1 files changed, 91 insertions, 0 deletions
diff --git a/t/lex3.sh b/t/lex3.sh
new file mode 100755
index 000000000..125152b44
--- /dev/null
+++ b/t/lex3.sh
@@ -0,0 +1,91 @@
+#! /bin/sh
+# Copyright (C) 1999-2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Basic semantic checks on Lex support.
+# Test associated with PR 19.
+# From Matthew D. Langston.
+
+required='cc lex'
+. ./defs || Exit 1
+
+cat >> configure.ac << 'END'
+AC_PROG_CC
+AM_PROG_LEX
+AC_OUTPUT
+END
+
+cat > Makefile.am << 'END'
+noinst_PROGRAMS = foo
+foo_SOURCES = foo.l
+END
+
+cat > foo.l << 'END'
+%{
+#define YY_NO_UNISTD_H 1
+%}
+%%
+"GOOD"   return EOF;
+.
+%%
+
+int main (void)
+{
+  /* We don't use a 'while' loop here (like a real lexer would do)
+     to avoid possible hangs. */
+  if (yylex () == EOF)
+    return 0;
+  else
+    return 1;
+}
+
+/* Avoid possible link errors. */
+int yywrap (void)
+{
+  return 1;
+}
+END
+
+$ACLOCAL
+$AUTOCONF
+$AUTOMAKE -a
+
+./configure
+
+# Program should build and run.
+$MAKE
+if cross_compiling; then :; else
+  echo GOOD | ./foo
+  echo BAD | ./foo && Exit 1
+  : For shells with busted 'set -e'.
+fi
+
+# The generated file 'foo.c' must be shipped.
+$MAKE distdir
+test -f $distdir/foo.c
+
+# Sanity check on distribution.
+yl_distcheck
+
+# While we are at it, make sure that foo.c is erased by
+# maintainer-clean, and not by distclean.
+test -f foo.c
+$MAKE distclean
+test -f foo.c
+./configure # Re-create 'Makefile'.
+$MAKE maintainer-clean
+test ! -f foo.c
+
+: