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automake: Do not use only 4 cores for testing if we have more

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Xi Ruoyao 2023-09-11 16:07:26 +08:00
parent 95ebbb42b7
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1 changed files with 6 additions and 3 deletions
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chapter08/automake.xml
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@ -53,11 +53,14 @@
<screen><userinput remap="make">make</userinput></screen>
<para> Using the -j4 make option speeds up the tests, even on systems with
only one processor, due to internal delays in individual tests. To test
<para>Using four parallel jobs speeds up the tests, even on systems with
less logical cores, due to internal delays in individual tests. To test
the results, issue:</para>
<screen><userinput remap="test">make -j4 check</userinput></screen>
<screen><userinput remap="test">make <replaceable>-j$(($(nproc)&gt;4?$(nproc):4))</replaceable> check</userinput></screen>
<para>Replace <replaceable>$((...))</replaceable> with the number of
logical cores you want to use if you don't want to use all.</para>
<para>The test t/subobj.sh is known to fail.</para>