如何正确安装SOCI

How do you properly install SOCI?

本文关键字：SOCI 安装 何正确      更新时间：2023-10-16

我正面临一个困扰了我一段时间的编程问题。我打算开始一个个人项目，我需要使用数据库来存储某些信息，我决定使用SQLite，但是我不喜欢C-ish API，所以我在SQLite wiki中遇到了SOCI包装器。

我去了SOCI官方网站，阅读了文档，决定试一试。我按照文档中"安装"一章的说明进行操作，在安装了所有要求之后，我编译并安装了它:

cmake -DWITH_BOOST=ON -DSOCI_TESTS=ON -DWITH_SQLITE3=ON
make
make test
sudo make install

所有测试都成功完成，但是当尝试运行(在使用g++ test.cpp -o1 -lsoci_core -lsoci_sqlite3编译后)一个程序时，例如:

test.cpp: 

#include "soci/soci.h"
#include "soci/sqlite3/soci-sqlite3.h"
#include <iostream>
int main()
{
    soci::session sql(soci::sqlite3, "testdb.db");
    return 0;    
}

我得到一个错误说:"错误，而加载共享库:libsoci_sqlite3.so.3.1:不能打开共享对象文件:没有这样的文件或目录。"但看看安装日志，我可以清楚地看到，共享库已安装。

我想我已经找到问题了。做一个:

strace -e open ./1 2>&1 | grep soci

输出如下内容:

open("/usr/local/lib/libsoci_core.so.3.1", O_RDONLY) = 3
open("/lib/x86_64-linux-gnu/tls/x86_64/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/tls/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/x86_64/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/tls/x86_64/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/tls/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/x86_64/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/tls/x86_64/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/tls/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/x86_64/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/x86_64/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/libsoci_sqlite3.so.3.1", O_RDONLY) = -1 ENOENT (No such file or directory)
./1: error while loading shared libraries: libsoci_sqlite3.so.3.1: cannot open shared object file: No such file or directory

通过查看它，您可以清楚地看到它只在soci_core中搜索/usr/local/lib/，而通常它也应该搜索soci_sqlite3。一个快速和肮脏的hack，解决这个问题是创建一个smylink到libsoci_sqlite3.so.3.1在任何其他文件夹中列出，但我很确定，有一个更好的方法来修复它。

在您的SOCI安装库位于/usr/local/lib64/

下面的语句应该可以工作:

g++ test.cpp -o test -I/usr/local/include/soci -L/usr/local/lib64/-lsoci_core -lsoci_sqlite3
- wl,当地的rpath =/usr/lib64/

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