How to Remove the C Runtime Library from Your C Application

📦The C runtime library is automatically linked into C applications and provides necessary functions defined by the C standard.

💡By using Windows kernel functions directly, you can bypass the C runtime library and have more control over your code.

🔒Removing the C runtime library can make your executable smaller and reduce dependencies on specific library versions.

🔨You can replace C library functions like fopen, fread, and puts with equivalent Windows kernel functions.

🧪Disabling default security features like buffer overrun checks may be acceptable in non-security-critical applications.

Why would I want to remove the C runtime library from my application?

—Removing the C runtime library can reduce your executable's file size, make it more platform-independent, and give you more control over your code.

Does removing the C runtime library affect the portability of my application?

—Yes, removing the C runtime library will make your application less reliant on specific library versions and more portable across different platforms.

What functions can I use to replace C library functions?

—You can use Windows kernel functions like CreateFile, ReadFile, and WriteConsole as replacements for fopen, fread, and puts, respectively.

Are there any security implications to removing the C runtime library?

—Removing the C runtime library may disable security features like buffer overrun checks, so it's important to understand the impact on your application and consider alternative security measures.

Is removing the C runtime library recommended for all C applications?

—No, removing the C runtime library is a decision that depends on your specific application's requirements and trade-offs. Consider factors like file size, portability, and security before making the decision.

00:00The C runtime library is automatically linked into C applications and provides necessary functions defined by the C standard.

02:25By using Windows kernel functions directly, you can bypass the C runtime library and have more control over your code.

03:31Removing the C runtime library can make your executable smaller and reduce dependencies on specific library versions.

04:51You can replace C library functions like fopen, fread, and puts with equivalent Windows kernel functions.

09:23Disabling default security features like buffer overrun checks may be acceptable in non-security-critical applications.

13:27Removing the C runtime library can reduce your executable's file size, make it more platform-independent, and give you more control over your code.