Refactor strip_flags.py and add_c_flags.py (#21677)

* refactor strip-flags.py

* refac more readable

* make failsafe

* move var to top

* align

pio-tools/add_c_flags.py

@@ -1,16 +1,21 @@
 Import("env")
 
+build_flags = env['BUILD_FLAGS']
+chip = env.get("BOARD_MCU").lower()
+
 # General options that are passed to the C++ compiler
 env.Append(CXXFLAGS=["-Wno-volatile"])
 
 # General options that are passed to the C compiler (C only; not C++).
 env.Append(CFLAGS=["-Wno-discarded-qualifiers", "-Wno-implicit-function-declaration", "-Wno-incompatible-pointer-types"])
 
-
 # Remove build flags which are not valid for risc-v
-build_flags = env['BUILD_FLAGS']
-chip = env.get("BOARD_MCU").lower()
-
-if "c" in chip:
-  build_flags.pop(build_flags.index("-mno-target-align"))
-  build_flags.pop(build_flags.index("-mtarget-align"))
+if chip in ("esp32c2", "esp32c3", "esp32c6", "esp32h2"):
+  try:
+    build_flags.pop(build_flags.index("-mno-target-align"))
+  except:
+    do_nothing=""
+  try:
+    build_flags.pop(build_flags.index("-mtarget-align"))
+  except:
+    do_nothing=""

pio-tools/strip-flags.py

@@ -1,15 +1,15 @@
 Import('env')
 
-link_flags = " ".join(env['LINKFLAGS'])
+link_flags = env['LINKFLAGS']
 build_flags = " ".join(env['BUILD_FLAGS'])
 
 if "FIRMWARE_SAFEBOOT" in build_flags:
   # Crash Recorder is not included in safeboot firmware -> remove Linker wrap
-  link_flags = link_flags.replace("-Wl,--wrap=panicHandler", "")
-  link_flags = link_flags.replace("-Wl,--wrap=xt_unhandled_exception", "")
-
-new_link_flags = link_flags.split()
-
-env.Replace(
-  LINKFLAGS=new_link_flags
-)
+  try:
+    link_flags.pop(link_flags.index("-Wl,--wrap=panicHandler"))
+  except:
+    do_nothing=""
+  try:
+    link_flags.pop(link_flags.index("-Wl,--wrap=xt_unhandled_exception"))
+  except:
+    do_nothing=""