From: Derrick Brashear <shadow@dementia.org>
Date: Tue, 13 Jul 2010 18:31:41 +0000 (-0400)
Subject: simple is-lex-flex autoconf test
X-Git-Tag: openafs-devel-1_5_76~129
X-Git-Url: https://git.michaelhowe.org/gitweb/?a=commitdiff_plain;h=b666166b6d81b5a8079030e66d527bd708afeede;p=packages%2Fo%2Fopenafs.git

simple is-lex-flex autoconf test

if we're flex, we may need to be lex-compatible. engage
it if we're flex

Change-Id: If9a39ca0bce3f4a68b742d1e8f0c679d3f79896e
Change-Id: I7f245d579bcc46fdd0aa7202bbd45f3f9f647ebc
Reviewed-on: http://gerrit.openafs.org/2399
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
---

diff --git a/acinclude.m4 b/acinclude.m4
index 5459b3c61..c30d99d99 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -271,6 +271,8 @@ AC_PROG_LN_S
 AC_PROG_RANLIB
 AC_PROG_YACC
 AM_PROG_LEX
+dnl if we are flex, be lex-compatible
+OPENAFS_LEX_IS_FLEX([AC_SUBST([LEX], ["$LEX -l"])])
 
 OPENAFS_CHECK_BIGENDIAN
 OPENAFS_PRINTF_TAKES_Z_LEN
diff --git a/src/cf/flex.m4 b/src/cf/flex.m4
new file mode 100644
index 000000000..d552c1866
--- /dev/null
+++ b/src/cf/flex.m4
@@ -0,0 +1,8 @@
+# OPENAFS_LEX_IS_FLEX([ACTION-IF-SUCCESS], [ACTION-IF-FAILURE])
+AC_DEFUN([OPENAFS_LEX_IS_FLEX],
+[AC_MSG_CHECKING([if lex is flex])
+ AS_IF([echo '' | $LEX --version >&AS_MESSAGE_LOG_FD],
+    [AC_MSG_RESULT([yes])
+     $1],
+    [AC_MSG_RESULT([no])
+     $2])])