Thanks for your answer, I try with other MinGW version and most of the errors become fixed, but now there appears a lot of undefined references when calling bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c,as follows:

bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+a655): undefined reference to `_imp__blpapi_AbstractSession_getServic
+e'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+a875): undeined reference to `_imp__blpapi_AbstractSession_createIden
+tity'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+aac6): undefined reference to `_imp__blpapi_Session_create'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+ad08): undefined reference to `_imp__blpapi_Session_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+ae75): undefined reference to `_imp__blpapi_Session_start'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+aff5): undefined reference to `_imp__blpapi_Session_startAsync'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+b175): undefined reference to `_imp__blpapi_Session_stop'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+b2f5): undefined reference to `_imp__blpapi_Session_stopAsync'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+b4d9): undefined reference to `_imp__blpapi_Session_nextEvent'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+b6ff): undefined reference to `_imp__blpapi_Session_tryNextEvent'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+b9ab): undefined reference to `_imp__blpapi_Session_subscribe'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+bcf5): undefined reference to `_imp__blpapi_Session_resubscribe'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+c005): undefined reference to `_imp__blpapi_Session_unsubscribe'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+c34f): undefined reference to `_imp__blpapi_Session_cancel'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+c6b5): undefined reference to `_imp__blpapi_Session_setStatusCorrelat
+ionId'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+ca57): undefined reference to `_imp__blpapi_Session_sendRequest'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+cee7): undefined reference to `_imp__blpapi_Session_sendAuthorization
+Request'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+d254): undefined reference to `_imp__blpapi_Session_openService'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+d4c5): undefined reference to `_imp__blpapi_Session_openServiceAsync'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+d75f): undefined reference to `_imp__blpapi_Session_generateToken'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+d9d5): undefined reference to `_imp__blpapi_Session_getService'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+dbf5): undefined reference to `_imp__blpapi_Session_createIdentity'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+dd85): undefined reference to `_imp__blpapi_Session_getAbstractSessio
+n'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+df15): undefined reference to `_imp__blpapi_SubscriptionItr_create'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+e098): undefined reference to `_imp__blpapi_SubscriptionItr_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+e26b): undefined reference to `_imp__blpapi_SubscriptionItr_next'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+e5a5): undefined reference to `_imp__blpapi_SubscriptionItr_isValid'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+e6e5): undefined reference to `_imp__blpapi_SubscriptionList_create'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+e828): undefined reference to `_imp__blpapi_SubscriptionList_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+eb17): undefined reference to `_imp__blpapi_SubscriptionList_add'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+ee35): undefined reference to `_imp__blpapi_SubscriptionList_clear'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+efef): undefined reference to `_imp__blpapi_SubscriptionList_append'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+f1a5): undefined reference to `_imp__blpapi_SubscriptionList_size'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+f393): undefined reference to `_imp__blpapi_SubscriptionList_correlat
+ionIdAt'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+f603): undefined reference to `_imp__blpapi_SubscriptionList_topicStr
+ingAt'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+f83c): undefined reference to `_imp__blpapi_Constant_setUserData'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+f9d5): undefined reference to `_imp__blpapi_Constant_name'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+fb5d): undefined reference to `_imp__blpapi_Constant_description'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+fd35): undefined reference to `_imp__blpapi_Constant_status'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x2
+feb5): undefined reference to `_imp__blpapi_Constant_datatype'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+0084): undefined reference to `_imp__blpapi_Constant_getValueAsChar'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+02af): undefined reference to `_imp__blpapi_Constant_getValueAsInt32'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+049f): undefined reference to `_imp__blpapi_Constant_getValueAsInt64'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+068f): undefined reference to `_imp__blpapi_Constant_getValueAsFloat3
+2'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+087f): undefined reference to `_imp__blpapi_Constant_getValueAsFloat6
+4'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+0a6f): undefined reference to `_imp__blpapi_Constant_getValueAsDateti
+me'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+0c5f): undefined reference to `_imp__blpapi_Constant_getValueAsString
+'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+0e15): undefined reference to `_imp__blpapi_Constant_userData'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+0fdc): undefined reference to `_imp__blpapi_ConstantList_setUserData'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+1175): undefined reference to `_imp__blpapi_ConstantList_name'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+12fd): undefined reference to `_imp__blpapi_ConstantList_description'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+14d5): undefined reference to `_imp__blpapi_ConstantList_numConstants
