| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
|
|---|
| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
|---|
| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
|---|
| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
|
|---|
| 5 | %general-entities;
|
|---|
| 6 | ]>
|
|---|
| 7 |
|
|---|
| 8 | <sect1 id="ch-cross-tools-gcc-static" role="wrap">
|
|---|
| 9 | <?dbhtml filename="gcc-static.html"?>
|
|---|
| 10 |
|
|---|
| 11 | <title>Cross GCC-&gcc-version; - Static</title>
|
|---|
| 12 |
|
|---|
| 13 | <indexterm zone="ch-cross-tools-gcc-static">
|
|---|
| 14 | <primary sortas="a-GCC">GCC</primary>
|
|---|
| 15 | <secondary>cross tools, static</secondary>
|
|---|
| 16 | </indexterm>
|
|---|
| 17 |
|
|---|
| 18 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
|
|---|
| 19 | href="../../final-system/common/gcc.xml"
|
|---|
| 20 | xpointer="xpointer(//*[@role='package'])"/>
|
|---|
| 21 |
|
|---|
| 22 | <sect2 role="installation">
|
|---|
| 23 | <title>Installation of Cross GCC Compiler with Static libgcc
|
|---|
| 24 | and no Threads</title>
|
|---|
| 25 |
|
|---|
| 26 | <para os="e">Here we will compile GCC, as a cross-compiler that will create
|
|---|
| 27 | executables for our target architecture, statically so that it will not
|
|---|
| 28 | need to look for Glibc's startfiles, which do not yet exist in
|
|---|
| 29 | <filename class="directory">/tools</filename>. We will use this
|
|---|
| 30 | cross-compiler, plus the cross-linker we have just installed with Binutils,
|
|---|
| 31 | to compile Glibc. After Glibc is installed into
|
|---|
| 32 | <filename class="directory">/tools</filename>, we can rebuild GCC
|
|---|
| 33 | so that it will then be able to build executables that link against the
|
|---|
| 34 | libraries in <filename class="directory">/tools</filename>.</para>
|
|---|
| 35 |
|
|---|
| 36 | <!--GCC Branch Update Area
|
|---|
| 37 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
|
|---|
| 38 | href="../../final-system/common/gcc.xml"
|
|---|
| 39 | xpointer="xpointer(//*[@os='p1'])"/>
|
|---|
| 40 |
|
|---|
| 41 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
|
|---|
| 42 | href="../../final-system/common/gcc.xml"
|
|---|
| 43 | xpointer="xpointer(//*[@os='p2'])"/>
|
|---|
| 44 | -->
|
|---|
| 45 |
|
|---|
| 46 | <para os="aa">Make a couple of essential adjustments to GCC's specs
|
|---|
| 47 | to ensure GCC uses our build environment:</para>
|
|---|
| 48 |
|
|---|
| 49 | <screen os="ab"><userinput>patch -Np1 -i ../&gcc-specs-patch;</userinput></screen>
|
|---|
| 50 |
|
|---|
| 51 | <para os="ag">Change the StartFile Spec so that GCC looks in
|
|---|
| 52 | <filename class="directory">/tools</filename>:</para>
|
|---|
| 53 |
|
|---|
| 54 | <screen os="ah"><userinput>echo -en '\n#undef STANDARD_STARTFILE_PREFIX_1\n#define STANDARD_STARTFILE_PREFIX_1 "/tools/lib/"\n' >> gcc/config/linux.h
|
|---|
| 55 | echo -en '\n#undef STANDARD_STARTFILE_PREFIX_2\n#define STANDARD_STARTFILE_PREFIX_2 ""\n' >> gcc/config/linux.h</userinput></screen>
|
|---|
| 56 |
|
|---|
| 57 | <para os="t1">We will create a dummy <filename>limits.h</filename> so
|
|---|
| 58 | the build will not use the one provided by the host distro:</para>
|
|---|
| 59 |
|
|---|
| 60 | <screen os="t2"><userinput>touch /tools/include/limits.h</userinput></screen>
|
|---|
| 61 |
|
|---|
| 62 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
|
|---|
| 63 | href="../../final-system/common/gcc.xml"
|
|---|
| 64 | xpointer="xpointer(//*[@os='f'])"/>
|
|---|
| 65 |
|
|---|
| 66 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
|
|---|
| 67 | href="../../final-system/common/gcc.xml"
|
|---|
| 68 | xpointer="xpointer(//*[@os='g'])"/>
|
|---|
