Author: Perry Lorier <isomer@undernet.org>

[ircu2.10.12-pk.git] / configure

diff --git a/configure b/configure
index 2e114da6b166c0497df6b3aa45c8e81934e72c6e..16b44b5d57c05dd5c993218c2e610633d11e8f6a 100755 (executable)
--- a/configure
+++ b/configure
@@ -8786,22 +8786,24 @@ _ACEOF
 fi
 
 fi
-if test -x "$LEX"
-then
+if test "$LEX" = ":" ; then
   { { echo "$as_me:$LINENO: error: Cannot find flex." >&5
 echo "$as_me: error: Cannot find flex." >&2;}
    { (exit 1); exit 1; }; }
+elif echo "" | $LEX -V -v --version > /dev/null 2>&1 ; then
+  :
+else
+  { { echo "$as_me:$LINENO: error: Cannot use $LEX as flex." >&5
+echo "$as_me: error: Cannot use $LEX as flex." >&2;}
+   { (exit 1); exit 1; }; }
 fi
 
-if test -z "$LEXLIB"
-then
-  { { echo "$as_me:$LINENO: error:
-  Cannot find a library with yywrap() in, but flex was found.
+if test -z "$LEXLIB" ; then
+  { { echo "$as_me:$LINENO: error: Cannot find a library with yywrap() in, but flex was found.
   It's possible the compiler you're using ($CC) is incompatible with the
   installed library.
 See \`config.log' for more details." >&5
-echo "$as_me: error:
-  Cannot find a library with yywrap() in, but flex was found.
+echo "$as_me: error: Cannot find a library with yywrap() in, but flex was found.
   It's possible the compiler you're using ($CC) is incompatible with the
   installed library.
 See \`config.log' for more details." >&2;}
@@ -8851,11 +8853,15 @@ fi
 done
 test -n "$YACC" || YACC="yacc"
 
-if test -z "$YACC"
-then
+if test "$YACC" = ":" ; then
   { { echo "$as_me:$LINENO: error: Cannot find yacc." >&5
 echo "$as_me: error: Cannot find yacc." >&2;}
    { (exit 1); exit 1; }; }
+elif echo "" | $YACC -V -v --version > /dev/null 2>&1 ; then
+  :
+else
+  { echo "$as_me:$LINENO: WARNING: $YACC may not work as yacc." >&5
+echo "$as_me: WARNING: $YACC may not work as yacc." >&2;}
 fi