The compiler by default creates an ELF section per variable and function, for compilation units where the number of sections is reached the compiler can concatenate objects into single sections. The 'pool sections' checkbox from the code generation settings panel controls this behavior, the command line equivalent is -pool[_section]
The Embedded Warrior Libraries provides the libraries described in the ISO/IEC standards for C and C++. EWL also provides some extensions to the standard libraries.