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 | <!ENTITY gcc-download-http "http://ftp.gnu.org/gnu/gcc/gcc-&gcc-version;/gcc-&gcc-version;.tar.bz2">
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8 | <!ENTITY gcc-download-ftp "ftp://ftp.gnu.org/gnu/gcc/gcc-&gcc-version;/gcc-&gcc-version;.tar.bz2">
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9 | <!ENTITY gcc-md5sum "fddf71348546af523353bd43d34919c1">
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10 | <!ENTITY gcc-size "86 MB">
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11 | <!ENTITY gcc-ada-buildsize "4.8 GB (0.7 GB added if GNAT install dir is not removed)">
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12 | <!ENTITY gcc-ada-time "133 SBU">
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13 |
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14 | <!ENTITY gnat-download-http "https://libre.adacore.com/download/">
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15 | <!ENTITY gnat-64-download-http "http://mirrors.cdn.adacore.com/art/7427735035ecc98968ebfcee17494161b0de28ef">
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16 | <!ENTITY gnat-64-md5sum "c0863ed75109b5aa737becfd5a6ec038">
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17 | <!ENTITY gnat-64-size "225 MB">
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18 | <!ENTITY gnat-32-download-http "http://mirrors.cdn.adacore.com/art/3fc05fc61cbc7ab4f291ed19ea4cb269fffd17bd">
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19 | <!ENTITY gnat-32-md5sum "69423c7ad8d9759377d4fff71a78992d">
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20 | <!ENTITY gnat-32-size "222 MB">
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21 | ]>
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22 |
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23 | <sect1 id="gcc-ada" xreflabel="GCC-Ada-&gcc-version;">
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24 | <?dbhtml filename="gcc-ada.html" ?>
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25 |
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26 | <sect1info>
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27 | <othername>$LastChangedBy$</othername>
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28 | <date>$Date$</date>
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29 | </sect1info>
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30 |
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31 | <title>GCC-Ada-&gcc-version;</title>
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32 |
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33 | <indexterm zone="gcc-ada">
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34 | <primary sortas="a-gcc-4-0">GCC-Ada&gcc-version;</primary>
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35 | </indexterm>
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36 |
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37 | <sect2 role="package">
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38 | <title>Introduction to the GCC Ada compiler</title>
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39 |
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40 | <para>Ada is a modern programming language designed for large, long-lived
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41 | applications — and embedded systems in particular — where
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42 | reliability and efficiency are essential. It has a set of unique technical
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43 | features that make it highly effective for use in large, complex and
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44 | safety-critical projects.</para>
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45 |
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46 | <para>The compiler and associated tools on this page are known as the
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47 | <application>GNAT</application> technology, developped by the Adacore
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48 | company, using the <application>GCC</application> backend. Since
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49 | parts of the Ada compiler are written in Ada, there is a circular
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50 | dependency on an Ada compiler. The instructions below first install
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51 | a binary compiler.</para>
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52 |
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53 | <!-- &lfs75_checked; -->
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54 |
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55 | <caution>
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56 | <para>Using the instructions on this page will have the effect that
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57 | the C and C++ compiler and libraries will be reinstalled, overwriting
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58 | the ones on your system. This may lead to some issues. Please read the
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59 | notes and caution on the <xref linkend="gcc"/> page.</para>
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60 | </caution>
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61 |
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62 | <bridgehead renderas="sect3">Package Information</bridgehead>
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63 | <itemizedlist spacing="compact">
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64 | <listitem>
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65 | <para>Download (HTTP): <ulink url="&gcc-download-http;"/></para>
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66 | </listitem>
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67 | <listitem>
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68 | <para>Download (FTP): <ulink url="&gcc-download-ftp;"/></para>
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69 | </listitem>
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70 | <listitem>
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71 | <para>Download MD5 sum: &gcc-md5sum;</para>
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72 | </listitem>
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73 | <listitem>
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74 | <para>Download size: &gcc-size;</para>
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75 | </listitem>
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76 | <listitem>
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77 | <para>Estimated disk space required: &gcc-ada-buildsize;</para>
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78 | </listitem>
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79 | <listitem>
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80 | <para>Estimated build time: &gcc-ada-time;</para>
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81 | </listitem>
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82 | </itemizedlist>
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83 |
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84 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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85 | <note>
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86 | <para>You will need to install <application>GNAT</application>
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87 | temporarily to satisfy the circular dependency. You may point your
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88 | browser to the <ulink url="&gnat-download-http;">AdaCore download
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89 | page</ulink>, choose your platform and 2014, then select the file
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90 | to download. Alternatively, direct links to the 64 bit and 32 bit
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91 | linux versions are given below.</para>
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92 | </note>
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93 |
