diff --git a/bsp/stm32/stm32f103-dofly-M3S/.cproject b/bsp/stm32/stm32f103-dofly-M3S/.cproject
index ebcf2b2323..a297a256c5 100644
--- a/bsp/stm32/stm32f103-dofly-M3S/.cproject
+++ b/bsp/stm32/stm32f103-dofly-M3S/.cproject
@@ -79,7 +79,6 @@
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diff --git a/bsp/stm32/stm32f103-yf-ufun/.cproject b/bsp/stm32/stm32f103-yf-ufun/.cproject
index 1c88b85c64..87b276da10 100644
--- a/bsp/stm32/stm32f103-yf-ufun/.cproject
+++ b/bsp/stm32/stm32f103-yf-ufun/.cproject
@@ -78,7 +78,6 @@
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diff --git a/bsp/stm32/stm32f401-st-nucleo/.cproject b/bsp/stm32/stm32f401-st-nucleo/.cproject
index 4651155e21..136b17e0cf 100644
--- a/bsp/stm32/stm32f401-st-nucleo/.cproject
+++ b/bsp/stm32/stm32f401-st-nucleo/.cproject
@@ -80,7 +80,6 @@
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diff --git a/bsp/stm32/stm32f405-smdz-breadfruit/.cproject b/bsp/stm32/stm32f405-smdz-breadfruit/.cproject
new file mode 100644
index 0000000000..d89256003d
--- /dev/null
+++ b/bsp/stm32/stm32f405-smdz-breadfruit/.cproject
@@ -0,0 +1,155 @@
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+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="rtthread" buildArtefactType="org.eclipse.cdt.build.core.buildArtefactType.exe" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=org.eclipse.cdt.build.core.buildArtefactType.exe,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.debug" cleanCommand="${cross_rm} -rf" description="" id="ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.553091094" name="Debug" parent="ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug">
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diff --git a/bsp/stm32/stm32f405-smdz-breadfruit/.project b/bsp/stm32/stm32f405-smdz-breadfruit/.project
new file mode 100644
index 0000000000..95a6901921
--- /dev/null
+++ b/bsp/stm32/stm32f405-smdz-breadfruit/.project
@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="UTF-8"?>
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+    <link>
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+      <locationURI>virtual:/virtual</locationURI>
+    </link>
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+      <type>2</type>
+      <locationURI>$%7BPARENT-1-PROJECT_LOC%7D/libraries</locationURI>
+    </link>
+  </linkedResources>
+</projectDescription>
diff --git a/bsp/stm32/stm32f405-smdz-breadfruit/.settings/language.settings.xml b/bsp/stm32/stm32f405-smdz-breadfruit/.settings/language.settings.xml
new file mode 100644
index 0000000000..ad32aa8b32
--- /dev/null
+++ b/bsp/stm32/stm32f405-smdz-breadfruit/.settings/language.settings.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<project>
+	<configuration id="ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.553091094" name="Debug">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="-1576159572023439102" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT ARM Cross GCC Built-in Compiler Settings " parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+				<language-scope id="org.eclipse.cdt.core.gcc"/>
+				<language-scope id="org.eclipse.cdt.core.g++"/>
+			</provider>
+		</extension>
+	</configuration>
+</project>
diff --git a/bsp/stm32/stm32f405-smdz-breadfruit/.settings/org.eclipse.core.runtime.prefs b/bsp/stm32/stm32f405-smdz-breadfruit/.settings/org.eclipse.core.runtime.prefs
new file mode 100644
index 0000000000..b36aae6fb2
--- /dev/null
+++ b/bsp/stm32/stm32f405-smdz-breadfruit/.settings/org.eclipse.core.runtime.prefs
@@ -0,0 +1,3 @@
+content-types/enabled=true
+content-types/org.eclipse.cdt.core.asmSource/file-extensions=s
+eclipse.preferences.version=1
diff --git a/bsp/stm32/stm32f405-smdz-breadfruit/makefile.targets b/bsp/stm32/stm32f405-smdz-breadfruit/makefile.targets
new file mode 100644
index 0000000000..a00129bd90
--- /dev/null
+++ b/bsp/stm32/stm32f405-smdz-breadfruit/makefile.targets
@@ -0,0 +1,4 @@
+clean2:
+	-$(RM) $(CC_DEPS)$(C++_DEPS)$(C_UPPER_DEPS)$(CXX_DEPS)$(SECONDARY_FLASH)$(SECONDARY_SIZE)$(ASM_DEPS)$(S_UPPER_DEPS)$(C_DEPS)$(CPP_DEPS)
+	-$(RM) $(OBJS) *.elf
+	-@echo ' '
\ No newline at end of file
diff --git a/bsp/stm32/stm32f407-atk-explorer/.cproject b/bsp/stm32/stm32f407-atk-explorer/.cproject
index a64ff851f1..f6703346e2 100644
--- a/bsp/stm32/stm32f407-atk-explorer/.cproject
+++ b/bsp/stm32/stm32f407-atk-explorer/.cproject
@@ -81,7 +81,6 @@
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs.100549972" name="Defined symbols (-D)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs" useByScannerDiscovery="true" valueType="definedSymbols">
                   <listOptionValue builtIn="false" value="DEBUG" />
-                  <listOptionValue builtIn="false" value="_REENT_SMALL" />
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other.2133065240" name="Other compiler flags" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other" useByScannerDiscovery="true" value="" valueType="string" />
                 <option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files.714348818" name="Include files (-include)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files" useByScannerDiscovery="true" valueType="includeFiles">
diff --git a/bsp/stm32/stm32f411-st-nucleo/.cproject b/bsp/stm32/stm32f411-st-nucleo/.cproject
index 2078a87054..a4d6a43489 100644
--- a/bsp/stm32/stm32f411-st-nucleo/.cproject
+++ b/bsp/stm32/stm32f411-st-nucleo/.cproject
@@ -80,7 +80,6 @@
                 </option>
                 <option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs.100549972" name="Defined symbols (-D)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs" useByScannerDiscovery="true" valueType="definedSymbols">
