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8 <sect1 id="pre-hostreqs" xreflabel="Host System Requirements">
9 <?dbhtml filename="hostreqs.html"?>
11 <title>Host System Requirements</title>
13 <para>Your host system should have the following software with the
14 minimum versions indicated. This should not be an issue for most
15 modern Linux distributions. Also note that many distributions will
16 place software headers into separate packages, often in the form of
17 <quote><package-name>-devel</quote> or
18 <quote><package-name>-dev</quote>. Be sure to install those if
19 your distribution provides them.</para>
21 <para>Earlier versions of the listed software packages may work, but has not
24 <itemizedlist spacing="compact">
27 <para><emphasis role="strong">Bash-3.2</emphasis> (/bin/sh
28 should be a symbolic or hard link to bash)</para>
32 <para><emphasis role="strong">Binutils-2.17</emphasis> (Versions
33 greater than &binutils-version; are not recommended as they have
34 not been tested)</para>
38 <para><emphasis role="strong">Bison-2.3</emphasis> (/usr/bin/yacc
39 should be a link to bison or small script that executes bison)</para>
43 <para><emphasis role="strong">Bzip2-1.0.4</emphasis></para>
47 <para><emphasis role="strong">Coreutils-6.9</emphasis></para>
51 <para><emphasis role="strong">Diffutils-2.8.1</emphasis></para>
55 <para><emphasis role="strong">Findutils-4.2.31</emphasis></para>
59 <para><emphasis role="strong">Gawk-4.0.1</emphasis> (/usr/bin/awk
60 should be a link to gawk)</para>
64 <para><emphasis role="strong">GCC-4.1.2</emphasis> including the C++
65 compiler, <command>g++</command> (Versions greater than &gcc-version; are
66 not recommended as they have not been tested)</para>
68 <note><para>On some distributions, there have been reports that some
69 libraries used by gcc can be in an inconsistent state and that this
70 interferes with building some LFS packages. To check this, look in
71 /usr/lib and possibly /usr/lib64 for libgmp.la, libmpfr.la, and
72 libmpc.la. Either all three should be present or absent, but not only
73 one or two. If the problem exists on your system, either rename or
74 delete the .la files or install the appropriate missing
75 package.</para></note>
80 <para><emphasis role="strong">Glibc-2.5.1</emphasis> (Versions
81 greater than &glibc-version; are not recommended as they have
82 not been tested)</para>
86 <para><emphasis role="strong">Grep-2.5.1a</emphasis></para>
90 <para><emphasis role="strong">Gzip-1.3.12</emphasis></para>
94 <para><emphasis role="strong">Linux Kernel-&min-kernel;</emphasis></para>
96 <para>The reason for the kernel version requirement is that we specify
97 that version when building <application>glibc</application> in Chapter 6
98 at the recommendation of the developers. It is also required by
101 <para>If the host kernel is earlier than &min-kernel; you will need to replace
102 the kernel with a more up to date version. There are two ways
103 you can go about this. First, see if your Linux vendor provides a &min-kernel;
104 or later kernel package. If so, you may wish to install it. If your
105 vendor doesn't offer an acceptable kernel package, or you would prefer not to
106 install it, you can compile a kernel yourself. Instructions for
107 compiling the kernel and configuring the boot loader (assuming the host
108 uses GRUB) are located in <xref linkend="chapter-bootable"/>.</para>
113 <para><emphasis role="strong">M4-1.4.10</emphasis></para>
117 <para><emphasis role="strong">Make-3.81</emphasis></para>
121 <para><emphasis role="strong">Patch-2.5.4</emphasis></para>
125 <para><emphasis role="strong">Perl-5.8.8</emphasis></para>
129 <para><emphasis role="strong">Sed-4.1.5</emphasis></para>
133 <para><emphasis role="strong">Tar-1.18</emphasis></para>
137 <para><emphasis role="strong">Xz-5.0.0</emphasis></para>
142 <para>Note that the symlinks mentioned above are required to build an LFS
143 system using the instructions contained within this book. Symlinks that
144 point to other software (such as dash, mawk, etc.) may work, but are not
145 tested or supported by the LFS development team, and may require either
146 deviation from the instructions or additional patches to some
149 <!-- Use an empty sect2 element to prevent a pdf warning. -->
150 <sect2 id="version-check">
153 <para >To see whether your host system has all the appropriate versions, and
154 the ability to compile programs, run the following:</para>
156 <!-- ANY additional lines in the script cause a pdf rendering problem-->
157 <screen role="nodump"><userinput>cat > version-check.sh << "EOF"
159 # Simple script to list version numbers of critical development tools
162 bash --version | head -n1 | cut -d" " -f2-4
163 echo "/bin/sh -> `readlink -f /bin/sh`"
164 echo -n "Binutils: "; ld --version | head -n1 | cut -d" " -f3-
165 bison --version | head -n1
166 if [ -e /usr/bin/yacc ];
167 then echo "/usr/bin/yacc -> `readlink -f /usr/bin/yacc`";
168 else echo "yacc not found"; fi
170 bzip2 --version 2>&1 < /dev/null | head -n1 | cut -d" " -f1,6-
171 echo -n "Coreutils: "; chown --version | head -n1 | cut -d")" -f2
172 diff --version | head -n1
173 find --version | head -n1
174 gawk --version | head -n1
175 if [ -e /usr/bin/awk ];
176 then echo "/usr/bin/awk -> `readlink -f /usr/bin/awk`";
177 else echo "awk not found"; fi
179 gcc --version | head -n1
180 g++ --version | head -n1
181 ldd --version | head -n1 | cut -d" " -f2- # glibc version
182 grep --version | head -n1
183 gzip --version | head -n1
185 m4 --version | head -n1
186 make --version | head -n1
187 patch --version | head -n1
188 echo Perl `perl -V:version`
189 sed --version | head -n1
190 tar --version | head -n1
191 xz --version | head -n1
193 echo 'main(){}' > dummy.c && g++ -o dummy dummy.c
195 then echo "g++ compilation OK";
196 else echo "g++ compilation failed"; fi
197 rm -f dummy.c dummy</literal>
199 for lib in lib{gmp,mpfr,mpc}.la; do
200 echo $lib: $(if find /usr/lib* -name $lib|
201 grep -q $lib;then :;else echo not;fi) found
203 unset lib</literal>-->
206 bash version-check.sh</userinput></screen>
208 <para>Also check for some library consistency:</para>
210 <screen role="nodump"><userinput>cat > library-check.sh << "EOF"
212 for lib in lib{gmp,mpfr,mpc}.la; do
213 echo $lib: $(if find /usr/lib* -name $lib|
214 grep -q $lib;then :;else echo not;fi) found
219 bash library-check.sh</userinput></screen>
221 <para>The files identified by this script should be all present
222 or all absent, but not only one or two present.</para>