[VerneMQ]_在RaspberrPi 3上編譯並安裝VerneMQ

因為Mosquitto不支援多thread以及Clustering的功能,所以接下來可能會棄Mosquitto轉往使用VerneMQ

 

而這東西在pc上很好裝,deb裝一裝就好,不過到了RPI3上,可是要過五關斬六將。

廢話不多說直接進入正題

 

編譯用的版本是latest_version to 0.12.5p4

 

前置作業,你必須先裝好erlang跟libssl-dev

sudo apt-get install erlang libssl-dev

 

接著跟官方過程下的一樣:

git clone git://github.com/erlio/vernemq.git
cd vernemq
make rel

 

注意,不要加上-j,否則有可能會出問題…(問題三的可能來源)

 


 

首先先遭遇到的問題是

/home/pi/vernemq/_build/default/lib/eleveldb/c_src/eleveldb.cc: In function ‘ERL_NIF_TERM parse_open_option(ErlNifEnv*, ERL_NIF_TERM, leveldb::Options&)’:
/home/pi/vernemq/_build/default/lib/eleveldb/c_src/eleveldb.cc:332:58: error: invalid conversion from ‘size_t* {aka unsigned int*}’ to ‘long unsigned int*’ [-fpermissive]
             if (enif_get_ulong(env, option[1], &memory_sz))
                                                          ^
In file included from /home/pi/vernemq/_build/default/lib/eleveldb/c_src/eleveldb.h:27:0,
                 from /home/pi/vernemq/_build/default/lib/eleveldb/c_src/eleveldb.cc:35:
/usr/lib/erlang/erts-6.2/include/erl_nif_api_funcs.h:43:27: note: initializing argument 3 of ‘int enif_get_ulong(ErlNifEnv*, ERL_NIF_TERM, long unsigned int*)’
 ERL_NIF_API_FUNC_DECL(int,enif_get_ulong,(ErlNifEnv*, ERL_NIF_TERM term, unsigned long* ip));
                           ^
/usr/lib/erlang/erts-6.2/include/erl_nif.h:232:71: note: in definition of macro ‘ERL_NIF_API_FUNC_DECL’
 #  define ERL_NIF_API_FUNC_DECL(RET_TYPE, NAME, ARGS) extern RET_TYPE NAME ARGS
                                                                       ^
/home/pi/vernemq/_build/default/lib/eleveldb/c_src/eleveldb.cc: In function ‘ERL_NIF_TERM eleveldb::async_open(ErlNifEnv*, int, const ERL_NIF_TERM*)’:
/home/pi/vernemq/_build/default/lib/eleveldb/c_src/eleveldb.cc:584:24: warning: integer overflow in expression [-Woverflow]
         if (8*1024*1024*1024L < gCurrentTotalMemory)
                        ^
Makefile:65: recipe for target '/home/pi/vernemq/_build/default/lib/eleveldb/c_src/eleveldb.o' failed
make[1]: *** [/home/pi/vernemq/_build/default/lib/eleveldb/c_src/eleveldb.o] Error 1
make[1]: Leaving directory '/home/pi/vernemq/_build/default/lib/eleveldb/c_src'
===> Hook for compile failed!

Makefile:56: recipe for target 'rel' failed
make: *** [rel] Error 1

 

是因為ARM/Scaleway架構上兩處變數無法將int轉型成long unsigned int

因此需手動直接修改兩處宣告變數的地方

sudo vim ./_build/default/lib/eleveldb/c_src/eleveldb.cc

修改第243行,size_t memory_sz;變成unsigned long memory_sz;

修改第331行,size_t memory_sz;變成unsigned long memory_sz;

解法參考:https://github.com/bougueil/eleveldb/commit/bca0888ae8767f3759a2b002fc244b1a1f534c82https://github.com/erlio/vernemq/issues/25

 

 


 

第二個問題基本上如果你前面有裝libssl-dev,則你不會碰到

===> Compiling vmq_acl
===> Compiling eper
===> Compiling vmq_passwd
make[1]: Entering directory '/home/pi/vernemq/_build/default/lib/vmq_passwd/c_src'
gcc  vmq_passwd.c -lcrypto -o vmq_passwd
vmq_passwd.c:32:25: fatal error: openssl/evp.h: No such file or directory
 #include <openssl/evp.h>
                         ^
compilation terminated.
Makefile:3: recipe for target 'compile' failed
make[1]: *** [compile] Error 1
make[1]: Leaving directory '/home/pi/vernemq/_build/default/lib/vmq_passwd/c_src'
===> Hook for compile failed!

