diff --git a/configure b/configure
index 545b20b4..201ad765 100755
--- a/configure
+++ b/configure
@@ -15509,6 +15509,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+if test "$acx_pthread_ok" != "yes"; then
+    as_fn_error $? "Missing Pthread Library" "$LINENO" 5
+else
+    LIBS="$LIBS $PTHREAD_LIBS"
+fi
+
 
 
 subdirs="$subdirs libsodium"
diff --git a/configure.ac b/configure.ac
index 702a0db0..6c1901e2 100755
--- a/configure.ac
+++ b/configure.ac
@@ -227,6 +227,12 @@ AC_CHECK_FUNCS([malloc memset socket])
 
 ACX_PTHREAD
 
+if test "$acx_pthread_ok" != "yes"; then
+    AC_MSG_ERROR([Missing Pthread Library])
+else
+    LIBS="$LIBS $PTHREAD_LIBS"
+fi
+
 AC_CONFIG_SUBDIRS([libsodium])
 
 AC_CONFIG_FILES([ shadowsocks-libev.pc
diff --git a/src/Makefile.am b/src/Makefile.am
index e389d743..49489926 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -8,10 +8,7 @@ AM_CFLAGS += -I$(top_srcdir)/libipset/include
 AM_CFLAGS += -I$(top_srcdir)/libcork/include
 AM_CFLAGS += -I$(top_srcdir)/libsodium/src/libsodium/include
 
-AM_LDFLAGS = -static
-
-SS_COMMON_LIBS = $(PTHREAD_LIBS) \
-				 $(top_builddir)/libev/libev.la \
+SS_COMMON_LIBS = $(top_builddir)/libev/libev.la \
 				 $(top_builddir)/libipset/libipset.la \
 				 $(top_builddir)/libcork/libcork.la \
 				 $(top_builddir)/libsodium/src/libsodium/libsodium.la \
diff --git a/src/Makefile.in b/src/Makefile.in
index cf9fdab2..8344e0b4 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -108,8 +108,7 @@ am__installdirs = "$(DESTDIR)$(libdir)" "$(DESTDIR)$(bindir)" \
 	"$(DESTDIR)$(includedir)"
 LTLIBRARIES = $(lib_LTLIBRARIES)
 am__DEPENDENCIES_1 =
-am__DEPENDENCIES_2 = $(am__DEPENDENCIES_1) \
-	$(top_builddir)/libev/libev.la \
+am__DEPENDENCIES_2 = $(top_builddir)/libev/libev.la \
 	$(top_builddir)/libipset/libipset.la \
 	$(top_builddir)/libcork/libcork.la \
 	$(top_builddir)/libsodium/src/libsodium/libsodium.la \
@@ -369,9 +368,7 @@ AM_CFLAGS = -g -O2 -Wall -Werror -Wno-deprecated-declarations \
 	-I$(top_srcdir)/libudns -I$(top_srcdir)/libipset/include \
 	-I$(top_srcdir)/libcork/include \
 	-I$(top_srcdir)/libsodium/src/libsodium/include
-AM_LDFLAGS = -static
-SS_COMMON_LIBS = $(PTHREAD_LIBS) \
-				 $(top_builddir)/libev/libev.la \
+SS_COMMON_LIBS = $(top_builddir)/libev/libev.la \
 				 $(top_builddir)/libipset/libipset.la \
 				 $(top_builddir)/libcork/libcork.la \
 				 $(top_builddir)/libsodium/src/libsodium/libsodium.la \