can't build simple app / linking error

[valexey]

Dummy program:
===
void webMain() [[client]]
{
}
===

Cause this error: ERROR: Linking globals named '_ZTVSt9bad_alloc': symbol multiply defined!

More details:

 /opt/cheerp/bin/clang++ -O3 -target cheerp main.cpp -o main.bc -v
clang version 3.7.0 (https://github.com/leaningtech/cheerp-clang 77eca1ea55c8e2bba8732131697734cc4de60283) (https://github.com/leaningtech/cheerp-llvm 77fab8d5331f12b814f0aaf09d4e17f933f60401)
Target: cheerp--webbrowser
Thread model: posix
 "/opt/cheerp/bin/clang-3.7" -cc1 -triple cheerp--webbrowser -emit-llvm-bc -disable-free -disable-llvm-verifier -main-file-name main.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -no-integrated-as -mconstructor-aliases -v -dwarf-column-info -resource-dir /opt/cheerp/bin/../lib/clang/3.7.0 -c-isystem /home/valexey/Projects/cheerp/cheerp-libcxx/cheerp-libcxxabi/include -cxx-isystem /home/valexey/Projects/cheerp/cheerp-libcxx/include -internal-isystem /opt/cheerp/include/c++/v1 -internal-isystem /opt/cheerp/bin/../lib/clang/3.7.0/include -internal-externc-isystem /opt/cheerp/include -internal-externc-isystem /opt/cheerp/include/client -O3 -fdeprecated-macro -fno-dwarf-directory-asm -fdebug-compilation-dir /home/valexey/Projects/formula/c++ -ferror-limit 19 -fmessage-length 211 -mstackrealign -fno-rtti -fno-threadsafe-statics -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o /tmp/main-2b8fed.bc -x c++ main.cpp
clang -cc1 version 3.7.0 based upon LLVM 3.7.0svn default target x86_64-unknown-linux-gnu
#include "..." search starts here:
#include <...> search starts here:
 /home/valexey/Projects/cheerp/cheerp-libcxx/include
 /opt/cheerp/include/c++/v1
 /opt/cheerp/bin/../lib/clang/3.7.0/include
 /opt/cheerp/include
 /opt/cheerp/include/client
 /opt/cheerp/include/common
End of search list.
 "/opt/cheerp/bin/llvm-link" -o /tmp/main-f3743b.bc /tmp/main-2b8fed.bc /opt/cheerp/lib/libc.bc /opt/cheerp/lib/libm.bc /opt/cheerp/lib/libc++.bc /opt/cheerp/lib/libc++abi.bc
ERROR: Linking globals named '_ZTVSt9bad_alloc': symbol multiply defined!
clang-3.7: error: linker command failed with exit code 1 (use -v to see invocation)

[Sander van Veen (sandervv+launchpad)]

The test case provided compiles successfully for me. I think that the failure is caused by an incorrectly built standard library.

I've attached a build script that I use internally to rebuild all standard libraries. Note that this script does not install the binaries and libraries to the path /opt/cheerp though. Can you check if your build commands are similar to that script?

My first guess would be to check if -DCMAKE_CXX_FLAGS="${CXXFLAGS} -nostdlib" is used for libcxx and -DCMAKE_CXX_FLAGS="${CXXFLAGS} -nostdlib -frtti" for libcxxabi.