diff --git a/components/libc/armlibc/SConscript b/components/libc/compilers/armlibc/SConscript
similarity index 100%
rename from components/libc/armlibc/SConscript
rename to components/libc/compilers/armlibc/SConscript
diff --git a/components/libc/armlibc/fcntl.h b/components/libc/compilers/armlibc/fcntl.h
similarity index 71%
rename from components/libc/armlibc/fcntl.h
rename to components/libc/compilers/armlibc/fcntl.h
index 36c06bbb1d34b40442a40c6d82a4dc2966b84e36..324b73f218bbba4876cab61ae0387772833bb809 100644
--- a/components/libc/armlibc/fcntl.h
+++ b/components/libc/compilers/armlibc/fcntl.h
@@ -1,6 +1,8 @@
 #ifndef FCNTL_H__
 #define FCNTL_H__
 
+#ifdef RT_USING_DFS
 #include <dfs_posix.h>
+#endif
 
 #endif
diff --git a/components/libc/armlibc/libc_syms.c b/components/libc/compilers/armlibc/libc_syms.c
similarity index 100%
rename from components/libc/armlibc/libc_syms.c
rename to components/libc/compilers/armlibc/libc_syms.c
diff --git a/components/libc/armlibc/mem_std.c b/components/libc/compilers/armlibc/mem_std.c
similarity index 100%
rename from components/libc/armlibc/mem_std.c
rename to components/libc/compilers/armlibc/mem_std.c
diff --git a/components/libc/armlibc/stubs.c b/components/libc/compilers/armlibc/stubs.c
similarity index 100%
rename from components/libc/armlibc/stubs.c
rename to components/libc/compilers/armlibc/stubs.c
diff --git a/components/libc/armlibc/sys/README.md b/components/libc/compilers/armlibc/sys/README.md
similarity index 100%
rename from components/libc/armlibc/sys/README.md
rename to components/libc/compilers/armlibc/sys/README.md
diff --git a/components/libc/armlibc/sys/errno.h b/components/libc/compilers/armlibc/sys/errno.h
similarity index 100%
rename from components/libc/armlibc/sys/errno.h
rename to components/libc/compilers/armlibc/sys/errno.h
diff --git a/components/libc/armlibc/sys/stat.h b/components/libc/compilers/armlibc/sys/stat.h
similarity index 100%
rename from components/libc/armlibc/sys/stat.h
rename to components/libc/compilers/armlibc/sys/stat.h
diff --git a/components/libc/armlibc/sys/time.h b/components/libc/compilers/armlibc/sys/time.h
similarity index 100%
rename from components/libc/armlibc/sys/time.h
rename to components/libc/compilers/armlibc/sys/time.h
diff --git a/components/libc/armlibc/sys/types.h b/components/libc/compilers/armlibc/sys/types.h
similarity index 100%
rename from components/libc/armlibc/sys/types.h
rename to components/libc/compilers/armlibc/sys/types.h
diff --git a/components/libc/armlibc/sys/unistd.h b/components/libc/compilers/armlibc/sys/unistd.h
similarity index 100%
rename from components/libc/armlibc/sys/unistd.h
rename to components/libc/compilers/armlibc/sys/unistd.h
diff --git a/components/libc/armlibc/unistd.h b/components/libc/compilers/armlibc/unistd.h
similarity index 100%
rename from components/libc/armlibc/unistd.h
rename to components/libc/compilers/armlibc/unistd.h
diff --git a/components/libc/dlib/README.md b/components/libc/compilers/dlib/README.md
similarity index 100%
rename from components/libc/dlib/README.md
rename to components/libc/compilers/dlib/README.md
diff --git a/components/libc/dlib/SConscript b/components/libc/compilers/dlib/SConscript
similarity index 100%
rename from components/libc/dlib/SConscript
rename to components/libc/compilers/dlib/SConscript
diff --git a/components/libc/dlib/environ.c b/components/libc/compilers/dlib/environ.c
similarity index 100%
rename from components/libc/dlib/environ.c
rename to components/libc/compilers/dlib/environ.c
diff --git a/components/libc/dlib/rmtx.c b/components/libc/compilers/dlib/rmtx.c
similarity index 100%
rename from components/libc/dlib/rmtx.c
rename to components/libc/compilers/dlib/rmtx.c
diff --git a/components/libc/dlib/sys/README.md b/components/libc/compilers/dlib/sys/README.md
similarity index 100%
rename from components/libc/dlib/sys/README.md
rename to components/libc/compilers/dlib/sys/README.md
diff --git a/components/libc/dlib/sys/errno.h b/components/libc/compilers/dlib/sys/errno.h
similarity index 100%
rename from components/libc/dlib/sys/errno.h
rename to components/libc/compilers/dlib/sys/errno.h
diff --git a/components/libc/dlib/sys/time.h b/components/libc/compilers/dlib/sys/time.h
similarity index 100%
rename from components/libc/dlib/sys/time.h
rename to components/libc/compilers/dlib/sys/time.h