| 69 |
|
|---|
| 70 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
|
|---|
| 71 | href="../../final-system/common/gcc.xml"
|
|---|
| 72 | xpointer="xpointer(//*[@os='h'])"/>
|
|---|
| 73 |
|
|---|
| 74 | <screen os="al"><userinput>AR=ar \
|
|---|
| 75 | LDFLAGS="-Wl,-rpath,/cross-tools/lib" \
|
|---|
| 76 | ../gcc-&gcc-version;/configure \
|
|---|
| 77 | --prefix=/cross-tools \
|
|---|
| 78 | --build=${CLFS_HOST} \
|
|---|
| 79 | --host=${CLFS_HOST} \
|
|---|
| 80 | --target=${CLFS_TARGET} \
|
|---|
| 81 | --with-sysroot=${CLFS} \
|
|---|
| 82 | --with-local-prefix=/tools \
|
|---|
| 83 | --with-native-system-header-dir=/tools/include \
|
|---|
| 84 | --disable-shared \
|
|---|
| 85 | --with-mpfr=/cross-tools \
|
|---|
| 86 | --with-gmp=/cross-tools \
|
|---|
| 87 | --with-isl=/cross-tools \
|
|---|
| 88 | --with-mpc=/cross-tools \
|
|---|
| 89 | --without-headers \
|
|---|
| 90 | --with-newlib \
|
|---|
| 91 | --disable-decimal-float \
|
|---|
| 92 | --disable-libgomp \
|
|---|
| 93 | --disable-libssp \
|
|---|
| 94 | --disable-libatomic \
|
|---|
| 95 | --disable-libitm \
|
|---|
| 96 | --disable-libsanitizer \
|
|---|
| 97 | --disable-libquadmath \
|
|---|
| 98 | --disable-libvtv \
|
|---|
| 99 | --disable-libcilkrts \
|
|---|
| 100 | --disable-libstdc++-v3 \
|
|---|
| 101 | --disable-threads \
|
|---|
| 102 | --disable-multilib \
|
|---|
| 103 | --enable-languages=c \
|
|---|
| 104 | --with-glibc-version=&glibc-version;</userinput></screen>
|
|---|
| 105 |
|
|---|
| 106 | <variablelist os="am">
|
|---|
| 107 | <title>The meaning of the new configure options:</title>
|
|---|
| 108 |
|
|---|
| 109 | <varlistentry>
|
|---|
| 110 | <term><parameter>--build=${CLFS_HOST}</parameter></term>
|
|---|
| 111 | <listitem>
|
|---|
| 112 | <para>This specifies the system on which the cross-compiler is being
|
|---|
| 113 | built.</para>
|
|---|
| 114 | </listitem>
|
|---|
| 115 | </varlistentry>
|
|---|
| 116 |
|
|---|
| 117 | <varlistentry>
|
|---|
| 118 | <term><parameter>--with-local-prefix=/tools</parameter></term>
|
|---|
| 119 | <listitem>
|
|---|
| 120 | <para>The purpose of this switch is to remove <filename
|
|---|
| 121 | class="directory">/usr/local/include</filename> from
|
|---|
| 122 | <command>gcc</command>'s include search path. This is not
|
|---|
| 123 | absolutely essential, however, it helps to minimize the
|
|---|
| 124 | influence of the host system.</para>
|
|---|
| 125 | </listitem>
|
|---|
| 126 | </varlistentry>
|
|---|
| 127 |
|
|---|
| 128 | <varlistentry>
|
|---|
| 129 | <term><parameter>--with-native-system-headers-dir=/tools/include</parameter></term>
|
|---|
| 130 | <listitem>
|
|---|
| 131 | <para>This switch ensures that GCC will search for the system headers
|
|---|
| 132 | in <filename class="directory">/tools/include</filename> and that
|
|---|
| 133 | host system headers will not be searched.</para>
|
|---|
| 134 | </listitem>
|
|---|
| 135 | </varlistentry>
|
|---|
| 136 |
|
|---|
| 137 | <varlistentry>
|
|---|
| 138 | <term><parameter>--disable-shared</parameter></term>
|
|---|
| 139 | <listitem>
|
|---|
| 140 | <para>This tells GCC not to create a shared library.</para>
|
|---|
| 141 | </listitem>
|
|---|
| 142 | </varlistentry>
|
|---|
| 143 |
|
|---|
| 144 | <varlistentry>
|
|---|
| 145 | <term><parameter>--without-headers</parameter></term>
|
|---|
| 146 | <listitem>
|
|---|
| 147 | <para>Disables GCC from using the target's Libc when cross compiling.</para>
|
|---|
| 148 | </listitem>
|
|---|
| 149 | </varlistentry>
|
|---|
| 150 |
|
|---|
| 151 | <varlistentry>
|
|---|
| 152 | <term><parameter>--with-newlib</parameter></term>
|
|---|
| 153 | <listitem>
|
|---|
| 154 | <para>This causes GCC to enable the <envar>inhibit_libc</envar> flag,
