Provide AC_PROG_LEX that copes with LEX=missing from top-level

[deliverable/binutils-gdb.git] / binutils / configure

diff --git a/binutils/configure b/binutils/configure
index e1452e332987ef59c53b1ede4454340301679bc7..dc735dcc9d84adca0264dfe06617f5a042579555 100755 (executable)
--- a/binutils/configure
+++ b/binutils/configure
@@ -12112,8 +12112,9 @@ fi
 done
 test -n "$LEX" || LEX=":"
 
-if test "x$LEX" != "x:"; then
-  cat >conftest.l <<_ACEOF
+case "$LEX" in
+  :|*"missing "*) ;;
+  *) cat >conftest.l <<_ACEOF
 %%
 a { ECHO; }
 b { REJECT; }
@@ -12224,8 +12225,8 @@ $as_echo "#define YYTEXT_POINTER 1" >>confdefs.h
 
 fi
 rm -f conftest.l $LEX_OUTPUT_ROOT.c
-
-fi
+ ;;
+esac
 if test "$LEX" = :; then
   LEX=${am_missing_run}flex
 fi