cross compile 하는 중에 소스가 semaphore.h를 인식하지 못하는 것 같아요...

#
# Warning: you may need more libraries than are included here on the
# build line.  The agent frequently needs various libraries in order
# to compile pieces of it, but is OS dependent and we can't list all
# the combinations here.  Instead, look at the libraries that were
# used when linking the snmpd master agent and copy those to this
# file.
#
PROJDIR = /home/proj/msap/apps/sychoi
INSTDIR = $(PROJDIR)/rootfs/usr/sbin
SNMPINC = /home/proj/msap/apps/sychoi/install/usr
CC=ppc_82xx-gcc
STRIP=ppc_82xx-strip
 
OBJS += agentx.o
OBJS += fan.o
OBJS += exam.o
 
TARGETS = agentx
 
CFLAGS += -O2 -Dlinux -I. -I$(SNMPINC)/include
BUILDLIBS = -L$(SNMPINC)/lib -lnetsnmp -lcrypto -lm
BUILDAGENTLIBS = -L$(SNMPINC)/lib -lnetsnmpmibs -lnetsnmpagent -lnetsnmphelpers -lnetsnmp -ldl -lcrypto -lm
 
 
# shared library flags (assumes gcc)
DLFLAGS=-fPIC -shared -lpthread
 
all: $(TARGETS)
 
agentx: $(OBJS)
        $(CC) -o agentx $(OBJS) $(BUILDLIBS) $(BUILDAGENTLIBS)
        $(STRIP) agentx
 
install:
        cp -a agentx $(INSTDIR)
 
clean:
        rm -f $(OBJS) $(TARGETS)

[root@localhost nextest]# make agentx
ppc_82xx-gcc -O2 -Dlinux -I. -I/home/proj/msap/apps/sychoi/install/usr/include   -c -o agentx.o agentx.c
ppc_82xx-gcc -O2 -Dlinux -I. -I/home/proj/msap/apps/sychoi/install/usr/include   -c -o fan.o fan.c
ppc_82xx-gcc -O2 -Dlinux -I. -I/home/proj/msap/apps/sychoi/install/usr/include   -c -o exam.o exam.c
ppc_82xx-gcc -o agentx agentx.o fan.o exam.o -L/home/proj/msap/apps/sychoi/install/usr/lib -lnetsnmp -lcrypto -lm  -L/home/proj/msap/apps/sychoi/install/usr/lib -lnetsnmpmibs -lnetsnmpagent -lnetsnmphelpers -lnetsnmp -ldl -lcrypto -lm
exam.o: In function `init_exam':
exam.c:(.text+0x27c): undefined reference to `sem_init'
exam.o: In function `examNEXTable_get_next_data_point':
exam.c:(.text+0x370): undefined reference to `sem_wait'
exam.c:(.text+0x3f8): undefined reference to `sem_post'
exam.c:(.text+0x4cc): undefined reference to `sem_post'

#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "exam.h"
//#include "/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h"
 
#include <semaphore.h>
 
 
sem_t exam_sem;
 
 
....................................................................................
 
........
 
 
netsnmp_variable_list *
examNEXTable_get_next_data_point(void **my_loop_context,
                                 void **my_data_context,
                                 netsnmp_variable_list * put_index_data,
                                 netsnmp_iterator_info *mydata)
{
    struct examNEXTable_entry *entry = (struct examNEXTable_entry *) *my_loop_context;
    netsnmp_variable_list *idx = put_index_data;
    printf("entry :%d  put_index_data: %d\n", entry, put_index_data);
 
    struct examNEXTable_entry *ptr, *prev;
    int find =0;
 
    sem_wait(&exam_sem);
    printf("sema_wait end!!\n");
 
    for(prev =NULL, ptr=examNEXTable_head; ptr!=NULL; prev=ptr, ptr=ptr->next){
 
        if(entry==ptr)
         find =1;
         printf("find : %d  ptr : %d  entry: %d\n", find, ptr, entry);
      }
 
 
    if (entry && find) {
        snmp_set_var_value(idx, (u_char *)entry->name, strlen(entry->name));
        printf("entry->name : %s   len : %d  \n", (u_char *)entry->name, strlen(entry->name));
 
        idx = idx->next_variable;
        printf("idx : %d  idx->nex_variable : %d \n", idx, idx->next_variable);
        *my_data_context = (void *) entry;
        printf("my_data_context : %d \n", *my_data_context);
        *my_loop_context = (void *) entry->next;
        printf("my_loop_context: %d \n", *my_loop_context);
        sem_post(&exam_sem);
        printf("put_index_data : %d\n", put_index_data);
        return put_index_data;
 
    } else {
 
         sem_post(&exam_sem);
         printf("else!!\n");
         return NULL;
    }
}

[root@localhost nextest]# make agentx
ppc_82xx-gcc -O2 -Dlinux -I. -I/home/proj/msap/apps/sychoi/install/usr/include   -c -o agentx.o agentx.c
ppc_82xx-gcc -O2 -Dlinux -I. -I/home/proj/msap/apps/sychoi/install/usr/include   -c -o fan.o fan.c
ppc_82xx-gcc -O2 -Dlinux -I. -I/home/proj/msap/apps/sychoi/install/usr/include   -c -o exam.o exam.c
In file included from exam.c:10:
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:30:28: error: bits/semaphore.h: No such file or directory
In file included from exam.c:10:
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:37: error: parse error before '*' token
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:40: error: parse error before '*' token
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:43: error: parse error before '*' token
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:43: warning: data definition has no type or storage class
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:46: error: parse error before '*' token
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:55: error: parse error before '*' token
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:67: error: parse error before '*' token
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:70: error: parse error before '*' token
/opt/eldk-4.1/ppc_8xx/usr/include/semaphore.h:73: error: parse error before '*' token
exam.c:14: error: parse error before 'exam_sem'
exam.c:14: warning: data definition has no type or storage class
make: *** [exam.o] 오류 1