Mine

<---- Makefile.in ------->

LTLIBRARY_NAME          = libflextrade.la
LTLIBRARY_SOURCES_CPP   = flextrade.cpp
LTLIBRARY_SHARED_NAME   = flextrade.la
LTLIBRARY_OBJECTS_X     = flextrade.lo

include $(top_srcdir)/build/dynlib.mk


</------------------>

<----- config.m4 ---------->

if test "$PHP_FLEXTRADE" != "no" ; then
        PHP_ADD_LIBRARY(stdc++, 1, CPPEXT_SHARED_LIBADD)
        PHP_EXTENSION(flextrade, $ext_shared)
        PHP_REQUIRE_CXX()
  PHP_NEW_EXTENSION(flextrade, flextrade.cpp, $ext_shared)
fi


</--------------------->