diff --git a/Makefile.am b/Makefile.am
index 05cb453..1b6385d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -18,4 +18,4 @@ rkdeveloptool_SOURCES = main.cpp \
 rkdeveloptool_LDADD = $(LIBUSB1_LIBS)
 
 clean-local::
-	$(RM) -fr log
+	rm -fr log
diff --git a/configure.ac b/configure.ac
index 03d3007..16f6f9c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,6 +16,18 @@ AC_PROG_MAKE_SET
 AC_PROG_INSTALL
 AC_PROG_LN_S
 
+AC_CANONICAL_HOST
+case "$host_os" in
+	openbsd*)
+		CPPFLAGS="$CFLAGS -I/usr/local/include"
+		LDFLAGS="$LDFLAGS -L/usr/local/lib"
+		;;
+	*)
+		;;
+esac
+
+AC_SEARCH_LIBS(iconv, iconv)
+
 PKG_CHECK_MODULES(LIBUSB1,libusb-1.0)
 
 AC_CONFIG_FILES([Makefile])
diff --git a/main.cpp b/main.cpp
index 477e9be..fea5b7f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -832,7 +832,7 @@ int MakeIDBlockData(PBYTE pDDR, PBYTE pLoader, PBYTE lpIDBlock, USHORT usFlashDa
 
 bool check_device_type(STRUCT_RKDEVICE_DESC &dev, UINT uiSupportType)
 {
-	if ((dev.emUsbType & uiSupportType) == dev.emUsbType)
+	if (((UINT)dev.emUsbType & uiSupportType) == (UINT)dev.emUsbType)
 		return true;
 	else
 	{
@@ -1157,7 +1157,7 @@ static bool parseOpts(void) {
 	file = fopen(configPath, "r");
 	if (!file) {
 		fprintf(stderr, "config (%s) not found!\n", configPath);
-		if (configPath == (char*)DEF_CONFIG_FILE) {
+		if (strcmp(configPath, (char*)DEF_CONFIG_FILE) == 0) {
 			file = fopen(DEF_CONFIG_FILE, "w");
 			if (file) {
 				fprintf(stderr, "creating defconfig\n");