[a9e389d] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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[bd48e48] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [ |
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[a9e389d] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent"> |
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| 5 | %general-entities; |
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| 6 | ]> |
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| 7 | |
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| 8 | <sect1 id="ch-cross-tools-gcc-static" role="wrap"> |
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| 9 | <?dbhtml filename="gcc-static.html"?> |
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| 10 | |
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| 11 | <title>Cross GCC-&gcc-version; - Static</title> |
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| 12 | |
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| 13 | <indexterm zone="ch-cross-tools-gcc-static"> |
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| 14 | <primary sortas="a-GCC">GCC</primary> |
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| 15 | <secondary>cross tools, static</secondary> |
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| 16 | </indexterm> |
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| 17 | |
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| 18 | <sect2 role="package"> |
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| 19 | <title/> |
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| 20 | |
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| 21 | <para>The GCC package contains the GNU compiler collection, which includes |
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| 22 | the C and C++ compilers.</para> |
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| 23 | |
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| 24 | </sect2> |
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| 25 | |
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| 26 | <sect2 role="installation"> |
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| 27 | <title>Installation of Cross GCC Compiler with Static libgcc |
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| 28 | and no Threads</title> |
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| 29 | |
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| 30 | <para os="c">The GCC documentation recommends building GCC outside of the source |
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| 31 | directory in a dedicated build directory:</para> |
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| 32 | |
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| 33 | <screen os="d"><userinput>mkdir -v ../gcc-build |
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| 34 | cd ../gcc-build</userinput></screen> |
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| 35 | |
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| 36 | <para os="e">Prepare GCC for compilation:</para> |
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| 37 | |
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[35e0963] | 38 | <screen os="ae"><userinput>AR=ar LDFLAGS="-Wl,-rpath,${CLFS}/cross-tools/lib" \ |
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[e1b2402] | 39 | ../gcc-&gcc-version;/configure --prefix=${CLFS}/cross-tools \ |
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| 40 | --build=${CLFS_HOST} --host=${CLFS_HOST} --target=${CLFS_TARGET} \ |
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| 41 | --with-sysroot=${CLFS} --disable-nls --disable-shared \ |
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[35e0963] | 42 | --with-mpfr=${CLFS}/cross-tools --with-gmp=${CLFS}/cross-tools \ |
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[f6137b6] | 43 | --with-mpc=${CLFS}/cross-tools --without-headers --with-newlib \ |
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| 44 | --disable-decimal-float --disable-libgomp --disable-libmudflap \ |
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[d05636e] | 45 | --disable-libssp --disable-threads --enable-languages=c \ |
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| 46 | --with-abi=${BUILD}</userinput></screen> |
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[a9e389d] | 47 | |
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| 48 | <variablelist os="af"> |
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| 49 | <title>The meaning of the configure options:</title> |
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| 50 | |
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[f704d3f] | 51 | <varlistentry os="af1"> |
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| 52 | <term><parameter>--prefix=${CLFS}/cross-tools</parameter></term> |
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| 53 | <listitem> |
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| 54 | <para>This tells the configure script to prepare to install the |
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| 55 | package in the <filename class="directory">${CLFS}/cross-tools</filename> |
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| 56 | directory.</para> |
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| 57 | </listitem> |
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| 58 | </varlistentry> |
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| 59 | |
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| 60 | <varlistentry os="af2"> |
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| 61 | <term><parameter>--build=${CLFS_HOST}</parameter></term> |
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| 62 | <listitem> |
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| 63 | <para>This tells the configure script the triplet to use to build GCC. |
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| 64 | It will use ${CLFS_HOST} as that's where it's being built.</para> |
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| 65 | </listitem> |
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| 66 | </varlistentry> |
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| 67 | |
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| 68 | <varlistentry os="af3"> |
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| 69 | <term><parameter>--host=${CLFS_HOST}</parameter></term> |
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| 70 | <listitem> |
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| 71 | <para>This tells the configure script the triplet of the machine GCC |
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| 72 | will be executed on when actually cross compiling. It will use |
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| 73 | ${CLFS_HOST} as that's where GCC will execute when cross compiling |
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| 74 | software later.</para> |
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| 75 | </listitem> |
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| 76 | </varlistentry> |
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| 77 | |
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| 78 | <varlistentry os="af4"> |
