From 8916c8480eb3483c2ffb41ad8961cd0c2b0fb1c4 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Date: Mon, 15 Apr 2019 22:48:21 +0200
Subject: [PATCH] Drop hardening-related flags

These will be set by Buildroot depending on toolchain capabilities and
global Buildroot options.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
 cmrtlib/linux/CMakeLists.txt                             | 8 ++++----
 media_driver/cmake/linux/media_compile_flags_linux.cmake | 1 -
 media_driver/media_top_cmake.cmake                       | 2 +-
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/cmrtlib/linux/CMakeLists.txt b/cmrtlib/linux/CMakeLists.txt
index 44ce4f08..b462fbea 100644
--- a/cmrtlib/linux/CMakeLists.txt
+++ b/cmrtlib/linux/CMakeLists.txt
@@ -32,11 +32,11 @@
 endif()
 
 # Set up compile options that will be used for the Linux build
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CPP_STANDARD_OPTION} -fPIC -fpermissive -fstack-protector-all -Werror")
-set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-strict-aliasing -D_FORTIFY_SOURCE=2")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CPP_STANDARD_OPTION} -fPIC -fpermissive -Werror")
+set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-strict-aliasing")
 set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG} -D_DEBUG -D__DEBUG -O0")
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CPP_STANDARD_OPTION} -fPIC -fpermissive -fstack-protector-all -Werror")
-set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-strict-aliasing -D_FORTIFY_SOURCE=2")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CPP_STANDARD_OPTION} -fPIC -fpermissive -Werror")
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-strict-aliasing")
 set(CMAKE_C_FLAGS_DEBUG   "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG -D__DEBUG -O0")
 
 set(GCC_SECURE_LINK_FLAGS "-z relro -z now")
diff --git a/media_driver/cmake/linux/media_compile_flags_linux.cmake b/media_driver/cmake/linux/media_compile_flags_linux.cmake
index 9e85fdb2..c45ce11b 100755
--- a/media_driver/cmake/linux/media_compile_flags_linux.cmake
+++ b/media_driver/cmake/linux/media_compile_flags_linux.cmake
@@ -47,7 +47,6 @@ set(MEDIA_COMPILER_FLAGS_COMMON
     # Other common flags
     -fmessage-length=0
     -fvisibility=hidden
-    -fstack-protector
     -fdata-sections
     -ffunction-sections
     -Wl,--gc-sections
@@ -119,7 +118,6 @@
     set(MEDIA_COMPILER_FLAGS_RELEASE
         ${MEDIA_COMPILER_FLAGS_RELEASE}
         -O2
-        -D_FORTIFY_SOURCE=2
         -fno-omit-frame-pointer
     )
 endif()
diff --git a/media_driver/media_top_cmake.cmake b/media_driver/media_top_cmake.cmake
index 3491db1e..b30fa04a 100755
--- a/media_driver/media_top_cmake.cmake
+++ b/media_driver/media_top_cmake.cmake
@@ -105,7 +105,7 @@ if(MEDIA_BUILD_FATAL_WARNINGS)
     set_target_properties(${LIB_NAME_OBJ} PROPERTIES COMPILE_FLAGS "-Werror")
 endif()
 
-set_target_properties(${LIB_NAME} PROPERTIES LINK_FLAGS "-Wl,--no-as-needed -Wl,--gc-sections -z relro -z now -fstack-protector -fPIC")
+set_target_properties(${LIB_NAME} PROPERTIES LINK_FLAGS "-Wl,--no-as-needed -Wl,--gc-sections -fPIC")
 set_target_properties(${LIB_NAME}        PROPERTIES PREFIX "")
 set_target_properties(${LIB_NAME_STATIC} PROPERTIES PREFIX "")
 
-- 
2.20.1