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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
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')
-rw-r--r--scripts/abi-versions.awk39
-rw-r--r--scripts/firstversions.awk27
-rw-r--r--scripts/versions.awk13
3 files changed, 76 insertions, 3 deletions
diff --git a/scripts/abi-versions.awk b/scripts/abi-versions.awk
new file mode 100644
index 0000000000..0cceaad66a
--- /dev/null
+++ b/scripts/abi-versions.awk
@@ -0,0 +1,39 @@
+# Script to generate <abi-versions.h> header file from Versions.all list.
+# See include/shlib-compat.h comments for explanation.
+
+BEGIN {
+ print "/* This file is automatically generated by abi-versions.awk.";
+ print " It defines symbols used by shlib-compat.h, which see. */";
+ print "\n#ifndef _ABI_VERSIONS_H\n#define _ABI_VERSIONS_H";
+}
+
+NF == 2 && $2 == "{" {
+ thislib = $1;
+ gsub(/[^A-Za-z0-9_ ]/, "_"); libid = $1;
+ printf "\n/* start %s */\n", thislib;
+ next;
+}
+$1 == "}" {
+ printf "/* end %s */\n", thislib;
+ next;
+}
+
+$2 == "=" {
+ new = $3;
+ gsub(/[^A-Za-z0-9_ ]/, "_"); id = $1;
+ printf "#define ABI_%s_%s\t0\t/* earliest supported %s */\n", libid, id, new;
+ printf "#define VERSION_%s_%s\t%s\n", libid, id, new;
+ next;
+}
+
+{
+ vers = $1;
+ gsub(/[^A-Za-z0-9_ ]/, "_"); id = $1;
+ printf "#define ABI_%s_%s\t1\t/* support %s */\n", libid, id, vers;
+ printf "#define VERSION_%s_%s\t%s\n", libid, id, vers;
+ next;
+}
+
+END {
+ print "\n#endif /* abi-versions.h */";
+}
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];
+}
diff --git a/scripts/versions.awk b/scripts/versions.awk
index 78ed73914b..086a963b25 100644
--- a/scripts/versions.awk
+++ b/scripts/versions.awk
@@ -16,7 +16,10 @@ BEGIN {
libs[$1] = 1;
curlib = $1;
while (getline < defsfile && ! /^}/) {
- versions[$1] = 1;
+ if ($2 == "=")
+ renamed[$1] = $3;
+ else
+ versions[$1] = 1;
}
}
}
@@ -33,6 +36,7 @@ BEGIN {
# This matches the beginning of the version information for a new library.
/^[a-zA-Z0-9_.]+/ {
+ delete renamed;
actlib = $1;
if (!libs[$1]) {
printf("no versions defined for %s\n", $1) > "/dev/stderr";
@@ -43,11 +47,14 @@ BEGIN {
# This matches the beginning of a new version for the current library.
/^ [A-Za-z_]/ {
- actver = $1;
- if (!versions[$1]) {
+ if (renamed[$1])
+ actver = renamed[$1];
+ else if (!versions[$1]) {
printf("version %s not defined\n", $1) > "/dev/stderr";
exit 1;
}
+ else
+ actver = $1;
next;
}