diff --git a/bsp/ls1bdev/Kconfig b/bsp/ls1bdev/Kconfig
index c9196af29d85209f0558378a756a729c26e56f44..b02aee337a32bf2320c7258c067ca2e9e07b3b7e 100644
--- a/bsp/ls1bdev/Kconfig
+++ b/bsp/ls1bdev/Kconfig
@@ -18,10 +18,6 @@ config PKGS_DIR
 source "$RTT_DIR/Kconfig"
 source "$PKGS_DIR/Kconfig"
 
-config SOC_LS
-    bool
-    default y
-
 config SOC_LS1B
     bool
     select RT_USING_COMPONENTS_INIT
diff --git a/bsp/ls1cdev/Kconfig b/bsp/ls1cdev/Kconfig
index 59f7c4332317a6f31c0dcce30aa2580c13e4760d..3fb6e3bbdf174662dc4c892c3cb17bed78429ef5 100644
--- a/bsp/ls1cdev/Kconfig
+++ b/bsp/ls1cdev/Kconfig
@@ -19,10 +19,6 @@ source "$RTT_DIR/Kconfig"
 source "$RTT_DIR/libcpu/mips/common/Kconfig"
 source "$PKGS_DIR/Kconfig"
 
-config SOC_LS
-    bool
-    default y
-
 config SOC_LS1C300
     bool
     select RT_USING_COMPONENTS_INIT
diff --git a/bsp/ls2kdev/Kconfig b/bsp/ls2kdev/Kconfig
index 57dd99e53abb9e56ecc4056a08c4b7ee8dccafa8..fc2dfe1328d737567872f1a19da4e0e70d259286 100644
--- a/bsp/ls2kdev/Kconfig
+++ b/bsp/ls2kdev/Kconfig
@@ -22,10 +22,6 @@ source "$RTT_DIR/Kconfig"
 source "$RTT_DIR/libcpu/mips/common/Kconfig"
 source "$PKGS_DIR/Kconfig"
 
-config SOC_LS
-    bool
-    default y
-
 config SOC_LS2K1000
     bool
     select ARCH_MIPS64
diff --git a/components/finsh/msh.c b/components/finsh/msh.c
index 86985c561cb11752b4325b33ee0f90356366b402..18182ca2646a094587c3cb9ad2c985550f06ce24 100644
--- a/components/finsh/msh.c
+++ b/components/finsh/msh.c
@@ -257,21 +257,6 @@ int msh_exec_module(const char *cmd_line, int size)
     rt_free(pg_name);
     return ret;
 }
-
-int system(const char *command)
-{
-    int ret = -RT_ENOMEM;
-    char *cmd = rt_strdup(command);
-
-    if (cmd)
-    {
-        ret = msh_exec(cmd, rt_strlen(cmd));
-        rt_free(cmd);
-    }
-
-    return ret;
-}
-RTM_EXPORT(system);
 #endif /* defined(RT_USING_MODULE) && defined(RT_USING_DFS) */
 
 static int _msh_exec_cmd(char *cmd, rt_size_t length, int *retp)
diff --git a/components/libc/compilers/armlibc/syscalls.c b/components/libc/compilers/armlibc/syscalls.c
index 7d8ec2e8b44e5e0501aa2daf9cf5512f5a47e0c6..3b1627d82a8220433dd828b03d013b13e9b6d3f4 100644
--- a/components/libc/compilers/armlibc/syscalls.c
+++ b/components/libc/compilers/armlibc/syscalls.c
@@ -319,16 +319,6 @@ int remove(const char *filename)
 #endif
 }
 
-#if defined(RT_USING_FINSH) && defined(RT_USING_MODULE) && defined(RT_USING_DFS)
-/* use system(const char *string) implementation in the msh */
-#else
-int system(const char *string)
-{
-    extern int __rt_libc_system(const char *string);
-    return __rt_libc_system(string);
-}
-#endif
-
 #ifdef __MICROLIB
 #include <stdio.h>
 
