Question

我需要使用libcurl的静态库，我找到了生成库的this github rep。

现在，我尝试使用静态库libcurl_a.lib编译一段使用curl的简单代码，但没有成功。

首先，我错过了-DCURL_STATICLIB标志，并且我得到了一些未定义的引用错误：

#import "LoginViewController.h"
#import <QuartzCore/QuartzCore.h>

@interface LoginViewController ()

- (void)toggleHiddenState:(BOOL)shouldHide;

@end

@implementation LoginViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    [self toggleHiddenState:YES];
    self.lblLoginStatus.text = @"";

    self.loginButton.readPermissions = @[@"public_profile", @"email"];
    self.loginButton.layer.cornerRadius = 0;
    [self.loginButton.layer setBorderWidth:0.0f];

    self.loginButton.delegate = self;


//    UIImageView *image = nil;
//    
//    for (NSObject *pic in [self.profilePicture subviews]) {
//        if ([pic isMemberOfClass:[UIImageView class]]) {
//            UIImageView *objImg = (UIImageView *)pic;
//            image = objImg.image;
//            break;
//        }
//    }
//    
//    self.view.backgroundColor = [UIColor colorWithPatternImage:image];
//
    // Do any additional setup after loading the view.
}

-(void)toggleHiddenState:(BOOL)shouldHide{
    self.lblUsername.hidden = shouldHide;
    self.lblEmail.hidden = shouldHide;
    self.profilePicture.hidden = shouldHide;
    self.loggedinwallpaper.hidden = shouldHide;
    self.FBlogout.hidden = shouldHide;
}

-(void)toggleUnhiddenState:(BOOL)shouldShow{
    self.loggedinwallpaper.hidden = NO;
}

-(void)loginViewShowingLoggedInUser:(FBLoginView *)loginView{
    self.lblLoginStatus.text = @"";

    [self toggleHiddenState:NO];
    [self toggleUnhiddenState:YES];
}

-(void)loginViewShowingLoggedOutUser:(FBLoginView *)loginView{
    self.lblLoginStatus.text = @"";

    [self toggleHiddenState:YES];
}

-(void)loginViewFetchedUserInfo:(FBLoginView *)loginView user:(id<FBGraphUser>)user{
    NSLog(@"%@", user);
    self.profilePicture.profileID = user.objectID;
    self.lblUsername.text = user.name;
    self.lblEmail.text = [user objectForKey:@"email"];
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UIViewController *homeViewController = (UIViewController *)[storyboard instantiateViewControllerWithIdentifier:@"HomeViewController"];
    [self presentViewController:homeViewController animated:YES completion:nil];

//    
//    for (NSObject *obj in [self.profilePicture subviews]) {
//        if ([obj isMemberOfClass:[UIImageView class]]) {
//            UIImageView *objImg = (UIImageView *)obj;
//            image = objImg.image;
//            break;
//        }
//    }
}



-(void)loginView:(FBLoginView *)loginView handleError:(NSError *)error{
    NSLog(@"%@", [error localizedDescription]);
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
//- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
//    UIImage *image = _profilePicture;
//    HomeViewController *homeviewController = (HomeViewController *)segue.destinationViewController;
//    homeviewController.homepic = image;
//

    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
//}


@end

旗帜解决了它，但现在我得到了这些：

undefined reference to `curl_easy_init'
undefined reference to `curl_easy_setopt'
undefined reference to `curl_easy_setopt'
undefined reference to `curl_easy_perform'
undefined reference to `curl_easy_strerror'
undefined reference to `curl_easy_cleanup'

我被困在这里，我不知道如何解决这个未解决的外部符号。

任何人都可以帮助我吗？谢谢

Answer 1

可能是您正在链接错误版本的kernel32.lib。你做x64构建吗？如果是这样，您需要更正库路径。

Answer 2

解决方案：

github存储库.bat文件存在问题，似乎只适用于最新的VS版本。我使用了较旧版本的build.bat并且工作正常。

供参考：使用VS 2005编译。

编译卷曲Visual Studio - 未解析的外部符号

2 个答案: