https://community.intel.com/t5/Intel-Fortran-Compiler/DEC-attributes-to-create-DLL-for-vb-net-and-excel/m-p/880798#M75188 I have a Fortran DLL project that I am building in IVF11.1. The DLL has entry points that i would like to call from VB.net (VS2008) and also from Excel VBA macros. To find the entry points, i included in the following two lines in each fionction/subroutine that i call from vb.net/excel:<BR /><BR />!dec$ attributes dllexport :: MW_fnc<BR />!dec$ attributes stdcall, REFERENCE, alias :'MW_F' :: MW_FNC<BR /><BR />The name of the function, in this case, is real(8) Function MW_fnc.<BR /><BR />This allows me to then DECLARE the function MW_F in VB.net and in Excel VBA. <BR /><BR />The problem is this -- the source code is split up into a few different files. The MW_FNC routine is contained in FILEA.f. There is a second routine (SABS_F) that makes use of this function, but it is in FileB.f. WhenI compile/link the code, i get the error:<BR />Error 11 error LNK2019: unresolved external symbol _MW_FNC referenced in function SABS_F. entropy.obj <BR /><BR />I also end up with warnings that are something like this for other functions that do not have the second DEC statement (i.e., they are not aliased):<BR />Warning 5 warning : locally defined symbol __imp__DENSITYSITOIP_FNC imported Release\h_air.obj <BR />Warning 10 warning LNK4217: locally defined symbol _DENSITYSITOIP_FNC imported in function _GETDENSITYFORFLOWRATE_FNC h_air.obj <BR /><BR />I am pretty sure this all has to do with the DLLEXPORT, STDCALL, and ALIAS attributes, but i am at a loggerhead. Can someone help me?<BR /><BR />Kirby Thu, 19 Nov 2009 19:07:23 GMT kirbychapman 2009-11-19T19:07:23Z https://community.intel.com/t5/Intel-Fortran-Compiler/DEC-attributes-to-create-DLL-for-vb-net-and-excel/m-p/880798#M75188 I have a Fortran DLL project that I am building in IVF11.1. The DLL has entry points that i would like to call from VB.net (VS2008) and also from Excel VBA macros. To find the entry points, i included in the following two lines in each fionction/subroutine that i call from vb.net/excel:<BR /><BR />!dec$ attributes dllexport :: MW_fnc<BR />!dec$ attributes stdcall, REFERENCE, alias :'MW_F' :: MW_FNC<BR /><BR />The name of the function, in this case, is real(8) Function MW_fnc.<BR /><BR />This allows me to then DECLARE the function MW_F in VB.net and in Excel VBA. <BR /><BR />The problem is this -- the source code is split up into a few different files. The MW_FNC routine is contained in FILEA.f. There is a second routine (SABS_F) that makes use of this function, but it is in FileB.f. WhenI compile/link the code, i get the error:<BR />Error 11 error LNK2019: unresolved external symbol _MW_FNC referenced in function SABS_F. entropy.obj <BR /><BR />I also end up with warnings that are something like this for other functions that do not have the second DEC statement (i.e., they are not aliased):<BR />Warning 5 warning : locally defined symbol __imp__DENSITYSITOIP_FNC imported Release\h_air.obj <BR />Warning 10 warning LNK4217: locally defined symbol _DENSITYSITOIP_FNC imported in function _GETDENSITYFORFLOWRATE_FNC h_air.obj <BR /><BR />I am pretty sure this all has to do with the DLLEXPORT, STDCALL, and ALIAS attributes, but i am at a loggerhead. Can someone help me?<BR /><BR />Kirby Thu, 19 Nov 2009 19:07:23 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/DEC-attributes-to-create-DLL-for-vb-net-and-excel/m-p/880798#M75188 kirbychapman 2009-11-19T19:07:23Z https://community.intel.com/t5/Intel-Fortran-Compiler/DEC-attributes-to-create-DLL-for-vb-net-and-excel/m-p/880799#M75189 <DIV style="margin:0px;"></DIV> <BR />You must repeat the ATTRIBUTES line with STDCALL and ALIAS in any routine that wants to call the exported routine. The warnings are harmless and can be ignored.<BR /> Thu, 19 Nov 2009 19:48:15 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/DEC-attributes-to-create-DLL-for-vb-net-and-excel/m-p/880799#M75189 Steven_L_Intel1 2009-11-19T19:48:15Z https://community.intel.com/t5/Intel-Fortran-Compiler/DEC-attributes-to-create-DLL-for-vb-net-and-excel/m-p/880800#M75190 <DIV style="margin:0px;"> <DIV id="quote_reply" style="margin-top: 5px; width: 100%;"> <DIV style="margin-left:2px;margin-right:2px;">Quoting - <A href="https://community.intel.com/en-us/profile/336209">Steve Lionel (Intel)</A></DIV> <DIV style="background-color:#E5E5E5; padding:5px;border: 1px; border-style: inset;margin-left:2px;margin-right:2px;"><EM><BR />You must repeat the ATTRIBUTES line with STDCALL and ALIAS in any routine that wants to call the exported routine. The warnings are harmless and can be ignored.<BR /></EM></DIV> </DIV> </DIV> <BR />This <A href="http://software.intel.com/en-us/forums/showpost.php?p=82841">previous thread </A>in the forum may give you the answer you need<BR /><BR />David Thu, 19 Nov 2009 23:48:11 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/DEC-attributes-to-create-DLL-for-vb-net-and-excel/m-p/880800#M75190 DavidWhite 2009-11-19T23:48:11Z