2000-03-21 Roland McGrath <roland@baalperazim.frob.com>

	* scripts/firstversions.awk: Allow multiple version sets in the
	"earliest version" specification, meaning that version sets in the
	gaps between listed versions should be folded into the earliest later
	version that is explicitly listed.
	* shlib-versions (mips.*-.*-linux.*): Use that syntax for to say
	we support GLIBC_2.0 and GLIBC_2.2 but not the intervening sets.

diff --git a/scripts/firstversions.awk b/scripts/firstversions.awk
index 236d90e..7f1c2ed 100644 (file)
--- a/scripts/firstversions.awk
+++ b/scripts/firstversions.awk
@@ -1,27 +1,36 @@
 # 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 == ":" {
+  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]) {
+  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];
+    printf "  %s\n", firstversion[thislib, idx[thislib]];
+    idx[thislib]++;
   }
   print;
   next;
 }
 
 {
-  if (! firstversion[thislib])
+  v = firstversion[thislib, idx[thislib]];
+
+  if (! v)
     print;
-  else if ($1 == firstversion[thislib]) {
+  else if ($1 == v) {
     print;
-    firstversion[thislib] = 0;
+    firstversion[thislib, idx[thislib]] = 0;
+    idx[thislib]++;
   }
   else
-    print $1, "=", firstversion[thislib];
+    print $1, "=", v;
 }

diff --git a/shlib-versions b/shlib-versions
index f907bc7..f4365ee 100644 (file)
--- a/shlib-versions
+++ b/shlib-versions
@@ -8,6 +8,11 @@
 # This file can use cpp-style conditionals starting with % instead of #
 # to test the symbols defined in config.h by configure.
 
+# In the optional third column, there can one or more symbol set names
+# listed, which must be in ascending version order reading left to right
+# and must appear in this same order in the Versions.def file.  Each listed
+# version subsumes all prior versions back to the previous listed version.
+
 # Configuration                Library=version         Earliest symbol set (optional)
 # -------------                ---------------         ------------------------------
 
@@ -23,6 +28,8 @@ arm.*-.*-.*           libm=6
 
 # We provide libc.so.6 for Linux kernel versions 2.0 and later.
 alpha.*-.*-linux.*     libc=6.1
+# Working mips versions were never released between 2.0 and 2.2.
+mips.*-.*-linux.*      libc=6                  GLIBC_2.0 GLIBC_2.2
 .*-.*-linux.*          libc=6
 
 # libmachuser.so.1 corresponds to mach/*.defs as of Utah's UK22 release.