1 <sect1 id="ch-tools-binutils-pass1">
2 <title>Installing Binutils-&binutils-version; - Pass 1</title>
3 <?dbhtml filename="binutils-pass1.html" dir="chapter05"?>
5 <screen>&buildtime; &binutils-time-tools-pass1;
6 &diskspace; &binutils-compsize-tools-pass1;</screen>
11 <sect2><title> </title><para> </para></sect2>
14 <title>Installation of Binutils</title>
16 <para>It is important that Binutils be the first package to get compiled,
17 because both Glibc and GCC perform various tests on the available linker and
18 assembler to determine which of their own features to enable.</para>
20 <para>This package is known to behave badly when you have changed its default
21 optimization flags (including the -march and -mcpu options). Therefore, if
22 you have defined any environment variables that override default
23 optimizations, such as CFLAGS and CXXFLAGS, we recommend unsetting or
24 modifying them when building Binutils.</para>
26 <para>The Binutils documentation recommends building Binutils outside of the
27 source directory in a dedicated build directory:</para>
29 <screen><userinput>mkdir ../binutils-build
30 cd ../binutils-build</userinput></screen>
32 <note><para>If you want the SBU values listed in the rest of the book to be of
33 any use, you will have to measure the time it takes to build this package. To
34 achieve this easily, you could do something like:
35 <userinput>time { ./configure ... && ... && ... && make install; }</userinput>.</para></note>
37 <para>Now prepare Binutils for compilation:</para>
39 <screen><userinput>../&binutils-dir;/configure --prefix=/tools --disable-nls</userinput></screen>
41 <para>The meaning of the configure options:</para>
44 <listitem><para><userinput>--prefix=/tools</userinput>: This tells the
45 configure script to prepare to install the Binutils programs in the
46 <filename>/tools</filename> directory.</para></listitem>
48 <listitem><para><userinput>--disable-nls</userinput>: This disables
49 internationalization (a word often shortened to i18n). We don't need this
50 for our static programs and <emphasis>nls</emphasis> often causes problems
51 when linking statically.</para></listitem>
54 <para>Continue with compiling the package:</para>
56 <screen><userinput>make configure-host
57 make LDFLAGS="-all-static"</userinput></screen>
59 <para>The meaning of the make parameters:</para>
62 <listitem><para><userinput>configure-host</userinput>: This forces all the
63 subdirectories to be configured immediately. A statically linked build will
64 fail without it. We therefore use this option to work around the
65 problem.</para></listitem>
67 <listitem><para><userinput>LDFLAGS="-all-static"</userinput>: This tells the
68 linker that all the Binutils programs should be linked statically. However,
69 strictly speaking, <emphasis>"-all-static"</emphasis> is first passed to the
70 <command>libtool</command> program which then passes
71 <emphasis>"-static"</emphasis> on to the linker.</para></listitem>
74 <para>Compilation is now complete. This is the point where we would normally
75 run the test suite. But as discussed earlier, we don't recommend running the
76 test suites for the temporary tools here in this chapter. However, even if we
77 still wanted to run the Binutils test suite, we're unable do so at this early
78 stage because the test suite framework is not yet in place. Not only that, the
79 programs from this first pass will soon be overwritten by those installed in
80 the second pass.</para>
82 <para>And install the package:</para>
84 <screen><userinput>make install</userinput></screen>
86 <para>Now prepare the linker for the "locking in" of Glibc later on:</para>
88 <screen><userinput>make -C ld clean
89 make -C ld LDFLAGS="-all-static" LIB_PATH=/tools/lib</userinput></screen>
91 <para>The meaning of the make parameters:</para>
94 <listitem><para><userinput>-C ld clean</userinput>: This tells the make program
95 to remove all the compiled files, but only in the <filename>ld</filename>
96 subdirectory.</para></listitem>
98 <listitem><para><userinput>-C ld LDFLAGS="-all-static" LIB_PATH=/tools/lib</userinput>:
99 This option rebuilds everything in the <filename>ld</filename> subdirectory.
100 Specifying the LIB_PATH makefile variable on the command line allows us to
101 override the default value and have it point to our temporary tools location.
102 The value of this variable specifies the linker's default library search path.
103 You'll see how this preparation is used later on in the
104 chapter.</para></listitem>
107 <!-- HACK - Force some whitespace to appease tidy -->
108 <literallayout></literallayout>
110 <warning><para>Do not yet remove the Binutils build and source directories. You
111 will need them again in their current state a bit further on in this
112 chapter.</para></warning>
114 <!-- HACK - Force some whitespace to appease tidy -->
115 <literallayout></literallayout>
119 <sect2><title> </title><para> </para>
120 <para>The details on this package are found in <xref linkend="contents-binutils"/>.</para>
121 <para> </para></sect2>