diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0801faacd..96d23e77b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -344,8 +344,18 @@ if (_usebison STREQUAL YES)
     find_package (BISON REQUIRED)
 endif (_usebison STREQUAL YES)
 if (_uselapack STREQUAL YES)
-    find_package (BLAS REQUIRED)
-    find_package (LAPACK REQUIRED)
+    if(DEFINED ENV{BLAS_LIBS})
+      set(BLAS_FOUND YES)
+      set(BLAS_LIBRARIES $ENV{BLAS_LIBS})
+    else()
+      find_package (BLAS REQUIRED)
+    endif()
+    if(DEFINED ENV{LAPACK_LIBS})
+      set(LAPACK_FOUND YES)
+      set(LAPACK_LIBRARIES $ENV{LAPACK_LIBS})
+    else()
+      find_package (LAPACK REQUIRED)
+    endif()
     if (USE_FFTW3)
         if (FFTW3_DISABLE_THREADS)
             find_package (FFTW3 COMPONENTS single double REQUIRED)