(_AC_FEATURE_CHECK_LENGTH): If the variable to set is already set, set

ac_cv_path_$1 to the preset value.

diff --git a/lib/autoconf/programs.m4 b/lib/autoconf/programs.m4
index 9076b184bc3e49b1fe303e539f4f026a63bf7ce4..ee14f58db3298a78662e27b2c965fec447d34864 100644 (file)
--- a/lib/autoconf/programs.m4
+++ b/lib/autoconf/programs.m4
@@ -447,6 +447,8 @@ if test -z "$$1"; then
 m4_default([$4], [\$PATH])])
 fi
 AC_SUBST([$1])
+else
+  ac_cv_path_$1=$$1
 fi
 ])