[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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[3e0fdeb] | 26 | <para os="p1">The following patch contains a number of updates to the |
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[e05c4f0] | 27 | &gcc-version; branch by the GCC developers:</para> |
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| 28 | |
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[3e0fdeb] | 29 | <screen os="p2"><userinput>patch -Np1 -i ../&gcc-branch_update-patch;</userinput></screen> |
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[e05c4f0] | 30 | |
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[3cf4292] | 31 | <para os="aa">Make a couple of essential adjustments to the |
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| 32 | <filename>specs</filename> file to ensure GCC uses our build |
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| 33 | environment:</para> |
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[3f8be484] | 34 | |
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| 35 | <screen os="ab"><userinput>patch -Np1 -i ../&gcc-specs-patch;</userinput></screen> |
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| 36 | |
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[e53465ee] | 37 | <para os="ag">Change the StartFile Spec and Standard Include Dir so that |
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| 38 | GCC looks in <filename class="directory">/tools</filename>:</para> |
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[d04ed61] | 39 | |
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[1e16d91] | 40 | <screen os="ah"><userinput>echo -en '#undef STANDARD_INCLUDE_DIR\n#define STANDARD_INCLUDE_DIR "/tools/include/"\n\n' >> gcc/config/linux.h |
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| 41 | 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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[c1832da] | 42 | 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] | 43 | |
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[121c48a] | 44 | <para os="ai">Now alter <command>gcc</command>'s c preprocessor's default |
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[12d030c] | 45 | include search path to use <filename class="directory">/tools</filename> only:</para> |
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[3f8be484] | 46 | |
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[0b637f1] | 47 | <screen os="aj"><userinput>cp -v gcc/Makefile.in{,.orig} |
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[bc2e3fa] | 48 | sed -e "s@\(^CROSS_SYSTEM_HEADER_DIR =\).*@\1 /tools/include@g" \ |
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[1b274255] | 49 | gcc/Makefile.in.orig > gcc/Makefile.in</userinput></screen> |
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[3f8be484] | 50 | |
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[3cf4292] | 51 | <para os="t1">We will create a dummy <filename>limits.h</filename> so |
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| 52 | the build will not use the one provided by the host distro:</para> |
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[562a0ae] | 53 | |
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[3309623] | 54 | <screen os="t2"><userinput>touch /tools/include/limits.h</userinput></screen> |
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[562a0ae] | 55 | |
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[dabbced] | 56 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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[3f8be484] | 57 | href="../../final-system/common/gcc.xml" |
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| 58 | xpointer="xpointer(//*[@os='f'])"/> |
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| 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='g'])"/> |
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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='h'])"/> |
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| 67 | |
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[88958a8] | 68 | <screen os="al"><userinput>AR=ar LDFLAGS="-Wl,-rpath,/cross-tools/lib" \ |
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[c1832da] | 69 | ../gcc-&gcc-version;/configure --prefix=/cross-tools \ |
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| 70 | --build=${CLFS_HOST} --host=${CLFS_HOST} --target=${CLFS_TARGET} \ |
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| 71 | --with-sysroot=${CLFS} --with-local-prefix=/tools --disable-nls \ |
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[12049296] | 72 | --disable-shared --with-mpfr=/cross-tools --with-gmp=/cross-tools \ |
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| 73 | --with-ppl=/cross-tools --with-cloog=/cross-tools --without-headers \ |
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| 74 | --with-newlib --disable-decimal-float --disable-libgomp \ |
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| 75 | --disable-libmudflap --disable-libssp --disable-threads \ |
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| 76 | --enable-languages=c --disable-multilib --enable-cloog-backend=isl</userinput></screen> |
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[3f8be484] | 77 | |
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[d55f00bc] | 78 | <variablelist os="am"> |
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[d755bc7] | 79 | <title>The meaning of the new configure options:</title> |
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[26b5617] | 80 | |
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| 81 | <varlistentry> |
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| 82 | <term><parameter>--with-sysroot=${CLFS}</parameter></term> |
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| 83 | <listitem> |
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[d755bc7] | 84 | <para>Tells GCC to consider ${CLFS} as the root file system.</para> |
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[26b5617] | 85 | </listitem> |
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| 86 | </varlistentry> |
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| 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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[26b5617] | 99 | <varlistentry> |
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| 100 | <term><parameter>--disable-nls</parameter></term> |
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| 101 | <listitem> |
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| 102 | <para>This disables internationalization as i18n is not needed for the |
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| 103 | cross-compile tools.</para> |
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| 104 | </listitem> |
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| 105 | </varlistentry> |
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| 106 | |
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| 107 | <varlistentry> |
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| 108 | <term><parameter>--without-headers</parameter></term> |
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| 109 | <listitem> |
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| 110 | <para>Disables GCC from using the target's Libc when cross compiling.</para> |
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| 111 | </listitem> |
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| 112 | </varlistentry> |
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| 113 | |
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| 114 | <varlistentry> |
