fix: exclude DllMain with static build (#128)

Additionally,DLL is a hack only for the FIPS test, which is no longer actively maintained.

Author: rressi-at-globus

cryptopp/sources.cmake

@@ -64,7 +64,6 @@ set(cryptopp_SOURCES
     files.cpp
     filters.cpp
     fips140.cpp
-    fipstest.cpp
     gcm.cpp
     gcm_simd.cpp
     gf256.cpp
@@ -185,6 +184,14 @@ set(cryptopp_SOURCES
     zlib.cpp
 )
 
+if(CRYPTOPP_BUILD_SHARED)
+    list(
+        APPEND 
+        cryptopp_SOURCES
+        fipstest.cpp
+    )
+endif()
+
 set(cryptopp_SOURCES_PEM
     "${cryptopp-pem_SOURCE_DIR}/pem_common.cpp"
     "${cryptopp-pem_SOURCE_DIR}/pem_read.cpp"