I reran the make and got a slightly more informative error output:
g++ -fno-strict-aliasing -fvisibility=hidden -fvisibility-inlines-hidden -O3 -ggdb -pthread -Wall -W -Wpointer-arith -pipe -D_GNU_SOURCE -I/home/ecarew/Projects/ACE_wrappers -D__ACE_INLINE__ -I../../.. -Wl,-E -L/home/ecarew/Projects/ACE_wrappers/lib -L. -L../../../lib -Wl,-R/usr/lib -Wl,--enable-new-dtags -o cppout .obj/test.o .obj/cpp.o -lACE -ldl -lrt
.obj/test.o: In function `main':
/home/ecarew/Projects/ACE_wrappers/apps/gperf/tests/test.cpp:28: undefined reference to `in_word_set(char const*, unsigned int)'
/home/ecarew/Projects/ACE_wrappers/apps/gperf/tests/test.cpp:28: undefined reference to `in_word_set(char const*, unsigned int)'
collect2: error: ld returned 1 exit status
make[1]: *** [cppout] Error 1