cmd/go: c-shared header does not compile on Visual Studio #36233
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And I'm curious that there is no lib file, how is the msvc link the code? |
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I have the same problem, did you find for a solution? |
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Change https://go.dev/cl/379474 mentions this issue: |
__SIZE_TYPE__ is a GCC type which has been superseded by size_t -define in stddef.h- since ISO C99. cmd/cgo already uses size_t in many places, but still generates several files using __SIZE_TYPES__, most notably the _cgo_export.h. This change replaces all __SIZE_TYPES__ occurrences with size_t. Updates #36233 Change-Id: Id8a99b5d7763caab9333eab9b585e78249a37415 Reviewed-on: https://go-review.googlesource.com/c/go/+/379474 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
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Change https://go.dev/cl/397134 mentions this issue: |
MSVC can link Go DLL's compiled by MinGW using different tricks. The one I use the most is this one: # 1. Build MinGW DLL.
go build -buildmode=c-shared -o foo.dll . # Generate MinGW DLL
# 2. Generate a def file out of the DLL.
gendef foo.dll
# 3. Generate the MSVC import library.
dlltool --input-def foo.def --output-lib foo.lib
# 4. Compile the C file using MSVC with the import library previously generated.
# There is no need for foo.dll to be present when compiling C,
# but it must be available when running the resulting binary.
cl.exe main.c foo.lib |
The last line can you explain? I have no c file I'm only using go. How can I do this? |
If you are only using Go why do you need Visual Studio? |
What version of Go are you using (
go version)?go1.13.5 windows/386
Does this issue reproduce with the latest release?
Yes
What did you do?
go build -buildmode=c-shared -o client.dll test.go
this command generated a client.h header file, it has some code like this:
typedef signed char GoInt8;
typedef unsigned char GoUint8;
typedef short GoInt16;
typedef unsigned short GoUint16;
typedef int GoInt32;
typedef unsigned int GoUint32;
typedef long long GoInt64;
typedef unsigned long long GoUint64;
typedef GoInt32 GoInt;
typedef GoUint32 GoUint;
typedef SIZE_TYPE GoUintptr;
typedef float GoFloat32;
typedef double GoFloat64;
typedef float _Complex GoComplex64;
typedef double _Complex GoComplex128;
What did you expect to see?
Hope it can be compiled in VC
What did you see instead?
But this file can not compile in Visual Studio, the error is :
Error 28 error C2061: syntax error : identifier 'GoUintptr'
Error 30 error C2061: syntax error : identifier 'GoComplex64'
Error 32 error C2061: syntax error : identifier 'GoComplex128'
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