glfs/general/prog/gcc/gcc-exp.xml

<sect2>
<title>Command explanations</title>

<para><userinput>export CC=cc</userinput> : This command allows you to
use gcc's C compiler instead of gnat's C compiler.</para>

<para><userinput>export PATH_HOLD=$PATH</userinput> : This command
stores your current path before it's modified so that it can be restored after
installation.</para>

<para><userinput>export PATH=/usr/src/gnat/bin:$PATH</userinput> : This
command allows the build to find gnat's Ada compiler to build
Ada.</para>

<para><userinput>--enable-languages=c,c++,objc,f77,ada,java</userinput>
: This command builds all available languages in the gcc package except
java.  You can modify this command to remove unwanted languages. If you
are removing Ada, use the separate installation instructions below.</para>

<para><userinput>-- enable shared --enable-threads=posix
--enable-__cxa_atexit</userinput> : These commands are required to build
the C++ libraries to published standards.</para>

<para><userinput>--with-slibdir=/lib</userinput> : This command sets the path to
libgcc_s.so.</para>

<para><userinput>--enable-clocale=gnu</userinput> : This command is a
failsafe for incomplete localedata.</para>

<para><userinput>touch treeprs.ads [es]info.h nmake.ad[bs]</userinput> : This command creates necessary files for the Ada build.</para>

<para><userinput>make gnatlib_and tools</userinput> : This command
completes the Ada build process.</para>

</sect2>