diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7be4f351a1830..ec635be8f6bd5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -167,6 +167,14 @@ cmake_dependent_option(FUZZ "Build for fuzzing. Enabling this will disable all o
 
 option(INSTALL_MAN "Install man pages." ON)
 
+set(APPEND_CPPFLAGS "" CACHE STRING "Preprocessor flags that are appended to the flags added by the build system.")
+set(APPEND_CFLAGS "" CACHE STRING "C compiler flags that are appended to the flags added by the build system.")
+set(APPEND_CXXFLAGS "" CACHE STRING "(Objective) C++ compiler flags that are appended to the flags added by the build system.")
+set(APPEND_LDFLAGS "" CACHE STRING "Linker flags that are appended to the flags added by the build system.")
+string(APPEND CMAKE_CXX_COMPILE_OBJECT " ${APPEND_CPPFLAGS} ${APPEND_CXXFLAGS}")
+string(APPEND CMAKE_CXX_CREATE_SHARED_LIBRARY " ${APPEND_LDFLAGS}")
+string(APPEND CMAKE_CXX_LINK_EXECUTABLE " ${APPEND_LDFLAGS}")
+
 set(configure_warnings)
 
 include(CheckPIESupported)
diff --git a/cmake/secp256k1.cmake b/cmake/secp256k1.cmake
index 822aa9911a8cf..28bdfdf84878c 100644
--- a/cmake/secp256k1.cmake
+++ b/cmake/secp256k1.cmake
@@ -9,6 +9,7 @@
 enable_language(C)
 set(CMAKE_C_STANDARD 90)
 set(CMAKE_C_EXTENSIONS OFF)
+string(APPEND CMAKE_C_COMPILE_OBJECT " ${APPEND_CPPFLAGS} ${APPEND_CFLAGS}")
 
 include(CheckCSourceCompiles)
 check_c_source_compiles("
diff --git a/src/qt/CMakeLists.txt b/src/qt/CMakeLists.txt
index 63a3212218945..b9d86c7ab74bd 100644
--- a/src/qt/CMakeLists.txt
+++ b/src/qt/CMakeLists.txt
@@ -20,6 +20,7 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
   set(CMAKE_OBJCXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
   set(CMAKE_OBJCXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
   set(CMAKE_OBJCXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL}")
+  string(APPEND CMAKE_OBJCXX_COMPILE_OBJECT " ${APPEND_CPPFLAGS} ${APPEND_CXXFLAGS}")
 endif()
 
 function(import_plugins target)