C++ 制作 gcc4.8.1 时无法打开 libmpc.so.3

Cannot open libmpc.so.3 while making gcc4.8.1

提问by bucherren

I want to install gcc4.8.1 on ubuntu 10.04.

我想在 ubuntu 10.04 上安装 gcc4.8.1。

Here are my installing steps:

下面是我的安装步骤：

1. Install libgmp, libmpfr and libmpc.

2. After switch to gcc4.8.1 source code dir, run "./configure --prefix=/usr/bin/gcc4.8.1 --with-gmp=/opt/pkg/gmp5.1.2 --with-mpfr=/opt/pkg/mpfr3.1.2 --with-mpc=/opt/pkg/mpc1.0.1"

3. make

4. export LD_LIBRARY_PATH=/opt/pkg/gmp5.1.2/lib:/opt/pkg/mpfr3.1.2/lib:/opt/pkg/mpc1.0.1/lib

5. sudo make install.

1. 安装 libgmp、libmpfr 和 libmpc。

2. 切换到gcc4.8.1源码目录后，运行“./configure --prefix=/usr/bin/gcc4.8.1 --with-gmp=/opt/pkg/gmp5.1.2 --with-mpfr=/opt/ pkg/mpfr3.1.2 --with-mpc=/opt/pkg/mpc1.0.1"

3. 制作

4. 导出 LD_LIBRARY_PATH=/opt/pkg/gmp5.1.2/lib:/opt/pkg/mpfr3.1.2/lib:/opt/pkg/mpc1.0.1/lib

5. 须藤制作安装。

In the last step I get this error:

在最后一步中，我收到此错误：

/usr/local/sbin/gcc-4.8.1/host-i686-pc-linux-gnu/gcc/cc1: error while loading shared   libraries: libmpc.so.3: cannot open shared object file: No such file or directory
make[5]: *** [install-exec-hook] Error 1
make[5]: Leaving directory `/usr/local/sbin/gcc-4.8.1/i686-pc-linux-gnu/libjava'
make[4]: *** [install-exec-am] Error 2
make[4]: Leaving directory `/usr/local/sbin/gcc-4.8.1/i686-pc-linux-gnu/libjava'
make[3]: *** [install-am] Error 2
make[3]: Leaving directory `/usr/local/sbin/gcc-4.8.1/i686-pc-linux-gnu/libjava'
make[2]: *** [install-recursive] Error 1
make[2]: Leaving directory `/usr/local/sbin/gcc-4.8.1/i686-pc-linux-gnu/libjava'
make[1]: *** [install-target-libjava] Error 2
make[1]: Leaving directory `/usr/local/sbin/gcc-4.8.1'
make: *** [install] Error 2

I have switched to the libmpc library path and tested libmpc.so.3 with ldd. It has been installed successfully. Why does it say it cannot open shared object libmpc.so.3? How can I fix it?

我已经切换到 libmpc 库路径并使用 ldd 测试了 libmpc.so.3。它已成功安装。为什么说它不能打开共享对象libmpc.so.3？我该如何解决？

采纳答案by KiaMorot

You have to check if the libmpc.so.3 is a successfully created symbolic link to libmpc.so.3.0.0. This error may arise because you have installed this library manually and the sym. link may be missing. You could try this:

您必须检查 libmpc.so.3 是否是成功创建的指向 libmpc.so.3.0.0 的符号链接。出现此错误可能是因为您手动安装了此库和 sym。链接可能丢失。你可以试试这个：

sudo ln -s /opt/pkg/mpc1.0.1/lib/libmpc.so.3.0.0 /opt/pkg/mpc1.0.1/lib/libmpc.so.3

Syntax of lnis ln -s <real path to file> <symbolic link name>. For more check out the man page of ln.

lnis 的语法ln -s <real path to file> <symbolic link name>。有关更多信息，请查看ln.

回答by bucherren

According to your suggest, I have installed gcc4.8.1 successfully. Here are my steps:

根据你的建议，我已经成功安装了gcc4.8.1。这是我的步骤：

1. Remove gmp, mpfr and mpc from /opt/pkg.

2. Install gmp, mpfr and mpc with the default configure. These packages will be installed in /usr/local/lib.

3. export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH.

4. Enter the gcc source dir, run "./configure".

5. make.

6. Add symbol links:

   sudo ln -s /usr/local/lib/libgmp.so.10 /usr/lib/libgmp.so.10

   sudo ln -s /usr/local/lib/libmpfr.so.4 /usr/lib/libmpfr.so.4

   sudo ln -s /usr/local/lib/libmpc.so.3 /usr/lib/libmpc.so.3

7. sudo make install.

1. 从 /opt/pkg 中删除 gmp、mpfr 和 mpc。

2. 使用默认配置安装 gmp、mpfr 和 mpc。这些软件包将安装在 /usr/local/lib 中。

3. 导出 LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH。

4. 进入 gcc 源目录，运行“./configure”。

5. 制作。

6. 添加符号链接：

   须藤 ln -s /usr/local/lib/libgmp.so.10 /usr/lib/libgmp.so.10

   须藤 ln -s /usr/local/lib/libmpfr.so.4 /usr/lib/libmpfr.so.4

   须藤 ln -s /usr/local/lib/libmpc.so.3 /usr/lib/libmpc.so.3

7. 须藤制作安装。

Than you KiaMorot. Thank you trojanfoe.

比你起亚莫罗特。谢谢木马。

回答by Martin Konecny

I don't believe any of the answers here address the issue. Your problem is the last two steps

我不相信这里的任何答案都解决了这个问题。你的问题是最后两步

export LD_LIBRARY_PATH=/opt/pkg/gmp5.1.2/lib:/opt/pkg/mpfr3.1.2/lib:/opt/pkg/mpc1.0.1/lib
sudo make install

exporting your LD_LIBRARY_PATHis correct, but then you reset all environment variables when you change to root user with sudoin the last step.

导出LD_LIBRARY_PATH是正确的，但是当您sudo在最后一步更改为 root 用户时，您会重置所有环境变量。

One way to get around this:

解决此问题的一种方法：

sudo -s  # become root user
export LD_LIBRARY_PATH=/opt/pkg/gmp5.1.2/lib:/opt/pkg/mpfr3.1.2/lib:/opt/pkg/mpc1.0.1/lib
make install  # don't use sudo here

回答by cidermole

If anybody stumbles upon this using their own manually-built version of libgmp, libmpfr and libmpc instead of the system-provided ones:

如果有人使用他们自己手动构建的 libgmp、libmpfr 和 libmpc 版本而不是系统提供的版本偶然发现了这一点：

export LD_LIBRARY_PATH=/opt/your-prefix-directory

is necessary for makeitself, i.e. even when gcc./configurewas run with

make本身是必要的，即即使在gcc./configure运行时

--with-gmp=/opt/your-prefix-directory --with-mpc=/opt/your-prefix-directory --with-mpfr=/opt/your-prefix-directory

you need to specify where the linker should go looking for libgmp and friends.

您需要指定链接器应该去哪里寻找 libgmp 和朋友。