Lua调用c函数出错，以下是简单示例，为什么打印出来都是对的，但调用时就是nil #2029
Replies: 4 comments 4 replies
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用其它版本的lua库编译.so都是正常的，唯独用skynet自带的lua库编译就会遇到这个问题 |
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把这个去掉试试 -L../skynet/3rd/lua |
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不行，需要链接lua库 |
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@sniper00 只有先把table里的key全部转成小写才能正确调用，但实际打印出来table里的key本来就是小写 |
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怀疑你链接了两个 luaVM 库 |
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去掉-L../skynet/3rd/lua这里就链接错误了，就是这样了 |
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macosx? 添加一个 -undefined dynamic_lookup 这个link选项 |
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谢谢大哥，加了 -undefined dynamic_lookup这个就搞定了，可能就是链接了两个库的原因，把-llua换成 -undefined dynamic_lookup就搞定了 |
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myTest.c
#include <lua.h>
#include <lauxlib.h>
#include <stdio.h>
static int test1(lua_State *L)
{
printf("test1\n");
return 0;
}
extern int luaopen_myTest(lua_State *L)
{
luaL_Reg l[] = {
{"test1", test1},
{NULL, NULL}};
luaL_newlib(L, l);
return 1;
}
编译成.o的命令是gcc -g -Wall --shared -fPIC -o ../skynet/luaclib/myTest.so myTest.c -I../skynet/3rd/lua -I. -L../skynet/3rd/lua -llua
test.lua
local test=require"myTest"
for k, v in pairs(test) do
print(k, v)
end
test:test1();
打印出来是正确的，但是test:test()是空。
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