Makefile:56: recipe for target 'rel' failed
make: *** [rel] Error 1

 

解法就是裝好libssl-dev吧!

解法參考:http://stackoverflow.com/questions/3016956/how-do-i-install-the-openssl-c-library-on-ubuntu

 


 

第三個問題更奇怪了

/home/pi/vernemq/rebar3 release --overlay_vars vars.config
===> Verifying dependencies...
===> Compiling vmq_graphite
===> Compiling vmq_systree
===> Compiling vmq_bridge
===> Compiling recon
===> Compiling vmq_snmp
===> Running cuttlefish schema generator
===> Starting relx build process ...
===> Resolving OTP Applications from directories:
          /home/pi/vernemq/_build/default/lib
          /usr/lib/erlang/lib
===> Resolved vernemq-0.12.5p4
===> Including Erts from /usr/lib/erlang
===> release successfully created!
===> Unable to copy from /home/pi/vernemq/_build/default/lib/vmq_passwd/c_src/vmq_passwd to /home/pi/vernemq/_build/default/rel/vernemq/bin/vmq-passwd because of {copy_failed,
                                                                                                                                                              enoent}

Makefile:56: recipe for target 'rel' failed
make: *** [rel] Error 127

 

解法就是刪除vernemq/_build/default/lib/vmq_passwd/c_src/vmq_passwd整個資料夾,並且重新make rel

解法參考:https://github.com/erlio/vernemq/issues/122


 

若還是碰到…

pi@raspberrypi:~/vernemq $ sudo make rel
/home/pi/vernemq/rebar3 release --overlay_vars vars.config
===> Verifying dependencies...
===> Fetching vmq_passwd ({git,
                                  "git://github.com/erlio/vmq_passwd.git",
                                  {ref,
                                   "a2a2ea7786e8bc9e2bfb1fbe516b0d54c6b060d8"}})
===> Failed to fetch and copy dep: {git,"git://github.com/erlio/vmq_passwd.git",
                                  {ref,
                                      "a2a2ea7786e8bc9e2bfb1fbe516b0d54c6b060d8"}}
Makefile:56: recipe for target 'rel' failed
make: *** [rel] Error 1
pi@raspberrypi:~/vernemq $ sudo make rel

 

檢查網路ok後,重新下一次make rel即可!

 


2016/08/07 補充

若你要PORT的版本是0.13以上,可能會遭遇ARM架構上因為沒有CPUID.H而編譯失敗的問題,這個問題我有發ISSUE,得到官方回覆的快速骯髒解XD

因為ARM本來就沒在支援清單上,但官方還是簡單的說明如何拿掉CPU最佳化的CODE,測試後一般功能大致上沒什麼問題

 

英文好的可以直接參考:https://github.com/erlio/vernemq/issues/175

 

簡單來說就是在遭遇錯誤時,在vernemq資料夾底下建立一個 _checkouts 資料夾,並把 _build/default/lib/mzmetrics 移動到該_checkouts資料夾內

並修改 _checkouts/mzmetrics/c_src/mzmetrics_counters_no_preallocation.c

 

將第三行的 #include <cpuid.h> 移除或者註解

接著第三十三行的mycpu function內前置處理器部分修改成下列樣子

int mycpu(void)
{
#ifdef PCPU_COUNTERS
#ifdef __linux__
    return sched_getcpu();
#else
    unsigned int eax, ebx, ecx, edx;
    if (!__get_cpuid(1, &eax, &ebx, &ecx, &edx))
        return 0;
    return 0;
#endif
#else
    return 0;
#endif
}

 

儲存後再make rel試試看~

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