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94 | <itemizedlist spacing="compact">
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95 | <listitem>
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96 | <para>
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97 | GNAT 64 bit binary: <ulink url="&gnat-64-download-http;"/>
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98 | </para>
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99 | </listitem>
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100 | <listitem>
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101 | <para>
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102 | GNAT 64 bit MD5 sum: &gnat-64-md5sum;
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103 | </para>
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104 | </listitem>
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105 | <listitem>
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106 | <para>
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107 | GNAT 64 bit size: &gnat-64-size;
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108 | </para>
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109 | </listitem>
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110 | <listitem>
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111 | <para>
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112 | GNAT 32 bit binary: <ulink url="&gnat-32-download-http;"/>
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113 | </para>
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114 | </listitem>
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115 | <listitem>
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116 | <para>
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117 | GNAT 32 bit MD5 sum: &gnat-32-md5sum;
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118 | </para>
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119 | </listitem>
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120 | <listitem>
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121 | <para>
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122 | GNAT 32 bit size: &gnat-32-size;
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123 | </para>
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124 | </listitem>
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125 | <!-- <listitem>
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126 | <para>
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127 | Required patch:
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128 | <ulink url="&patch-root;/gcc-&gcc-version;-upstream_fixes-1.patch"/>
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129 | </para>
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130 | </listitem> -->
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131 | </itemizedlist>
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132 |
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133 | <bridgehead renderas="sect3">GCC Ada Dependencies</bridgehead>
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134 |
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135 | <bridgehead renderas="sect4">Recommended</bridgehead>
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136 | <para role="recommended">
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137 | <xref linkend="dejagnu"/>, for tests
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138 | </para>
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139 |
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140 | <para condition="html" role="usernotes">User Notes:
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141 | <ulink url="&blfs-wiki;/gcc-ada"/></para>
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142 |
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143 | </sect2>
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144 |
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145 | <sect2 role="installation">
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146 | <title>Installation of the GNAT binary</title>
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147 |
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148 | <para>Before unpacking and changing into the GCC source directory, first
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149 | unpack the <application>GNAT</application> tarball, and change to the
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150 | GNAT directory. Then, install the <application>GNAT</application> binary
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151 | by running the following command as the
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152 | <systemitem class="username">root</systemitem> user:</para>
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153 |
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154 | <screen role="root"><userinput>make ins-all prefix=/opt/gnat</userinput></screen>
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155 |
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156 | <para>The <application>GNAT</application> compiler can be invoked by
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157 | executing the <command>gcc</command> binary installed in <filename
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158 | class="directory">/opt/gnat/bin</filename>.</para>
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159 |
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160 | <para>You may now remove the <application>GNAT</application>
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161 | source directory if desired.</para>
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162 |
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163 | <para>Prepare to compile <application>GCC</application> by placing the
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164 | <application>GNAT</application> version of <command>gcc</command> at the
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165 | beginning of the <envar>PATH</envar> variable by using the following
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166 | commands:</para>
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167 |
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168 | <screen><userinput>PATH_HOLD=$PATH &&
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169 | export PATH=/opt/gnat/bin:$PATH_HOLD</userinput></screen>
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170 |
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171 | <para>Doing so has the drawback that the <application>GCC</application>
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172 | and <application>Binutils</application> executables are taken
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173 | from the just installed <application>GNAT</application> package, but the
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174 | versions of those executables are outdated compared to those installed in
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175 | LFS. This is not important for the <application>GCC</application> compilers,
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176 | since they recompile themselves during the bootstrap process. On the other
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177 | hand, the outdated <command>ld</command> and <command>as</command> tools
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178 | are used all along. In order to use the LFS tools, issue as the
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179 | <systemitem class="username">root</systemitem> user:</para>
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180 |
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181 | <screen role="root"><userinput>find /opt/gnat -name ld -exec mv -v {} {}.old \;
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182 | find /opt/gnat -name as -exec mv -v {} {}.old \;</userinput></screen>
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183 |
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184 | </sect2>
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185 |
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186 | <sect2 role="installation">
