diff --git a/bsp/stm32/stm32l412-st-nucleo/SConstruct b/bsp/stm32/stm32l412-st-nucleo/SConstruct
index 3a96b55123..4494a55cd3 100644
--- a/bsp/stm32/stm32l412-st-nucleo/SConstruct
+++ b/bsp/stm32/stm32l412-st-nucleo/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l431-BearPi/SConstruct b/bsp/stm32/stm32l431-BearPi/SConstruct
index 914be2d006..7ec774fd90 100644
--- a/bsp/stm32/stm32l431-BearPi/SConstruct
+++ b/bsp/stm32/stm32l431-BearPi/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l431-tencentos-tiny-EVB_MX+/SConstruct b/bsp/stm32/stm32l431-tencentos-tiny-EVB_MX+/SConstruct
index 254f545185..b0c451de58 100644
--- a/bsp/stm32/stm32l431-tencentos-tiny-EVB_MX+/SConstruct
+++ b/bsp/stm32/stm32l431-tencentos-tiny-EVB_MX+/SConstruct
@@ -35,6 +35,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l432-st-nucleo/SConstruct b/bsp/stm32/stm32l432-st-nucleo/SConstruct
index 3a96b55123..4494a55cd3 100644
--- a/bsp/stm32/stm32l432-st-nucleo/SConstruct
+++ b/bsp/stm32/stm32l432-st-nucleo/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l433-ali-startkit/SConstruct b/bsp/stm32/stm32l433-ali-startkit/SConstruct
index 3a96b55123..4494a55cd3 100644
--- a/bsp/stm32/stm32l433-ali-startkit/SConstruct
+++ b/bsp/stm32/stm32l433-ali-startkit/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l433-st-nucleo/SConstruct b/bsp/stm32/stm32l433-st-nucleo/SConstruct
index 3a96b55123..4494a55cd3 100644
--- a/bsp/stm32/stm32l433-st-nucleo/SConstruct
+++ b/bsp/stm32/stm32l433-st-nucleo/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l452-st-nucleo/SConstruct b/bsp/stm32/stm32l452-st-nucleo/SConstruct
index 3a96b55123..4494a55cd3 100644
--- a/bsp/stm32/stm32l452-st-nucleo/SConstruct
+++ b/bsp/stm32/stm32l452-st-nucleo/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l475-atk-pandora/SConstruct b/bsp/stm32/stm32l475-atk-pandora/SConstruct
index e7583feae9..5740e5b8bd 100644
--- a/bsp/stm32/stm32l475-atk-pandora/SConstruct
+++ b/bsp/stm32/stm32l475-atk-pandora/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l475-st-discovery/SConstruct b/bsp/stm32/stm32l475-st-discovery/SConstruct
index 9cf3fc6180..b55f8c12b7 100644
--- a/bsp/stm32/stm32l475-st-discovery/SConstruct
+++ b/bsp/stm32/stm32l475-st-discovery/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rtthread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l476-st-nucleo/SConstruct b/bsp/stm32/stm32l476-st-nucleo/SConstruct
index 3a96b55123..4494a55cd3 100644
--- a/bsp/stm32/stm32l476-st-nucleo/SConstruct
+++ b/bsp/stm32/stm32l476-st-nucleo/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l496-ali-developer/SConstruct b/bsp/stm32/stm32l496-ali-developer/SConstruct
index 3a96b55123..4494a55cd3 100644
--- a/bsp/stm32/stm32l496-ali-developer/SConstruct
+++ b/bsp/stm32/stm32l496-ali-developer/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l496-st-discovery/SConstruct b/bsp/stm32/stm32l496-st-discovery/SConstruct
index 3a96b55123..4494a55cd3 100644
--- a/bsp/stm32/stm32l496-st-discovery/SConstruct
+++ b/bsp/stm32/stm32l496-st-discovery/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l496-st-nucleo/SConstruct b/bsp/stm32/stm32l496-st-nucleo/SConstruct
index 3a96b55123..4494a55cd3 100644
--- a/bsp/stm32/stm32l496-st-nucleo/SConstruct
+++ b/bsp/stm32/stm32l496-st-nucleo/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l4r5-st-nucleo/SConstruct b/bsp/stm32/stm32l4r5-st-nucleo/SConstruct
index e7a6ff23d9..791e40fee4 100644
--- a/bsp/stm32/stm32l4r5-st-nucleo/SConstruct
+++ b/bsp/stm32/stm32l4r5-st-nucleo/SConstruct
@@ -30,6 +30,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rt-thread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l4r9-st-eval/SConstruct b/bsp/stm32/stm32l4r9-st-eval/SConstruct
index 9cf3fc6180..b55f8c12b7 100644
--- a/bsp/stm32/stm32l4r9-st-eval/SConstruct
+++ b/bsp/stm32/stm32l4r9-st-eval/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rtthread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')
 
diff --git a/bsp/stm32/stm32l4r9-st-sensortile-box/SConstruct b/bsp/stm32/stm32l4r9-st-sensortile-box/SConstruct
index 1393d269ee..bafbe666c4 100644
--- a/bsp/stm32/stm32l4r9-st-sensortile-box/SConstruct
+++ b/bsp/stm32/stm32l4r9-st-sensortile-box/SConstruct
@@ -31,6 +31,7 @@ if rtconfig.PLATFORM in ['iccarm']:
     env.Replace(ARFLAGS = [''])
     env.Replace(LINKCOM = env["LINKCOM"] + ' --map rtthread.map')
 
+Export('env')
 Export('RTT_ROOT')
 Export('rtconfig')