|
|---|
| 155 | which prevents <filename class="libraryfile">libgcc</filename>
|
|---|
| 156 | from building code that uses libc support.</para>
|
|---|
| 157 | </listitem>
|
|---|
| 158 | </varlistentry>
|
|---|
| 159 |
|
|---|
| 160 | <varlistentry>
|
|---|
| 161 | <term><parameter>--disable-decimal-float</parameter></term>
|
|---|
| 162 | <listitem>
|
|---|
| 163 | <para>Disables support for the C decimal floating point extension.</para>
|
|---|
| 164 | </listitem>
|
|---|
| 165 | </varlistentry>
|
|---|
| 166 |
|
|---|
| 167 | <varlistentry>
|
|---|
| 168 | <term><parameter>--disable-lib*</parameter></term>
|
|---|
| 169 | <listitem>
|
|---|
| 170 | <para>These options prevent GCC from building a number of libraries
|
|---|
| 171 | that are not needed at this time.</para>
|
|---|
| 172 | </listitem>
|
|---|
| 173 | </varlistentry>
|
|---|
| 174 |
|
|---|
| 175 | <varlistentry>
|
|---|
| 176 | <term><parameter>--disable-threads</parameter></term>
|
|---|
| 177 | <listitem>
|
|---|
| 178 | <para>This will prevent GCC from looking for the multi-thread
|
|---|
| 179 | include files, since they haven't been created for this architecture
|
|---|
| 180 | yet. GCC will be able to find the multi-thread information after
|
|---|
| 181 | the Glibc headers are created.</para>
|
|---|
| 182 | </listitem>
|
|---|
| 183 | </varlistentry>
|
|---|
| 184 |
|
|---|
| 185 | <varlistentry>
|
|---|
| 186 | <term><parameter>--with-system-zlib</parameter></term>
|
|---|
| 187 | <listitem>
|
|---|
| 188 | <para>This tells GCC to link to the system-installed zlib instead
|
|---|
| 189 | of the one in its source tree.</para>
|
|---|
| 190 | </listitem>
|
|---|
| 191 | </varlistentry>
|
|---|
| 192 |
|
|---|
| 193 | <varlistentry>
|
|---|
| 194 | <term><parameter>--enable-languages=c</parameter></term>
|
|---|
| 195 | <listitem>
|
|---|
| 196 | <para>This option ensures that only the C compiler is built.</para>
|
|---|
| 197 | </listitem>
|
|---|
| 198 | </varlistentry>
|
|---|
| 199 |
|
|---|
| 200 | <varlistentry>
|
|---|
| 201 | <term><parameter>--with-glibc-version=&glibc-version;</parameter></term>
|
|---|
| 202 | <listitem>
|
|---|
| 203 | <para>Needed when bootstrapping a cross toolchain without the header
|
|---|
| 204 | files available for building the initial bootstrap compiler.</para>
|
|---|
| 205 | </listitem>
|
|---|
| 206 | </varlistentry>
|
|---|
| 207 |
|
|---|
| 208 | </variablelist>
|
|---|
| 209 |
|
|---|
| 210 | <para os="an">Continue with compiling the package:</para>
|
|---|
| 211 |
|
|---|
| 212 | <screen os="ao"><userinput>make all-gcc all-target-libgcc</userinput></screen>
|
|---|
| 213 |
|
|---|
| 214 | <variablelist os="ap">
|
|---|
| 215 | <title>The meaning of the new make options:</title>
|
|---|
| 216 |
|
|---|
| 217 | <varlistentry>
|
|---|
| 218 | <term><parameter>all-gcc all-target-libgcc</parameter></term>
|
|---|
| 219 | <listitem>
|
|---|
| 220 | <para>Compiles only the parts of GCC that are needed at this time,
|
|---|
| 221 | rather than the full package.</para>
|
|---|
| 222 | </listitem>
|
|---|
| 223 | </varlistentry>
|
|---|
| 224 |
|
|---|
| 225 | </variablelist>
|
|---|
| 226 |
|
|---|
| 227 | <para os="aq">Install the package:</para>
|
|---|
| 228 |
|
|---|
| 229 | <screen os="ar"><userinput>make install-gcc install-target-libgcc</userinput></screen>
|
|---|
| 230 |
|
|---|
| 231 | </sect2>
|
|---|
| 232 |
|
|---|
| 233 | <sect2 role="content">
|
|---|
| 234 | <title/>
|
|---|
| 235 |
|
|---|
| 236 | <para>Details on this package are located in <xref
|
|---|
| 237 | linkend="contents-gcc" role="."/></para>
|
|---|
| 238 |
|
|---|
| 239 | </sect2>
|
|---|
| 240 |
|
|---|
| 241 | </sect1>
|
|---|
