diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 24b7f8741..6dc5fc56b 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -52,7 +52,7 @@ endif()
 
 set(TARGET common)
 
-add_library(${TARGET} STATIC
+add_library(${TARGET}
     arg.cpp
     arg.h
     base64.hpp
@@ -76,6 +76,8 @@ add_library(${TARGET} STATIC
 
 if (BUILD_SHARED_LIBS)
     set_target_properties(${TARGET} PROPERTIES POSITION_INDEPENDENT_CODE ON)
+    target_compile_definitions(${TARGET} PRIVATE LLAMA_BUILD)
+    target_compile_definitions(${TARGET} PUBLIC  LLAMA_SHARED)
 endif()
 
 set(LLAMA_COMMON_EXTRA_LIBS build_info)
diff --git a/common/common.h b/common/common.h
index 571260372..7f9556e60 100644
--- a/common/common.h
+++ b/common/common.h
@@ -41,6 +41,10 @@ extern const char * LLAMA_BUILD_TARGET;
 
 struct common_control_vector_load_info;
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //
 // CPU utils
 //
@@ -54,8 +58,12 @@ struct cpu_params {
     uint32_t poll                        = 50;      // Polling (busywait) level (0 - no polling, 100 - mostly polling)
 };
 
-int32_t cpu_get_num_physical_cores();
-int32_t cpu_get_num_math();
+LLAMA_API int32_t cpu_get_num_physical_cores();
+LLAMA_API int32_t cpu_get_num_math();
+
+#ifdef __cplusplus
+}
+#endif
 
 //
 // Common params