[673b0d8] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
|
---|
[b06ca36] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
---|
| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
---|
[673b0d8] | 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
|
---|
| 5 | %general-entities;
|
---|
| 6 | ]>
|
---|
[1f7ca93] | 7 |
|
---|
[9652249] | 8 | <sect1 id="ch-tools-gcc-pass1" role="wrap">
|
---|
[1f7ca93] | 9 | <?dbhtml filename="gcc-pass1.html"?>
|
---|
| 10 |
|
---|
[e747759] | 11 | <sect1info condition="script">
|
---|
| 12 | <productname>gcc</productname>
|
---|
| 13 | <productnumber>&gcc-version;</productnumber>
|
---|
| 14 | <address>&gcc-url;</address>
|
---|
| 15 | </sect1info>
|
---|
| 16 |
|
---|
[1f7ca93] | 17 | <title>GCC-&gcc-version; - Pass 1</title>
|
---|
| 18 |
|
---|
| 19 | <indexterm zone="ch-tools-gcc-pass1">
|
---|
| 20 | <primary sortas="a-GCC">GCC</primary>
|
---|
| 21 | <secondary>tools, pass 1</secondary>
|
---|
| 22 | </indexterm>
|
---|
| 23 |
|
---|
| 24 | <sect2 role="package">
|
---|
| 25 | <title/>
|
---|
[bc82645e] | 26 |
|
---|
[d9441360] | 27 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
|
---|
[1f7ca93] | 28 | href="../chapter06/gcc.xml"
|
---|
| 29 | xpointer="xpointer(/sect1/sect2[1]/para[1])"/>
|
---|
[81fd230] | 30 |
|
---|
[1f7ca93] | 31 | <segmentedlist>
|
---|
| 32 | <segtitle>&buildtime;</segtitle>
|
---|
| 33 | <segtitle>&diskspace;</segtitle>
|
---|
[5888299] | 34 |
|
---|
[1f7ca93] | 35 | <seglistitem>
|
---|
[e4a5635] | 36 | <seg>&gcc-ch5p1-sbu;</seg>
|
---|
| 37 | <seg>&gcc-ch5p1-du;</seg>
|
---|
[1f7ca93] | 38 | </seglistitem>
|
---|
| 39 | </segmentedlist>
|
---|
[673b0d8] | 40 |
|
---|
[1f7ca93] | 41 | </sect2>
|
---|
[73aedd1d] | 42 |
|
---|
[1f7ca93] | 43 | <sect2 role="installation">
|
---|
[4e82d47] | 44 | <title>Installation of Cross GCC</title>
|
---|
[73aedd1d] | 45 |
|
---|
[4916842] | 46 | <para>GCC now requires the GMP, MPFR and MPC packages. As these packages may
|
---|
[6cc0516] | 47 | not be included in your host distribution, they will be built with
|
---|
[95c681a] | 48 | GCC. Unpack each package into the GCC source directory and rename the
|
---|
| 49 | resulting directories so the GCC build procedures will automatically
|
---|
| 50 | use them:</para>
|
---|
[6cc0516] | 51 |
|
---|
[7ce01e0] | 52 | <screen><userinput remap="pre">tar -jxf ../mpfr-&mpfr-version;.tar.bz2
|
---|
[e311865] | 53 | mv -v mpfr-&mpfr-version; mpfr
|
---|
[7ce01e0] | 54 | tar -jxf ../gmp-&gmp-version;.tar.bz2
|
---|
[4916842] | 55 | mv -v gmp-&gmp-version; gmp
|
---|
| 56 | tar -zxf ../mpc-&mpc-version;.tar.gz
|
---|
| 57 | mv -v mpc-&mpc-version; mpc</userinput></screen>
|
---|
[6cc0516] | 58 |
|
---|
[8aad4385] | 59 | <para>Apply a patch that will allow the building of the libiberty and zlib
|
---|
| 60 | target libraries to be disabled as these do not build correctly in a
|
---|
| 61 | cross-compiled environment:</para>
|
---|
| 62 |
|
---|
| 63 | <screen><userinput remap="pre">patch -Np1 -i ../&gcc-crosscompile-patch;</userinput></screen>
|
---|
| 64 |
|
---|
[1f7ca93] | 65 | <para>The GCC documentation recommends building GCC outside of the
|
---|
| 66 | source directory in a dedicated build directory:</para>
|
---|
[3d36131c] | 67 |
|
---|
[0445a3d] | 68 | <screen><userinput remap="pre">mkdir -v ../gcc-build
|
---|
[73aedd1d] | 69 | cd ../gcc-build</userinput></screen>
|
---|
| 70 |
|
---|
[1f7ca93] | 71 | <para>Prepare GCC for compilation:</para>
|
---|
[73aedd1d] | 72 |
|
---|
[4e82d47] | 73 | <screen><userinput remap="configure">../gcc-&gcc-version;/configure \
|
---|
| 74 | --target=$LFS_TGT --prefix=/tools \
|
---|
| 75 | --disable-nls --disable-shared --disable-multilib \
|
---|
| 76 | --disable-decimal-float --disable-threads \
|
---|
| 77 | --disable-libmudflap --disable-libssp \
|
---|
[8aad4385] | 78 | --disable-libgomp --disable-libquadmath \
|
---|
| 79 | --disable-target-libiberty --disable-target-zlib \
|
---|
| 80 | --enable-languages=c --without-ppl --without-cloog</userinput></screen>
|
---|
[81fd230] | 81 |
|
---|
[1f7ca93] | 82 | <variablelist>
|
---|
| 83 | <title>The meaning of the configure options:</title>
|
---|
| 84 |
|
---|
| 85 | <varlistentry>
|
---|
[0eb90658] | 86 | <term><parameter>--disable-shared</parameter></term>
|
---|
[1f7ca93] | 87 | <listitem>
|
---|