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| 79 | <term><parameter>--target=${CLFS_TARGET}</parameter></term> |
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| 80 | <listitem> |
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| 81 | <para>This tells the configure script the triplet of the machine GCC |
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| 82 | will build executables for. It will use ${CLFS_TARGET} so that software |
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| 83 | compiled with this version of GCC can be executed on the embedded machine |
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| 84 | target.</para> |
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| 85 | </listitem> |
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| 86 | </varlistentry> |
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| 87 | |
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| 88 | <varlistentry os="af5"> |
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| 89 | <term><parameter>--with-sysroot=${CLFS}</parameter></term> |
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| 90 | <listitem> |
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| 91 | <para>This tells configure that ${CLFS} is going to be the root |
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| 92 | of our system. It will now use the specified sysroot, ${CLFS}, as |
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| 93 | a prefix of the default search paths.</para> |
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| 94 | </listitem> |
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| 95 | </varlistentry> |
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| 96 | |
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| 97 | <varlistentry os="af6"> |
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| 98 | <term><parameter>--disable-nls</parameter></term> |
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| 99 | <listitem> |
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| 100 | <para>This disables internationalization as i18n is not needed for the |
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| 101 | cross-compile tools.</para> |
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| 102 | </listitem> |
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| 103 | </varlistentry> |
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| 104 | |
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| 105 | <varlistentry os="af7"> |
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[a9e389d] | 106 | <term><parameter>--disable-shared</parameter></term> |
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| 107 | <listitem> |
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| 108 | <para>Disables the creation of the shared libraries.</para> |
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| 109 | </listitem> |
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| 110 | </varlistentry> |
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| 111 | |
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[f704d3f] | 112 | <varlistentry os="af8"> |
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| 113 | <term><parameter>--with-mpfr=${CLFS}/cross-tools</parameter></term> |
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| 114 | <listitem> |
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| 115 | <para>Tells configure where to find the |
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| 116 | <filename class="directory">lib</filename> and |
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| 117 | <filename class="directory">include</filename> directories |
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| 118 | that contain MPFR which was built earlier.</para> |
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| 119 | </listitem> |
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| 120 | </varlistentry> |
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| 121 | |
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| 122 | <varlistentry os="af9"> |
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| 123 | <term><parameter>--with-gmp=${CLFS}/cross-tools</parameter></term> |
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| 124 | <listitem> |
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| 125 | <para>Tells configure where to find the |
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| 126 | <filename class="directory">lib</filename> and |
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| 127 | <filename class="directory">include</filename> directories |
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| 128 | that contain GMP which was built earlier.</para> |
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| 129 | </listitem> |
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| 130 | </varlistentry> |
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| 131 | |
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[f6137b6] | 132 | <varlistentry os="af10"> |
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| 133 | <term><parameter>--with-mpc=${CLFS}/cross-tools</parameter></term> |
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| 134 | <listitem> |
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| 135 | <para>Tells configure where to find the |
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| 136 | <filename class="directory">lib</filename> and |
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| 137 | <filename class="directory">include</filename> directories |
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| 138 | that contain MPC which was built earlier.</para> |
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| 139 | </listitem> |
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| 140 | </varlistentry> |
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| 141 | |
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[f704d3f] | 142 | <varlistentry os="af11"> |
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| 143 | <term><parameter>--without-headers</parameter></term> |
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| 144 | <listitem> |
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| 145 | <para>Tells configure to not use any headers from any C libraries. |
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| 146 | This is needed as we haven't yet built the C library and to prevent |
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| 147 | influence from the host environment.</para> |
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| 148 | </listitem> |
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| 149 | </varlistentry> |
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| 150 | |
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| 151 | <varlistentry os="af12"> |
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| 152 | <term><parameter>--with-newlib</parameter></term> |
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| 153 | <listitem> |
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| 154 | <para>Tells configure to build libgcc without needing any C |
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| 155 | libraries.</para> |
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| 156 | </listitem> |
