linux安装redis时报collect2: fatal error: cannot find 'ld'和In file included from adlist.c:34:0:

　　如题，看了下该ld命令所在文件：

[root@centos redis-4.0.]# whereis ld
ld: /usr/bin/ld.gold /usr/bin/ld /usr/bin/ld.bfd /usr/share/man/man1/ld..gz

　　发现ld是一个软连接，而且该软连接一直在闪烁：

[root@centos redis-4.0.]# ll /usr/bin/ld*
lrwxrwxrwx.  root root       Mar    /usr/bin/ld -> /etc/alternatives/ld
-rwxr-xr-x.  root root   Aug     /usr/bin/ld.bfd
-rwxr-xr-x.  root root     Aug    /usr/bin/ldd
-rwxr-xr-x.  root root  Aug     /usr/bin/ld.gold

　　到该软连接目录下，发现软连接失效，已不存在ld：

[root@centos redis-4.0.]# cd /etc/alternatives/
[root@centos alternatives]# ll
total 

　　解决：换个好的环境，发现原来该软连接是指向/usr/bin/ld.bfd

[root@centosalternatives]# ll
total
lrwxrwxrwx  root root  May  : ld -> /usr/bin/ld.bfd

　　回到失败环境/etc/alternatives目录，创建软连接：

[root@centos alternatives]# touch ld
[root@centos alternatives]# ln -s /usr/bin/ld.bfd ld
[root@centos alternatives]# ll /usr/bin/ld*
lrwxrwxrwx.  root root       Mar    /usr/bin/ld -> /etc/alternatives/ld
-rwxr-xr-x.  root root   Aug     /usr/bin/ld.bfd
-rwxr-xr-x.  root root     Aug    /usr/bin/ldd
-rwxr-xr-x.  root root  Aug     /usr/bin/ld.gold

　　现在软连接不闪了，再次编译redis，出来另一个提示：

[root@centos redis-4.0.]# make
cd src && make all
make[]: Entering directory `/root/redis/redis-4.0./src'
    CC Makefile.dep
make[]: Leaving directory `/root/redis/redis-4.0./src'
make[]: Entering directory `/root/redis/redis-4.0./src'
    CC adlist.o
In file included from adlist.c:::
zmalloc.h::: fatal error: jemalloc/jemalloc.h: No such file or directory
 #include <jemalloc/jemalloc.h>
                               ^
compilation terminated.
make[]: *** [adlist.o] Error
make[]: Leaving directory `/root/redis/redis-4.0./src'
make: *** [all] Error 

　　编译命令使用如下语句，改变redis的分配器即可：

[root@centos redis-4.0.]# make MALLOC=libc