diff --git a/src/Makefile.am b/src/Makefile.am
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,7 +1,7 @@
 lib_LTLIBRARIES = librs232-@RS232_API_VERSION@.la
 
 
-librs232_@RS232_API_VERSION@_la_LDFLAGS = -no-undefined  -version-info $(RS232_SO_VERSION)
+librs232_@RS232_API_VERSION@_la_LDFLAGS = -no-undefined -fPIC  -version-info $(RS232_SO_VERSION)
 
 rs232_includedir = $(includedir)/rs232-$(RS232_API_VERSION)
 
diff --git a/src/Makefile.in b/src/Makefile.in
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -140,6 +140,7 @@ LIPO = @LIPO@
 LN_S = @LN_S@
 LTLIBOBJS = @LTLIBOBJS@
 MAKEINFO = @MAKEINFO@
+MANIFEST_TOOL = @MANIFEST_TOOL@
 MKDIR_P = @MKDIR_P@
 NM = @NM@
 NMEDIT = @NMEDIT@
@@ -167,6 +168,7 @@ abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
 abs_top_builddir = @abs_top_builddir@
 abs_top_srcdir = @abs_top_srcdir@
+ac_ct_AR = @ac_ct_AR@
 ac_ct_CC = @ac_ct_CC@
 ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
 am__include = @am__include@
@@ -199,7 +201,6 @@ libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
 localstatedir = @localstatedir@
-lt_ECHO = @lt_ECHO@
 mandir = @mandir@
 mkdir_p = @mkdir_p@
 oldincludedir = @oldincludedir@
@@ -216,7 +217,7 @@ top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 lib_LTLIBRARIES = librs232-@RS232_API_VERSION@.la
-librs232_@RS232_API_VERSION@_la_LDFLAGS = -no-undefined  -version-info $(RS232_SO_VERSION)
+librs232_@RS232_API_VERSION@_la_LDFLAGS = -no-undefined -fPIC  -version-info $(RS232_SO_VERSION)
 rs232_includedir = $(includedir)/rs232-$(RS232_API_VERSION)
 rs232_libincludedir = $(libdir)/rs232-$(RS232_API_VERSION)/include
 librs232_@RS232_API_VERSION@_la_SOURCES = \
diff --git a/src/RS232_unix.c b/src/RS232_unix.c
--- a/src/RS232_unix.c
+++ b/src/RS232_unix.c
@@ -18,6 +18,8 @@ rs232port_t rs232open(char* psPortName)
 {
         rs232port_t fd;
 	fd = open(psPortName, O_RDWR | O_NOCTTY | O_NDELAY);
+	fcntl(fd, F_SETFL, 0);
+	//fd = open(psPortName, O_RDWR | O_NOCTTY);
 	#ifdef debug
 		if(fd==-1)printf("can't open Port\n");
 	#endif
@@ -54,7 +56,9 @@ int rs232setup(rs232port_t fd, int ChSiz
 		rs232cfparity(fd, &terminos, Parity);
 		rs232cfnbstop(fd, &terminos, NbStop);
 		rs232cfcsize(fd, &terminos, ChSize);
-		
+		terminos.c_cc[VMIN]=0;
+        	terminos.c_cc[VTIME]=20;
+        	tcflush(fd, TCIFLUSH);
 		#ifdef debug
 			if(tcsetattr(fd, TCSANOW, &terminos)!=0)printf("bad setup\n");
 		#else