 
 
 g++ PDFWriter.cpp -I "C:\Users\bad-p\Downloads\freetype2\include" -include "string" -I "..\Zlib" -I "..\LibJpeg" -I "../LibAesgm"  -w 2>&1 
|sed 's/.*undefined/undefined/g' |grep 'undefined' |cut -d ' ' -f4 |sed 's/::.*$//g' |sort |uniq