -lgcc_s -lgcc /usr/lib/gcc/x86_64-pc-cygwin/4.8.3/../../../../lib/default-manifest.o /usr/lib/gcc/x86_64-pc-cygwin/4.8.3/crtend.o
/tmp/misc-8020e8.o:fake:(.eh_frame+0x47): undefined reference to `__gxx_personality_v0'
/tmp/misc-8020e8.o:fake:(.eh_frame$_ZNSt6vectorISsSaISsEE5clearEv+0x13): undefined reference to `__gxx_personality_v0'
/tmp/misc-8020e8.o:fake:(.eh_frame$_ZNSt6vectorISt4pairIjS0_ItdEESaIS2_EE5beginEv+0x13): undefined reference to `__gxx_personality_v0'
/tmp/misc-8020e8.o:fake:(.eh_frame$_ZNSt6vectorISt4pairIjS0_ItdEESaIS2_EE3endEv+0x13): undefined reference to `__gxx_personality_v0'
/tmp/misc-8020e8.o:fake:(.eh_frame$_ZNSt6vectorISt4pairIjS0_ItSt5arrayIdLm2EEEESaIS4_EE5beginEv+0x13): undefined reference to `__gxx_personality_v0'
/tmp/misc-8020e8.o:fake:(.eh_frame$_ZNSt6vectorISt4pairIjS0_ItSt5arrayIdLm2EEEESaIS4_EE3endEv+0x13): more undefined references to `__gxx_personality_v0' follow
collect2: error: ld returned 1 exit status
clang: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
like image 978
CloudyTrees Avatar asked Nov 23 '14 00:11

CloudyTrees


2 Answers

Found this solution:

https://cygwin.com/ml/cygwin/2015-06/msg00294.html

Basically just add -fno-exceptions on the command line when you compile for example clang++ helloworld.cpp -std=c++11 -fno-exceptions

like image 155
user18490 Avatar answered Sep 30 '22 13:09

user18490


OK, as I was further wandering around the web, I found a relevant post, see nos's answer.

So I realized I was compiling with Cygwin64 terminal, while Cygwin's clang port is a 32 version. After switching to the Cygwin32 terminal, everything works fine.

like image 38
CloudyTrees Avatar answered Sep 30 '22 14:09

CloudyTrees