blocks|key|592693|text|我发现，如果我运行export+C_INCLUDE_PATH=/cross/gcc-4.5.2/mpfr/src，然后运行export+LD_LIBRARY_PATH=/cross/build-gcc-4.5.2/mpfr/src/.libs，最后运行export+LIBRARY_PATH=$LD_LIBRARY_PATH，一切都会按预期运行。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|592694|令人困扰的问题是，为什么gcc自己的配置脚本设置了错误的标志。它应该知道mpfr的lib不在mpfr/.libs中，而是在mpfr/src/.libs中，但是它会将前者传递给mpc/configure。|592695|entityMap^0|9|1B|1P|1O|3I|10|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|R|8|@]|D|@]|E|$]]]|I|$]]

I found that if I ran <code>export C_INCLUDE_PATH=/cross/gcc-4.5.2/mpfr/src</code> then <code>export LD_LIBRARY_PATH=/cross/build-gcc-4.5.2/mpfr/src/.libs</code> and finally <code>export LIBRARY_PATH=$LD_LIBRARY_PATH</code> everything worked as expected.

The nagging question is why gcc's own configure scripts set the flags wrong. It should know that mpfr's libs are not in mpfr/.libs but in mpfr/src/.libs, however it passes the former to mpc/configure.

blocks|key|592406|text|我也有同样的问题。但这似乎是因为最新版本的MPFR+(在您的情况下为3.1.0)更改了目录层次结构。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|592407|相反，在配置之前，请在进入gcc的源目录时运行以下命令(可能仅适用于gcc4.5.2或更高版本)：|592408|./contrib/download_prerequisites|code-block|syntax|javascript|592409|它将下载必要的MPFR、GMP和MPC版本(但可能不是最新版本)，并解压这些版本以便安装gcc。|592410|在此之后，您可以继续配置、制作和进行安装。|592411|希望这能有所帮助。|592412|-Rakib|592413|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I was having the same issue. 
But it seems this happens because latest version of MPFR (in your case 3.1.0) changed the directory hierarchy.

Instead, before configuring, run the following when you are inside gcc's source directory (may only work for gcc4.5.2 or later):

<pre><code>./contrib/download_prerequisites
</code></pre>

It will download the necessary MPFR, GMP and MPC versions (but probably not the latest versions) and unpack those for gcc installation.

After that, you can continue with your configure, make and make install.

Hope this helps.

-Rakib

blocks|key|1612779|text|在配置时尝试以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1612780|./configure+--prefix=<DIR+YOU+WANT+TO+INSTALL+GCC>+\
--with-gmp=<DIRECTORY+YOU+INSTALLED+GMP>+\
--with-mpc=<MPC+DIR>+--with-mpfr=<MPFR+DIR>|code-block|syntax|javascript|1612781|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this while configuring:

<pre><code>./configure --prefix=&lt;DIR YOU WANT TO INSTALL GCC&gt; \
--with-gmp=&lt;DIRECTORY YOU INSTALLED GMP&gt; \
--with-mpc=&lt;MPC DIR&gt; --with-mpfr=&lt;MPFR DIR&gt;
</code></pre>

blocks|key|592438|text|几个小时以来，我遇到了同样的问题，但我用另一种方法解决了它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|592439|我已经删除了所有的旧文件夹，比如gcc-4.*和gcc-build，因为里面有一个旧的配置。在那之后，我再次使用version-check.sh检查是否一切都在正确的位置。|592440|我用的是Debian，它缺少bison和gnu+awk！管他呢。我重新安装了这两个软件，并从安装gcc开始。现在一切都好了。|592441|也许你有类似的问题，可以用同样的方式解决。我每次启动vbox时都要检查，可能是我的vbox镜像有问题，所以当我启动vbox时，我会运行一次版本检查。|592442|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I've had the same problem for a few hours, but I solved it in another other way. 

I've deleted all old folders like gcc-4.* and gcc-build, because there was an old configuration inside. After that, I checked out again with version-check.sh if everything was in the right location.

I used Debian and it was missing bison and gnu awk! Why whatever. I installed the two again and started with installing gcc. Now everything is OK.

Perhapse you have a similar problam which can be solved in the same manner. I have to check every time when I start vbox and maybe it is a problem with my vbox-image, so when I start vbox I run a versions-check.

blocks|key|592457|text|我没有使用--with-mpfr=，而是使用了--with-mpfr-lib=your-mprf-dir/lib(64?)+-with-mpfr-include=your-mprf-dir/include。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|592458|这对我很有效。PS:+mprf-3.1.0+gmp-5.0.2+mpc-0.9|592459|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

instead of --with-mpfr=, I used --with-mpfr-lib=your-mprf-dir/lib(64?) --with-mpfr-include=your-mprf-dir/include.

This works for me.
PS: mprf-3.1.0 gmp-5.0.2 mpc-0.9

blocks|key|592785|text|不需要，你可以像这样尝试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|592786|./configure+\
--with-gmp=/opt/install/local\
--with-mpfr=/opt/install/local+\
--with-mpc=/opt/install/local+\
--with-gmp-include=/opt/install/build/gmp-6.0.0+\
--with-mpfr-include=/opt/install/build/mpfr-3.1.2/src+\
--with-mpc-include=/opt/install/build/mpc-1.0.2/src+--enable-languages=c,c%2B%2B|code-block|syntax|javascript|592787|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

No need you can try like this:

<pre><code>./configure \
--with-gmp=/opt/install/local\
--with-mpfr=/opt/install/local \
--with-mpc=/opt/install/local \
--with-gmp-include=/opt/install/build/gmp-6.0.0 \
--with-mpfr-include=/opt/install/build/mpfr-3.1.2/src \
--with-mpc-include=/opt/install/build/mpc-1.0.2/src --enable-languages=c,c++
</code></pre>

I'm installing gcc 4.5.2 with mpc 0.8.2, mpfr 3.1.0, and gmp 5.0.2. I've copied each of the mpc, mpfr, and gmp directories into the gcc-4.5.2 directory (removing the version tags). GCC successfully configures. When I run make, however, I get:

<pre><code>checking for MPFR... no
configure: error: libmpfr not found or uses a different ABI.
make[1]: *** [configure-mpc] Error 1
make[1]: leaving directory cross/build/gcc
make: *** [all] Error 2
</code></pre>

MPFR is located in cross/src/gcc-4.5.2/mpfr. MPFR already was built successfully. Anyone know why mpc is unable to configure?

I think the problem may partially have to do with the libs/headers for MPFR being in cross/src/gcc-4.5.2/mpfr/src and not in cross/src/gcc-4.5.2/mpfr. All I did was extract and copy though- this is the default directory structure.

Cannot configure gcc - mpfr not found

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在安装带有mpc 0.8.2、mpfr 3.1.0和gmp 5.0.2的gcc 4.5.2。我已经将mpc、mpfr和gmp目录复制到了gcc-4.5.2目录中(去掉了版本标签)。GCC成功地配置了。然而，当我运行make时，我得到：checking for MPFR... noconfigure: error: libmpfr not found or uses a different AB

问无法配置gcc -找不到mpfr
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