The error message shows that SAP NWRFC SDK include files are not found.

Is SAP NWRFC SDK installed on your system and in which folder?

The GO should be informed about the location of include files, like described in README: https://github.com/SAP/gorfc#install-gorfc

Alternatively you can clone the repository and adapt #cgo windows options in gorfc.go

#cgo windows CFLAGS: -IC:/Tools/nwrfcsdk/include/
#cgo windows LDFLAGS: -LC:/Tools/nwrfcsdk/lib/ -lsapnwrfc -llibsapucum

from gorfc.

I am trying to run the commands using git bash. Facing the below error while running the command "go get github.com/sap/gorfc"

Error

$ go get github.com/sap/gorfc
#github.com/sap/gorfc
D:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lsapnwrfc
D:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -llibsapucum
collect2.exe: error: ld returned 1 exit status
#github.com/sap/gorfc
In file included from D:\Software\nwrfcsdk\nwrfcsdk/include/sapnwrfc.h:7,
from github.com\sap\gorfc\gorfc.go:62:
D:\Software\nwrfcsdk\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 github.com\sap\gorfc\gorfc.go:62:
D:\Software\nwrfcsdk\nwrfcsdk/include/sapnwrfc.h:29: warning: ignoring #pragma warning [-Wunknown-pragmas]
#pragma warning (disable : 4267) // disable warning: conversion from 'size_t' to 'const unsigned int'

In file included from D:\Software\nwrfcsdk\nwrfcsdk/include/sapnwrfc.h:7,
from github.com\sap\gorfc\gorfc.go:62:
D:\Software\nwrfcsdk\nwrfcsdk/include/sapucrfc.h:1427:27: warning: 'unicodeId' defined but not used [-Wunused-variable]
static SAP_RAW SAP_UNUSED unicodeId[] = cR("@(#) Unicode");

from gorfc.

The error log shows that SAP NWRFC SDK libraries are not found.

In which folder is SAP NWRFC SDK installed on your system and did you set the env variables following the installation steps ?

The dir $CGO_LDFLAGS (or dir $env:CGO_LDFLAGS in PS) should show SAP NWRFC SDK libraries. Could you please check that on your system?

from gorfc.

Env variables are set as below:
In user variable - SAPNWRFC_HOME is set to D:\Software\nwrfcsdk\nwrfcsdk
In system variable - Path added as D:\Software\nwrfcsdk\nwrfcsdk\lib

from gorfc.

And CGO_LDFLAGS ?

The dir $CGO_LDFLAGS (or dir $env:CGO_LDFLAGS in PS) should show SAP NWRFC SDK libraries. Could you please check that on your system?

from gorfc.

Should i set the GCO_LDFLAGS in env variable?

I actually ran the below commands on git bash from readme document:
export CGO_CFLAGS="-I $SAPNWRFC_HOME/include"
export CGO_LDFLAGS="-L $SAPNWRFC_HOME/lib"
export CGO_CFLAGS_ALLOW=.*
export CGO_LDFLAGS_ALLOW=.*
go get github.com/stretchr/testify

and when i ran the command "go get github.com/sap/gorfc" facing the error as shown above.

from gorfc.

I have also tired the alternate method suggested.
Made the below changes in gorfc.go file:

#cgo windows CFLAGS: -ID:/Software/nwrfcsdk/nwrfcsdk/include
#cgo windows LDFLAGS: -LD:/Software/nwrfcsdk/nwrfcsdk/lib -lsapnwrfc -llibsapucum

PFB the error:
$ go run sap_connection.go
#github.com/sap/gorfc/gorfc
D:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lsapnwrfc
D:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -llibsapucum
collect2.exe: error: ld returned 1 exit status
#github.com/sap/gorfc/gorfc
In file included from D:/Software/nwrfcsdk/nwrfcsdk/include/sapnwrfc.h:7,
from ....\pkg\mod\github.com\sap\[email protected]\gorfc\gorfc.go:52:
D:/Software/nwrfcsdk/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 ....\pkg\mod\github.com\sap\[email protected]\gorfc\gorfc.go:52:
D:/Software/nwrfcsdk/nwrfcsdk/include/sapnwrfc.h:29: warning: ignoring #pragma warning [-Wunknown-pragmas]
#pragma warning (disable : 4267) // disable warning: conversion from 'size_t' to 'const unsigned int'

In file included from D:/Software/nwrfcsdk/nwrfcsdk/include/sapnwrfc.h:7,
from ....\pkg\mod\github.com\sap\[email protected]\gorfc\gorfc.go:52:
D:/Software/nwrfcsdk/nwrfcsdk/include/sapucrfc.h:1427:27: warning: 'unicodeId' defined but not used [-Wunused-variable]
static SAP_RAW SAP_UNUSED unicodeId[] = cR("@(#) Unicode");

from gorfc.

I have the same problem, but env setting complete.
OS VERSION: windows 10
GO VERSION: 1.15.2

`C:\Users\John Li\go\pkg\mod\github.com\sap\[email protected]\gorfc>go build

github.com/sap/gorfc/gorfc

In file included from D:\nwrfcsdk\include/sapnwrfc.h:7,
from .\gorfc.go:52:
D:\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:52:
D:\nwrfcsdk\include/sapnwrfc.h:29: warning: ignoring #pragma warning [-Wunknown-pragmas]
#pragma warning (disable : 4267) // disable warning: conversion from 'size_t' to 'const unsigned int'

In file included from D:\nwrfcsdk\include/sapnwrfc.h:7,
from .\gorfc.go:52:
D:\nwrfcsdk\include/sapucrfc.h:1427:27: warning: 'unicodeId' defined but not used [-Wunused-variable]
static SAP_RAW SAP_UNUSED unicodeId[] = cR("@(#) Unicode");`

from gorfc.

OS VERSION: windows 10
GO VERSION: 1.15.2

exactly same errors like above

from gorfc.

The Windows is not supported until #21 fixed

from gorfc.

Closing due to the sunset of the project.

from gorfc.