memcached+magent组成高可用
# makegcc-Wall -g -O2 -I/usr/local/include -m64 -c -o magent.o magent.c
magent.c:71:19:error: event.h: No such file or directory
magent.c:130: error: field ‘ev’ has incomplete type
magent.c:161: error: field ‘ev’ has incomplete type
magent.c: In function ‘server_free’:
magent.c:494:warning: implicit declaration of function ‘event_del’
magent.c:In function ‘pool_server_handler’:
magent.c:514: error: ‘EV_READ’ undeclared (first use in this function)
magent.c:514:error: (Each undeclared>
# 解决办法，检查下libevent安装路径，如果自定义安装了，拷贝下路径库。
ln -s /usr/lib/libevent*/usr/lib64/
# make
gcc-Wall -g -O2 -I/usr/local/include -m64 -c -o magent.o magent.c
magent.c: In function ‘writev_list’:
magent.c:729: error: ‘SSIZE_MAX’ undeclared (first use in this function)
magent.c:729:error: (Each undeclared>magent.c:729:error: for each function it appears in.)
make:*** Error 1
解决方法：
vi ./ketama.h
#在开头加入
#ifndef SSIZE_MAX
#define SSIZE_MAX 32767
#endif
#libm.a不存在的时候，需要拷贝下面so，如果没有，需要安装glibc glibc-devel
cp/usr/lib64/libm.so /usr/lib64/libm.a
gcc-Wall -g -O2 -I/usr/local/include -m64 -o magent magent.o ketama.o/usr/lib64/libevent.a /usr/lib64/libm.a
/usr/lib64/libevent.a(event.o):In function `gettime':
/root/libevent-2.0.21-stable/event.c:370:undefined reference to `clock_gettime'
/usr/lib64/libevent.a(event.o):In function `detect_monotonic':
/root/libevent-2.0.21-stable/event.c:340:undefined reference to `clock_gettime'
collect2:ld returned 1 exit status
make:*** Error 1
解决方法：
viMakefile
CFLAGS= -Wall -g -O2 -I/usr/local/include $(M64)
改为：
CFLAGS= -lrt -Wall -g -O2 -I/usr/local/include $(M64)
# make
gcc-lrt -Wall -g -O2 -I/usr/local/include -o magent magent.o ketama.o -levent
ketama.o:In function `create_ketama':
/root/magent5/ketama.c:399:undefined reference to `floorf'
collect2:ld returned 1 exit status
make:*** Error 1
解决办法：
viMakefile
LIBS =-levent –lm
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