lfs-book-zh_CN/chapter06/binutils-inst.xml

<sect2><title>&nbsp;</title><para>&nbsp;</para></sect2>

<sect2><title>Installation of Binutils</title>

<para>This package is known to behave badly when you have changed its
default optimization flags (including the -march and -mcpu options).
Therefore, if you have defined any environment variables that override
default optimizations, such as CFLAGS and CXXFLAGS, we recommend unsetting
or modifying them when building binutils.</para>

<para>It is recommended by the Binutils installation documentation to build
Binutils outside of the source directory:</para>

<para><screen><userinput>mkdir ../binutils-build &amp;&amp;
cd ../binutils-build</userinput></screen></para>

<para>Next, prepare Binutils to be compiled:</para>

<para><screen><userinput>../binutils-&binutils-version;/configure --prefix=/usr --enable-shared</userinput></screen></para>

<para>Continue with compiling the package:</para>

<para><screen><userinput>make tooldir=/usr</userinput></screen></para>

<para>Normally, the <emphasis>tooldir</emphasis> (the directory where the
executables end up) is set to $(exec_prefix)/$(target_alias) which expands
into, for example, /usr/i686-pc-linux-gnu. Since we only build for our
own system, we don't need this target specific directory in /usr. That
setup would be used if the system was used to cross-compile (for example
compiling a package on the Intel machine that generates code that can be
executed on Apple PowerPC machines).</para>

<para>Install the package:</para>

<para><screen><userinput>make tooldir=/usr install</userinput></screen></para>

<para>Install the info pages:</para>

<para><screen><userinput>make tooldir=/usr install-info</userinput></screen></para>

<para>Some packages require the <emphasis>libiberty</emphasis> header
in order to build. To honor those packages, install the file:</para>

<para><screen><userinput>cp ../binutils-&binutils-version;/include/libiberty.h /usr/include</userinput></screen></para>

</sect2>