diff --git a/platformio/builder/tools/piolib.py b/platformio/builder/tools/piolib.py
index 8c63934e..d5c58ff8 100644
--- a/platformio/builder/tools/piolib.py
+++ b/platformio/builder/tools/piolib.py
@@ -34,6 +34,7 @@ from platformio.builder.tools import platformio as piotool
 from platformio.compat import WINDOWS, hashlib_encode_data, string_types
 from platformio.managers.lib import LibraryManager
 from platformio.package.manifest.parser import ManifestParserFactory
+from platformio.project.options import ProjectOptions
 
 
 class LibBuilderFactory(object):
@@ -90,12 +91,6 @@ class LibBuilderFactory(object):
 
 class LibBuilderBase(object):
 
-    LDF_MODES = ["off", "chain", "deep", "chain+", "deep+"]
-    LDF_MODE_DEFAULT = "chain"
-
-    COMPAT_MODES = ["off", "soft", "strict"]
-    COMPAT_MODE_DEFAULT = "soft"
-
     CLASSIC_SCANNER = SCons.Scanner.C.CScanner()
     CCONDITIONAL_SCANNER = SCons.Scanner.C.CConditionalScanner()
     # Max depth of nested includes:
@@ -215,35 +210,37 @@ class LibBuilderBase(object):
 
     @property
     def lib_ldf_mode(self):
-        return self.env.GetProjectOption("lib_ldf_mode", self.LDF_MODE_DEFAULT)
+        return self.env.GetProjectOption("lib_ldf_mode")
 
     @staticmethod
     def validate_ldf_mode(mode):
+        ldf_modes = ProjectOptions["env.lib_ldf_mode"].type.choices
         if isinstance(mode, string_types):
             mode = mode.strip().lower()
-        if mode in LibBuilderBase.LDF_MODES:
+        if mode in ldf_modes:
             return mode
         try:
-            return LibBuilderBase.LDF_MODES[int(mode)]
+            return ldf_modes[int(mode)]
         except (IndexError, ValueError):
             pass
-        return LibBuilderBase.LDF_MODE_DEFAULT
+        return ProjectOptions["env.lib_ldf_mode"].default
 
     @property
     def lib_compat_mode(self):
-        return self.env.GetProjectOption("lib_compat_mode", self.COMPAT_MODE_DEFAULT)
+        return self.env.GetProjectOption("lib_compat_mode")
 
     @staticmethod
     def validate_compat_mode(mode):
+        compat_modes = ProjectOptions["env.lib_compat_mode"].type.choices
         if isinstance(mode, string_types):
             mode = mode.strip().lower()
-        if mode in LibBuilderBase.COMPAT_MODES:
+        if mode in compat_modes:
             return mode
         try:
-            return LibBuilderBase.COMPAT_MODES[int(mode)]
+            return compat_modes[int(mode)]
         except (IndexError, ValueError):
             pass
-        return LibBuilderBase.COMPAT_MODE_DEFAULT
+        return ProjectOptions["env.lib_compat_mode"].default
 
     def is_platforms_compatible(self, platforms):
         return True
diff --git a/platformio/commands/check/command.py b/platformio/commands/check/command.py
index cb155e8a..0d0b6f27 100644
--- a/platformio/commands/check/command.py
+++ b/platformio/commands/check/command.py
@@ -117,10 +117,10 @@ def cli(
                 flags=flags or env_options.get("check_flags"),
                 severity=[DefectItem.SEVERITY_LABELS[DefectItem.SEVERITY_HIGH]]
                 if silent
-                else (severity or env_options.get("check_severity")),
+                else severity or config.get("env:" + envname, "check_severity"),
             )
 
-            for tool in env_options.get("check_tool", ["cppcheck"]):
+            for tool in config.get("env:" + envname, "check_tool"):
                 if skipenv:
                     results.append({"env": envname, "tool": tool})
                     continue
diff --git a/platformio/commands/debug/helpers.py b/platformio/commands/debug/helpers.py
index 858be66b..a3058776 100644
--- a/platformio/commands/debug/helpers.py
+++ b/platformio/commands/debug/helpers.py
@@ -139,15 +139,11 @@ def validate_debug_options(cmd_ctx, env_options):
         load_cmds=_cleanup_cmds(
             env_options.get(
                 "debug_load_cmds",
-                tool_settings.get("load_cmds", tool_settings.get("load_cmd", "load")),
+                tool_settings.get("load_cmds", tool_settings.get("load_cmd")),
             )
         ),
-        load_mode=env_options.get(
-            "debug_load_mode", tool_settings.get("load_mode", "always")
-        ),
-        init_break=env_options.get(
-            "debug_init_break", tool_settings.get("init_break", "tbreak main")
-        ),
+        load_mode=env_options.get("debug_load_mode", tool_settings.get("load_mode")),
+        init_break=env_options.get("debug_init_break", tool_settings.get("init_break")),
         init_cmds=_cleanup_cmds(
             env_options.get("debug_init_cmds", tool_settings.get("init_cmds"))
         ),