c++ - libfastcgipp < 加载共享库时出错

Question

对 c++ 很陌生，虽然用其他语言编写了几年代码。我整天都被这个问题困住了，我似乎无法弄清楚。

当我运行此处发布的代码时:http://www.nongnu.org/fastcgipp/doc/2.1/a00004.html我收到以下错误消息:

error while loading shared libraries: libfastcgipp.so.2: cannot openshared object file: No such file or directory

使用 ubuntu 13.10

我可以毫无问题地构建代码，但无法运行它。 /usr/local/lib/

中有一个 libfastcgipp.so.2和一个 libfastcgipp.so

我尝试从 /usr/lib/libfastcgipp.so 创建符号链接(symbolic link)

---

编辑

ldd 命令的结果...

ldd joppli.bot.dummy 
    linux-vdso.so.1 =>  (0x00007fff497fe000)
    libboost_system.so.1.53.0 => /usr/lib/x86_64-linux-gnu/libboost_system.so.1.53.0 (0x00007f8b1828f000)
    libboost_thread.so.1.53.0 => /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.53.0 (0x00007f8b18079000)
    libfastcgipp.so.2 => not found
    libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f8b17d74000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f8b17b5e000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8b17795000)
    librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f8b1758d000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f8b17370000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8b1706b000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f8b184b6000)

Answer 1

我通过创建一个指向文件的符号链接(symbolic link)解决了这个问题，正如上面首先解释的那样，但在末尾添加了尾随数字 2，即版本号。

例如:ln -s/usr/local/lib/libfastcgipp.so.2.0.0/usr/lib/libfastcgipp.so.2

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更新

再次遇到这个问题，但又无法解决同样的问题，所以我发布了一个 docker 文件，可以让你的 fastCGI++ 脚本运行(可能只有我会用到这个，但无论如何......)

fastcgi++2.1 来源:http://www.nongnu.org/fastcgipp/

FROM ubuntu:14.04

ENV DEBIAN_FRONTEND noninteractive

RUN ln -snf /usr/share/zoneinfo/Europe/Stockholm /etc/localtime \
  && echo "Europe/Stockholm" > /etc/timezone

ENV TERM xterm

RUN echo "deb http://us.archive.ubuntu.com/ubuntu/ trusty multiverse" >> /etc/apt/sources.list
RUN echo "deb-src http://us.archive.ubuntu.com/ubuntu/ trusty multiverse" >> /etc/apt/sources.list
RUN echo "deb http://us.archive.ubuntu.com/ubuntu/ trusty-updates multiverse" >> /etc/apt/sources.list
RUN echo "deb-src http://us.archive.ubuntu.com/ubuntu/ trusty-updates multiverse" >> /etc/apt/sources.list

RUN apt-get -y update && apt-get -y install \
  build-essential \
  libboost-all-dev \
  git \
  apache2 \
  libapache2-mod-fastcgi

COPY dependencies/fastcgi++-2.1.tar.bz2 /tmp/fastcgi++-2.1.tar.bz2

RUN cd /tmp \
  && tar xvf fastcgi++-2.1.tar.bz2 \
  && cd fastcgi++-2.1 \
  && ./configure \
  && make \
  && make install

RUN ln -s /usr/local/lib/libfastcgipp.so.2.0.0 /usr/lib/libfastcgipp.so.2

COPY rep /tmp/app

RUN cd /tmp/app \
  && g++ main.cpp -o example -std=gnu++11 -lfastcgipp -lboost_system -lboost_thread \
  && mv example /var/www/example

COPY config/apache/default.conf /etc/apache2/sites-available/example.conf
COPY config/apache/.htaccess /var/www/.htaccess
RUN mkdir -p /tmp/log/apache/
RUN a2enmod rewrite
RUN a2dissite 000-default
RUN a2ensite example.conf
RUN service apache2 restart

RUN apt-get autoremove -y && apt-get clean all

EXPOSE 80

CMD ["/usr/sbin/apache2ctl", "-D", "FOREGROUND"]

---

config/apache/default.conf

ServerName example

<VirtualHost *:80>
    DocumentRoot /var/www

    <Directory />
        Options FollowSymLinks
        AllowOverride None
    </Directory>

    SetHandler fastcgi-script

    <Directory "/var/www">
        AllowOverride All
        Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
        Order allow,deny
        Allow from all
    </Directory>

    ErrorLog /tmp/log/apache/error.log

    # Possible values include: debug, info, notice, warn, error, crit,
    # alert, emerg.
    LogLevel warn

    CustomLog /tmp/log/apache/access.log combined
</VirtualHost>

---

.htaccess

RewriteEngine On

RewriteRule (.+)/$ /$1 [L,R=301]

RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^.*$ example [NC,L]

DirectoryIndex example