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diff --git a/libstdc++-v3/doc/html/manual/setup.html b/libstdc++-v3/doc/html/manual/setup.html index 636a4401602..069354b8ce0 100644 --- a/libstdc++-v3/doc/html/manual/setup.html +++ b/libstdc++-v3/doc/html/manual/setup.html @@ -42,6 +42,39 @@ </p><p> Finally, a few system-specific requirements: </p><div class="variablelist"><dl class="variablelist"><dt><span class="term">linux</span></dt><dd><p> + The 'gnu' locale model makes use of <code class="function">iconv</code> + for character set conversions. The relevant functions are provided + by Glibc and so are always available, however they can also be + provided by the separate GNU libiconv library. If GNU libiconv is + found when GCC is built (e.g., because its headers are installed + in <code class="filename">/usr/local/include</code>) + then the <code class="filename">libstdc++.so.6</code> library will have a + run-time dependency on <code class="filename">libiconv.so.2</code>. + If you do not want that run-time dependency then you should do + one of the following: + </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p> + Uninstall the libiconv headers before building GCC. + Glibc already provides <code class="function">iconv</code> so you should + not need libiconv anyway. + </p></li><li class="listitem"><p> + <a class="link" href="../"> + Download</a> the libiconv sources and extract them into the + top level of the GCC source tree, e.g., + </p><pre class="programlisting"> +wget https://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.16.tar.gz +tar xf libiconv-1.16.tar.gz +ln -s libiconv-1.16 libiconv +</pre><p> + This will build libiconv as part of building GCC and link to + it statically, so there is no <code class="filename">libiconv.so.2</code> + dependency. + </p></li><li class="listitem"><p> + Configure GCC with <code class="option">--with-libiconv-type=static</code>. + This requires the static <code class="filename">libiconv.a</code> library, + which is not installed by default. You might need to reinstall + libiconv using the <code class="option">--enable-static</code> configure + option to get the static library. + </p></li></ul></div><p> If GCC 3.1.0 or later on is being used on GNU/Linux, an attempt will be made to use "C" library functionality necessary for C++ named locale support. For GCC 4.6.0 and later, this |