+'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+1655): undefined reference to `_imp__blpapi_ConstantList_datatype'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+17d5): undefined reference to `_imp__blpapi_ConstantList_status'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+19e7): undefined reference to `_imp__blpapi_ConstantList_getConstant'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+1c62): undefined reference to `_imp__blpapi_ConstantList_getConstantA
+t'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+1e35): undefined reference to `_imp__blpapi_ConstantList_userData'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+1fa8): undefined reference to `_imp__blpapi_Request_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+2115): undefined reference to `_imp__blpapi_Request_elements'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+22a5): undefined reference to `_imp__blpapi_Topic_create'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+2428): undefined reference to `_imp__blpapi_Topic_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+25cf): undefined reference to `_imp__blpapi_Topic_compare'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+2785): undefined reference to `_imp__blpapi_Topic_service'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+2915): undefined reference to `_imp__blpapi_Topic_isActive'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+2a95): undefined reference to `_imp__blpapi_TopicList_create'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+2c18): undefined reference to `_imp__blpapi_TopicList_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+2e05): undefined reference to `_imp__blpapi_TopicList_add'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+309f): undefined reference to `_imp__blpapi_TopicList_addFromMessage'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+3303): undefined reference to `_imp__blpapi_TopicList_correlationIdAt
+'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+357f): undefined reference to `_imp__blpapi_TopicList_topicString'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+37e3): undefined reference to `_imp__blpapi_TopicList_topicStringAt'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+3a5f): undefined reference to `_imp__blpapi_TopicList_status'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+3cc3): undefined reference to `_imp__blpapi_TopicList_statusAt'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+3f3f): undefined reference to `_imp__blpapi_TopicList_message'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+41a3): undefined reference to `_imp__blpapi_TopicList_messageAt'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+43a5): undefined reference to `_imp__blpapi_TopicList_size'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+456e): undefined reference to `_imp__blpapi_ResolutionList_extractAtt
+ributeFromResolutionSuccess'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+4725): undefined reference to `_imp__blpapi_ResolutionList_create'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+48a8): undefined reference to `_imp__blpapi_ResolutionList_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+4a95): undefined reference to `_imp__blpapi_ResolutionList_add'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+4d2f): undefined reference to `_imp__blpapi_ResolutionList_addFromMes
+sage'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+4f5f): undefined reference to `_imp__blpapi_ResolutionList_addAttribu
+te'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+5183): undefined reference to `_imp__blpapi_ResolutionList_correlatio
+nIdAt'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+53ff): undefined reference to `_imp__blpapi_ResolutionList_topicStrin
+g'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+5663): undefined reference to `_imp__blpapi_ResolutionList_topicStrin
+gAt'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+58df): undefined reference to `_imp__blpapi_ResolutionList_status'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+5b43): undefined reference to `_imp__blpapi_ResolutionList_statusAt'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+5e05): undefined reference to `_imp__blpapi_ResolutionList_attribute'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+60db): undefined reference to `_imp__blpapi_ResolutionList_attributeA
+t'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+637f): undefined reference to `_imp__blpapi_ResolutionList_message'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+65e3): undefined reference to `_imp__blpapi_ResolutionList_messageAt'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+67e5): undefined reference to `_imp__blpapi_ResolutionList_size'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+6965): undefined reference to `_imp__blpapi_EventFormatter_create'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+6ad8): undefined reference to `_imp__blpapi_EventFormatter_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+6d0b): undefined reference to `_imp__blpapi_EventFormatter_appendMess
+age'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+6ff5): undefined reference to `_imp__blpapi_EventFormatter_appendResp
+onse'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+728f): undefined reference to `_imp__blpapi_EventFormatter_appendReca
+pMessage'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+7535): undefined reference to `_imp__blpapi_EventFormatter_setValueBo
+ol'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+7846): undefined reference to `_imp__blpapi_EventFormatter_setValueCh
+ar'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+7b55): undefined reference to `_imp__blpapi_EventFormatter_setValueIn
+t32'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+7e6c): undefined reference to `_imp__blpapi_EventFormatter_setValueIn
+t64'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+8175): undefined reference to `_imp__blpapi_EventFormatter_setValueFl
+oat32'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+8485): undefined reference to `_imp__blpapi_EventFormatter_setValueFl
+oat64'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+87ab): undefined reference to `_imp__blpapi_EventFormatter_setValueDa
+tetime'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+8ae1): undefined reference to `_imp__blpapi_EventFormatter_setValueSt
+ring'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+8e4b): undefined reference to `_imp__blpapi_EventFormatter_setValueFr