diff --git a/components/libc/dlib/sys/types.h b/components/libc/compilers/dlib/sys/types.h
similarity index 100%
rename from components/libc/dlib/sys/types.h
rename to components/libc/compilers/dlib/sys/types.h
diff --git a/components/libc/dlib/sys/unistd.h b/components/libc/compilers/dlib/sys/unistd.h
similarity index 100%
rename from components/libc/dlib/sys/unistd.h
rename to components/libc/compilers/dlib/sys/unistd.h
diff --git a/components/libc/dlib/syscall_close.c b/components/libc/compilers/dlib/syscall_close.c
similarity index 100%
rename from components/libc/dlib/syscall_close.c
rename to components/libc/compilers/dlib/syscall_close.c
diff --git a/components/libc/dlib/syscall_lseek.c b/components/libc/compilers/dlib/syscall_lseek.c
similarity index 100%
rename from components/libc/dlib/syscall_lseek.c
rename to components/libc/compilers/dlib/syscall_lseek.c
diff --git a/components/libc/dlib/syscall_mem.c b/components/libc/compilers/dlib/syscall_mem.c
similarity index 100%
rename from components/libc/dlib/syscall_mem.c
rename to components/libc/compilers/dlib/syscall_mem.c
diff --git a/components/libc/dlib/syscall_open.c b/components/libc/compilers/dlib/syscall_open.c
similarity index 100%
rename from components/libc/dlib/syscall_open.c
rename to components/libc/compilers/dlib/syscall_open.c
diff --git a/components/libc/dlib/syscall_read.c b/components/libc/compilers/dlib/syscall_read.c
similarity index 100%
rename from components/libc/dlib/syscall_read.c
rename to components/libc/compilers/dlib/syscall_read.c
diff --git a/components/libc/dlib/syscall_remove.c b/components/libc/compilers/dlib/syscall_remove.c
similarity index 100%
rename from components/libc/dlib/syscall_remove.c
rename to components/libc/compilers/dlib/syscall_remove.c
diff --git a/components/libc/dlib/syscall_write.c b/components/libc/compilers/dlib/syscall_write.c
similarity index 100%
rename from components/libc/dlib/syscall_write.c
rename to components/libc/compilers/dlib/syscall_write.c
diff --git a/components/libc/dlib/syscalls.h b/components/libc/compilers/dlib/syscalls.h
similarity index 100%
rename from components/libc/dlib/syscalls.h
rename to components/libc/compilers/dlib/syscalls.h
diff --git a/components/libc/minilibc/SConscript b/components/libc/compilers/minilibc/SConscript
similarity index 100%
rename from components/libc/minilibc/SConscript
rename to components/libc/compilers/minilibc/SConscript
diff --git a/components/libc/minilibc/ctype.c b/components/libc/compilers/minilibc/ctype.c
similarity index 100%
rename from components/libc/minilibc/ctype.c
rename to components/libc/compilers/minilibc/ctype.c
diff --git a/components/libc/minilibc/ctype.h b/components/libc/compilers/minilibc/ctype.h
similarity index 100%
rename from components/libc/minilibc/ctype.h
rename to components/libc/compilers/minilibc/ctype.h
diff --git a/components/libc/minilibc/errno.h b/components/libc/compilers/minilibc/errno.h
similarity index 100%
rename from components/libc/minilibc/errno.h
rename to components/libc/compilers/minilibc/errno.h
diff --git a/components/libc/minilibc/inttypes.h b/components/libc/compilers/minilibc/inttypes.h
similarity index 100%
rename from components/libc/minilibc/inttypes.h
rename to components/libc/compilers/minilibc/inttypes.h
diff --git a/components/libc/minilibc/math.c b/components/libc/compilers/minilibc/math.c
similarity index 100%
rename from components/libc/minilibc/math.c
rename to components/libc/compilers/minilibc/math.c
diff --git a/components/libc/minilibc/math.h b/components/libc/compilers/minilibc/math.h
similarity index 100%
rename from components/libc/minilibc/math.h
rename to components/libc/compilers/minilibc/math.h
diff --git a/components/libc/minilibc/qsort.c b/components/libc/compilers/minilibc/qsort.c
similarity index 100%
rename from components/libc/minilibc/qsort.c
rename to components/libc/compilers/minilibc/qsort.c
diff --git a/components/libc/minilibc/rand.c b/components/libc/compilers/minilibc/rand.c
similarity index 100%
rename from components/libc/minilibc/rand.c
rename to components/libc/compilers/minilibc/rand.c
diff --git a/components/libc/minilibc/stddef.h b/components/libc/compilers/minilibc/stddef.h
similarity index 100%
rename from components/libc/minilibc/stddef.h
rename to components/libc/compilers/minilibc/stddef.h
