source: BOOK/final-system/multilib/adjusting.xml@ f6853e3

systemd
Last change on this file since f6853e3 was cc14b18, checked in by William Harrington <kb0iic@…>, 9 years ago

Add int to main since GCC 5 returns defaults to int [-Wimplicit-int]. Suppress the warning.

  • Property mode set to 100644
File size: 2.5 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-adjusting">
9 <?dbhtml filename="adjusting.html"?>
10
11 <title>Adjusting the Toolchain</title>
12
13 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
14 href="../common/adjusting.xml"
15 xpointer="xpointer(//*[@os='a'])"/>
16
17<screen os="c"><userinput>gcc -dumpspecs | \
18perl -p -e 's@/tools/lib/ld@/lib/ld@g;' \
19 -e 's@/tools/lib64/ld@/lib64/ld@g;' \
20 -e 's@\*startfile_prefix_spec:\n@$_/usr/lib/ @g;' &gt; \
21 $(dirname $(gcc --print-libgcc-file-name))/specs</userinput></screen>
22
23 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
24 href="../common/adjusting.xml"
25 xpointer="xpointer(//*[@os='d'])"/>
26
27 <caution>
28
29 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
30 href="../common/adjusting.xml"
31 xpointer="xpointer(//*[@os='f'])"/>
32
33 <para os="m2">For 32 bit ABI:</para>
34
35<screen os="m3"><userinput>echo 'int main(){}' &gt; dummy.c
36gcc ${BUILD32} dummy.c
37readelf -l a.out | grep ': /lib'</userinput></screen>
38
39 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
40 href="../common/adjusting.xml"
41 xpointer="xpointer(//*[@os='h'])"/>
42
43 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
44 href="../common/adjusting.xml"
45 xpointer="xpointer(//*[@os='i'])"/>
46
47 <para os="m4">For 64 bit ABI:</para>
48
49<screen os="m5"><userinput>echo 'main(){}' &gt; dummy.c
50gcc ${BUILD64} dummy.c
51readelf -l a.out | grep ': /lib'</userinput></screen>
52
53 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
54 href="../common/adjusting.xml"
55 xpointer="xpointer(//*[@os='h'])"/>
56
57 <!-- specific to sparc64 -->
58<screen os="i"><computeroutput>[Requesting program interpreter: /lib64/ld-linux.so.2]</computeroutput></screen>
59
60 <para os="m7">Note that <filename class="directory">/lib</filename> or
61 <filename class="directory">/lib64</filename> is now the prefix
62 of our dynamic linker.</para>
63
64 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
65 href="../common/adjusting.xml"
66 xpointer="xpointer(//*[@os='k'])"/>
67
68 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
69 href="../common/adjusting.xml"
70 xpointer="xpointer(//*[@os='l'])"/>
71
72 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
73 href="../common/adjusting.xml"
74 xpointer="xpointer(//*[@os='m'])"/>
75
76 </caution>
77
78</sect1>
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