glibc/scripts/firstversions.awk

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# Script to preprocess Versions.all lists based on "earliest version"
# specifications in the shlib-versions file.
NF == 3 && $2 == ":" { firstversion[$1] = $3; next }
NF == 2 && $2 == "{" { thislib = $1; print; next }
$1 == "}" {
if (firstversion[thislib]) {
# We haven't seen the stated version, but have produced
# others pointing to it, so we synthesize it now.
printf " %s\n", firstversion[thislib];
}
print;
next;
}
{
if (! firstversion[thislib])
print;
else if ($1 == firstversion[thislib]) {
print;
firstversion[thislib] = 0;
}
else
print $1, "=", firstversion[thislib];
}