Undefined symbols in 12.4 Beta

Question

Hi Steve,
When compiling js/src/jskwgen.cpp using Firefox 24.5 ESR using -std=c++11, it fails at the linking stage:
Undefined
first referenced
symbol
      in file
std::qsort(void*,unsigned,unsigned,int (*)(const void*,const void))      host_jskwgen.o
The function, std::qsort is defined in libCrun library, but because the use of -std=c++11 means that the libCrun library becomes incompatible and cannot be used.
This problem does not occur if -std=c++11 is omitted.
Currently, are there any workarounds for this issue? Also, are there plans to incorporate the equivalent functions defined in incompatible libraries (e.g. libCrun, etc) to allow successful compilation using -std=c++11 in the final Release of 12.4? Thanks.
Regards,
Brian

Answer 1

Hi Fedor,
Yes. Here are the environment variables for CC and CXX used in my system, extracted from env (I also tried 2 different configurations, and both of them does not seem to pass the required linking flags for appropriate STL (g++ STL, libstdc++):
Configuration 1:
CC=cc
CXX=CC
CFLAGS=-std=c11 -xO4 -Qoption iropt -Rloop_reform
CXXFLAGS=-std=c++11 -xannotate=no +d -mt -xO4 -Qoption iropt -Rloop_reform
Configuration 2:
CC=cc -std=c11 -xO4 -Qoption iropt -Rloop_reform
CXX=CC -std=c++11 -xannotate=no +d -mt -xO4 -Qoption iropt -Rloop_reform
I suppose I might have to pass the required flags to the Solaris ld linker manually (though I am unsure how to, and I don't think this is the case since CC will list the required libraries automatically when -std=c++11 is used).
A check on the g++ STL libstdc++ library through nm command below returned no results (the symbol std::qsort was not found):
nm -DC /opt/SolarisStudio12.4-beta_jul14-solaris-x86/lib/compilers/CC-gcc/lib/libstdc++.so.6.0.18 | grep std::qsort
Regards,
Brian