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Diffstat (limited to 'chapter06/gcc.xml')
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1 files changed, 79 insertions, 1 deletions
diff --git a/chapter06/gcc.xml b/chapter06/gcc.xml index dd141c817..54a105db1 100644 --- a/chapter06/gcc.xml +++ b/chapter06/gcc.xml @@ -7,7 +7,85 @@ Estimated required disk space: &gcc-compsize;</screen> &aa-gcc-shortdesc; &aa-gcc-dep; -&c6-gcc-inst; + +<sect2><title> </title><para> </para></sect2> + +<sect2> +<title>Installation of GCC</title> + +<note><para>The test suite for GCC in this section is considered +<emphasis>critical</emphasis>. Our advice is to not skip it under any +circumstance.</para></note> + +<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 GCC.</para> + +<para>This time we will build both the C and the C++ compiler, so you'll have +to unpack the GCC-core <emphasis>and</emphasis> the GCC-g++ tarball -- they +will unfold into the same directory. You should likewise extract the +GCC-testsuite package. The full GCC package contains even more +compilers. Instructions for building these can be found at +<ulink url="&blfs-root;view/stable/general/gcc.html"/>.</para> + +<screen><userinput>patch -Np1 -i ../&gcc-nofixincludes-patch; +patch -Np1 -i ../&gcc-suppress-libiberty-patch;</userinput></screen> + +<para>The second patch here suppresses the installation of libiberty from GCC, +as we will use the one provided by binutils instead. Be careful +<emphasis>not</emphasis> to apply the GCC specs patch from Chapter 5 +here.</para> + +<para>The GCC documentation recommends building GCC outside of the source +directory in a dedicated build directory:</para> + +<screen><userinput>mkdir ../gcc-build +cd ../gcc-build</userinput></screen> + +<para>Now prepare GCC for compilation:</para> + +<screen><userinput>../gcc-&gcc-version;/configure --prefix=/usr \ + --enable-shared --enable-threads=posix \ + --enable-__cxa_atexit --enable-clocale=gnu \ + --enable-languages=c,c++</userinput></screen> + +<para>Compile the package:</para> + +<screen><userinput>make</userinput></screen> + +<para>Test the results, but don't stop at errors (you'll remember the few +known ones):</para> + +<screen><userinput>make -k check</userinput></screen> + +<para>The test suite notes from <xref linkend="ch05-gcc-pass2"/> are still very +much appropriate here. Be sure to refer back there should you have any +doubts.</para> + +<para>And install the package:</para> + +<screen><userinput>make install</userinput></screen> + +<para>Some packages expect the C PreProcessor to be installed in the +<filename>/lib</filename> directory. +To honor those packages, create this symlink:</para> + +<screen><userinput>ln -s ../usr/bin/cpp /lib</userinput></screen> + +<para>Many packages use the name <userinput>cc</userinput> to call the C +compiler. To satisfy those packages, create a symlink:</para> + +<screen><userinput>ln -s gcc /usr/bin/cc</userinput></screen> + +<note><para>At this point it is strongly recommended to repeat the sanity check +we performed earlier in this chapter. Refer back to +<xref linkend="ch06-adjustingtoolchain"/> and repeat the check. If the results +are wrong, then most likely you erroneously applied the GCC Specs patch from +Chapter 5.</para></note> + +</sect2> </sect1> |