What do you mean by this exactly? -- can you say what changes you made
to 'add' these libs? It shouldn't be necessary to touch the .libs dir
after running 'make install'.
Try running 'make check' to see if that works. If so, you can look at
how the pcrecpp_unittest binary was compiled on mingw, and try doing
the same thing for your application. You should not need to change
pcre_stringpiece.h or pcrecpparg.h to remove the PCRECPP_EXP_DFNs.