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-rw-r--r--scripts/firstversions.awk31
1 files changed, 27 insertions, 4 deletions
diff --git a/scripts/firstversions.awk b/scripts/firstversions.awk
index 8da92ae485..4a20fc0f9d 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