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| author | Guy Harris <guy@alum.mit.edu> | 2006-10-19 07:45:10 +0000 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2006-10-19 07:45:10 +0000 |
| commit | e773247138e940ec0653b424011884a9d3818546 (patch) | |
| tree | 007f076377fb6bf2e9dedfe8b959ac4e22a01b62 /wiretap/Makefile.am | |
| parent | 4f5a48c4f62cca7b33fb5757c9538d495de99282 (diff) | |
If we have to use Lex or Flex, check whether we found it, first, and if
we didn't, report an error and fail, rather than blithely executing
commands with the command a blank string.
svn path=/trunk/; revision=19602
Diffstat (limited to 'wiretap/Makefile.am')
| -rw-r--r-- | wiretap/Makefile.am | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/wiretap/Makefile.am b/wiretap/Makefile.am index 13f75887dd..8a5616384f 100644 --- a/wiretap/Makefile.am +++ b/wiretap/Makefile.am @@ -57,4 +57,8 @@ EXTRA_DIST = \ AM_YFLAGS=-d -p ascend ascend-scanner.c : ascend-scanner.l + @if [ ! -x "$(LEX)" ]; then \ + echo "Neither lex nor flex was found"; \ + exit 1; \ + fi $(LEX) -Pascend -oascend-scanner.c $(srcdir)/ascend-scanner.l |