diff --git a/.reuse/dep5 b/.reuse/dep5
index 0766738044..cdefb1698f 100644
--- a/.reuse/dep5
+++ b/.reuse/dep5
@@ -23,6 +23,10 @@ Files: projects/Windows/*
 Copyright: Daniel Stenberg, <daniel@haxx.se>, et al.
 License: curl
 
+Files: libcurl.def
+Copyright: Daniel Stenberg, <daniel@haxx.se>, et al.
+License: curl
+
 # Single files we do not want to edit directly
 Files: CHANGES
 Copyright: Daniel Stenberg, <daniel@haxx.se>, et al.
diff --git a/Makefile.am b/Makefile.am
index fa20363bdf..6c780a849d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -148,7 +148,8 @@ PLAN9_DIST = plan9/include/mkfile \
 
 EXTRA_DIST = CHANGES COPYING maketgz Makefile.dist curl-config.in            \
  RELEASE-NOTES buildconf libcurl.pc.in MacOSX-Framework $(CMAKE_DIST)        \
- $(VC_DIST) $(WINBUILD_DIST) $(PLAN9_DIST) lib/libcurl.vers.in buildconf.bat
+ $(VC_DIST) $(WINBUILD_DIST) $(PLAN9_DIST) lib/libcurl.vers.in buildconf.bat \
+ libcurl.def
 
 CLEANFILES = $(VC10_LIBVCXPROJ) $(VC10_SRCVCXPROJ) $(VC11_LIBVCXPROJ)        \
  $(VC11_SRCVCXPROJ) $(VC12_LIBVCXPROJ) $(VC12_SRCVCXPROJ) $(VC14_LIBVCXPROJ) \
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 0239f805be..faae6452c5 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -108,10 +108,46 @@ if(WIN32 AND
   set(IMPORT_LIB_SUFFIX "_imp")
 endif()
 
+# On supported platforms, do a single compilation pass for libcurl sources
+# and reuse these objects to generate both static and shared target.
+# This is possible where PIC is the default for both shared and static and
+# there is a way to tell the linker which libcurl symbols it should export
+# (vs. marking these symbols exportable at compile-time).
+if(WIN32 AND NOT DEFINED SHARE_LIB_OBJECT)
+  set(SHARE_LIB_OBJECT ON)
+endif()
+
+if(SHARE_LIB_OBJECT)
+  set(LIB_OBJECT "libcurl_object")
+  add_library(${LIB_OBJECT} OBJECT ${HHEADERS} ${CSOURCES})
+  target_link_libraries(${LIB_OBJECT} PRIVATE ${CURL_LIBS})
+  set_target_properties(${LIB_OBJECT} PROPERTIES
+    COMPILE_DEFINITIONS "BUILDING_LIBCURL"
+    INTERFACE_COMPILE_DEFINITIONS "CURL_STATICLIB")
+  if(HIDES_CURL_PRIVATE_SYMBOLS)
+    set_target_properties(${LIB_OBJECT} PROPERTIES
+      COMPILE_DEFINITIONS "CURL_HIDDEN_SYMBOLS"
+      COMPILE_FLAGS "${CURL_CFLAG_SYMBOLS_HIDE}")
+  endif()
+  if(CURL_HAS_LTO)
+    set_target_properties(${LIB_OBJECT} PROPERTIES
+      INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
+      INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
+  endif()
+
+  target_include_directories(${LIB_OBJECT} INTERFACE
+    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+    $<BUILD_INTERFACE:${CURL_SOURCE_DIR}/include>)
+
+  set(LIB_SOURCE $<TARGET_OBJECTS:${LIB_OBJECT}>)
+else()
+  set(LIB_SOURCE ${HHEADERS} ${CSOURCES})
+endif()
+
 # we want it to be called libcurl on all platforms
 if(BUILD_STATIC_LIBS)
   list(APPEND libcurl_export ${LIB_STATIC})
-  add_library(${LIB_STATIC} STATIC ${HHEADERS} ${CSOURCES})
+  add_library(${LIB_STATIC} STATIC ${LIB_SOURCE})
   add_library(${PROJECT_NAME}::${LIB_STATIC} ALIAS ${LIB_STATIC})
   target_link_libraries(${LIB_STATIC} PRIVATE ${CURL_LIBS})
   # Remove the "lib" prefix since the library is already named "libcurl".
@@ -142,10 +178,10 @@ endif()
 
