1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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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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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 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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19 | href="../../final-system/common/gcc.xml" |
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20 | xpointer="xpointer(//*[@role='package'])"/> |
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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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26 | <para os="e">Here we will compile GCC, as a cross-compiler that will create |
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27 | executables for our target architecture, statically so that it will not |
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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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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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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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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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49 | <para os="ag">Change the StartFile Spec so that GCC looks in |
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50 | <filename class="directory">/tools</filename>:</para> |
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51 | |
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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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54 | |
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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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57 | |
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58 | <screen os="t2"><userinput>touch /tools/include/limits.h</userinput></screen> |
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59 | |
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60 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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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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64 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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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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68 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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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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72 | <screen os="al"><userinput>AR=ar LDFLAGS="-Wl,-rpath,/cross-tools/lib" \ |
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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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84 | |
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85 | <variablelist os="am"> |
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86 | <title>The meaning of the new configure options:</title> |
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87 | |
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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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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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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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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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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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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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139 | <term><parameter>--disable-lib*</parameter></term> |
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140 | <listitem> |
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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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143 | </listitem> |
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144 | </varlistentry> |
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145 | |
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146 | <varlistentry> |
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147 | <term><parameter>--disable-threads</parameter></term> |
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148 | <listitem> |
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149 | <para>This will prevent GCC from looking for the multi-thread |
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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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153 | </listitem> |
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154 | </varlistentry> |
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155 | |
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156 | <varlistentry> |
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157 | <term><parameter>--disable-target-zlib</parameter></term> |
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158 | <listitem> |
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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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161 | </listitem> |
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162 | </varlistentry> |
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163 | |
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164 | <varlistentry> |
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165 | <term><parameter>--with-system-zlib</parameter></term> |
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166 | <listitem> |
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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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169 | </listitem> |
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170 | </varlistentry> |
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171 | |
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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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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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186 | </variablelist> |
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187 | |
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188 | <para os="an">Continue with compiling the package:</para> |
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189 | |
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190 | <screen os="ao"><userinput>make all-gcc all-target-libgcc</userinput></screen> |
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191 | |
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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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206 | |
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207 | <screen os="ar"><userinput>make install-gcc install-target-libgcc</userinput></screen> |
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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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