Phoenix运行Kmeans

g++ -lpthread -g -Wall -O3 -D_LINUX_ -DMMAP_POPULATE -fstrict-aliasing-Wstrict-aliasing -D__x86_64__ -c kmeans.cpp -o kmeans.o-I../../include

g++ -lpthread -g -Wall -O3 -D_LINUX_ -DMMAP_POPULATE -fstrict-aliasing-Wstrict-aliasing -D__x86_64__ -o kmeans kmeans.o -lpthread -lrt-L../../lib -lphoenix

../../lib/libphoenix.a(thread_pool.o):In function `semaphore::wait()':

/home/xiuwenyi/phoenix++-1.0/src/../include/synch.h:177:undefined reference to `sem_wait'

../../lib/libphoenix.a(thread_pool.o):In function `semaphore::post()':

/home/xiuwenyi/phoenix++-1.0/src/../include/synch.h:168:undefined reference to `sem_post'

/home/xiuwenyi/phoenix++-1.0/src/../include/synch.h:168:undefined reference to `sem_post'

../../lib/libphoenix.a(thread_pool.o):In function `semaphore':

/home/xiuwenyi/phoenix++-1.0/src/../include/synch.h:159:undefined reference to `sem_init'

/home/xiuwenyi/phoenix++-1.0/src/../include/synch.h:159:undefined reference to `sem_init'

../../lib/libphoenix.a(thread_pool.o):In function `thread_pool':

/home/xiuwenyi/phoenix++-1.0/src/thread_pool.cpp:61:undefined reference to `pthread_create'

/home/xiuwenyi/phoenix++-1.0/src/thread_pool.cpp:61:undefined reference to `pthread_create'

../../lib/libphoenix.a(thread_pool.o):In function `semaphore::post()':

/home/xiuwenyi/phoenix++-1.0/src/../include/synch.h:168:undefined reference to `sem_post'

../../lib/libphoenix.a(thread_pool.o):In function `semaphore::wait()':

/home/xiuwenyi/phoenix++-1.0/src/../include/synch.h:177:undefined reference to `sem_wait'

../../lib/libphoenix.a(thread_pool.o):In function `semaphore::post()':

/home/xiuwenyi/phoenix++-1.0/src/../include/synch.h:168:undefined reference to `sem_post'

../../lib/libphoenix.a(thread_pool.o):In function `semaphore::wait()':

/home/xiuwenyi/phoenix++-1.0/src/../include/synch.h:177:undefined reference to `sem_wait'

collect2:ld返回1

make:*** [kmeans]错误1

若有以上这个错误，进入kmeans目录，修改Makefile，将-pthread加进去，如下

kmeans: $(KMEANS_OBJS) $(LIB_DEP)$(CXX)  -pthread $(CFLAGS)  -o $@ $(KMEANS_OBJS) $(LIBS)%.o: %.cpp$(CXX)  -pthread $(CFLAGS) -c $< -o $@ -I$(HOME)/$(INC_DIR)

在终端里进入phoenix文件夹，make