tests: fix spurious failure of 'get-sysconf.test'

* tests/get-sysconf.test: Do not assume that a ChangeLog file exists
in $(srcdir): now that the ChangeLog is autogenerated and not under
version control anymore, this is not necessary true.  Instead, if we
are running from a git checkout, use "git log" to get information on
the version of the automake snapshot being tested (and fall back on
extracting the first ChangeLog entry otherwise).

Reported by Jim Meyering in automake bug#10418.

diff --git a/tests/get-sysconf.test b/tests/get-sysconf.test
index fe78d709053614a8f119d491e1e356eddd26b946..039a4369a77db74a6866da1b8d75f181179906c1 100755 (executable)
--- a/tests/get-sysconf.test
+++ b/tests/get-sysconf.test
@@ -23,7 +23,19 @@
 . ./defs || Exit 1
 
 st=0
-sed 20q "$top_testsrcdir/ChangeLog" || st=1
+if test -d "$top_testsrcdir"/.git; then
+  # We are running from a git checkout.
+  git log -1 || st=1
+else
+  # We are probably running from a distribution tarball, so
+  # the ChangeLog file must be present.
+  awk '
+    BEGIN { first = 1 }
+    (first == 1) { print; first = 0; next; }
+    /^[^\t]/ { exit(0); }
+    { print }
+  ' "$top_testsrcdir"/ChangeLog || st=1
+fi
 $PERL -V || st=1
 cat "$top_testbuilddir/config.log" || st=1
 cat "$testbuilddir/aclocal-$APIVERSION" || st=1