diff --git a/README.md b/README.md
index cbce9fe74..0d193eda3 100755
--- a/README.md
+++ b/README.md
@@ -157,6 +157,7 @@ For previous versions, please read:
 
 ## V3 changes
 
+* v3.0, 2020-01-26, Allow use libst.so for ST is MPL license.
 * v3.0, 2020-01-26, Fix [#607][bug #607], set RTMP identifying recursive depth to 3.
 * v3.0, 2020-01-25, Fix [#878][bug #878], remove deprecated #EXT-X-ALLOW-CACHE for HLS. 3.0.108
 * v3.0, 2020-01-25, Fix [#703][bug #703], drop video data util sps/pps. 3.0.107
diff --git a/trunk/auto/depends.sh b/trunk/auto/depends.sh
index 3105f7fdf..a4c8730df 100755
--- a/trunk/auto/depends.sh
+++ b/trunk/auto/depends.sh
@@ -329,7 +329,7 @@ fi
 # Affected users should upgrade to OpenSSL 1.1.0e. Users unable to immediately
 # upgrade can alternatively recompile OpenSSL with -DOPENSSL_NO_HEARTBEATS.
 if [[ $SRS_SSL == YES && $SRS_USE_SYS_SSL != YES ]]; then
-    OPENSSL_HOTFIX="-DOPENSSL_NO_HEARTBEATS"
+    OPENSSL_OPTIONS="-no-shared -no-threads -no-asm -DOPENSSL_NO_HEARTBEATS"
     OPENSSL_CONFIG="./config"
     # https://stackoverflow.com/questions/15539062/cross-compiling-of-openssl-for-linux-arm-v5te-linux-gnueabi-toolchain
     if [[ $SRS_CROSS_BUILD == YES ]]; then
@@ -351,7 +351,7 @@ if [[ $SRS_SSL == YES && $SRS_USE_SYS_SSL != YES ]]; then
         (
             rm -rf ${SRS_OBJS}/openssl-1.1.0e && cd ${SRS_OBJS} &&
             unzip -q ../3rdparty/openssl-1.1.0e.zip && cd openssl-1.1.0e &&
-            ${OPENSSL_CONFIG} --prefix=`pwd`/_release -no-shared -no-threads -no-asm $OPENSSL_HOTFIX &&
+            ${OPENSSL_CONFIG} --prefix=`pwd`/_release $OPENSSL_OPTIONS &&
             make CC=${SRS_TOOL_CC} AR="${SRS_TOOL_AR} -rs" LD=${SRS_TOOL_LD} RANDLIB=${SRS_TOOL_RANDLIB} && make install_sw &&
             cd .. && rm -rf openssl && ln -sf openssl-1.1.0e/_release openssl
         )
diff --git a/trunk/auto/options.sh b/trunk/auto/options.sh
index 13ffe88b1..d1f769006 100755
--- a/trunk/auto/options.sh
+++ b/trunk/auto/options.sh
@@ -48,6 +48,8 @@ SRS_FFMPEG_STUB=NO
 SRS_PREFIX=/usr/local/srs
 SRS_JOBS=1
 SRS_STATIC=NO
+# If enabled, link shared libraries for libst.so which uses MPL license.
+SRS_SHARED_ST=NO
 # whether enable the gcov
 SRS_GCOV=NO
 # whether enable the log verbose/info/trace level.
@@ -183,6 +185,7 @@ Conflicts:
 
 Experts:
   --use-sys-ssl                     Do not compile ssl, use system ssl(-lssl) if required.
+  --use-shared-st                   Use link shared libraries for ST which uses MPL license.
   --export-librtmp-project=<path>   Export srs-librtmp to specified project in path.
   --export-librtmp-single=<path>    Export srs-librtmp to a single file(.h+.cpp) in path.
 
@@ -272,6 +275,8 @@ function parse_user_option() {
         --full)                         SRS_ENABLE_ALL=YES          ;;
         
         --use-sys-ssl)                  SRS_USE_SYS_SSL=YES         ;;
+        --use-shared-st)                SRS_SHARED_ST=YES           ;;
+
         --memory-watch)                 SRS_MEM_WATCH=YES           ;;
         --export-librtmp-project)       SRS_EXPORT_LIBRTMP_PROJECT=${value}     ;;
         --export-librtmp-single)        SRS_EXPORT_LIBRTMP_SINGLE=${value}      ;;
@@ -535,6 +540,7 @@ function regenerate_options() {
     if [ $SRS_GPERF_CP = YES ]; then SRS_AUTO_CONFIGURE="${SRS_AUTO_CONFIGURE} --with-gcp"; else SRS_AUTO_CONFIGURE="${SRS_AUTO_CONFIGURE} --without-gcp"; fi
     if [ $SRS_GPROF = YES ]; then SRS_AUTO_CONFIGURE="${SRS_AUTO_CONFIGURE} --with-gprof"; else SRS_AUTO_CONFIGURE="${SRS_AUTO_CONFIGURE} --without-gprof"; fi
     if [ $SRS_STATIC = YES ]; then SRS_AUTO_CONFIGURE="${SRS_AUTO_CONFIGURE} --static"; fi
+    if [ $SRS_SHARED_ST = YES ]; then SRS_AUTO_CONFIGURE="${SRS_AUTO_CONFIGURE} --use-shared-st"; fi
     if [ $SRS_LOG_VERBOSE = YES ]; then SRS_AUTO_CONFIGURE="${SRS_AUTO_CONFIGURE} --log-verbose"; fi
     if [ $SRS_LOG_INFO = YES ]; then SRS_AUTO_CONFIGURE="${SRS_AUTO_CONFIGURE} --log-info"; fi
     if [ $SRS_LOG_TRACE = YES ]; then SRS_AUTO_CONFIGURE="${SRS_AUTO_CONFIGURE} --log-trace"; fi
diff --git a/trunk/auto/utest.sh b/trunk/auto/utest.sh
index cb1a877c9..d8cce4a6f 100755
--- a/trunk/auto/utest.sh
+++ b/trunk/auto/utest.sh
@@ -167,7 +167,11 @@ echo "" >> ${FILE}
 echo "# link all depends libraries" >> ${FILE}
 echo -n "DEPS_LIBRARIES_FILES = " >> ${FILE}
 for item in ${ModuleLibFiles[*]}; do
-    echo -n "${SRS_TRUNK_PREFIX}/${item} " >> ${FILE}
+    if [[ -f ${item} ]]; then
+        echo -n "${SRS_TRUNK_PREFIX}/${item} " >> ${FILE}
+    else
+        echo -n "${item} " >> ${FILE}
+    fi
 done
 echo "" >> ${FILE}; echo "" >> ${FILE}
 #
diff --git a/trunk/configure b/trunk/configure
index ad446a761..843d18376 100755
--- a/trunk/configure
+++ b/trunk/configure
@@ -147,6 +147,7 @@ END
 #
 # st(state-threads) the basic network library for SRS.
 LibSTRoot="${SRS_OBJS_DIR}/st"; LibSTfile="${LibSTRoot}/libst.a"
+if [[ $SRS_SHARED_ST == YES ]]; then LibSTfile="-lst"; fi
 # openssl-1.1.0e, for the RTMP complex handshake.
 LibSSLRoot="";LibSSLfile=""
 if [[ $SRS_SSL == YES && $SRS_USE_SYS_SSL == NO ]]; then