diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6824167..4853039 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,7 @@ project(v4l2rtspserver)
 option(COVERAGE "Coverage" OFF)
 
 set(ALSA ON CACHE BOOL "use ALSA if available")
+set(STATICSTDCPP ON CACHE BOOL "use gcc static lib if available")
 set(LOG4CPP OFF CACHE BOOL "use log4cpp if available")
 set(LIVE555URL http://www.live555.com/liveMedia/public/live555-latest.tar.gz CACHE STRING "live555 url")
 set(LIVE555CFLAGS -DBSD=1 -DSOCKLEN_T=socklen_t -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -DALLOW_RTSP_SERVER_PORT_REUSE=1 CACHE STRING "live555 CFGLAGS")
@@ -19,7 +20,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake/")
 # set version based on git
 find_package(Git)
 if(GIT_FOUND)
-    EXECUTE_PROCESS(COMMAND ${GIT_EXECUTABLE} describe --tags --always --dirty OUTPUT_VARIABLE VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
+    EXECUTE_PROCESS(COMMAND ${GIT_EXECUTABLE} -C ${CMAKE_CURRENT_SOURCE_DIR} describe --tags --always --dirty OUTPUT_VARIABLE VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
     STRING(REGEX REPLACE "^v(.*)" "\\1" VERSION "${VERSION}")
     add_definitions("-DVERSION=\"${VERSION}\"")
 endif()
@@ -118,14 +119,16 @@ target_include_directories(libv4l2rtspserver PUBLIC libv4l2cpp/inc)
 target_link_libraries (libv4l2rtspserver libv4l2cpp) 
 
 # static link of stdc++ if available
-include(CheckCXXCompilerFlag)
-CHECK_CXX_COMPILER_FLAG("-static-libgcc" CXX_SUPPORTS_STATIC_LIBGCC)
-if (CXX_SUPPORTS_STATIC_LIBGCC) 
-  target_link_libraries (${PROJECT_NAME} -static-libgcc)
-endif()    
-CHECK_CXX_COMPILER_FLAG("-static-libstdc++" CXX_SUPPORTS_STATIC_LIBSTDCPP)
-if (CXX_SUPPORTS_STATIC_LIBSTDCPP) 
-  target_link_libraries (${PROJECT_NAME} -static-libstdc++)
+if (STATICSTDCPP)
+  include(CheckCXXCompilerFlag)
+  CHECK_CXX_COMPILER_FLAG("-static-libgcc" CXX_SUPPORTS_STATIC_LIBGCC)
+  if (CXX_SUPPORTS_STATIC_LIBGCC) 
+    target_link_libraries (${PROJECT_NAME} -static-libgcc)
+  endif()    
+  CHECK_CXX_COMPILER_FLAG("-static-libstdc++" CXX_SUPPORTS_STATIC_LIBSTDCPP)
+  if (CXX_SUPPORTS_STATIC_LIBSTDCPP) 
+    target_link_libraries (${PROJECT_NAME} -static-libstdc++)
+  endif()
 endif()
 
 #testing
diff --git a/main.cpp b/main.cpp
index a26cf8b..9581258 100755
--- a/main.cpp
+++ b/main.cpp
@@ -136,7 +136,7 @@ int main(int argc, char** argv)
 
 	// decode parameters
 	int c = 0;     
-	while ((c = getopt (argc, argv, "v::Q:O:b:" "I:P:p:m::u:M:ct:S::x:" "R:U:" "rwBsf::F:W:H:G:" "A:C:a:" "Vh")) != -1)
+	while ((c = getopt (argc, argv, "v::Q:O:b:" "I:P:p:m::u:M::ct:S::x:" "R:U:" "rwBsf::F:W:H:G:" "A:C:a:" "Vh")) != -1)
 	{
 		switch (c)
 		{
@@ -151,7 +151,7 @@ int main(int argc, char** argv)
 			case 'p':	rtspOverHTTPPort        = atoi(optarg); break;
 			case 'u':	url                     = optarg; break;
 			case 'm':	multicast = true; murl  = optarg ? optarg : murl; break;
-			case 'M':	multicast = true; maddr = optarg; break;
+			case 'M':	multicast = true; maddr = optarg ? optarg : maddr; break;
 			case 'c':	repeatConfig            = false; break;
 			case 't':	timeout                 = atoi(optarg); break;
 			case 'S':	hlsSegment              = optarg ? atoi(optarg) : defaultHlsSegment; break;
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index c26f9b8..57a67bf 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -38,4 +38,4 @@
     v4l2rtspserver:
       command: v4l2rtspserver -b $SNAP/share/v4l2rtspserver/ -P "$(snapctl get rtsp-port)" "$(snapctl get devices)"
       daemon: simple   
-      plugs: [network-bind]
+      plugs: [network-bind, camera, alsa]