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187 | <title>Installation of GCC Ada</title>
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188 |
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189 | <para>Install <application>GCC Ada</application> by running the
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190 | following commands:</para>
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191 |
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192 | <screen><userinput><!--patch -Np1 -i ../gcc-&gcc-version;-upstream_fixes-1.patch &&
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193 | -->mkdir ../gcc-build &&
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194 | cd ../gcc-build &&
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195 |
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196 | ../gcc-&gcc-version;/configure \
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197 | --prefix=/usr \
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198 | --libdir=/usr/lib \
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199 | --enable-shared \
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200 | --enable-threads=posix \
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201 | --enable-__cxa_atexit \
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202 | --enable-clocale=gnu \
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203 | --disable-multilib \
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204 | --with-system-zlib \
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205 | --enable-languages=ada &&
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206 | make</userinput></screen>
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207 |
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208 | <para>If you have installed additional packages such as
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209 | <application>Valgrind</application> and <application>GDB</application>,
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210 | the <application>GCC</application> part of the testsuite will run more
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211 | tests than in LFS. Some of those will report FAIL and others XPASS
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212 | (pass when expected to FAIL). To run the tests, issue:</para>
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213 |
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214 | <screen><userinput>ulimit -s 32768 &&
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215 | make -k check</userinput></screen>
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216 | <!-- The command above may error out, so using && may prevent the summary
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217 | to be run. -->
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218 |
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219 | <para>The tests are very long, and the results may be hard to find in the
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220 | logs, specially if you use parallel jobs with make. You can get a summary
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221 | of the tests with:</para>
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222 |
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223 | <screen><userinput>../gcc-&gcc-version;/contrib/test_summary</userinput></screen>
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224 |
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225 | <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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226 |
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227 | <screen role="root"><userinput>make install &&
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228 |
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229 | mkdir -pv /usr/share/gdb/auto-load/usr/lib &&
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230 | mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib &&
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231 |
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232 | chown -v -R root:root \
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233 | /usr/lib/gcc/*linux-gnu/&gcc-version;/include{,-fixed} \
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234 | /usr/lib/gcc/*linux-gnu/&gcc-version;/ada{lib,include}</userinput></screen>
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235 |
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236 | <para>You should now remove the <application>GNAT</application>
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237 | installation and perform other cleanups:</para>
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238 |
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239 | <screen><userinput>rm -rf /opt/gnat &&
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240 | export PATH=$PATH_HOLD &&
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241 | unset PATH_HOLD</userinput></screen>
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242 |
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243 | </sect2>
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244 |
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245 | <sect2 role="commands">
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246 | <title>Command Explanations</title>
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247 |
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248 | <para><command>mkdir ../gcc-build; cd ../gcc-build</command>: The
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249 | <application>GCC</application> documentation recommends
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250 | building the package in a dedicated build directory.</para>
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251 |
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252 | <para><parameter>--enable-shared --enable-threads=posix
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253 | --enable-__cxa_atexit</parameter>: These parameters are required to build
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254 | the <application>C++</application> libraries to published standards.</para>
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255 |
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256 | <para><parameter>--enable-clocale=gnu</parameter>: This parameter is a
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257 | failsafe for incomplete locale data.</para>
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258 |
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259 | <para><parameter>--disable-multilib</parameter>: This parameter ensures
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260 | that files are created for the specific architecture of your computer.</para>
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261 |
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262 | <para>
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263 | <parameter>--with-system-zlib</parameter>: Uses the system
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264 | <application>zlib</application> instead of the bundled one.
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265 | <application>zlib</application> is used for compressing
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266 | and uncompressing <application>GCC</application>'s intermediate
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267 | language in LTO (Link Time Optimization) object files.
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268 | </para>
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269 |
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270 | <para>
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271 | <parameter>--enable-languages=ada</parameter>: Instructs the build system
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272 | to build the Ada tools and compiler. It is unavoidable that the
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273 | <application>C</application> and <application>C++</application>
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274 | compilers be built too.