+omName'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+9135): undefined reference to `_imp__blpapi_EventFormatter_pushElemen
+t'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+9355): undefined reference to `_imp__blpapi_EventFormatter_popElement
+'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+94f9): undefined reference to `_imp__blpapi_EventFormatter_appendValu
+eBool'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+96da): undefined reference to `_imp__blpapi_EventFormatter_appendValu
+eChar'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+98b9): undefined reference to `_imp__blpapi_EventFormatter_appendValu
+eInt32'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+9aa0): undefined reference to `_imp__blpapi_EventFormatter_appendValu
+eInt64'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+9c79): undefined reference to `_imp__blpapi_EventFormatter_appendValu
+eFloat32'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+9e59): undefined reference to `_imp__blpapi_EventFormatter_appendValu
+eFloat64'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+a04f): undefined reference to `_imp__blpapi_EventFormatter_appendValu
+eDatetime'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+a254): undefined reference to `_imp__blpapi_EventFormatter_appendValu
+eString'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+a47f): undefined reference to `_imp__blpapi_EventFormatter_appendValu
+eFromName'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+a635): undefined reference to `_imp__blpapi_EventFormatter_appendElem
+ent'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+a876): undefined reference to `_imp__blpapi_ProviderSession_create'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+aaa8): undefined reference to `_imp__blpapi_ProviderSession_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+ac15): undefined reference to `_imp__blpapi_ProviderSession_start'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+ad95): undefined reference to `_imp__blpapi_ProviderSession_startAsyn
+c'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+af15): undefined reference to `_imp__blpapi_ProviderSession_stop'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+b095): undefined reference to `_imp__blpapi_ProviderSession_stopAsync
+'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+b279): undefined reference to `_imp__blpapi_ProviderSession_nextEvent
+'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+b49f): undefined reference to `_imp__blpapi_ProviderSession_tryNextEv
+ent'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+b71b): undefined reference to `_imp__blpapi_ProviderSession_registerS
+ervice'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+ba81): undefined reference to `_imp__blpapi_ProviderSession_registerS
+erviceAsync'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+bdcf): undefined reference to `_imp__blpapi_ProviderSession_resolve'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+c09f): undefined reference to `_imp__blpapi_ProviderSession_resolveAs
+ync'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+c36f): undefined reference to `_imp__blpapi_ProviderSession_createTop
+ics'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+c63f): undefined reference to `_imp__blpapi_ProviderSession_createTop
+icsAsync'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+c8df): undefined reference to `_imp__blpapi_ProviderSession_getTopic'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+cb4f): undefined reference to `_imp__blpapi_ProviderSession_createTop
+ic'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+cdbf): undefined reference to `_imp__blpapi_ProviderSession_createSer
+viceStatusTopic'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+cfef): undefined reference to `_imp__blpapi_ProviderSession_publish'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+d209): undefined reference to `_imp__blpapi_ProviderSession_sendRespo
+nse'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+d3f5): undefined reference to `_imp__blpapi_ProviderSession_getAbstra
+ctSession'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+d545): undefined reference to `_imp__blpapi_ServiceRegistrationOption
+s_create'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+d6a5): undefined reference to `_imp__blpapi_ServiceRegistrationOption
+s_duplicate'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+d828): undefined reference to `_imp__blpapi_ServiceRegistrationOption
+s_destroy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+d9ce): undefined reference to `_imp__blpapi_ServiceRegistrationOption
+s_copy'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+dbcf): undefined reference to `_imp__blpapi_ServiceRegistrationOption
+s_setGroupId'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+ddf9): undefined reference to `_imp__blpapi_ServiceRegistrationOption
+s_setServicePriority'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+e028): undefined reference to `_imp__blpapi_ServiceRegistrationOption
+s_getGroupId'
bloomberg_api_internal_wrap.o:bloomberg_api_internal_wrap.c:(.text+0x3
+e3a5): undefined reference to `_imp__blpapi_ServiceRegistrationOption
+s_getServicePriority'
collect2: ld returned 1 exit status
dmake.exe:  Error code 129, while making 'blib\arch\auto\Bloomberg\API
+\Internal\
Internal.dll'
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I think the answer to that lies in something I didn't notice from your first post:

Note (probably harmless): No library found for -lblpapi3_32

libblpapi3_32.a is being sought (presumably for the purpose of resolving those references) but can't be found.

If you don't have that file you can create it from the Bloomberg dll - using gendef and dlltool as detailed here.
dlltool should have come with your compiler. If gendef is not also provided, you might have to google for it.
Then it's just a matter of placing your libblpapi3_32.a where it is automatically located. Or you can set the CPATH environment variable to point to its location - something like:

set CPATH=C:\library\location;%CPATH%
[download]

You'll then need to perform a fresh build.

Cheers,
Rob

Update: spelling out the gendef and dlltool commands (assuming the Bloomberg dll is called bl.dll - which may or may not be the case):

gendef bl.dll
dlltool --kill-at --input-def bl.def --output-lib libblpapi3_32.a
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