Experiencing the 'Failed to Find Matching Arch for 64-bit Mach-O Input File' error when compiling your iOS project can be frustrating. This error typically occurs when you try to build your project for a specific architecture, but the input file does not match the required architecture. This guide will walk you through the steps to fix this error and provide answers to common questions related to this issue.
## Table of Contents
1. [Step-by-Step Solution](#step-by-step-solution)
2. [FAQs](#faqs)
3. [Related Links](#related-links)
## Step-by-Step Solution
Follow the steps below to resolve the 'Failed to Find Matching Arch for 64-bit Mach-O Input File' error:
### Step 1: Identify the Problematic Input File
The error message should provide information on the problematic input file. Take note of the file name and its location.
### Step 2: Verify the Architecture of the Input File
Use the `lipo` command-line tool to check the architecture of the input file. Open the terminal and run the following command:
```bash
lipo -info /path/to/your/input/file
Replace /path/to/your/input/file with the actual path to the file you identified in Step 1. The output will show the architectures included in the input file.
Step 3: Update the Project Build Settings
Open your project in Xcode and navigate to the project's Build Settings. Search for the Architectures and Valid Architectures settings. Ensure that the required architecture (64-bit) is included in the list of architectures.
Step 4: Update the Input File's Architectures
If the input file does not include the required architecture, you may need to recompile the source files with the correct architecture or obtain an updated version of the input file with the required architecture.
Step 5: Clean and Rebuild the Project
After updating the project settings and input file, clean the build folder in Xcode by selecting Product > Clean Build Folder from the menu. Then, rebuild your project to see if the error is resolved.
FAQs
1. What is Mach-O?
Mach-O (Mach Object) is the native executable file format used by macOS and iOS platforms. It is the default file format for executables, object code, shared libraries, and dynamically loaded code.
2. What is the lipo command?
lipo is a command-line tool in macOS that allows you to create, display, and manipulate fat/universal files, which contain code for multiple architectures.
3. How do I know if my input file is 64-bit?
You can check the architectures included in an input file by running the lipo -info /path/to/your/input/file command in the terminal.
4. Can I include both 32-bit and 64-bit architectures in my project?
Yes, you can include both 32-bit and 64-bit architectures in your project by specifying them in the Architectures and Valid Architectures settings in the project's Build Settings.
5. What should I do if I cannot find an updated version of the input file with the required architecture?
You may need to contact the vendor or developer of the input file to request an updated version with the required architecture. Alternatively, you can try to recompile the source files yourself, if available.