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275 | </para>
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276 |
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277 | <para><command>ulimit -s 32768</command>: This command prevents several
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278 | tests from running out of stack space.</para>
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279 |
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280 | <para><command>make -k check</command>: This command runs the test suite
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281 | without stopping if any errors are encountered.</para>
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282 |
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283 | <para><command>../gcc-&gcc-version;/contrib/test_summary</command>: This
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284 | command will produce a summary of the test suite results. You can append
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285 | <command>| grep -A7 Summ</command> to the command to produce an even more
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286 | condensed version of the summary. You may also wish to redirect the output
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287 | to a file for review and comparison later on.</para>
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288 |
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289 | <para><command>chown -v -R root:root /usr/lib/gcc/*linux-gnu/...</command>:
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290 | If the package is built by a user other than root, the ownership of the
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291 | installed <filename class="directory">include</filename> and
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292 | <filename class="directory">adalib</filename> directories (and their
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293 | contents) will be incorrect. These commands change the ownership to the
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294 | <systemitem class="username">root</systemitem> user and group.</para>
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295 |
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296 | </sect2>
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297 |
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298 | <sect2 role="content">
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299 | <title>Contents</title>
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300 |
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301 | <segmentedlist>
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302 | <segtitle>Installed Programs</segtitle>
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303 | <segtitle>Installed Libraries</segtitle>
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304 | <segtitle>Installed Directories</segtitle>
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305 |
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306 | <seglistitem>
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307 | <seg>
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308 | gnat, gnatbind, gnatchop, gnatclean, gnatfind, gnatkr,
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309 | gnatlink, gnatls, gnatmake, gnatname, gnatprep, gnatxref,
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310 | and a run-time executable, gnat1, in <filename class="directory">
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311 | /usr/libexec/<arch-triplet>/&gcc-version;</filename>
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312 | </seg>
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313 | <seg>
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314 | libgnat.{so,a}, libgnarl.{so,a} in <filename class="directory">
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315 | /usr/lib/gcc/<arch-triplet>/&gcc-version;/adalib</filename>
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316 | </seg>
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317 | <seg>
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318 | /usr/lib/gcc/<arch-triplet>/&gcc-version;/ada{include,lib}
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319 | </seg>
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320 | </seglistitem>
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321 | </segmentedlist>
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322 |
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323 | <para>Only the Ada specific files are listed here. Others can be found at
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324 | <ulink url="&lfs-root;/chapter06/gcc.html#contents-gcc"/> as they were
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325 | initially installed during the building of LFS.</para>
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326 |
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327 | <variablelist>
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328 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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329 | <?dbfo list-presentation="list"?>
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330 | <?dbhtml list-presentation="table"?>
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331 |
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332 | <varlistentry id="gnat">
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333 | <term><command>gnat</command></term>
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334 | <listitem>
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335 | <para>is a wrapper that accepts a number of commands and calls
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336 | the corresponding tool from the list below.</para>
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337 | <indexterm zone="gcc-ada gnat">
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338 | <primary sortas="b-gnat">gnat</primary>
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339 | </indexterm>
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340 | </listitem>
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341 | </varlistentry>
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342 |
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343 | <varlistentry id="gnatbind">
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344 | <term><command>gnatbind</command></term>
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345 | <listitem>
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346 | <para>is used to bind compiled objects.</para>
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347 | <indexterm zone="gcc-ada gnatbind">
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348 | <primary sortas="b-gnatbind">gnatbind</primary>
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349 | </indexterm>
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350 | </listitem>
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351 | </varlistentry>
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352 |
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353 | <varlistentry id="gnatchop">
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354 | <term><command>gnatchop</command></term>
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355 | <listitem>
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356 | <para>is useful for renaming files to meet the standard
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357 | <application>Ada</application> default file naming conventions.</para>
