i686-pc-linux-gnu-ranlib .libs/libpcrecpp.a
creating libpcrecpp.la
(cd .libs && rm -f libpcrecpp.la && ln -s ../libpcrecpp.la libpcrecpp.la)
/bin/sh ./libtool --mode=link i686-pc-linux-gnu-g++  -I. -I.   -o pcrecpp_unittest  pcrecpp_unittest.o \
        libpcrecpp.la libpcreposix.la
pcretest.o: In function `pchars':
./pcretest.c:177: undefined reference to `_pcre_utf8_table1_size'
./pcretest.c:165: undefined reference to `_pcre_utf8_table3'
./pcretest.c:178: undefined reference to `_pcre_utf8_table1'
collect2: ld returned 1 exit status
make: *** [pcretest] Error 1
make: *** Waiting for unfinished jobs....
i686-pc-linux-gnu-g++ -I. -I. -o .libs/pcrecpp_unittest pcrecpp_unittest.o  ./.libs/libpcrecpp.so -L/var/tmp/portage/libpcre-6.3/work/pcre-6.3 -L/var/tmp/portage/libpcre-6.3/work/pcre-6.3/.libs ./.libs/libpcreposix.so /var/tmp/portage/libpcre-6.3/work/pcre-6.3/.libs/libpcre.so
creating pcrecpp_unittest

!!! ERROR: dev-libs/libpcre-6.3 failed.
Call stack:
  ebuild.sh, line 1546:   Called dyn_compile
  ebuild.sh, line 937:   Called src_compile
  libpcre-6.3.ebuild, line 38:   Called die

!!! (no error message)
!!! If you need support, post the topmost build error, and the call stack if relevant.