http_fetcher編譯問題 - BBS

※ 引述《sacanner (Sam)》之銘言：
[deleted]
: 可是卻仍發生undefined reference問題（錯誤如下）
: g++ -I../include -L../lib -lhttp_fetcher t.cpp
: /var/tmp//ccjBAMrM.o(.text+0x12b): In function `main':
: : undefined reference to `http_fetch(char const*, char**)'
: CODE:
[deleted]
: int main()
: {
: char *fileBuf[4000];
: http_fetch("http://www.yahoo.com.tw", fileBuf);
: return 0;
: }
稍微下載測試後
發現http_fetch的prototype為
int http_fetch(const char *url, char **fileBuf);
對照其comment
Download the page, registering a hit. If you pass it a NULL for fileBuf,
'url' will be requested but will not remain in memory (useful for
simply registering a hit). Otherwise necessary space will be allocated
and will be pointed to by fileBuf. Note that a NULL byte is
added to the data, so the actual buffer will be the file size + 1.

看起來是你的用法錯了

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其實我想到另外一點XD
你可能需要確定他函式庫是用c還是c++編譯
如果用C編譯的話，可能在include的時候
要
extern "C" {
#include "../include/http_fetcher.h"
}
之類的
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