diff --git a/cmake/platforms/LinuxAArch64.cmake b/cmake/platforms/LinuxAArch64.cmake
--- a/cmake/platforms/LinuxAArch64.cmake
+++ b/cmake/platforms/LinuxAArch64.cmake
@@ -9,7 +9,10 @@
 
 # Target environment on the build host system
 # Set 1st to directory with the cross compiler's C/C++ headers/libs
-set(CMAKE_FIND_ROOT_PATH "${CMAKE_CURRENT_SOURCE_DIR}/depends/${TOOLCHAIN_PREFIX}")
+set(CMAKE_FIND_ROOT_PATH
+	"${CMAKE_CURRENT_SOURCE_DIR}/depends/${TOOLCHAIN_PREFIX}"
+	"/usr/${TOOLCHAIN_PREFIX}"
+)
 
 # We also may have built dependencies for the native platform.
 set(CMAKE_PREFIX_PATH "${CMAKE_CURRENT_SOURCE_DIR}/depends/${TOOLCHAIN_PREFIX}/native")
diff --git a/cmake/platforms/LinuxARM.cmake b/cmake/platforms/LinuxARM.cmake
--- a/cmake/platforms/LinuxARM.cmake
+++ b/cmake/platforms/LinuxARM.cmake
@@ -9,7 +9,10 @@
 
 # Target environment on the build host system
 # Set 1st to directory with the cross compiler's C/C++ headers/libs
-set(CMAKE_FIND_ROOT_PATH "${CMAKE_CURRENT_SOURCE_DIR}/depends/${TOOLCHAIN_PREFIX}")
+set(CMAKE_FIND_ROOT_PATH
+	"${CMAKE_CURRENT_SOURCE_DIR}/depends/${TOOLCHAIN_PREFIX}"
+	"/usr/${TOOLCHAIN_PREFIX}"
+)
 
 # We also may have built dependencies for the native platform.
 set(CMAKE_PREFIX_PATH "${CMAKE_CURRENT_SOURCE_DIR}/depends/${TOOLCHAIN_PREFIX}/native")
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -222,7 +222,7 @@
 if(ENABLE_GLIBC_BACK_COMPAT)
 	# glibc absorbed clock_gettime in 2.17. librt (its previous location) is
 	# safe to link in anyway for back-compat.
-	find_library(RT_LIBRARY rt)
+	find_library(RT_LIBRARY rt CMAKE_FIND_ROOT_PATH_BOTH)
 	target_link_libraries(util ${RT_LIBRARY})
 
 	#__fdelt_chk's params and return type have changed from long unsigned int to