 if(BUILD_SHARED_LIBS)
   list(APPEND libcurl_export ${LIB_SHARED})
-  add_library(${LIB_SHARED} SHARED ${HHEADERS} ${CSOURCES})
+  add_library(${LIB_SHARED} SHARED ${LIB_SOURCE})
   add_library(${PROJECT_NAME}::${LIB_SHARED} ALIAS ${LIB_SHARED})
   if(WIN32)
-    set_property(TARGET ${LIB_SHARED} APPEND PROPERTY SOURCES libcurl.rc)
+    set_property(TARGET ${LIB_SHARED} APPEND PROPERTY SOURCES libcurl.rc ${CURL_SOURCE_DIR}/libcurl.def)
   endif()
   target_link_libraries(${LIB_SHARED} PRIVATE ${CURL_LIBS})
   # Remove the "lib" prefix since the library is already named "libcurl".
diff --git a/lib/Makefile.mk b/lib/Makefile.mk
index b298ac0707..e1f782bac8 100644
--- a/lib/Makefile.mk
+++ b/lib/Makefile.mk
@@ -388,6 +388,7 @@ ifdef WIN32
 CURL_DLL_SUFFIX ?=
 libcurl_dll_LIBRARY := libcurl$(CURL_DLL_SUFFIX).dll
 libcurl_dll_a_LIBRARY := libcurl.dll.a
+CURL_LDFLAGS_LIB += $(PROOT)/libcurl.def
 ifdef MAP
 libcurl_map_LIBRARY := libcurl$(CURL_DLL_SUFFIX).map
 CURL_LDFLAGS_LIB += -Wl,-Map,$(libcurl_map_LIBRARY)
diff --git a/libcurl.def b/libcurl.def
new file mode 100644
index 0000000000..e84d4c6558
--- /dev/null
+++ b/libcurl.def
@@ -0,0 +1,92 @@
+EXPORTS
+curl_easy_cleanup
+curl_easy_duphandle
+curl_easy_escape
+curl_easy_getinfo
+curl_easy_header
+curl_easy_init
+curl_easy_nextheader
+curl_easy_option_by_id
+curl_easy_option_by_name
+curl_easy_option_next
+curl_easy_pause
+curl_easy_perform
+curl_easy_recv
+curl_easy_reset
+curl_easy_send
+curl_easy_setopt
+curl_easy_strerror
+curl_easy_unescape
+curl_easy_upkeep
+curl_escape
+curl_formadd
+curl_formfree
+curl_formget
+curl_free
+curl_getdate
+curl_getenv
+curl_global_cleanup
+curl_global_init
+curl_global_init_mem
+curl_global_sslset
+curl_maprintf
+curl_mfprintf
+curl_mime_addpart
+curl_mime_data
+curl_mime_data_cb
+curl_mime_encoder
+curl_mime_filedata
+curl_mime_filename
+curl_mime_free
+curl_mime_headers
+curl_mime_init
+curl_mime_name
+curl_mime_subparts
+curl_mime_type
+curl_mprintf
+curl_msnprintf
+curl_msprintf
+curl_multi_add_handle
+curl_multi_assign
+curl_multi_cleanup
+curl_multi_fdset
+curl_multi_info_read
+curl_multi_init
+curl_multi_perform
+curl_multi_poll
+curl_multi_remove_handle
+curl_multi_setopt
+curl_multi_socket
+curl_multi_socket_action
+curl_multi_socket_all
+curl_multi_strerror
+curl_multi_timeout
+curl_multi_wait
+curl_multi_wakeup
+curl_mvaprintf
+curl_mvfprintf
+curl_mvprintf
+curl_mvsnprintf
+curl_mvsprintf
+curl_pushheader_byname
+curl_pushheader_bynum
+curl_share_cleanup
+curl_share_init
+curl_share_setopt
+curl_share_strerror
+curl_slist_append
+curl_slist_free_all
+curl_strequal
+curl_strnequal
+curl_unescape
+curl_url
+curl_url_cleanup
+curl_url_dup
+curl_url_get
+curl_url_set
+curl_url_strerror
+curl_version
+curl_version_info
+curl_ws_meta
+curl_ws_recv
+curl_ws_send