esp32: disable stack protector for startup code (CMake)

Files where stack protector is initialized should not be compiled with
stack protector enabled. This was done for Make but missing for CMake.

Fixes https://github.com/espressif/esp-idf/issues/2990.

diff --git a/components/esp32/CMakeLists.txt b/components/esp32/CMakeLists.txt
index 92b75a4cee205372b48adf41af403214496cbe71..735084f5567b77ab5f07ed00d1b3e9fc4bcff152 100644 (file)
--- a/components/esp32/CMakeLists.txt
+++ b/components/esp32/CMakeLists.txt
@@ -148,4 +148,10 @@ else()
     if(NOT "${BUILD_TEST_COMPONENTS}" EQUAL "")
         add_definitions(-DESP_TIMER_DYNAMIC_OVERFLOW_VAL)
     endif()
+
+    # disable stack protection in files which are involved in initialization of that feature
+    set_source_files_properties(
+        stack_check.c cpu_start.c
+        PROPERTIES COMPILE_FLAGS
+        -fno-stack-protector)
 endif()