[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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[093b0e8] | 8 | <sect1 id="ch-cross-tools-eglibc-headers" role="wrap"> |
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| 9 | <?dbhtml filename="eglibc-headers.html"?> |
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[3f8be484] | 10 | |
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[093b0e8] | 11 | <title>EGLIBC-&eglibc-version; Headers</title> |
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[3f8be484] | 12 | |
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[093b0e8] | 13 | <indexterm zone="ch-cross-tools-eglibc-headers"> |
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| 14 | <primary sortas="a-EGLIBC">EGLIBC</primary> |
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[3f8be484] | 15 | <secondary>cross tools, headers</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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[093b0e8] | 19 | href="../../final-system/common/eglibc.xml" |
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[cf66ceae] | 20 | xpointer="xpointer(//*[@role='package'])"/> |
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[3f8be484] | 21 | |
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| 22 | <sect2 role="installation"> |
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[093b0e8] | 23 | <title>Installation of EGLIBC Headers</title> |
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[3f8be484] | 24 | |
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[54c2a21] | 25 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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| 26 | href="../common/eglibc.xml" |
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| 27 | xpointer="xpointer(//*[@os='da'])"/> |
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| 28 | |
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| 29 | |
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| 30 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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| 31 | href="eglibc.xml" |
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| 32 | xpointer="xpointer(//*[@os='g1'])"/> |
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| 33 | |
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| 34 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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| 35 | href="../../final-system/mips/eglibc.xml" |
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| 36 | xpointer="xpointer(//*[@os='g2'])"/> |
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| 37 | |
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| 38 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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| 39 | href="../common/eglibc.xml" |
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| 40 | xpointer="xpointer(//*[@os='db'])"/> |
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| 41 | |
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| 42 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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| 43 | href="../common/eglibc.xml" |
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| 44 | xpointer="xpointer(//*[@os='dc'])"/> |
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| 45 | |
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[093b0e8] | 46 | <para os="s1">EGLIBC's <filename>configure</filename> script checks the |
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| 47 | version of GCC, and will fail if it's less than 3.4. The next EGLIBC build |
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[9f5a80a] | 48 | will use the GCC that will be installed into |
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| 49 | <filename class="directory">/cross-tools</filename> in the next step. |
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[093b0e8] | 50 | However, in this step only the EGLIBC headers are being installed - no |
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[9f5a80a] | 51 | compiling is taking place - so the GCC version isn't important. The |
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| 52 | following sed removes the dependency of GCC 3.4.x:</para> |
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[d018b81] | 53 | |
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[661d1a4] | 54 | <screen os="s2"><userinput>cp -v configure{,.orig} |
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[1b274255] | 55 | sed -e 's/3.4/3.[0-9]/g' configure.orig > configure</userinput></screen> |
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[3f8be484] | 56 | |
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[dabbced] | 57 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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[093b0e8] | 58 | href="../../final-system/common/eglibc.xml" |
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[3f8be484] | 59 | xpointer="xpointer(//*[@os='e'])"/> |
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| 60 | |
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[dabbced] | 61 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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[093b0e8] | 62 | href="../../final-system/common/eglibc.xml" |
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[3f8be484] | 63 | xpointer="xpointer(//*[@os='f'])"/> |
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| 64 | |
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[dabbced] | 65 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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[093b0e8] | 66 | href="../common/eglibc.xml" |
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[c4d5e29] | 67 | xpointer="xpointer(//*[@os='dd'])"/> |
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| 68 | |
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[c768003] | 69 | <screen os="de"><userinput>cat > config.cache << "EOF" |
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| 70 | libc_cv_forced_unwind=yes |
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| 71 | libc_cv_c_cleanup=yes |
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| 72 | libc_cv_mlong_double_128=yes |
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| 73 | libc_cv_alpha_tls=yes |
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[bd01f75] | 74 | libc_cv_gnu89_inline=yes |
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[5e4b3b4] | 75 | libc_cv_ssp=no |
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[c768003] | 76 | EOF</userinput></screen> |
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[f0ed7ed] | 77 | |
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[dabbced] | 78 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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[093b0e8] | 79 | href="../../final-system/common/eglibc.xml" |
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[3f8be484] | 80 | xpointer="xpointer(//*[@os='g'])"/> |
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| 81 | |
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[093b0e8] | 82 | <screen os="s3"><userinput>CC=gcc ../eglibc-&eglibc-version;/configure --prefix=/tools \ |
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[07114c98] | 83 | --host=${CLFS_TARGET} --build=${CLFS_HOST} \ |
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[65ab9ce] | 84 | --disable-sanity-checks --enable-kernel=2.6.32 \ |
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[bc2e3fa] | 85 | --with-headers=/tools/include --cache-file=config.cache \ |
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| 86 | --with-binutils=/cross-tools/${CLFS_TARGET}/bin</userinput></screen> |
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[7482ad3] | 87 | |
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[040521bc] | 88 | <note os="e1"> |
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[7482ad3] | 89 | <para><emphasis>Any</emphasis> error message you see about nptl at this point |
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| 90 | can safely be ignored.</para> |
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[040521bc] | 91 | </note> |
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[7482ad3] | 92 | |
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| 93 | <variablelist os="ca"> |
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| 94 | <title>The meaning of the configure options:</title> |
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[d018b81] | 95 | |
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[7482ad3] | 96 | <varlistentry os="ca1"> |
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| 97 | <term><parameter>CC=gcc</parameter></term> |
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| 98 | <listitem> |
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[093b0e8] | 99 | <para>Tells EGLIBC to use the host's GCC compiler.</para> |
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[7482ad3] | 100 | </listitem> |
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| 101 | </varlistentry> |
