yaole
36 lines
610 B
Markdown
36 lines
610 B
Markdown
# 简介
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输出gcl中的功能为C库
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步骤：
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- lib.go中编写要输出的函数:
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```
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//export Sm3
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func Sm3(in []byte, out []byte) {
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d := sm3.Sum(in)
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copy(out, d[:])
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}
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```
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- 生成go导出的C库(c-archive)
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```
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go build -buildmode=c-archive -o libgcl_go.a lib.go
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```
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- lib.c中编写C包装代码
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```
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int sm3(void *data, int dataLen, void *digest){
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// input check, omit
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GoSlice in = {
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data, dataLen, dataLen
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};
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GoSlice out = {
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digest, 32, 32
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};
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Sm3(in,out);
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return 0;
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}
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```
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- gcc编译gcl.c为动态库
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```
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gcc -shared -o libgcl.dylib -L. -lgcl_go gcl.c
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```
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