diff --git a/cmake_export_symbol.cmake b/cmake_export_symbol.cmake
index 7dde938..2928c6b 100644
--- a/cmake_export_symbol.cmake
+++ b/cmake_export_symbol.cmake
@@ -4,6 +4,9 @@ macro(export_symbol TARGET FILENAME)
 
 	if(WIN32)
 		string(REPLACE ".sym" ".def" DEF_FILENAME ${FILENAME})
+		file(WRITE ${DEF_FILENAME} "EXPORTS\n")
+		file(READ ${FILENAME} SYMBOLS)
+		file(APPEND ${DEF_FILENAME} "${SYMBOLS}")
 		target_sources(${TARGET} PRIVATE ${DEF_FILENAME})
 
 	elseif(APPLE)
diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index dd0e569..45765d4 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -648,46 +648,70 @@ endif()
 
 if(CMAKE_HOST_WIN32)
 	set(CRYPTO_SRC ${CRYPTO_SRC} bio/b_win.c)
+	set(CRYPTO_UNEXPORT ${CRYPTO_UNEXPORT} BIO_s_log)
 	set(CRYPTO_SRC ${CRYPTO_SRC} ui/ui_openssl_win.c)
 endif()
 
 if(CMAKE_HOST_WIN32)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/posix_win.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} gettimeofday)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_perror)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_fopen)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_fgets)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_open)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_rename)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_connect)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_close)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_read)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_write)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_getsockopt)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} posix_setsockopt)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} sleep)
 endif()
 
 if(NOT HAVE_ASPRINTF)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/bsd-asprintf.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} asprintf)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} vasprintf)
 endif()
 
 if(NOT HAVE_INET_PTON)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/inet_pton.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} inet_pton)
 endif()
 
 if(NOT HAVE_REALLOCARRAY)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/reallocarray.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} reallocarray)
 endif()
 
 if(NOT HAVE_STRCASECMP)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/strcasecmp.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} strcasecmp)
 endif()
 
 if(NOT HAVE_STRLCAT)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/strlcat.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} strlcat)
 endif()
 
 if(NOT HAVE_STRLCPY)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/strlcpy.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} strlcpy)
 endif()
 
 if(NOT HAVE_STRNDUP)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/strndup.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} strndup)
 	if(NOT HAVE_STRNLEN)
 		set(CRYPTO_SRC ${CRYPTO_SRC} compat/strnlen.c)
+		set(EXTRA_EXPORT ${EXTRA_EXPORT} strnlen)
 	endif()
 endif()
 
 if(NOT HAVE_TIMEGM)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/timegm.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} timegm)
 endif()
 
 if(NOT HAVE_EXPLICIT_BZERO)
@@ -697,10 +721,13 @@ if(NOT HAVE_EXPLICIT_BZERO)
 		set(CRYPTO_SRC ${CRYPTO_SRC} compat/explicit_bzero.c)
 		set_source_files_properties(compat/explicit_bzero.c PROPERTIES COMPILE_FLAGS -O0)
 	endif()
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} explicit_bzero)
 endif()
 
 if(NOT HAVE_ARC4RANDOM_BUF)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/arc4random.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} arc4random)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} arc4random_buf)
 
 	if(NOT HAVE_GETENTROPY)
 		if(CMAKE_HOST_WIN32)
@@ -720,19 +747,23 @@ if(NOT HAVE_ARC4RANDOM_BUF)
 		elseif(CMAKE_SYSTEM_NAME MATCHES "SunOS")
 			set(CRYPTO_SRC ${CRYPTO_SRC} compat/getentropy_solaris.c)
 		endif()
+		set(EXTRA_EXPORT ${EXTRA_EXPORT} getentropy)
 	endif()
 endif()
 
 if(NOT HAVE_ARC4RANDOM_UNIFORM)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/arc4random_uniform.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} arc4random_uniform)
 endif()
 
 if(NOT HAVE_TIMINGSAFE_BCMP)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/timingsafe_bcmp.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} timingsafe_bcmp)
 endif()
 
 if(NOT HAVE_TIMINGSAFE_MEMCMP)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/timingsafe_memcmp.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} timingsafe_memcmp)
 endif()
 
 if(NOT ENABLE_ASM)
@@ -749,13 +780,22 @@ else()
 	add_definitions(-DOPENSSLDIR=\"${CMAKE_INSTALL_PREFIX}/etc/ssl\")
 endif()
 
+file(READ ${CMAKE_CURRENT_SOURCE_DIR}/crypto.sym SYMS)
+foreach(SYM IN LISTS CRYPTO_UNEXPORT)
+	string(REPLACE "${SYM}\n" "" SYMS ${SYMS})
+endforeach()
+file(WRITE ${CMAKE_CURRENT_SOURCE_DIR}/crypto_p.sym ${SYMS})
+list(SORT EXTRA_EXPORT)
+foreach(SYM IN LISTS EXTRA_EXPORT)
+	file(APPEND ${CMAKE_CURRENT_SOURCE_DIR}/crypto_p.sym "${SYM}\n")
+endforeach()
+
 add_library(crypto-objects OBJECT ${CRYPTO_SRC})
 if (BUILD_SHARED)
 	add_library(crypto STATIC $<TARGET_OBJECTS:crypto-objects>)
 	add_library(crypto-shared SHARED $<TARGET_OBJECTS:crypto-objects>)
+	export_symbol(crypto-shared ${CMAKE_CURRENT_SOURCE_DIR}/crypto_p.sym)
 	if (WIN32)
-		target_sources(crypto-shared PRIVATE
-			${CMAKE_CURRENT_SOURCE_DIR}/crypto.def)
 		target_link_libraries(crypto-shared Ws2_32.lib)
 		set(CRYPTO_POSTFIX -${CRYPTO_MAJOR_VERSION})
 	endif()