c++ - 无法链接 libcurl。(Dev-C++)

Question

这是巨大焦虑的根源。我似乎无法让它做任何事情。我正在考虑毁掉整个项目。为什么链接器不工作？

我一直坐着看很多不同的链接，但我不明白如何解决它。我知道我已经正确安装了库，但是，我似乎无法链接它。我在 System32 文件中有 libcurl.dll 。然而，我仍然不知道该怎么办。我要疯狂地试图让它发挥作用。我在项目选项>目录>库目录、项目选项>目录>包含目录或项目选项>目录>资源目录中没有任何文件。在项目选项>参数>链接器中:

"../Program Files (x86)/Dev-Cpp/MinGW64/lib/libcurl.a"

所以，我不知道还能做什么。我已经坐在这里大约一周了，试图自己解决这个问题。我可能应该早点寻求帮助 x.x 也许我缺少 libcurl 的文件，但我对此表示怀疑，因为我下载了整个文件。我不知道是否是我的防火墙诺顿阻止了它。如果是的话我该如何授予权限？我不知道问题是什么。有人可以解释一下吗？我确实查看了任何人在此提供的所有解决方案

我的MakeFile:

# Project: Project1
# Makefile created by Dev-C++ 5.11

CPP      = g++.exe
CC       = gcc.exe
WINDRES  = windres.exe
OBJ      = Project.o
LINKOBJ  = Project.o
LIBS     = -L"C:/Program Files (x86)/Dev-Cpp/MinGW64/lib" -L"C:/Program Files (x86)/Dev-Cpp/MinGW64/x86_64-w64-mingw32/lib" -static-libgcc "../Program Files (x86)/Dev-Cpp/MinGW64/lib/libcurl.a"
INCS     = -I"C:/Program Files (x86)/Dev-Cpp/MinGW64/include" -I"C:/Program Files (x86)/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"C:/Program Files (x86)/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include"
CXXINCS  = -I"C:/Program Files (x86)/Dev-Cpp/MinGW64/include" -I"C:/Program Files (x86)/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"C:/Program Files (x86)/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include" -I"C:/Program Files (x86)/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++"
BIN      = Project1.exe
CXXFLAGS = $(CXXINCS) 
CFLAGS   = $(INCS) 
RM       = rm.exe -f

.PHONY: all all-before all-after clean clean-custom

all: all-before $(BIN) all-after

clean: clean-custom
    ${RM} $(OBJ) $(BIN)

$(BIN): $(OBJ)
    $(CPP) $(LINKOBJ) -o $(BIN) $(LIBS)

Project.o: Project.cpp
    $(CPP) -c Project.cpp -o Project.o $(CXXFLAGS)

源代码:

#include <curl/curl.h>
#include <iostream>

int main( void )
{
    CURL *curl;
    CURLcode res;

    curl = curl_easy_init();
    if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "http://google.com");
        res = curl_easy_perform(curl);
        curl_easy_cleanup(curl);
    }
    return 0;
}

不断弹出的错误:

g++.exe Project.o -o Project1.exe -L"C:/Program Files (x86)/Dev-
Cpp/MinGW64/lib" -L"C:/Program Files (x86)/Dev-Cpp/MinGW64/x86_64-w64-
mingw32/lib" -static-libgcc "../Program Files (x86)/Dev-
Cpp/MinGW64/lib/libcurl.a"
Project.o:Project.cpp:(.text+0x16): undefined reference to `__imp_curl_easy_init'
Project.o:Project.cpp:(.text+0x41): undefined reference to `__imp_curl_easy_setopt'
Project.o:Project.cpp:(.text+0x5c): undefined reference to `__imp_curl_easy_setopt'
Project.o:Project.cpp:(.text+0x6c): undefined reference to `__imp_curl_easy_perform'
Project.o:Project.cpp:(.text+0x83): undefined reference to `__imp_curl_easy_strerror'
Project.o:Project.cpp:(.text+0xb5): undefined reference to `__imp_curl_easy_cleanup'
collect2.exe: error: ld returned 1 exit status
C:\Projects\Makefile.win:25: recipe for target 'Project1.exe' failed
mingw32-make.exe: *** [Project1.exe] Error 1

Answer 1

这可能会更好，因为

-L"C:/Program Files (x86)/Dev-Cpp/MinGW64/lib" -lcurl

-L 参数将目录添加到库搜索路径，-l 参数指定要查找的库。