lfs-book/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). Binutils
is best left alone. 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. You have
been warned.</para>

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