diff options
Diffstat (limited to 'scripts/firstversions.awk')
| -rw-r--r-- | scripts/firstversions.awk | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/scripts/firstversions.awk b/scripts/firstversions.awk index 8da92ae..4a20fc0 100644 --- a/scripts/firstversions.awk +++ b/scripts/firstversions.awk @@ -1,6 +1,31 @@ # Script to preprocess Versions.all lists based on "earliest version" # specifications in the shlib-versions file. +# Return -1, 0 or 1 according to whether v1 is less than, equal to or +# greater than v2 as a version string. Simplified from GNU Autoconf +# version; this one does not need to handle .0x fraction-style versions. +function vers_compare (v1, v2) +{ + while (length(v1) && length(v2)) { + if (v1 ~ /^[0-9]/ && v2 ~ /^[0-9]/) { + for (len1 = 1; substr(v1, len1 + 1) ~ /^[0-9]/; len1++) continue; + for (len2 = 1; substr(v2, len2 + 1) ~ /^[0-9]/; len2++) continue; + d1 = substr(v1, 1, len1); v1 = substr(v1, len1 + 1); + d2 = substr(v2, 1, len2); v2 = substr(v2, len2 + 1); + d1 += 0; + d2 += 0; + } else { + d1 = substr(v1, 1, 1); v1 = substr(v1, 2); + d2 = substr(v2, 1, 1); v2 = substr(v2, 2); + } + if (d1 < d2) return -1; + if (d1 > d2) return 1; + } + if (length(v2)) return -1; + if (length(v1)) return 1; + return 0; +} + NF > 2 && $2 == ":" { for (i = 0; i <= NF - 3; ++i) firstversion[$1, i] = $(3 + i); @@ -25,10 +50,8 @@ $1 == "}" { { if ((thislib, idx[thislib]) in firstversion) { - # XXX relative string comparison loses if we ever have multiple digits - # between dots in GLIBC_x.y[.z] names. f = v = firstversion[thislib, idx[thislib]]; - while ($1 >= v) { + while (vers_compare($1, v) >= 0) { delete firstversion[thislib, idx[thislib]]; idx[thislib]++; if ((thislib, idx[thislib]) in firstversion) @@ -39,7 +62,7 @@ $1 == "}" { if ($1 == v || $1 == f) # This version was the specified earliest version itself. print; - else if ($1 < v) { + else if (vers_compare($1, v) < 0) { # This version is older than the specified earliest version. print " " $1, "=", v; # Record that V has been referred to, so we will be sure to emit it |