--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -42,6 +42,15 @@
   set(CMAKE_MAXIMUM_RANK 4 CACHE STRING "Maximum array rank for generated procedures")
 endif()

+find_package(BLAS)
+if(BLAS_FOUND)
+  add_compile_definitions(STDLIB_EXTERNAL_BLAS)
+endif()
+find_package(LAPACK)
+if(LAPACK_FOUND)
+  add_compile_definitions(STDLIB_EXTERNAL_LAPACK)
+endif()
+
 # --- find preprocessor
 find_program(FYPP fypp)
 if(NOT FYPP)
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -114,6 +114,12 @@
 )

 add_library(${PROJECT_NAME} ${SRC})
+if(BLAS_FOUND)
+  target_link_libraries(${PROJECT_NAME} BLAS::BLAS)
+endif()
+if(LAPACK_FOUND)
+  target_link_libraries(${PROJECT_NAME} LAPACK::LAPACK)
+endif()

 set_target_properties(
   ${PROJECT_NAME}