diff --git a/bin/config.guess b/bin/config.guess
index 278f9e9..76d39e9 100755
--- a/bin/config.guess
+++ b/bin/config.guess
@@ -1008,6 +1008,9 @@ EOF
 	#ifdef __dietlibc__
 	LIBC=dietlibc
 	#endif
+	#ifdef __UCLIBC__
+	LIBC=uclibc
+	#endif
 EOF
 	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
 	    /^LIBC/{
diff --git a/configure.ac b/configure.ac
index 33c1072..bdb8fc1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,6 +86,9 @@ case "$host_os" in
 *-gnu*)
     DEFINES="$DEFINES -D_GNU_SOURCE -DPTHREADS"
     ;;
+*-uclibc*)
+    DEFINES="$DEFINES -D_GNU_SOURCE -DPTHREADS"
+    ;;
 solaris*)
     DEFINES="$DEFINES -DPTHREADS -DSVR4"
     ;;