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 > 2 && $2 == ":" {
for (i = 0; i <= NF - 3; ++i)
firstversion[$1, i] = $(3 + i);
idx[$1] = 0;
next;
}
NF == 2 && $2 == "{" { thislib = $1; print; next }
$1 == "}" {
if (firstversion[thislib, idx[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, idx[thislib]];
idx[thislib]++;
}
print;
next;
}
{
v = firstversion[thislib, idx[thislib]];
if (! v)
print;
else if ($1 == v) {
print;
firstversion[thislib, idx[thislib]] = 0;
idx[thislib]++;
}
else
print $1, "=", v;
}