                   <listOptionValue builtIn="false" value="DEBUG" />
-                  <listOptionValue builtIn="false" value="_REENT_SMALL" />
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other.2133065240" name="Other compiler flags" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other" useByScannerDiscovery="true" value="" valueType="string" />
                 <option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files.714348818" name="Include files (-include)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files" useByScannerDiscovery="true" valueType="includeFiles">
diff --git a/bsp/stm32/stm32f429-atk-apollo/.cproject b/bsp/stm32/stm32f429-atk-apollo/.cproject
index 4bd13e765a..debeccd6e6 100644
--- a/bsp/stm32/stm32f429-atk-apollo/.cproject
+++ b/bsp/stm32/stm32f429-atk-apollo/.cproject
@@ -81,7 +81,6 @@
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs.100549972" name="Defined symbols (-D)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs" useByScannerDiscovery="true" valueType="definedSymbols">
                   <listOptionValue builtIn="false" value="DEBUG" />
-                  <listOptionValue builtIn="false" value="_REENT_SMALL" />
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other.2133065240" name="Other compiler flags" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other" useByScannerDiscovery="true" value="" valueType="string" />
                 <option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files.714348818" name="Include files (-include)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files" useByScannerDiscovery="true" valueType="includeFiles">
diff --git a/bsp/stm32/stm32f429-fire-challenger/.cproject b/bsp/stm32/stm32f429-fire-challenger/.cproject
index 4fe60457b7..0b00ab595f 100644
--- a/bsp/stm32/stm32f429-fire-challenger/.cproject
+++ b/bsp/stm32/stm32f429-fire-challenger/.cproject
@@ -81,7 +81,6 @@
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs.100549972" name="Defined symbols (-D)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs" useByScannerDiscovery="true" valueType="definedSymbols">
                   <listOptionValue builtIn="false" value="DEBUG" />
-                  <listOptionValue builtIn="false" value="_REENT_SMALL" />
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other.2133065240" name="Other compiler flags" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other" useByScannerDiscovery="true" value="" valueType="string" />
                 <option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files.714348818" name="Include files (-include)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files" useByScannerDiscovery="true" valueType="includeFiles">
diff --git a/bsp/stm32/stm32f767-atk-apollo/.cproject b/bsp/stm32/stm32f767-atk-apollo/.cproject
index d1c84d2651..0ffe335a9f 100644
--- a/bsp/stm32/stm32f767-atk-apollo/.cproject
+++ b/bsp/stm32/stm32f767-atk-apollo/.cproject
@@ -81,7 +81,6 @@
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs.100549972" name="Defined symbols (-D)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs" useByScannerDiscovery="true" valueType="definedSymbols">
                   <listOptionValue builtIn="false" value="DEBUG" />
-                  <listOptionValue builtIn="false" value="_REENT_SMALL" />
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other.2133065240" name="Other compiler flags" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other" useByScannerDiscovery="true" value="" valueType="string" />
                 <option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files.714348818" name="Include files (-include)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files" useByScannerDiscovery="true" valueType="includeFiles">
diff --git a/bsp/stm32/stm32l475-atk-pandora/.cproject b/bsp/stm32/stm32l475-atk-pandora/.cproject
index f9f3507d68..21239afcbd 100644
--- a/bsp/stm32/stm32l475-atk-pandora/.cproject
+++ b/bsp/stm32/stm32l475-atk-pandora/.cproject
@@ -80,7 +80,6 @@
                 </option>
                 <option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs.100549972" name="Defined symbols (-D)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs" useByScannerDiscovery="true" valueType="definedSymbols">
                   <listOptionValue builtIn="false" value="DEBUG" />
-                  <listOptionValue builtIn="false" value="_REENT_SMALL" />
                 </option>
                 <option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other.2133065240" name="Other compiler flags" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other" useByScannerDiscovery="true" value="" valueType="string" />
                 <option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files.714348818" name="Include files (-include)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.include.files" useByScannerDiscovery="true" valueType="includeFiles">
diff --git a/tools/eclipse.py b/tools/eclipse.py
index 2b0f442cb8..191cfc2b3a 100644
--- a/tools/eclipse.py
+++ b/tools/eclipse.py
@@ -201,7 +201,6 @@ def HandleToolOption(tools, env, project, reset):
         # add '_REENT_SMALL' to CPPDEFINES when --specs=nano.specs has select
         if linker_newlib_nano_option is not None and linker_newlib_nano_option.get('value') == 'true' and '_REENT_SMALL' not in CPPDEFINES:
             CPPDEFINES += ['_REENT_SMALL']
-            print(linker_newlib_nano_option.get('value'))
 
         file_header = '''
 #ifndef RTCONFIG_PREINC_H__