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| 157 | </varlistentry> |
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| 158 | |
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| 159 | <varlistentry os="af13"> |
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| 160 | <term><parameter>--disable-decimal-float</parameter></term> |
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| 161 | <listitem> |
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| 162 | <para>Tells configure to disable IEEE 754-2008 decimal floating |
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| 163 | point support. Decimal floating point support isn't needed yet.</para> |
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| 164 | </listitem> |
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| 165 | </varlistentry> |
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| 166 | |
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| 167 | <varlistentry os="af14"> |
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| 168 | <term><parameter>--disable-libgomp</parameter></term> |
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| 169 | <listitem> |
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| 170 | <para>Tells configure to not build the GOMP run-time libraries. |
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| 171 | GOMP is the GNU implementation of OpenMP, a API for shared-memory |
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| 172 | parallel programming.</para> |
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| 173 | </listitem> |
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| 174 | </varlistentry> |
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| 175 | |
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| 176 | <varlistentry os="af15"> |
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| 177 | <term><parameter>--disable-libmudflap</parameter></term> |
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| 178 | <listitem> |
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| 179 | <para>Tells configure to not build libmudflap. Mudflap is a |
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| 180 | library that can be used to help check for proper pointer usage.</para> |
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| 181 | </listitem> |
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| 182 | </varlistentry> |
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| 183 | |
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| 184 | <varlistentry os="af16"> |
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| 185 | <term><parameter>--disable-libssp</parameter></term> |
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| 186 | <listitem> |
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| 187 | <para>Tells configure not to build run-time libraries for stack |
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| 188 | smashing detection.</para> |
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| 189 | </listitem> |
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| 190 | </varlistentry> |
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| 191 | |
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| 192 | <varlistentry os="af17"> |
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[a9e389d] | 193 | <term><parameter>--disable-threads</parameter></term> |
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| 194 | <listitem> |
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| 195 | <para>This will prevent GCC from looking for the multi-thread |
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| 196 | include files, since they haven't been created for this architecture |
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| 197 | yet. GCC will be able to find the multi-thread information after |
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[f704d3f] | 198 | the glib headers are created.</para> |
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[a9e389d] | 199 | </listitem> |
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| 200 | </varlistentry> |
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| 201 | |
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[f704d3f] | 202 | <varlistentry os="af18"> |
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[a9e389d] | 203 | <term><parameter>--enable-languages=c</parameter></term> |
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| 204 | <listitem> |
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| 205 | <para>This option ensures that only the C compiler is built.</para> |
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| 206 | </listitem> |
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| 207 | </varlistentry> |
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| 208 | |
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[d05636e] | 209 | <varlistentry os="af19"> |
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| 210 | <term><parameter>--with-abi=${BUILD}</parameter></term> |
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| 211 | <listitem> |
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| 212 | <para>This option sets the ABI selected earlier.</para> |
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| 213 | </listitem> |
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| 214 | </varlistentry> |
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| 215 | |
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[a9e389d] | 216 | </variablelist> |
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| 217 | |
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| 218 | <para os="ag">Continue with compiling the package:</para> |
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| 219 | |
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[35e0963] | 220 | <screen os="ah"><userinput>make all-gcc all-target-libgcc</userinput></screen> |
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[a9e389d] | 221 | |
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| 222 | <para os="ai">Install the package:</para> |
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| 223 | |
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[35e0963] | 224 | <screen os="aj"><userinput>make install-gcc install-target-libgcc</userinput></screen> |
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[a9e389d] | 225 | |
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| 226 | </sect2> |
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| 227 | |
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| 228 | <sect2 role="content"> |
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| 229 | <title/> |
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| 230 | |
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| 231 | <para>Details on this package are located in <xref |
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| 232 | linkend="contents-gcc" role="."/></para> |
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| 233 | |
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| 234 | </sect2> |
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| 235 | |
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| 236 | </sect1> |
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