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-rw-r--r--scripts/versions.awk117
1 files changed, 117 insertions, 0 deletions
diff --git a/scripts/versions.awk b/scripts/versions.awk
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+# Combine version map fragments into version files for the generated
+# shared object.
+# (C) Copyright 1998 Free Software Foundation, Inc.
+# Written by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+# This script expects the following variables to be defined:
+# defsfile name of Versions.def file
+# buildroot name of build directory with trailing slash
+# move_if_change move-if-change command
+
+# Read definitions for the versions.
+BEGIN {
+ nlibs=0;
+ while (getline < defsfile) {
+ if (/^[a-zA-Z_]+ {/) {
+ libs[$1] = 1;
+ curlib = $1;
+ while (getline < defsfile && ! /^}/) {
+ versions[$1] = 1;
+ if (NF > 1) {
+ derived[curlib, $1] = " " $2;
+ for (n = 3; n <= NF; ++n) {
+ derived[curlib, $1] = derived[curlib, $1] ", " $n;
+ }
+ }
+ }
+ }
+ }
+ close(defsfile);
+
+ tmpfile = buildroot "Versions.tmp";
+ sort = "sort -n > " tmpfile;
+}
+
+# Remove comment lines.
+/^ *#/ {
+ next;
+}
+
+# This matches the beginning of the version information for a new library.
+/^[a-zA-Z_]+/ {
+ actlib = $1;
+ if (!libs[$1]) {
+ printf("no versions defined for %s\n", $1) > "/dev/stderr";
+ exit 1;
+ }
+ next;
+}
+
+# This matches the beginning of a new version for the current library.
+/^ [A-Za-z_]/ {
+ actver = $1;
+ if (!versions[$1]) {
+ printf("version %s not defined\n", $1) > "/dev/stderr";
+ exit 1;
+ }
+ next;
+}
+
+# This matches lines with names to be added to the current version in the
+# current library. This is the only place where we print something to
+# the intermediate file.
+/^ / {
+ printf("%s %s %s\n", actlib, actver, $0) | sort;
+}
+
+
+function closeversion(name) {
+ if (firstinfile) {
+ printf(" local:\n *;\n") > outfile;
+ firstinfile = 0;
+ }
+ printf("}%s;\n", derived[oldlib, name]) > outfile;
+}
+
+function close_and_move(name, real_name) {
+ close(name);
+ system(move_if_change " " name " " real_name " >&2");
+}
+
+# Now print the accumulated information.
+END {
+ close(sort);
+ oldlib = "";
+ oldver = "";
+ printf("version-maps =");
+ while(getline < tmpfile) {
+ if ($1 != oldlib) {
+ if (oldlib != "") {
+ closeversion(oldver);
+ oldver = "";
+ close_and_move(outfile, real_outfile);
+ }
+ oldlib = $1;
+ real_outfile = buildroot oldlib ".map";
+ outfile = real_outfile "T";
+ firstinfile = 1;
+ printf(" %s.map", oldlib);
+ }
+ if ($2 != oldver) {
+ if (oldver != "") {
+ closeversion(oldver);
+ }
+ printf("%s {\n global:\n", $2) > outfile;
+ oldver = $2;
+ }
+ printf(" ") > outfile;
+ for (n = 3; n <= NF; ++n) {
+ printf(" %s", $n) > outfile;
+ }
+ printf("\n") > outfile;
+ }
+ printf("\n");
+ closeversion(oldver);
+ close_and_move(outfile, real_outfile);
+ system("rm -f " tmpfile);
+}