[c49647b1] | 88 | <para>This switch forces GCC to link its internal libraries
|
---|
[0eb90658] | 89 | statically. We do this to avoid possible issues with the host
|
---|
| 90 | system.</para>
|
---|
[1f7ca93] | 91 | </listitem>
|
---|
| 92 | </varlistentry>
|
---|
| 93 |
|
---|
[182d5d3] | 94 | <varlistentry>
|
---|
[8aad4385] | 95 | <term><parameter>--disable-decimal-float, --disable-threads, --disable-libmudflap, --disable-libssp, --disable-libgomp, --disable-libquadmath --disable-target-libiberty --disable-target-zlib</parameter></term>
|
---|
[182d5d3] | 96 | <listitem>
|
---|
[8aad4385] | 97 | <para>These switches disable support for the decimal floating point
|
---|
| 98 | extension, threading, libmudflap, libssp and libgomp, libquadmath,
|
---|
| 99 | libiberty and zlib respectively. These features will fail to compile
|
---|
| 100 | when building a cross-compiler and are not necessary for the task of
|
---|
[4e82d47] | 101 | cross-compiling the temporary libc.</para>
|
---|
[182d5d3] | 102 | </listitem>
|
---|
| 103 | </varlistentry>
|
---|
| 104 |
|
---|
[1f7ca93] | 105 | <varlistentry>
|
---|
[4e82d47] | 106 | <term><parameter>--disable-multilib</parameter></term>
|
---|
[1f7ca93] | 107 | <listitem>
|
---|
[4e82d47] | 108 | <para>On x86_64, LFS does not yet support a multilib configuration.
|
---|
| 109 | This switch is harmless for x86.</para>
|
---|
[1f7ca93] | 110 | </listitem>
|
---|
| 111 | </varlistentry>
|
---|
| 112 |
|
---|
[6e88633] | 113 | <varlistentry>
|
---|
[4e82d47] | 114 | <term><parameter>--enable-languages=c</parameter></term>
|
---|
[6e88633] | 115 | <listitem>
|
---|
[4e82d47] | 116 | <para>This option ensures that only the C compiler is built.
|
---|
| 117 | This is the only language needed now.</para>
|
---|
[6e88633] | 118 | </listitem>
|
---|
| 119 | </varlistentry>
|
---|
| 120 |
|
---|
[6123afe] | 121 | <varlistentry>
|
---|
| 122 | <term><parameter>--without-ppl, --without-cloog</parameter></term>
|
---|
| 123 | <listitem>
|
---|
| 124 | <para>These switches prevent GCC from building against the PPL and
|
---|
| 125 | CLooG libraries which may be present on the host system, but will not
|
---|
| 126 | be available in the chroot environment.</para>
|
---|
| 127 | </listitem>
|
---|
| 128 | </varlistentry>
|
---|
| 129 |
|
---|
[1f7ca93] | 130 | </variablelist>
|
---|
| 131 |
|
---|
[4e82d47] | 132 | <para>Compile GCC by running:</para>
|
---|
[b0a4c9a] | 133 |
|
---|
[0445a3d] | 134 | <screen><userinput remap="make">make</userinput></screen>
|
---|
[81fd230] | 135 |
|
---|
[1f7ca93] | 136 | <para>Compilation is now complete. At this point, the test suite would
|
---|
| 137 | normally be run, but, as mentioned before, the test suite framework is
|
---|
| 138 | not in place yet. The benefits of running the tests at this point
|
---|
| 139 | are minimal since the programs from this first pass will soon be
|
---|
| 140 | replaced.</para>
|
---|
| 141 |
|
---|
| 142 | <para>Install the package:</para>
|
---|
[73aedd1d] | 143 |
|
---|
[0445a3d] | 144 | <screen><userinput remap="install">make install</userinput></screen>
|
---|
[73aedd1d] | 145 |
|
---|
[0eb90658] | 146 | <para>Using <parameter>--disable-shared</parameter> means that the
|
---|
| 147 | <filename>libgcc_eh.a</filename> file isn't created and installed. The
|
---|
| 148 | Glibc package depends on this library as it uses
|
---|
[4e82d47] | 149 | <parameter>-lgcc_eh</parameter> within its build system. This dependency
|
---|
| 150 | can be satisfied by creating a symlink to <filename>libgcc.a</filename>,
|
---|
[0eb90658] | 151 | since that file will end up containing the objects normally contained in
|
---|
[5f7456b] | 152 | <filename>libgcc_eh.a</filename>:</para>
|
---|
[0eb90658] | 153 |
|
---|
[4e82d47] | 154 | <screen><userinput remap="install">ln -vs libgcc.a `$LFS_TGT-gcc -print-libgcc-file-name | \
|
---|
[0eb90658] | 155 | sed 's/libgcc/&_eh/'`</userinput></screen>
|
---|
| 156 |
|
---|
[1f7ca93] | 157 | </sect2>
|
---|
[bc82645e] | 158 |
|
---|
[1f7ca93] | 159 | <sect2 role="content">
|
---|
| 160 | <title/>
|
---|
[81fd230] | 161 |
|
---|
[1f7ca93] | 162 | <para>Details on this package are located in
|
---|
| 163 | <xref linkend="contents-gcc" role="."/></para>
|
---|
[81fd230] | 164 |
|
---|
[1f7ca93] | 165 | </sect2>
|
---|
| 166 |
|
---|
| 167 | </sect1>
|
---|