Xcode12 simulator compilation error

After upgrading Xcode to 12.0.1, the following error occurred in simulator compilation
Could not find module ‘xxxxxxx’ for target ‘arm64-apple-ios-simulator’; found: x86_ 64-apple-ios-simulator, x86_ 64
many methods have been found on the Internet, but they can’t be solved. Later, they have been solved through research. Here’s a record

First of all, make clear the concept

There is an architecture option in

Xcode, and its value is standard architectures – $(arcs)_ Standard) is (armv7 and arm64) in real machine compilation, and (x86) in simulator compilation_ If the build active architectures only option in Xcode is yes, it means that only the current architecture will be compiled. For real computers, it is generally arm64, and the emulator is usually x86_ 64. If it is no, it means that the supported architectures are compiled at the same time. The exclusive architectures option in Xcode of the above architectures means that the excluded architectures are filled in here. Therefore, if arm64 is used here, it means that you do not want to compile the valid in Xcode_ As for the arcs option, it’s the current effective architecture (I’m also dizzy. Apple is so complicated that it needs this when it has 1). Generally, the value filled in here is the same as 1

So here comes the question…. The problem I encountered was that I filled in arm64 arm64e in 4, so the compiler simulator kept reporting errors, and then changed all kinds of things, including the architecture of the third Library in pods.

Solution
although Standard Architecture (x86) is set in 1_ However, the effective architecture in 4 is arm64, arm64e, so only arm64 can be used for the simulator. (it is said that the simulator of xcode12 supports arm64, but my computer is i5, so this one doesn’t use arm64). So the module he compiled is for ‘arm64 Apple IOS simulator’, but the simulator is found: x86_ 64-apple-ios-simulator。 So I made a mistake if you encounter the same type of mistakes, you can think clearly about the relationship between 1, 2, 3 and 4.

Pod component

post_install do |installer|
installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
        if config.name == 'Debug'
          config.build_settings["VALID_ARCHS"] = "arm64 arm64e x86_64 i386"
        else
          config.build_settings["VALID_ARCHS"] = "arm64 arm64e"
        end
    end
end
end

Finally, the project clean recompile, OK

Mac OpenSSL not found/loading failed

OpenSSL is a secure socket layer cipher library, including the main cryptographic algorithms, commonly used key and certificate encapsulation management functions and SSL protocol, and provides a wealth of applications for testing or other purposes.

Mac OSX install new OpenSSL

Currently, Mac OSX can install the specified version of OpenSSL through brew.

Confirm the version and location of the installed OpenSSL

$ which openssl

Determine version

$ openssl version

Brew install OpenSSL

$ brew install openssl

Brew update OpenSSL

$ brew upgrade openssl

Brew force link to OpenSSL

$ brew link openssl –force

The above is the introduction of updating OpenSSL under Mac to the latest version.

 
An error occurred when installing the software through homebrew or other ways

Error running ‘requirements_ osx_ brew_ libs_ install openssl’Library not loaded: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib (LoadError)

It may be caused by not installing or environment variable problems (you can judge by inputting OpenSSL command in the terminal and viewing feedback information)

1. You can solve this problem by re installing OpenSSL

Steps to re install OpenSSL:

Remove OpenSSL (other versions may exist in the removal method. It is recommended to uninstall all versions through uninstall)

brew remove openssl

Uninstall all versions of OpenSSL

brew uninstall –force openssl

Install OpenSSL

brew install openssl

Configure environment variables

echo ‘export PATH=”/usr/local/opt/openssl/bin:$PATH”‘ >& gt; ~/. bash_ profile

The error is as follows:

ld: library not found for -lXXX

clang: error: linker command failed with exit code 1 (use -v to see invocati

When we refer to static libraries, we do not configure library search paths, which results in an error

resolvent:

Build settings – library search paths view the path of the XXX file. If the path is wrong or there is no path, add the correct path again, and then compile Xcode.

Ambiguous reference to member ‘dataTask(with:completionHandler:)’
let request = NSMutableURLRequest(url: URL(string: “Your API URL here” ,param: param))!,
cachePolicy: .useProtocolCachePolicy,
timeoutInterval:”Your request timeout time in Seconds”)
request.httpMethod = “POST”
request.allHTTPHeaderFields = headers as? [String : String]
let dataTask = URLSession.shared.dataTask(with: request ) {data,response,error in
let httpResponse = response as? HTTPURLResponse

    if (error != nil) {
     print(error)
     } else {
     print(httpResponse)
     }

    DispatchQueue.main.async {
       //Update UI here
    }

}
dataTask.resume()

Solution: just make request as URLRequest
let dataTask = URLSession.shared.dataTask(with: request as URLRequest)