diff --git a/CMakeLists.txt b/CMakeLists.txt
index a739abc8..d4b31df0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -73,7 +73,10 @@ enable_testing()
 string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" SYSPROC)
 set(X86_ALIASES x86 i386 i686 x86_64 amd64)
 list(FIND X86_ALIASES "${SYSPROC}" X86MATCH)
-if("${SYSPROC}" STREQUAL "" OR X86MATCH GREATER "-1")
+if("${CMAKE_C_COMPILER}" MATCHES "-buildroot-[^/]+$")
+    message(STATUS "Detected Buildroot toolchain")
+    # Use buildroot toolchain's default architecture settings
+elseif("${SYSPROC}" STREQUAL "" OR X86MATCH GREATER "-1")
     message(STATUS "Detected x86 system processor")
     set(X86 true)
     add_definitions(-DARCH_X86=1)