├── .gitignore ├── LICENSE ├── README.md ├── build.ps1 ├── call_capi ├── CMakeLists.txt └── main.cpp ├── capi ├── capi.go ├── libcapi.def └── sum.go └── go.mod /.gitignore: -------------------------------------------------------------------------------- 1 | # Binaries for programs and plugins 2 | *.exe 3 | *.exe~ 4 | *.dll 5 | *.so 6 | *.dylib 7 | 8 | # Test binary, built with `go test -c` 9 | *.test 10 | 11 | # Output of the go coverage tool, specifically when used with LiteIDE 12 | *.out 13 | 14 | # Dependency directories (remove the comment below to include it) 15 | # vendor/ 16 | 17 | .idea/ 18 | out/ 19 | call_capi/libcapi/ 20 | call_capi/cmake-build-* -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # golang-msvc 2 | golang生成支持MSVC调用的dll 3 | 4 | # 目录结构 5 | ## capi 6 | golang导出cgo的package 7 | 8 | libcapi.def: MSVC的模块定义文件, 用于编写导出的方法, 格式如下 9 | ```def 10 | EXPORTS 11 | add 12 | go_complex64 13 | go_complex128 14 | complex64_add 15 | complex128_add 16 | md5sum 17 | ``` 18 | 19 | ## call_capi 20 | c++调用golang的capi示例, 调用 golang 导出 capi 的 add, md5sum 和复数相关的方法 21 | 22 | # 步骤 23 | ## go 编译生成 dll 24 | 有两种方法可实现 25 | 26 | ### 方法1: go 编译 c-archive, 再生成 dll 27 | #### go 编译 c-archive 28 | 编译输出到 call_capi 项目的 libcapi/libcapi.a, 同时包含头文件 libcapi/libcapi.h 29 | ```sh 30 | go build -buildmode=c-archive -ldflags "-s -w" -o ./call_capi/libcapi/libcapi.a ./capi 31 | ``` 32 | 33 | #### 生成 dll 34 | 使用 MinGW 的 gcc, 根据 capi/libcapi.def 将 libcapi/libcapi.a 转换为 libcapi/libcapi.dll 35 | ```sh 36 | gcc ./capi/libcapi.def ./call_capi/libcapi/libcapi.a -shared -lwinmm -lWs2_32 -o ./call_capi/libcapi/libcapi.dll 37 | ``` 38 | 39 | ### 方法2: go 编译 c-shared, 直接生成 dll 40 | 编译输出到 call_capi 项目的 libcapi/libcapi.dll, 同时包含头文件 libcapi/libcapi.h 41 | ```sh 42 | go build -buildmode=c-shared -ldflags "-s -w" -o ./call_capi/libcapi/libcapi.dll ./capi 43 | ``` 44 | 45 | ## 生成 MSVC 支持的 lib 46 | 使用 MSVC 的 lib 命令, 根据 capi/libcapi.def 在 call_capi 项目生成 libcapi/libcapi.lib 47 | ```sh 48 | lib /def:./capi/libcapi.def /name:libcapi.dll /out:./call_capi/libcapi/libcapi.lib /MACHINE:X64 49 | ``` 50 | 如果需要生成32位的lib, 将`/MACHINE:X64`替换为`/MACHINE:X86` 51 | 52 | ## 修改 libcapi/libcapi.h 53 | golang 生成的头文件部分语法不支持 MSVC, 需要部分修改。 54 | 55 | 将`__SIZE_TYPE__`替换为`size_t` 56 | 57 | 将`float _Complex`替换为`_Fcomplex`, 将`double _Complex`替换为`_Dcomplex`, 并在代码之前加上`#include ` 58 | 59 | ```c 60 | ... 61 | typedef size_t GoUintptr; 62 | ... 63 | #include 64 | typedef _Fcomplex GoComplex64; 65 | typedef _Dcomplex GoComplex128; 66 | ``` 67 | 68 | 也可使用 sed 命令进行替换 69 | ```sh 70 | sed -i "s/__SIZE_TYPE__/size_t/g" ./call_capi/libcapi/libcapi.h 71 | sed -i "s/float\ _Complex/_Fcomplex/g" ./call_capi/libcapi/libcapi.h 72 | sed -i "s/double\ _Complex/_Dcomplex/g" ./call_capi/libcapi/libcapi.h 73 | sed -i "/_Fcomplex\ GoComplex64/i #include\ " ./call_capi/libcapi/libcapi.h 74 | ``` 75 | 76 | ## 编译 call_capi 77 | ```sh 78 | mkdir out 79 | cmake -B out ./call_capi 80 | cmake --build out --config Debug 81 | cmake --install out --config Debug 82 | ``` 83 | 84 | 编译生成的 exe 文件默认安装至 `C:\Program Files (x86)\call_capi` 85 | 86 | ## 执行结果 87 | ``` 88 | hello 89 | add(1, 3) = 4 90 | md5sum("hello world") = 5eb63bbbe01eeed093cb22bb8f5acdc3 91 | complex64_add(7+2i, 4+5i) = 11.000000+7.000000i 92 | complex128_add(-1+3i, 3+4i) = 2.000000+7.000000i 93 | ``` 94 | -------------------------------------------------------------------------------- /build.ps1: -------------------------------------------------------------------------------- 1 | param($mode) 2 | 3 | if ([String]::IsNullOrEmpty($mode)) { 4 | Write-Output "mode not set, using 's'" 5 | $mode = "s" 6 | } 7 | 8 | if ($mode -eq "a") { 9 | go build -buildmode=c-archive -ldflags "-s -w" -o ./call_capi/libcapi/libcapi.a ./capi 10 | gcc ./capi/libcapi.def ./call_capi/libcapi/libcapi.a -shared -lwinmm -lWs2_32 -o ./call_capi/libcapi/libcapi.dll 11 | } 12 | elseif ($mode -eq "s") { 13 | go build -buildmode=c-shared -ldflags "-s -w" -o ./call_capi/libcapi/libcapi.dll ./capi 14 | } 15 | 16 | lib /def:./capi/libcapi.def /name:libcapi.dll /out:./call_capi/libcapi/libcapi.lib /MACHINE:X64 17 | 18 | sed -i "s/__SIZE_TYPE__/size_t/g" ./call_capi/libcapi/libcapi.h 19 | sed -i "s/float\ _Complex/_Fcomplex/g" ./call_capi/libcapi/libcapi.h 20 | sed -i "s/double\ _Complex/_Dcomplex/g" ./call_capi/libcapi/libcapi.h 21 | sed -i "/_Fcomplex\ GoComplex64/i #include\ " ./call_capi/libcapi/libcapi.h 22 | -------------------------------------------------------------------------------- /call_capi/CMakeLists.txt: -------------------------------------------------------------------------------- 1 | cmake_minimum_required(VERSION 3.9) 2 | project(call_capi VERSION 0.1 LANGUAGES CXX) 3 | set(CMAKE_CXX_STANDARD 11) 4 | 5 | set(PROJECT_SOURCES 6 | main.cpp 7 | ) 8 | 9 | add_executable(call_capi 10 | ${PROJECT_SOURCES} 11 | ) 12 | 13 | if (MSVC) 14 | target_link_libraries(call_capi 15 | PRIVATE 16 | ${CMAKE_SOURCE_DIR}/libcapi/libcapi.lib 17 | ) 18 | else () 19 | # gcc 20 | target_link_directories(call_capi 21 | PRIVATE 22 | ${CMAKE_SOURCE_DIR}/libcapi 23 | ) 24 | target_link_libraries(call_capi 25 | PRIVATE 26 | capi 27 | ) 28 | endif () 29 | 30 | if (MSVC) 31 | install(TARGETS call_capi 32 | RUNTIME DESTINATION .) 33 | install(FILES ${CMAKE_SOURCE_DIR}/libcapi/libcapi.dll 34 | DESTINATION .) 35 | endif() 36 | -------------------------------------------------------------------------------- /call_capi/main.cpp: -------------------------------------------------------------------------------- 1 | #include 2 | #include "libcapi/libcapi.h" 3 | 4 | int main() { 5 | std::cout << "hello" << std::endl; 6 | int sum = add(1, 3); 7 | std::cout << "add(1, 3) = " << sum << std::endl; 8 | 9 | char res[33]; 10 | md5sum("hello world", res); 11 | std::cout << "md5sum(\"hello world\") = " << res << std::endl; 12 | 13 | GoComplex64 c64_res = complex64_add(go_complex64(7, 2), go_complex64(4, 5)); 14 | printf("complex64_add(7+2i, 4+5i) = %f+%fi\n", creal(c64_res), cimag(c64_res)); 15 | 16 | GoComplex128 c128_res = complex128_add(go_complex128(-1, 3), go_complex128(3, 4)); 17 | printf("complex128_add(-1+3i, 3+4i) = %f+%fi\n", creal(c128_res), cimag(c128_res)); 18 | 19 | return 0; 20 | } 21 | -------------------------------------------------------------------------------- /capi/capi.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "C" 4 | 5 | func main() {} 6 | -------------------------------------------------------------------------------- /capi/libcapi.def: -------------------------------------------------------------------------------- 1 | EXPORTS 2 | add 3 | go_complex64 4 | go_complex128 5 | complex64_add 6 | complex128_add 7 | md5sum 8 | -------------------------------------------------------------------------------- /capi/sum.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | //#include 4 | import "C" 5 | import ( 6 | "crypto/md5" 7 | "encoding/hex" 8 | "reflect" 9 | "unsafe" 10 | ) 11 | 12 | //export add 13 | func add(a, b C.int) C.int { 14 | return C.int(int(a) + int(b)) 15 | } 16 | 17 | //export go_complex64 18 | func go_complex64(a, b float32) complex64 { 19 | // gcc 和 msvc 初始化complex的方式不一样, 故统一使用go来初始化complex 20 | return complex(a, b) 21 | } 22 | 23 | //export go_complex128 24 | func go_complex128(a, b float64) complex128 { 25 | return complex(a, b) 26 | } 27 | 28 | //export complex64_add 29 | func complex64_add(a, b complex64) complex64 { 30 | return a + b 31 | } 32 | 33 | //export complex128_add 34 | func complex128_add(a, b complex128) complex128 { 35 | return a + b 36 | } 37 | 38 | // res must allocate size more than 33 39 | //export md5sum 40 | func md5sum(str *C.char, res *C.char) { 41 | m := md5.New() 42 | l := int(C.strlen(str)) 43 | m.Write(*(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{ 44 | Data: uintptr(unsafe.Pointer(str)), 45 | Len: l, 46 | Cap: l, 47 | }))) 48 | h := *(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{ 49 | Data: uintptr(unsafe.Pointer(res)), 50 | Len: 33, 51 | Cap: 33, 52 | })) 53 | hex.Encode(h, m.Sum(nil)) 54 | h[32] = 0 55 | } 56 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/iikira/golang-msvc 2 | 3 | go 1.17 4 | --------------------------------------------------------------------------------