Remove the explicit __declspec(dllexport) since that is handles already by CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS

CBLAS/include/cblas_globals.h

@@ -1,14 +1,8 @@
 #ifndef CBLAS_GLOBALS_H
 #define CBLAS_GLOBALS_H
 
-#if defined(_WIN32)
-  #if defined(CBLAS_DLL_EXPORTS)
-    #define CBLAS_GLOBAL_SYMBOL __declspec(dllexport)
-  #elif defined(CBLAS_DLL_IMPORTS)
-    #define CBLAS_GLOBAL_SYMBOL __declspec(dllimport)
-  #else
-    #define CBLAS_GLOBAL_SYMBOL
-  #endif
+#if defined(CBLAS_DLL_IMPORTS)
+  #define CBLAS_GLOBAL_SYMBOL __declspec(dllimport)
 #else
   #define CBLAS_GLOBAL_SYMBOL
 #endif

CBLAS/src/CMakeLists.txt

@@ -119,9 +119,6 @@ list(REMOVE_DUPLICATES SOURCES)
 
 add_library(${CBLASLIB}_obj OBJECT ${SOURCES})
 set_target_properties(${CBLASLIB}_obj PROPERTIES POSITION_INDEPENDENT_CODE ON)
-if(WIN32 AND BUILD_SHARED_LIBS)
-  target_compile_definitions(${CBLASLIB}_obj PRIVATE CBLAS_DLL_EXPORTS)
-endif()
 if(HAS_ATTRIBUTE_WEAK_SUPPORT)
   target_compile_definitions(${CBLASLIB}_obj PRIVATE HAS_ATTRIBUTE_WEAK_SUPPORT)
 endif()