Enable security flags in native compiler (PowerShell#4933)

* Enable strong stack protection
Enable  address space layout randomization (ASLR) or PIE

* Enable strong stack protection
Enable  address space layout randomization (ASLR) or PIE

Author: TravisEz13

src/libpsl-native/CMakeLists.txt

@@ -3,7 +3,7 @@ project(PSL-NATIVE)
 
 # Can't use add_compile_options with 2.8.11
 set(CMAKE_BUILD_TYPE "Release")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Werror")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Werror -fstack-protector-strong -fpie")
 set(LIBRARY_OUTPUT_PATH "${PROJECT_SOURCE_DIR}/../powershell-unix")
 
 if (CMAKE_SYSTEM_PROCESSOR MATCHES "arm*")

src/libpsl-native/arm.toolchain.cmake

@@ -1,7 +1,7 @@
 set(CMAKE_SYSTEM_NAME Linux)
 set(CMAKE_SYSTEM_VERSION 1)
 set(CMAKE_SYSTEM_PROCESSOR armv7l)
-set(CMAKE_CXX_COMPILER arm-linux-gnueabihf-g++)
+set(CMAKE_CXX_COMPILER arm-linux-gnueabihf-g++ -fstack-protector-strong -fpie)
 set(CMAKE_C_COMPILER arm-linux-gnueabihf-gcc)
 
 # add_compile_options(-target armv7-linux-gnueabihf)