diff --git a/cmake/prebuild.cmake b/cmake/prebuild.cmake
index 0c88cefe03..9320af9224 100644
--- a/cmake/prebuild.cmake
+++ b/cmake/prebuild.cmake
@@ -99,7 +99,6 @@ if (${COMPILER_ID} STREQUAL "GNU")
 endif ()
 
 string(TOUPPER ${ARCH} UC_ARCH)
-
 file(WRITE ${TARGET_CONF_TEMP}
   "#define OS_${HOST_OS}\t1\n"
   "#define ARCH_${UC_ARCH}\t1\n"
@@ -111,6 +110,10 @@ if (${HOST_OS} STREQUAL "WINDOWSSTORE")
   file(APPEND ${TARGET_CONF_TEMP}
     "#define OS_WINNT\t1\n")
 endif ()
+if (${HOST_OS} STREQUAL CYGWIN)
+  file(APPEND ${TARGET_CONF_TEMP}
+    "#define OS_CYGWIN_NT\t1\n")
+endif ()
 
 # f_check
 if (NOT NOFORTRAN)
diff --git a/driver/others/CMakeLists.txt b/driver/others/CMakeLists.txt
index e963fd9dda..a07a0baf99 100644
--- a/driver/others/CMakeLists.txt
+++ b/driver/others/CMakeLists.txt
@@ -13,6 +13,8 @@ if (USE_THREAD)
     set(BLAS_SERVER blas_server_omp.c)
   elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
     set(BLAS_SERVER blas_server_win32.c)
+  elseif (${CMAKE_SYSTEM_NAME} STREQUAL CYGWIN)
+    set(BLAS_SERVER blas_server_win32.c)
   elseif (${CMAKE_SYSTEM_NAME} STREQUAL "WindowsStore")
     set(BLAS_SERVER blas_server_win32.c)
   endif ()