[3f8be484] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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[aa18ac0] | 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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[3f8be484] | 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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[dabbced] | 18 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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[cf66ceae] | 19 | href="../../final-system/common/gcc.xml" |
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| 20 | xpointer="xpointer(//*[@role='package'])"/> |
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[3f8be484] | 21 | |
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| 22 | <sect2 role="installation"> |
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| 23 | <title>Installation of Cross GCC Compiler with Static libgcc |
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| 24 | and no Threads</title> |
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| 25 | |
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[9e0069f] | 26 | <para os="e">Here we will compile GCC, as a cross-compiler that will create |
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[2d1be42] | 27 | executables for our target architecture, statically so that it will not |
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[9e0069f] | 28 | need to look for Glibc's startfiles, which do not yet exist in |
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| 29 | <filename class="directory">/tools</filename>. We will use this |
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| 30 | cross-compiler, plus the cross-linker we have just installed with Binutils, |
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| 31 | to compile Glibc. After Glibc is installed into |
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| 32 | <filename class="directory">/tools</filename>, we can rebuild GCC |
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| 33 | so that it will then be able to build executables that link against the |
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| 34 | libraries in <filename class="directory">/tools</filename>.</para> |
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| 35 | |
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[cc858ed] | 36 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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| 37 | href="../../final-system/common/gcc.xml" |
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| 38 | xpointer="xpointer(//*[@os='p1'])"/> |
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| 39 | |
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| 40 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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| 41 | href="../../final-system/common/gcc.xml" |
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| 42 | xpointer="xpointer(//*[@os='p2'])"/> |
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| 43 | |
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[3d00fcbe] | 44 | <para os="aa">Make a couple of essential adjustments to GCC's specs |
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| 45 | to ensure GCC uses our build environment:</para> |
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[3f8be484] | 46 | |
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| 47 | <screen os="ab"><userinput>patch -Np1 -i ../&gcc-specs-patch;</userinput></screen> |
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| 48 | |
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[24b004c] | 49 | <para os="ag">Change the StartFile Spec so that GCC looks in |
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[4dbd276] | 50 | <filename class="directory">/tools</filename>:</para> |
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[d04ed61] | 51 | |
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[d3a81ee] | 52 | <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 |
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| 53 | echo -en '\n#undef STANDARD_STARTFILE_PREFIX_2\n#define STANDARD_STARTFILE_PREFIX_2 ""\n' >> gcc/config/linux.h</userinput></screen> |
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[d04ed61] | 54 | |
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[3cf4292] | 55 | <para os="t1">We will create a dummy <filename>limits.h</filename> so |
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| 56 | the build will not use the one provided by the host distro:</para> |
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[562a0ae] | 57 | |
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[3309623] | 58 | <screen os="t2"><userinput>touch /tools/include/limits.h</userinput></screen> |
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[562a0ae] | 59 | |
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[dabbced] | 60 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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[3f8be484] | 61 | href="../../final-system/common/gcc.xml" |
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| 62 | xpointer="xpointer(//*[@os='f'])"/> |
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| 63 | |
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[dabbced] | 64 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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[3f8be484] | 65 | href="../../final-system/common/gcc.xml" |
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| 66 | xpointer="xpointer(//*[@os='g'])"/> |
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| 67 | |
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[dabbced] | 68 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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[3f8be484] | 69 | href="../../final-system/common/gcc.xml" |
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| 70 | xpointer="xpointer(//*[@os='h'])"/> |
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| 71 | |
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[88958a8] | 72 | <screen os="al"><userinput>AR=ar LDFLAGS="-Wl,-rpath,/cross-tools/lib" \ |
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[04c3a53] | 73 | ../gcc-&gcc-version;/configure --prefix=/cross-tools \ |
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| 74 | --build=${CLFS_HOST} --host=${CLFS_HOST} --target=${CLFS_TARGET} \ |
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| 75 | --with-sysroot=${CLFS} --with-local-prefix=/tools \ |
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| 76 | --with-native-system-header-dir=/tools/include --disable-nls \ |
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| 77 | --disable-shared --with-mpfr=/cross-tools --with-gmp=/cross-tools \ |
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| 78 | --with-isl=/cross-tools --with-cloog=/cross-tools --with-mpc=/cross-tools \ |
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| 79 | --without-headers --with-newlib --disable-decimal-float --disable-libgomp \ |
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| 80 | --disable-libmudflap --disable-libssp --disable-libatomic --disable-libitm \ |
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| 81 | --disable-libsanitizer --disable-libquadmath --disable-threads \ |
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| 82 | --disable-multilib --disable-target-zlib --with-system-zlib \ |
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| 83 | --enable-languages=c --enable-checking=release</userinput></screen> |
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[3f8be484] | 84 | |
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[d55f00bc] | 85 | <variablelist os="am"> |
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[d755bc7] | 86 | <title>The meaning of the new configure options:</title> |
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[26b5617] | 87 | |
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[3f8be484] | 88 | <varlistentry> |
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| 89 | <term><parameter>--with-local-prefix=/tools</parameter></term> |
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| 90 | <listitem> |
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| 91 | <para>The purpose of this switch is to remove <filename |
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| 92 | class="directory">/usr/local/include</filename> from |
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| 93 | <command>gcc</command>'s include search path. This is not |
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| 94 | absolutely essential, however, it helps to minimize the |
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| 95 | influence of the host system.</para> |
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| 96 | </listitem> |
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| 97 | </varlistentry> |
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| 98 | |
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[4dbd276] | 99 | <varlistentry> |
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| 100 | <term><parameter>--with-native-system-headers-dir=/tools/include</parameter></term> |
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| 101 | <listitem> |
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| 102 | <para>This switch ensures that GCC will search for the system headers |
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| 103 | in <filename class="directory">/tools/include</filename> and that |
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| 104 | host system headers will not be searched.</para> |
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| 105 | </listitem> |
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| 106 | </varlistentry> |
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| 107 | |
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[852824db] | 108 | <varlistentry> |
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| 109 | <term><parameter>--disable-shared</parameter></term> |