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| 115 | <term><parameter>--with-newlib</parameter></term> |
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| 116 | <listitem> |
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| 117 | <para>Tells GCC that the target libc will use 'newlib'.</para> |
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| 118 | </listitem> |
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| 119 | </varlistentry> |
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| 120 | |
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| 121 | <varlistentry> |
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| 122 | <term><parameter>--disable-decimal-float</parameter></term> |
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| 123 | <listitem> |
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| 124 | <para>Disables support for the C decimal floating point extension.</para> |
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| 125 | </listitem> |
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| 126 | </varlistentry> |
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| 127 | |
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| 128 | <varlistentry> |
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| 129 | <term><parameter>--disable-libgomp</parameter></term> |
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| 130 | <listitem> |
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| 131 | <para>Disables the creation of runtime libraries used by GOMP.</para> |
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| 132 | </listitem> |
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| 133 | </varlistentry> |
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| 134 | |
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| 135 | <varlistentry> |
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| 136 | <term><parameter>--disable-libmudflap</parameter></term> |
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| 137 | <listitem> |
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| 138 | <para>Disables the creation of runtime libaries used by libmudflap.</para> |
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| 139 | </listitem> |
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| 140 | </varlistentry> |
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| 141 | |
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| 142 | <varlistentry> |
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| 143 | <term><parameter>--disable-libssp</parameter></term> |
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| 144 | <listitem> |
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| 145 | <para>Disables the use of Stack Smashing Protection for runtime libraries.</para> |
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| 146 | </listitem> |
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| 147 | </varlistentry> |
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| 148 | |
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[3f8be484] | 149 | <varlistentry> |
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| 150 | <term><parameter>--disable-threads</parameter></term> |
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| 151 | <listitem> |
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[193315c] | 152 | <para>This will prevent GCC from looking for the multi-thread |
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[6d4c909] | 153 | include files, since they haven't been created for this architecture |
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| 154 | yet. GCC will be able to find the multi-thread information after |
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| 155 | the Glibc headers are created.</para> |
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[3f8be484] | 156 | </listitem> |
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| 157 | </varlistentry> |
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| 158 | |
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| 159 | <varlistentry> |
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| 160 | <term><parameter>--enable-languages=c</parameter></term> |
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| 161 | <listitem> |
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| 162 | <para>This option ensures that only the C compiler is built.</para> |
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| 163 | </listitem> |
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| 164 | </varlistentry> |
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| 165 | |
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| 166 | </variablelist> |
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| 167 | |
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[d55f00bc] | 168 | <para os="an">Continue with compiling the package:</para> |
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[3f8be484] | 169 | |
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[4651341] | 170 | <screen os="ao"><userinput>make all-gcc all-target-libgcc</userinput></screen> |
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[3f8be484] | 171 | |
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[d755bc7] | 172 | <variablelist os="ap"> |
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| 173 | <title>The meaning of the new make options:</title> |
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| 174 | |
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| 175 | <varlistentry> |
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| 176 | <term><parameter>all-gcc all-target-libgcc</parameter></term> |
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| 177 | <listitem> |
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| 178 | <para>Compiles only the parts of GCC that are needed at this time, |
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| 179 | rather than the full package.</para> |
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| 180 | </listitem> |
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| 181 | </varlistentry> |
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| 182 | |
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| 183 | </variablelist> |
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| 184 | |
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| 185 | <para os="aq">Install the package:</para> |
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[3f8be484] | 186 | |
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[d755bc7] | 187 | <screen os="ar"><userinput>make install-gcc install-target-libgcc</userinput></screen> |
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[3f8be484] | 188 | |
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| 189 | </sect2> |
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| 190 | |
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| 191 | <sect2 role="content"> |
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| 192 | <title/> |
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| 193 | |
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| 194 | <para>Details on this package are located in <xref |
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| 195 | linkend="contents-gcc" role="."/></para> |
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| 196 | |
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| 197 | </sect2> |
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| 198 | |
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| 199 | </sect1> |
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