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358 | <indexterm zone="gcc-ada gnatchop">
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359 | <primary sortas="b-gnatchop">gnatchop</primary>
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360 | </indexterm>
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361 | </listitem>
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362 | </varlistentry>
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363 |
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364 | <varlistentry id="gnatclean">
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365 | <term><command>gnatclean</command></term>
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366 | <listitem>
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367 | <para>is used to remove files associated with a
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368 | <application>GNAT</application> project.</para>
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369 | <indexterm zone="gcc-ada gnatclean">
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370 | <primary sortas="b-gnatclean">gnatclean</primary>
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371 | </indexterm>
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372 | </listitem>
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373 | </varlistentry>
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374 |
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375 | <varlistentry id="gnatfind">
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376 | <term><command>gnatfind</command></term>
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377 | <listitem>
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378 | <para> is intended for locating definition and/or references to
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379 | specified entities in a <application>GNAT</application> project.</para>
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380 | <indexterm zone="gcc-ada gnatfind">
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381 | <primary sortas="b-gnatfind">gnatfind</primary>
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382 | </indexterm>
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383 | </listitem>
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384 | </varlistentry>
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385 |
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386 | <varlistentry id="gnatkr">
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387 | <term><command>gnatkr</command></term>
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388 | <listitem>
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389 | <para>is used to determine the crunched name for a given file, when
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390 | crunched to a specified maximum length.</para>
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391 | <indexterm zone="gcc-ada gnatkr">
|
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392 | <primary sortas="b-gnatkr">gnatkr</primary>
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393 | </indexterm>
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394 | </listitem>
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395 | </varlistentry>
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396 |
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397 | <varlistentry id="gnatlink">
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398 | <term><command>gnatlink</command></term>
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399 | <listitem>
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400 | <para>is used to link programs and build an executable file.</para>
|
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401 | <indexterm zone="gcc-ada gnatlink">
|
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402 | <primary sortas="b-gnatlink">gnatlink</primary>
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403 | </indexterm>
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404 | </listitem>
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405 | </varlistentry>
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406 |
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407 | <varlistentry id="gnatls">
|
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408 | <term><command>gnatls</command></term>
|
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409 | <listitem>
|
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410 | <para>is the compiled unit browser.</para>
|
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411 | <indexterm zone="gcc-ada gnatls">
|
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412 | <primary sortas="b-gnatls">gnatls</primary>
|
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413 | </indexterm>
|
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414 | </listitem>
|
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415 | </varlistentry>
|
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416 |
|
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417 | <varlistentry id="gnatmake">
|
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418 | <term><command>gnatmake</command></term>
|
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419 | <listitem>
|
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420 | <para>is the <application>Ada</application> compiler, which performs
|
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421 | compilaton, binding and linking.</para>
|
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422 | <indexterm zone="gcc-ada gnatmake">
|
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423 | <primary sortas="b-gnatmake">gnatmake</primary>
|
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424 | </indexterm>
|
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425 | </listitem>
|
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426 | </varlistentry>
|
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427 |
|
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428 | <varlistentry id="gnatname">
|
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429 | <term><command>gnatname</command></term>
|
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430 | <listitem>
|
---|
431 | <para>will list the files associated with a
|
---|
432 | <application>GNAT</application> project.</para>
|
---|
433 | <indexterm zone="gcc-ada gnatname">
|
---|
434 | <primary sortas="b-gnatname">gnatname</primary>
|
---|
435 | </indexterm>
|
---|
436 | </listitem>
|
---|
437 | </varlistentry>
|
---|
438 |
|
---|
439 | <varlistentry id="gnatprep">
|
---|
440 | <term><command>gnatprep</command></term>
|
---|
441 | <listitem>
|
---|
442 | <para>is the <application>GNAT</application> external
|
---|
443 | preprocessor.</para>
|
---|
444 | <indexterm zone="gcc-ada gnatprep">
|
---|
445 | <primary sortas="b-gnatprep">gnatprep</primary>
|
---|
446 | </indexterm>
|
---|
447 | </listitem>
|
---|
448 | </varlistentry>
|
---|
449 |
|
---|
450 | <varlistentry id="gnatxref">
|
---|
451 | <term><command>gnatxref</command></term>
|
---|
452 | <listitem>
|
---|
453 | <para>is similar to <command>gnatfind</command>, but generates
|
---|
454 | a full report of all cross-references.</para>
|
---|
455 | <indexterm zone="gcc-ada gnatxref">
|
---|
456 | <primary sortas="b-gnatxref">gnatxref</primary>
|
---|
457 | </indexterm>
|
---|
458 | </listitem>
|
---|
459 | </varlistentry>
|
---|
460 |
|
---|
461 | </variablelist>
|
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462 |
|
---|
463 | </sect2>
|
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464 |
|
---|
465 | </sect1>
|
---|