Unable to build in Windows: undetermined C.RfcGetInt8

[papibe]

Trying to build package:

PS C:\Users\ppiaggio\go\src\github.com\sap\gorfc\gorfc> go build
# github.com/sap/gorfc/gorfc
.\gorfc.go:816:8: could not determine kind of name for C.RfcGetInt8

Environment:

PS C:\Users\ppiaggio\go\src\github.com\sap\gorfc\gorfc> echo $env:Path
C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\ProgramData\chocolatey\bin;C:\Go\bin;C:\Program Files\Git\cmd;C:\Users\ppiaggio\AppData\Local\Microsoft\WindowsApps;C:\Users\ppiaggio\go\bin;C:\Users\ppiaggio\win-build\bin;C:\Users\ppiaggio\win-build\bin;C:\Tools\nwrfcsdk\lib\

PS C:\Users\ppiaggio\go\src\github.com\sap\gorfc\gorfc> echo $env:SAPNWRFC_HOME
C:\Tools\nwrfcsdk

NetWeaver installation:

PS C:\Users\ppiaggio\go\src\github.com\sap\gorfc\gorfc> ls $env:SAPNWRFC_HOME


    Directory: C:\Tools\nwrfcsdk


Mode                LastWriteTime         Length Name
----                -------------         ------ ----
d-----       10/10/2019   4:58 AM                bin
d-----       10/10/2019   4:58 AM                demo
d-----       10/10/2019   4:58 AM                doc
d-----       10/10/2019   4:58 AM                include
d-----       10/10/2019   4:58 AM                lib

[bsrdjan]

You might be using the older SAP NWRFC SDK, without RfcGetInt8 API. The error should not occur with the current SDK version, 7.57.

[papibe]

Thanks for your answer. I updated the SAP NWRFC SDK to nwrfc750P_7-70002755.zip.

The previous error is gone, but the package still does not build:

PS C:\Users\ppiaggio\go\src\github.com\sap\gorfc\gorfc> go build .
# github.com/sap/gorfc/gorfc
In file included from C:/Tools/nwrfcsdk/include/sapnwrfc.h:7:0,
                 from .\gorfc.go:62:
C:/Tools/nwrfcsdk/include/sapucrfc.h:705:5: warning: 'align' attribute directive ignored [-Wattributes]
     typedef __declspec(align(16)) SAP_SRAW platform_max_t[16];
     ^
In file included from .\gorfc.go:62:0:
C:/Tools/nwrfcsdk/include/sapnwrfc.h:29:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning (disable : 4267)  // disable warning: conversion from 'size_t' to 'const unsigned int'
 ^
In file included from C:/Tools/nwrfcsdk/include/sapnwrfc.h:7:0,
                 from .\gorfc.go:62:
C:/Tools/nwrfcsdk/include/sapucrfc.h:1427:27: warning: 'unicodeId' defined but not used [-Wunused-variable]
 static SAP_RAW SAP_UNUSED unicodeId[] = cR("@(#)     Unicode");
                           ^

I appreciate your help.

[paparipote]

Hello Papibe, when I build my programs containing gorfc package, I get the warnings you indicate but the .exe program is built and I can execute it without problemas. Or may be, your .exe is generated but when you execute it, you do not get results? If that is the case, which version of Go are you using? I personally have problems with go 1.15 and I reported this yet.
Regards.

[zen37]

yes, same errors as indicated in #24

[bsrdjan]

The Windows is not supported until #21 fixed.

[bsrdjan]

Closing due to the sunset of the project.