diff --git a/configure b/configure
index bd0e638336..1ee6caa9b2 100755
--- a/configure
+++ b/configure
@@ -298,7 +298,7 @@ echo "ERROR: ${CC} cannot create executables" >&2 ;
 exit 1 ; fi
 printf "checking for dynamic library... "
 HAVE_LIB_DL=0
-for OS in linux syllable sunos darwin beos solaris gnu/kfreebsd ; do
+for OS in linux syllable sunos darwin beos solaris ; do
 if [ "${HOST_OS}" = "${OS}" ]; then
 	HAVE_LIB_DL=1
 	break;
@@ -365,6 +365,9 @@ if [ "$USEROSTYPE" = "auto" ]; then
 if [ "$HOST_OS" = "linux" ]; then
 USEROSTYPE="gnulinux"
 else
+if [ "$HOST_OS" = "gnu" ]; then
+USEROSTYPE="gnulinux"
+else
 if [ "$HOST_OS" = "gnu/kfreebsd" ]; then
 USEROSTYPE="gnulinux"
 else
@@ -378,7 +381,7 @@ if [ "$HOST_OS" = "openbsd" ]; then
 USEROSTYPE="gnulinux"
 else
 if [ "$HOST_OS" = "darwin" ]; then
-USEROSTYPE="darwin"; fi; fi; fi; fi; fi; fi; fi
+USEROSTYPE="darwin"; fi; fi; fi; fi; fi; fi; fi; fi
 SEDFLAGS=" -e '"
 COUNT=0
 for A in ${ENVWORDS} ; do
diff --git a/configure.acr b/configure.acr
index 0054b1b79f..585b3c77df 100644
--- a/configure.acr
+++ b/configure.acr
@@ -39,6 +39,9 @@ IFEQ USEROSTYPE auto ; {
 	IFEQ HOST_OS linux ; {
 		USEROSTYPE = gnulinux ;
 	}{
+	IFEQ HOST_OS gnu ; {
+		USEROSTYPE = gnulinux ;
+	}{
 	IFEQ HOST_OS gnu/kfreebsd ; {
 		USEROSTYPE = gnulinux ;
 	}{
@@ -53,7 +56,7 @@ IFEQ USEROSTYPE auto ; {
 	}{
 	IFEQ HOST_OS darwin ; {
 		USEROSTYPE = darwin ;
-	} } } } } }
+	} } } } } } }
 }
 
 ARG_WITHOUT WITHPIC pic do not build libr as a program independent location ;
diff --git a/libr/include/r_types.h b/libr/include/r_types.h
index b36d7a9827..2156147533 100644
--- a/libr/include/r_types.h
+++ b/libr/include/r_types.h
@@ -72,7 +72,7 @@ typedef void (*PrintfCallback)(const char *str, ...);
 #undef __UNIX__
 #undef __WINDOWS__
 
-#if defined(__linux__) || defined(__APPLE__) 
+#if defined(__linux__) || defined(__APPLE__) || defined(__GNU__)
   #define __BSD__ 0
   #define __UNIX__ 1
 #endif