diff --git a/components/libc/minilibc/stdint.h b/components/libc/compilers/minilibc/stdint.h
similarity index 100%
rename from components/libc/minilibc/stdint.h
rename to components/libc/compilers/minilibc/stdint.h
diff --git a/components/libc/minilibc/stdio.h b/components/libc/compilers/minilibc/stdio.h
similarity index 100%
rename from components/libc/minilibc/stdio.h
rename to components/libc/compilers/minilibc/stdio.h
diff --git a/components/libc/minilibc/stdlib.c b/components/libc/compilers/minilibc/stdlib.c
similarity index 100%
rename from components/libc/minilibc/stdlib.c
rename to components/libc/compilers/minilibc/stdlib.c
diff --git a/components/libc/minilibc/stdlib.h b/components/libc/compilers/minilibc/stdlib.h
similarity index 100%
rename from components/libc/minilibc/stdlib.h
rename to components/libc/compilers/minilibc/stdlib.h
diff --git a/components/libc/minilibc/string.c b/components/libc/compilers/minilibc/string.c
similarity index 100%
rename from components/libc/minilibc/string.c
rename to components/libc/compilers/minilibc/string.c
diff --git a/components/libc/minilibc/string.h b/components/libc/compilers/minilibc/string.h
similarity index 100%
rename from components/libc/minilibc/string.h
rename to components/libc/compilers/minilibc/string.h
diff --git a/components/libc/minilibc/sys/stat.h b/components/libc/compilers/minilibc/sys/stat.h
similarity index 100%
rename from components/libc/minilibc/sys/stat.h
rename to components/libc/compilers/minilibc/sys/stat.h
diff --git a/components/libc/minilibc/sys/time.h b/components/libc/compilers/minilibc/sys/time.h
similarity index 100%
rename from components/libc/minilibc/sys/time.h
rename to components/libc/compilers/minilibc/sys/time.h
diff --git a/components/libc/minilibc/sys/types.h b/components/libc/compilers/minilibc/sys/types.h
similarity index 100%
rename from components/libc/minilibc/sys/types.h
rename to components/libc/compilers/minilibc/sys/types.h
diff --git a/components/libc/minilibc/time.c b/components/libc/compilers/minilibc/time.c
similarity index 100%
rename from components/libc/minilibc/time.c
rename to components/libc/compilers/minilibc/time.c
diff --git a/components/libc/minilibc/time.h b/components/libc/compilers/minilibc/time.h
similarity index 100%
rename from components/libc/minilibc/time.h
rename to components/libc/compilers/minilibc/time.h
diff --git a/components/libc/newlib/SConscript b/components/libc/compilers/newlib/SConscript
similarity index 100%
rename from components/libc/newlib/SConscript
rename to components/libc/compilers/newlib/SConscript
diff --git a/components/libc/newlib/libc.c b/components/libc/compilers/newlib/libc.c
similarity index 100%
rename from components/libc/newlib/libc.c
rename to components/libc/compilers/newlib/libc.c
diff --git a/components/libc/newlib/libc.h b/components/libc/compilers/newlib/libc.h
similarity index 100%
rename from components/libc/newlib/libc.h
rename to components/libc/compilers/newlib/libc.h
diff --git a/components/libc/newlib/libc_sym.c b/components/libc/compilers/newlib/libc_sym.c
similarity index 100%
rename from components/libc/newlib/libc_sym.c
rename to components/libc/compilers/newlib/libc_sym.c
diff --git a/components/libc/newlib/sys/dirent.h b/components/libc/compilers/newlib/sys/dirent.h
similarity index 100%
rename from components/libc/newlib/sys/dirent.h
rename to components/libc/compilers/newlib/sys/dirent.h
diff --git a/components/libc/newlib/sys/fcntl.h b/components/libc/compilers/newlib/sys/fcntl.h
similarity index 95%
rename from components/libc/newlib/sys/fcntl.h
rename to components/libc/compilers/newlib/sys/fcntl.h
index 499c67260e09356a5107da2173a02811b31e04bf..a53ca808b29b3b95f6afe8a7a91454a751d54973 100644
--- a/components/libc/newlib/sys/fcntl.h
+++ b/components/libc/compilers/newlib/sys/fcntl.h
@@ -13,4 +13,6 @@
 #define O_DIRECTORY     0x0200000
 #define O_BINARY        0x0008000
 
+#include <unistd.h>
+
 #endif
diff --git a/components/libc/newlib/sys/statfs.h b/components/libc/compilers/newlib/sys/statfs.h
similarity index 100%
rename from components/libc/newlib/sys/statfs.h
rename to components/libc/compilers/newlib/sys/statfs.h
diff --git a/components/libc/newlib/syscalls.c b/components/libc/compilers/newlib/syscalls.c
similarity index 100%
rename from components/libc/newlib/syscalls.c
rename to components/libc/compilers/newlib/syscalls.c