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tests: diff -u is not portable

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Reported by Didier Godefroy
<http://lists.gnu.org/archive/html/bug-bison/2012-10/msg00006.html>.

* tests/existing.at (AT_LALR1_DIFF_CHECK): Skip if diff -u does not
work.
This commit is contained in:
Akim Demaille
2012-10-05 08:54:15 +02:00
parent e28ce5def0
commit 9a50c55af7
2 changed files with 5 additions and 2 deletions
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5
tests/existing.at
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@@ -35,7 +35,10 @@ dnl time comes, just use sed to drop the line numbers. For now, as LR(1)
dnl support is rapidly evolving, let's keep that information to be careful.
dnl However, we don't do diffs for canonical LR(1) because the diff is huge.
m4_pushdef([AT_LALR1_DIFF_CHECK],
[AT_CHECK([[sed 's/^%define lr.type .*$//' input.y > input-lalr.y]])
[dnl We need diff -u, which is not portable.
AT_CHECK([diff -u /dev/null /dev/null || exit 77], [0], [ignore])
AT_CHECK([[sed 's/^%define lr.type .*$//' input.y > input-lalr.y]])
AT_BISON_CHECK([[--report=all input-lalr.y]], [[0]], [ignore], [ignore])
AT_CHECK([[diff -u input-lalr.output input.output \
| sed -n '/^@@/,$p' | sed 's/^ $//']],