[smart] fix the vdso building issue in linux

Author: BernardXiong

components/lwp/vdso/SConscript

@@ -24,16 +24,16 @@ else:
     if not os.path.exists(cwd + "/user" + "/arch" +"/" + rtconfig.ARCH + "/vdso.lds"):
         Preprocessing("user/arch/" + rtconfig.ARCH + "/vdso.lds.S", ".lds", CPPPATH=[cwd])
 
-    vdso_file = os.path.join(cwd, 'user',"arch", rtconfig.ARCH, 'SConstruct')
+    vdso_arch = os.path.join(cwd, 'user',"arch", rtconfig.ARCH)
 
     process_env = os.environ.copy()
     if hasattr(rtconfig, 'EXEC_PATH') and rtconfig.EXEC_PATH is not None:
         process_env['EXEC_PATH'] = rtconfig.EXEC_PATH
     if hasattr(rtconfig, 'PREFIX') and rtconfig.PREFIX is not None:
         process_env['CC_PREFIX'] = rtconfig.PREFIX
 
-    command = ["scons", "-f", vdso_file]
-    clean_command = ["scons", "-f", vdso_file, "--clean"] 
+    command = ["scons", "-C", vdso_arch]
+    clean_command = ["scons", "-C", vdso_arch, "--clean"] 
 
     if not GetOption('clean'):    
         result = subprocess.run(command, env=process_env, check=True)

components/lwp/vdso/user/arch/aarch64/SConstruct

@@ -2,7 +2,7 @@ import os
 import sys
 
 arguments = sys.argv[2]
-vdso_usr  = os.path.dirname(arguments)
+vdso_usr  = arguments
 vdso_path = os.path.join(vdso_usr, '..', '..', '..')
 
 EXEC_PATH = os.getenv('RTT_EXEC_PATH') or '/usr/bin'

components/lwp/vdso/user/arch/risc-v/SConstruct

@@ -2,11 +2,11 @@ import os
 import sys
 
 arguments = sys.argv[2]
-vdso_usr  = os.path.dirname(arguments)
+vdso_usr  = arguments
 vdso_path = os.path.join(vdso_usr, '..', '..', '..')
 
 EXEC_PATH = os.getenv('RTT_EXEC_PATH') or '/usr/bin'
-PREFIX    = os.getenv('RTT_CC_PREFIX') or 'aarch64-none-elf-'
+PREFIX    = os.getenv('RTT_CC_PREFIX') or 'riscv64-none-elf-'
 
 CC      = PREFIX + 'gcc'
 CPP     = PREFIX + 'cpp'
@@ -23,8 +23,8 @@ CFLAGS += " -I . -I {vdso_path} ".format(vdso_path=vdso_path)
 src = Glob('*.c')
 env = Environment(tools=['gcc', 'link'],
     AS   = AS,   ASFLAGS = AFLAGS,
-    CC   = CC,   CFLAGS = CFLAGS,
-    CPP  = CPP,  AR   = AR,
+    CC   = CC,   CFLAGS  = CFLAGS,
+    CPP  = CPP,  AR      = AR,
     LINK = LINK, LINKFLAGS = LFLAGS)
 env.PrependENVPath('PATH', EXEC_PATH)