konzen
diff --git a/‎platform.txt
Copy file name to clipboardExpand all lines: platform.txt
+6-2Lines changed: 6 additions & 2 deletions b/‎platform.txt
Copy file name to clipboardExpand all lines: platform.txt
+6-2Lines changed: 6 additions & 2 deletions
diff --git a/‎tools/platformio-build.py
Copy file name to clipboardExpand all lines: tools/platformio-build.py
+9Lines changed: 9 additions & 0 deletions b/‎tools/platformio-build.py
Copy file name to clipboardExpand all lines: tools/platformio-build.py
+9Lines changed: 9 additions & 0 deletions
@@ -46,10 +46,14 @@ compiler.warning_flags.default=
 compiler.warning_flags.more=-Wall
 compiler.warning_flags.all=-Wall -Wextra
 
+# Additional flags specific to Arduino (not based on IDF flags).
+# Update tools/platformio-build.py when changing these flags.
+compiler.common_werror_flags=-Werror=return-type
+
 # Compile Flags
 compiler.cpreprocessor.flags="@{compiler.sdk.path}/flags/defines" "-I{build.source.path}" -iprefix "{compiler.sdk.path}/include/" "@{compiler.sdk.path}/flags/includes" "-I{compiler.sdk.path}/{build.memory_type}/include"
-compiler.c.flags="@{compiler.sdk.path}/flags/c_flags" {compiler.warning_flags} {compiler.optimization_flags}
-compiler.cpp.flags="@{compiler.sdk.path}/flags/cpp_flags" {compiler.warning_flags} {compiler.optimization_flags}
+compiler.c.flags="@{compiler.sdk.path}/flags/c_flags" {compiler.warning_flags} {compiler.optimization_flags} {compiler.common_werror_flags}
+compiler.cpp.flags="@{compiler.sdk.path}/flags/cpp_flags" {compiler.warning_flags} {compiler.optimization_flags} {compiler.common_werror_flags}
 compiler.S.flags="@{compiler.sdk.path}/flags/S_flags" {compiler.warning_flags} {compiler.optimization_flags}
 compiler.c.elf.flags="@{compiler.sdk.path}/flags/ld_flags" "@{compiler.sdk.path}/flags/ld_scripts"
 compiler.c.elf.libs="@{compiler.sdk.path}/flags/ld_libs"
 
@@ -164,6 +164,15 @@ def add_tinyuf2_extra_image():
     )
 )
 
+#
+# Additional flags specific to Arduino core (not based on IDF)
+#
+
+env.Append(
+    CFLAGS=["-Werror=return-type"],
+    CXXFLAGS=["-Werror=return-type"],
+)
+
 #
 # Target: Build Core Library
 #
Original file line number	Diff line number	Diff line change
`@@ -164,6 +164,15 @@ def add_tinyuf2_extra_image():`
`164`	`164`	`)`
`165`	`165`	`)`
`166`	`166`
	`167`	`+#`
	`168`	`+# Additional flags specific to Arduino core (not based on IDF)`
	`169`	`+#`
	`170`	`+`
	`171`	`+env.Append(`
	`172`	`+ CFLAGS=["-Werror=return-type"],`
	`173`	`+ CXXFLAGS=["-Werror=return-type"],`
	`174`	`+)`
	`175`	`+`
`167`	`176`	`#`
`168`	`177`	`# Target: Build Core Library`
`169`	`178`	`#`