1 files changed, 1 insertions, 1 deletions
diff --git a/configure b/configure
index b771eff4..e41ee237 100755
--- a/configure
+++ b/configure
@@ -9953,7 +9953,7 @@ esac
 for ac_func in __etoa_l atexit btowc fmod gai_strerror \
 	getgrent getgroups grantpt \
 	fwrite_unlocked \
-	isascii iswctype iswlower iswupper mbrlen \
+	isascii isblank iswctype iswlower iswupper mbrlen \
 	memcmp memcpy memcpy_ulong memmove memset \
 	memset_ulong mkstemp posix_openpt setenv setlocale setsid sigprocmask \
 	snprintf strchr \