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| 110 | <listitem> |
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| 111 | <para>This tells GCC not to create a shared library.</para> |
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| 112 | </listitem> |
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| 113 | </varlistentry> |
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| 114 | |
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[26b5617] | 115 | <varlistentry> |
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| 116 | <term><parameter>--without-headers</parameter></term> |
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| 117 | <listitem> |
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| 118 | <para>Disables GCC from using the target's Libc when cross compiling.</para> |
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| 119 | </listitem> |
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| 120 | </varlistentry> |
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| 121 | |
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| 122 | <varlistentry> |
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| 123 | <term><parameter>--with-newlib</parameter></term> |
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| 124 | <listitem> |
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[a882002] | 125 | <para>This causes GCC to enable the <envar>inhibit_libc</envar> flag, |
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| 126 | which prevents <filename class="libraryfile">libgcc</filename> |
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| 127 | from building code that uses libc support.</para> |
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[26b5617] | 128 | </listitem> |
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| 129 | </varlistentry> |
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| 130 | |
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| 131 | <varlistentry> |
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| 132 | <term><parameter>--disable-decimal-float</parameter></term> |
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| 133 | <listitem> |
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| 134 | <para>Disables support for the C decimal floating point extension.</para> |
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| 135 | </listitem> |
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| 136 | </varlistentry> |
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| 137 | |
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| 138 | <varlistentry> |
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[a43ce31] | 139 | <term><parameter>--disable-lib*</parameter></term> |
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[26b5617] | 140 | <listitem> |
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[a43ce31] | 141 | <para>These options prevent GCC from building a number of libraries |
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| 142 | that are not needed at this time.</para> |
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[26b5617] | 143 | </listitem> |
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| 144 | </varlistentry> |
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| 145 | |
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[3f8be484] | 146 | <varlistentry> |
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| 147 | <term><parameter>--disable-threads</parameter></term> |
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| 148 | <listitem> |
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[193315c] | 149 | <para>This will prevent GCC from looking for the multi-thread |
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[6d4c909] | 150 | include files, since they haven't been created for this architecture |
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| 151 | yet. GCC will be able to find the multi-thread information after |
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| 152 | the Glibc headers are created.</para> |
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[3f8be484] | 153 | </listitem> |
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| 154 | </varlistentry> |
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| 155 | |
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[4dbd276] | 156 | <varlistentry> |
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[a43ce31] | 157 | <term><parameter>--disable-target-zlib</parameter></term> |
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[4dbd276] | 158 | <listitem> |
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[a882002] | 159 | <para>This tells GCC not to build the copy of Zlib in its |
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| 160 | source tree.</para> |
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[4dbd276] | 161 | </listitem> |
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| 162 | </varlistentry> |
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| 163 | |
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| 164 | <varlistentry> |
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[a43ce31] | 165 | <term><parameter>--with-system-zlib</parameter></term> |
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[4dbd276] | 166 | <listitem> |
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[a43ce31] | 167 | <para>This tells GCC to link to the system-installed zlib instead |
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| 168 | of the one in its source tree.</para> |
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[4dbd276] | 169 | </listitem> |
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| 170 | </varlistentry> |
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| 171 | |
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[3f8be484] | 172 | <varlistentry> |
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| 173 | <term><parameter>--enable-languages=c</parameter></term> |
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| 174 | <listitem> |
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| 175 | <para>This option ensures that only the C compiler is built.</para> |
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| 176 | </listitem> |
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| 177 | </varlistentry> |
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| 178 | |
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[4dbd276] | 179 | <varlistentry> |
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| 180 | <term><parameter>--enable-checking=release</parameter></term> |
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| 181 | <listitem> |
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| 182 | <para>This option selects the complexity of the internal consistency checks and adds error checking within the compiler.</para> |
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| 183 | </listitem> |
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| 184 | </varlistentry> |
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| 185 | |
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[3f8be484] | 186 | </variablelist> |
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| 187 | |
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[d55f00bc] | 188 | <para os="an">Continue with compiling the package:</para> |
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[3f8be484] | 189 | |
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[4651341] | 190 | <screen os="ao"><userinput>make all-gcc all-target-libgcc</userinput></screen> |
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[3f8be484] | 191 | |
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[d755bc7] | 192 | <variablelist os="ap"> |
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| 193 | <title>The meaning of the new make options:</title> |
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| 194 | |
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| 195 | <varlistentry> |
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| 196 | <term><parameter>all-gcc all-target-libgcc</parameter></term> |
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| 197 | <listitem> |
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| 198 | <para>Compiles only the parts of GCC that are needed at this time, |
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| 199 | rather than the full package.</para> |
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| 200 | </listitem> |
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| 201 | </varlistentry> |
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| 202 | |
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| 203 | </variablelist> |
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| 204 | |
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| 205 | <para os="aq">Install the package:</para> |
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[3f8be484] | 206 | |
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[d755bc7] | 207 | <screen os="ar"><userinput>make install-gcc install-target-libgcc</userinput></screen> |
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[3f8be484] | 208 | |
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| 209 | </sect2> |
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| 210 | |
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| 211 | <sect2 role="content"> |
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| 212 | <title/> |
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| 213 | |
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| 214 | <para>Details on this package are located in <xref |
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| 215 | linkend="contents-gcc" role="."/></para> |
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| 216 | |
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| 217 | </sect2> |
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| 218 | |
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| 219 | </sect1> |
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