diff --git a/components/libc/compilers/common/partial/ls/SConscript b/components/libc/compilers/common/partial/ls/SConscript
deleted file mode 100644
index 2665bee0787a893a116698bc62913fe7121457ce..0000000000000000000000000000000000000000
--- a/components/libc/compilers/common/partial/ls/SConscript
+++ /dev/null
@@ -1,23 +0,0 @@
-from shutil import copy
-from building import *
-
-Import('rtconfig')
-
-src   = []
-cwd   = GetCurrentDir()
-CPPPATH = [cwd]
-group = []
-
-if rtconfig.PLATFORM == 'gcc' and GetDepend('SOC_LS'):
-    try:
-        # There is no 'sys/select.h' in these bsp's gcc toolchain; thus, we need to copy this file from 'nogcc/sys/select.h'
-        copy("../../nogcc/sys/select.h", "./sys/select.h")
-    except:
-        pass
-
-    if GetDepend('RT_USING_LIBC'):
-        src += Glob('*.c')
-
-    group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH)
-
-Return('group')
diff --git a/components/libc/compilers/common/partial/ls/readme.md b/components/libc/compilers/common/partial/ls/readme.md
deleted file mode 100644
index fa68e1e84a43a7f3f2efdfd9b6437d95a3b24a78..0000000000000000000000000000000000000000
--- a/components/libc/compilers/common/partial/ls/readme.md
+++ /dev/null
@@ -1,9 +0,0 @@
-This folder will be included when compiling the BSPs as follow:
-
-- ls1bdev
-- ls1cdev
-- ls2kdev
-
-These files will be generated by scons automatically , and **DO NOT** change them:
-
-- sys/select.h
\ No newline at end of file
diff --git a/components/libc/compilers/common/stdlib.c b/components/libc/compilers/common/stdlib.c
index 16a13afb83a3916ec6605dc251c547c59f74fb7a..6cc0b9fdacd199a32e030829ec7551747810bdec 100644
--- a/components/libc/compilers/common/stdlib.c
+++ b/components/libc/compilers/common/stdlib.c
@@ -25,11 +25,21 @@ void __rt_libc_exit(int status)
     }
 }
 
-int __rt_libc_system(const char *string)
-{
 #ifdef RT_USING_MSH
+int system(const char *command)
+{
     extern int msh_exec(char *cmd, rt_size_t length);
-    msh_exec((char*)string, rt_strlen(string));
-#endif
-    return 0;
+
+    int ret = -RT_ENOMEM;
+    char *cmd = rt_strdup(command);
+
+    if (cmd)
+    {
+        ret = msh_exec(cmd, rt_strlen(cmd));
+        rt_free(cmd);
+    }
+
+    return ret;
 }
+RTM_EXPORT(system);
+#endif
diff --git a/components/libc/compilers/dlib/syscalls.c b/components/libc/compilers/dlib/syscalls.c
index e1c9562b3a81bab6a3b71d16db6974692e144ad7..1ee6a3bc12ba4b10193a2896e03af7afb96af3ca 100644
--- a/components/libc/compilers/dlib/syscalls.c
+++ b/components/libc/compilers/dlib/syscalls.c
@@ -6,7 +6,6 @@
  * Change Logs:
  * Date           Author       Notes
  * 2021-02-13     Meco Man     implement exit() and abort()
- * 2021-02-20     Meco Man     add system()
  */
 #include <rtthread.h>
 
@@ -17,9 +16,3 @@ void __exit (int status)
     __rt_libc_exit(status);
     while(1);
 }
-
-int system(const char * string)
-{
-    extern int __rt_libc_system(const char *string);
-    return __rt_libc_system(string);
-}
diff --git a/components/libc/compilers/common/partial/SConscript b/components/libc/compilers/gcc/SConscript
similarity index 100%
rename from components/libc/compilers/common/partial/SConscript
rename to components/libc/compilers/gcc/SConscript
diff --git a/components/libc/compilers/newlib/README.md b/components/libc/compilers/gcc/newlib/README.md
similarity index 71%
rename from components/libc/compilers/newlib/README.md
rename to components/libc/compilers/gcc/newlib/README.md
index 385f329a4f3600832055a94fac6eaad270e2b033..62172e6a5566673e1649acf8e64a18c1e56a7317 100644
--- a/components/libc/compilers/newlib/README.md
+++ b/components/libc/compilers/gcc/newlib/README.md
@@ -6,4 +6,5 @@ Please define RT_USING_LIBC and compile RT-Thread with GCC compiler.
 
