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authorRoland McGrath <roland@gnu.org>2000-03-19 20:36:44 +0000
committerRoland McGrath <roland@gnu.org>2000-03-19 20:36:44 +0000
commit361742eda986901daf75169faaf648d4d132ccfb (patch)
treea5d99df3b839ac0fd99cf17886ea35b900d16039 /scripts/firstversions.awk
parent882688521994c2329242212a61dd2a7c44eadbc6 (diff)
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* shlib-versions [USE_IN_LIBIO] (.*-.*-gnu-gnu*): Set earliest
supported version for libc 0.2.90.libio to GLIBC_2.2. * Makeconfig (soversions.mk): Grok new third column in shlib-versions, and use it to emit new variable `map-firstversions'. * scripts/firstversions.awk: New file. * Makerules (Versions.all): Use scripts/firstversions.awk and the $(map-firstversions) value to generate a modified versions list that includes renames in "A = B" syntax for each version set earlier than the "earliest symbol version" named in shlib-versions. * scripts/versions.awk: Recognize "A = B" lines in the input to mean rename version set A to B in the output to the intermediate file. * scripts/abi-versions.awk: New file. * Makerules (abi-versions.h): New target, generated by that script. [$(versioning) = yes] (before-compile): Prepend abi-versions.h. * include/shlib-compat.h: New file, uses that generated header.
Diffstat (limited to 'scripts/firstversions.awk')
-rw-r--r--scripts/firstversions.awk27
1 files changed, 27 insertions, 0 deletions
diff --git a/scripts/firstversions.awk b/scripts/firstversions.awk
new file mode 100644
index 0000000000..236d90ec97
--- /dev/null
+++ b/scripts/firstversions.awk
@@ -0,0 +1,27 @@
+# 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 == "{" { thislib = $1; print; next }
+
+$1 == "}" {
+ if (firstversion[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];
+ }
+ print;
+ next;
+}
+
+{
+ if (! firstversion[thislib])
+ print;
+ else if ($1 == firstversion[thislib]) {
+ print;
+ firstversion[thislib] = 0;
+ }
+ else
+ print $1, "=", firstversion[thislib];
+}