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[d018b81] | 102 | |
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[7482ad3] | 103 | <varlistentry os="ca2"> |
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| 104 | <term><parameter>--prefix=/tools</parameter></term> |
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| 105 | <listitem> |
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| 106 | <para>This tells the configure script to prepare to install the |
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[e3196bd] | 107 | package in the <filename class="directory">/tools</filename> |
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| 108 | directory.</para> |
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[7482ad3] | 109 | </listitem> |
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| 110 | </varlistentry> |
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[d018b81] | 111 | |
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[7482ad3] | 112 | <varlistentry os="ca3"> |
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[07114c98] | 113 | <term><parameter>--build=${CLFS_HOST}</parameter></term> |
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[7482ad3] | 114 | <listitem> |
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| 115 | <para>When used with --host, this creates a cross-architecture |
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[3c06a53] | 116 | executable that creates files for ${CLFS_TARGET} but runs on ${CLFS_HOST}.</para> |
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[7482ad3] | 117 | </listitem> |
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| 118 | </varlistentry> |
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[d018b81] | 119 | |
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[7482ad3] | 120 | <varlistentry os="ca4"> |
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[07114c98] | 121 | <term><parameter>--host=${CLFS_TARGET}</parameter></term> |
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[7482ad3] | 122 | <listitem> |
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| 123 | <para>When used with --build, this creates a cross-architecture |
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[3c06a53] | 124 | executable that creates files for ${CLFS_TARGET} but runs on ${CLFS_HOST}.</para> |
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[7482ad3] | 125 | </listitem> |
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| 126 | </varlistentry> |
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[d018b81] | 127 | |
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[7482ad3] | 128 | <varlistentry os="ca5"> |
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| 129 | <term><parameter>--disable-sanity-checks</parameter></term> |
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| 130 | <listitem> |
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| 131 | <para>This switch disables any checks that are in place.</para> |
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| 132 | </listitem> |
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| 133 | </varlistentry> |
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[d018b81] | 134 | |
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[7482ad3] | 135 | <varlistentry os="ca6"> |
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[65ab9ce] | 136 | <term><parameter>--enable-kernel=2.6.32</parameter></term> |
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[7482ad3] | 137 | <listitem> |
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[093b0e8] | 138 | <para>This tells EGLIBC to compile the library with support |
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[65ab9ce] | 139 | for 2.6.32 and later Linux kernels.</para> |
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[7482ad3] | 140 | </listitem> |
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| 141 | </varlistentry> |
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[d018b81] | 142 | |
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[7482ad3] | 143 | <varlistentry os="ca7"> |
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[bc2e3fa] | 144 | <term><parameter>--with-headers=/tools/include</parameter></term> |
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[7482ad3] | 145 | <listitem> |
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[093b0e8] | 146 | <para>This tells EGLIBC to compile itself against the headers |
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[bc2e3fa] | 147 | recently installed to the <filename class="directory">/tools</filename> |
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[7482ad3] | 148 | directory, so that it knows exactly what features the kernel has |
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| 149 | and can optimize itself accordingly.</para> |
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| 150 | </listitem> |
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| 151 | </varlistentry> |
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[d018b81] | 152 | |
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[7482ad3] | 153 | <varlistentry os="ca8"> |
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[bc2e3fa] | 154 | <term><parameter>--with-binutils=/cross-tools/${CLFS_TARGET}/bin</parameter></term> |
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[7482ad3] | 155 | <listitem> |
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[093b0e8] | 156 | <para>This tells EGLIBC to use the Binutils for our specific target architecture.</para> |
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[7482ad3] | 157 | </listitem> |
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| 158 | </varlistentry> |
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[d018b81] | 159 | |
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[7482ad3] | 160 | </variablelist> |
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[d018b81] | 161 | |
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[7482ad3] | 162 | <para os="cb">Now, install the headers:</para> |
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| 163 | |
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| 164 | <screen os="cd"><userinput>make install-headers</userinput></screen> |
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| 165 | |
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[42754a9] | 166 | <para os="ce">Some files aren't installed by the above command, so |
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| 167 | we will copy the additional header files we need.</para> |
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[7482ad3] | 168 | |
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[d018b81] | 169 | <para os="cf">First we will copy a common file over to <filename |
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[bc2e3fa] | 170 | class="directory">/tools/include</filename>:</para> |
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[7482ad3] | 171 | |
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[bc2e3fa] | 172 | <screen os="cg"><userinput>install -dv /tools/include/bits |
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| 173 | cp -v bits/stdio_lim.h /tools/include/bits</userinput></screen> |
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[7482ad3] | 174 | |
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| 175 | <para os="ch">Now we will create a blank stub file:</para> |
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| 176 | |
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[bc2e3fa] | 177 | <screen os="ci"><userinput>touch /tools/include/gnu/stubs.h</userinput></screen> |
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[7482ad3] | 178 | |
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[42754a9] | 179 | <para os="cj">Another header is needed for NPTL:</para> |
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[d018b81] | 180 | |
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[093b0e8] | 181 | <screen><userinput>cp -v ../eglibc-&eglibc-version;/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h \ |
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[d018b81] | 182 | /tools/include/bits/</userinput></screen> |
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[3f8be484] | 183 | |
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| 184 | </sect2> |
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| 185 | |
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| 186 | <sect2 role="content"> |
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| 187 | <title/> |
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| 188 | |
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| 189 | <para>Details on this package are located in <xref |
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[093b0e8] | 190 | linkend="contents-eglibc" role="."/></para> |
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[3f8be484] | 191 | |
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| 192 | </sect2> |
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| 193 | |
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| 194 | </sect1> |
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