🔨 Use first g++ in path for 'native' targets

buildroot/share/PlatformIO/scripts/preprocessor.py

 #
 import subprocess,os,re
 
+nocache = 1
 verbose = 0
 
 def blab(str):
 #
 def search_compiler(env):
 
-	ENV_BUILD_PATH = os.path.join(env.Dictionary('PROJECT_BUILD_DIR'), env['PIOENV'])
+	ENV_BUILD_PATH = os.path.join(env['PROJECT_BUILD_DIR'], env['PIOENV'])
 	GCC_PATH_CACHE = os.path.join(ENV_BUILD_PATH, ".gcc_path")
 
 	try:
 	except:
 		pass
 
-	if os.path.exists(GCC_PATH_CACHE):
+	# Warning: The cached .gcc_path will obscure a newly-installed toolkit
+	if not nocache and os.path.exists(GCC_PATH_CACHE):
 		blab("Getting g++ path from cache")
 		with open(GCC_PATH_CACHE, 'r') as f:
 			return f.read()
 
-	# Find the current platform compiler by searching the $PATH
-	# which will be in a platformio toolchain bin folder
-	path_regex = re.escape(env['PROJECT_PACKAGES_DIR'])
+	# Find a platform compiler by searching $PATH items
+	# A native target will search all PATH bin folders.
+	# Others look only within $HOME/.platformio.
+	path_regex = "" if env.GetProjectOption('platform') == 'native' else re.escape(env['PROJECT_PACKAGES_DIR'])
+
 	gcc = "g++"
 	if env['PLATFORM'] == 'win32':
 		path_separator = ';'
 			# Use entire path to not rely on env PATH
 			filepath = os.path.sep.join([pathdir, filepath])
 			# Cache the g++ path to no search always
-			if os.path.exists(ENV_BUILD_PATH):
+			if not nocache and os.path.exists(ENV_BUILD_PATH):
 				blab("Caching g++ for current env")
 				with open(GCC_PATH_CACHE, 'w+') as f:
 					f.write(filepath)

ini/native.ini

 #
 # Simulator for macOS (MacPorts)
 #
-#  sudo port install gcc10 gdb glm libsdl2 libsdl2_net freetype
+#  sudo port install gcc11 gdb glm libsdl2 libsdl2_net freetype
 #  sudo port install ld64 @3_3 +ld64_xcode
 #
 #  cd /opt/local/bin
 #  sudo rm -f gcc g++ cc
-#  sudo ln -s gcc-mp-10 gcc ; sudo ln -s g++-mp-10 g++ ; sudo ln -s g++ cc
+#  sudo ln -s gcc-mp-11 gcc ; sudo ln -s g++-mp-11 g++ ; sudo ln -s g++ cc
 # This step may be obsolete:
 #  sudo port uninstall ld64 ld64-latest
 #
 #
 [simulator_macos]
 build_unflags     = -lGL
-custom_verbose    = 0
 build_flags       =
   -I/opt/local/include
   -I/opt/local/include/freetype2
 extends         = env:simulator_linux_debug
 build_flags     = ${env:simulator_linux_debug.build_flags} ${simulator_macos.build_flags} -ggdb -Og -D_THREAD_SAFE
 build_unflags   = ${simulator_macos.build_unflags}
+custom_verbose  = 0
+custom_gcc      = g++
 
 [env:simulator_macos_release]
 extends         = env:simulator_linux_release
 build_flags     = ${env:simulator_linux_release.build_flags} ${simulator_macos.build_flags}
 build_unflags   = ${simulator_macos.build_unflags}
+custom_verbose  = 0
+custom_gcc      = g++
 
 #
 # Simulator for Windows 10