 ## More Information
 
-https://sourceware.org/newlib/libc.html#Reentrancy
\ No newline at end of file
+https://sourceware.org/newlib/libc.html#Reentrancy
+
diff --git a/components/libc/compilers/newlib/SConscript b/components/libc/compilers/gcc/newlib/SConscript
similarity index 100%
rename from components/libc/compilers/newlib/SConscript
rename to components/libc/compilers/gcc/newlib/SConscript
diff --git a/components/libc/compilers/newlib/libc.c b/components/libc/compilers/gcc/newlib/libc.c
similarity index 100%
rename from components/libc/compilers/newlib/libc.c
rename to components/libc/compilers/gcc/newlib/libc.c
diff --git a/components/libc/compilers/newlib/libc.h b/components/libc/compilers/gcc/newlib/libc.h
similarity index 100%
rename from components/libc/compilers/newlib/libc.h
rename to components/libc/compilers/gcc/newlib/libc.h
diff --git a/components/libc/compilers/newlib/libc_syms.c b/components/libc/compilers/gcc/newlib/libc_syms.c
similarity index 100%
rename from components/libc/compilers/newlib/libc_syms.c
rename to components/libc/compilers/gcc/newlib/libc_syms.c
diff --git a/components/libc/compilers/newlib/machine/time.h b/components/libc/compilers/gcc/newlib/machine/time.h
similarity index 100%
rename from components/libc/compilers/newlib/machine/time.h
rename to components/libc/compilers/gcc/newlib/machine/time.h
diff --git a/components/libc/compilers/newlib/stdio.c b/components/libc/compilers/gcc/newlib/stdio.c
similarity index 100%
rename from components/libc/compilers/newlib/stdio.c
rename to components/libc/compilers/gcc/newlib/stdio.c
diff --git a/components/libc/compilers/newlib/syscalls.c b/components/libc/compilers/gcc/newlib/syscalls.c
similarity index 97%
rename from components/libc/compilers/newlib/syscalls.c
rename to components/libc/compilers/gcc/newlib/syscalls.c
index 4c1dc82ad376313b69e20b59d9009dcf0e6bf673..f5a2c16ecc774e36d30bb5e62a87e717712ff9b0 100644
--- a/components/libc/compilers/newlib/syscalls.c
+++ b/components/libc/compilers/gcc/newlib/syscalls.c
@@ -85,6 +85,7 @@ void __libc_init_array(void)
 #ifdef RT_USING_LIBC
 #include <reent.h>
 #include <stdio.h>
+#include "libc.h"
 #ifdef RT_USING_DFS
 #include <dfs_posix.h>
 #endif
@@ -92,10 +93,6 @@ void __libc_init_array(void)
 #include <dlmodule.h>
 #endif
 
-#define DBG_TAG    "newlib.syscalls"
-#define DBG_LVL    DBG_INFO
-#include <rtdbg.h>
-
 /* Reentrant versions of system calls.  */
 
 #ifndef _REENT_ONLY
@@ -311,12 +308,6 @@ _ssize_t _write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
 #endif
 }
 
-void _system(const char *s)
-{
-    extern int __rt_libc_system(const char *string);
-    __rt_libc_system(s);
-}
-
 /* for exit() and abort() */
 __attribute__ ((noreturn)) void _exit (int status)
 {
diff --git a/components/libc/compilers/gcc/partial/SConscript b/components/libc/compilers/gcc/partial/SConscript
new file mode 100644
index 0000000000000000000000000000000000000000..4c815c49b835a3a5ea61f337dc17154dd316d7d1
--- /dev/null
+++ b/components/libc/compilers/gcc/partial/SConscript
@@ -0,0 +1,15 @@
+# RT-Thread building script for bridge
+
+import os
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')
diff --git a/components/libc/compilers/gcc/partial/mips/SConscript b/components/libc/compilers/gcc/partial/mips/SConscript
new file mode 100644
index 0000000000000000000000000000000000000000..7651233d461ca15f48ccaf4010e45bc6b8fe345a
--- /dev/null
+++ b/components/libc/compilers/gcc/partial/mips/SConscript
@@ -0,0 +1,20 @@
+from shutil import copy
+from building import *
+
+Import('rtconfig')
+
+src   = []
+cwd   = GetCurrentDir()
+CPPPATH = [cwd]
+group = []
+
+if rtconfig.PLATFORM == 'gcc' and ('mips' in rtconfig.PREFIX): # identify mips gcc tool chain
+    try:
+        # There is no 'sys/select.h' in tthe mips gcc toolchain; it will be copied from 'nogcc/sys/select.h'
+        copy("../../../common/nogcc/sys/select.h", "./sys/select.h")
+    except:
+        pass
+
+    group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH)
+
+Return('group')
diff --git a/components/libc/compilers/gcc/partial/mips/readme.md b/components/libc/compilers/gcc/partial/mips/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..a3eeb06c5dae22c3e2b40eb0a54902be23891ed7
--- /dev/null
+++ b/components/libc/compilers/gcc/partial/mips/readme.md
@@ -0,0 +1,4 @@
+These files don't exist in the mips gcc toolchain. They will be generated by scons automatically , and **DO NOT** change them:
+
+- sys/select.h
+
diff --git a/components/libc/compilers/common/partial/ls/sys/select.h b/components/libc/compilers/gcc/partial/mips/sys/select.h
similarity index 100%
rename from components/libc/compilers/common/partial/ls/sys/select.h
rename to components/libc/compilers/gcc/partial/mips/sys/select.h
diff --git a/components/libc/compilers/gcc/partial/readme.md b/components/libc/compilers/gcc/partial/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..959fc29f35c4c1fbb3bdeac9f924aa6a3886934d
--- /dev/null
+++ b/components/libc/compilers/gcc/partial/readme.md
@@ -0,0 +1,2 @@
+This folder is for some particular targets.
+