Fixed dp build script

libraries/build.sh

@@ -46,6 +46,7 @@ function exec_script_external() {
 
     echo -e "Building library with script $color_green${1}$color_normal"
     _prefix="library_path=\"$2\" ${*:3}"
+    echo "> $_prefix ./${build_helper_scripts}/\"${1}\""
     eval $_prefix ./${build_helper_scripts}/"${1}"
     code=$?
     if [[ $code -ne 0 ]]; then

libraries/build_datapipes.sh

@@ -31,9 +31,13 @@ if [[ ${build_os_type} != "win32" && "${_datapipes_webrtc}" == "ON" ]]; then
     echo "Building dependencies"
     ./build_usrsctp.sh
     check_err_exit ${library_path} "Failed to build usrsctp!"
+
     ./build_srtp.sh
     check_err_exit ${library_path} "Failed to build srtp!"
 
+    ./build_sdptransform.sh
+    check_err_exit ${library_path} "Failed to build sdptransform!"
+
     cd ..
 
     glib20_dir=$(realpath "$(pwd)/glibc/linux_${build_os_arch}/")