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hostreqs: Bump Coreutils minimal version to 8.1 and check for nproc

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We'll use nproc for setting MAKEFLAGS and TESTSUITEFLAGS.  And if nproc
is not available, we'll end up with "MAKEFLAGS=-j" which is very
dangerous because it allows make to spawn infinite number of jobs.
Check it early.

The nproc program is added in Coreutils 8.1 so we need to bump the
minimal version.
This commit is contained in:
Xi Ruoyao 2023-11-13 21:00:03 +08:00
parent 5196daeb4e
commit e70bf8f4f4
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1 changed files with 11 additions and 4 deletions
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15
chapter02/hostreqs.xml
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@ -54,8 +54,9 @@
should be a link to bison or a small script that executes bison)</para>
</listitem>
<!-- In Coreutils-8.1 the nproc program is added. -->
<listitem>
<para><emphasis role="strong">Coreutils-7.0</emphasis></para>
<para><emphasis role="strong">Coreutils-8.1</emphasis></para>
</listitem>
<listitem>
@ -218,8 +219,8 @@ ver_kernel()
fi
}
# Coreutils first because-sort needs Coreutils >= 7.0
ver_check Coreutils sort 7.0 || bail "--version-sort unsupported"
# Coreutils first because --version-sort needs Coreutils >= 7.0
ver_check Coreutils sort 8.1 || bail "Coreutils too old, stop"
ver_check Bash bash 3.2
ver_check Binutils ld 2.13.1
ver_check Bison bison 2.7
@ -259,7 +260,13 @@ echo "Compiler check:"
if printf "int main(){}" | g++ -x c++ -
then echo "OK: g++ works";
else echo "ERROR: g++ does NOT work"; fi
rm -f a.out</literal>
rm -f a.out
if [ "$(nproc)" = "" ]; then
echo "ERROR: nproc is not available or it produces empty output"
else
echo "OK: nproc reports $(nproc) logical cores are available"
fi</literal>
EOF
bash version-check.sh</userinput></screen>