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toolchaintechnotes: gcc -dumpmachine is similar to config.guess, but not same

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Many distros have some customized things in gcc -dumpmachine.  RHEL uses
x86_64-redhat-linux-gnu, and Ubuntu uses x86_64-linux-gnu ("vendor"
field omitted).  So don't use "same" here, and also mention the "vendor"
field is sometimes omitted.
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Xi Ruoyao 2022-09-29 19:12:18 +08:00
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part3intro/toolchaintechnotes.xml
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@ -146,7 +146,8 @@
<note>
<para>Almost all the build systems use names of the form
cpu-vendor-kernel-os, referred to as the machine triplet. An astute
cpu-vendor-kernel-os, referred to as the machine triplet. The vendor
field is sometimes omitted. An astute
reader may wonder why a <quote>triplet</quote> refers to a four component
name. The reason is historical: initially, three component names were enough
to designate a machine unambiguously, but as new machines and systems
@ -159,7 +160,7 @@
output will be <emphasis>i686-pc-linux-gnu</emphasis>. On a 64-bit
system it will be <emphasis>x86_64-pc-linux-gnu</emphasis>. On most
Linux systems the even simpler <command>gcc -dumpmachine</command> command
will give you the same information.</para>
will give you the similar information.</para>
<para>You should also be aware of the name of the platform's dynamic linker, often
referred to as the dynamic loader (not to be confused with the standard