Vscodium issue

[DanielRein-1]

am on linux using vscodium when i run files that have math.h i get an error how can i solve this to link my code with the math library

[aaronthefullstackengineer]

Hi! The issue you’re encountering is common when compiling C/C++ code that uses math.h. Functions like sin(), cos(), sqrt(), etc., are part of the math library, which is separate and needs to be linked explicitly.

How to fix it

1. Using gcc or g++ from the terminal

Add -lm at the end of your compile command:

gcc myfile.c -o myprogram -lm

or for C++:

g++ myfile.cpp -o myprogram -lm

• -l tells the linker to link a library.
• m is the math library (libm).

2. If using tasks in VSCodium

If you are building via a task or using the built-in terminal, make sure the compile command includes -lm.

Example tasks.json snippet:

{
  "label": "build math program",
  "type": "shell",
  "command": "gcc",
  "args": [
    "${file}",
    "-o",
    "${fileBasenameNoExtension}",
    "-lm"
  ],
  "group": {
    "kind": "build",
    "isDefault": true
  }
}

3. Common mistakes

• Placing -lm before the source file may fail on some systems. Always place -lm at the end.
• Ensure you actually have the math library installed (on Linux it usually comes with glibc, so it’s normally available).

Summary:

• Add -lm when compiling.
• Make sure it comes after your source files in the command.
• This will correctly link the math library and resolve math.h function errors.

[DanielRein-1]

Thank you bro but i fixed it while ago

…

On Sat, 1 Nov 2025, 05:36 Rodrick Heffley, ***@***.***> wrote: Hi! The issue you’re encountering is common when compiling C/C++ code that uses math.h. Functions like sin(), cos(), sqrt(), etc., are part of the *math library*, which is separate and needs to be linked explicitly. How to fix it 1. Using gcc or g++ from the terminal Add -lm at the end of your compile command: gcc myfile.c -o myprogram -lm or for C++: g++ myfile.cpp -o myprogram -lm - -l tells the linker to link a library. - m is the math library (libm). 2. If using tasks in VSCodium If you are building via a task or using the built-in terminal, make sure the compile command includes -lm. Example tasks.json snippet: { "label": "build math program", "type": "shell", "command": "gcc", "args": [ "${file}", "-o", "${fileBasenameNoExtension}", "-lm" ], "group": { "kind": "build", "isDefault": true } } 3. Common mistakes - Placing -lm *before* the source file may fail on some systems. Always place -lm *at the end*. - Ensure you actually have the math library installed (on Linux it usually comes with glibc, so it’s normally available). *Summary:* - Add -lm when compiling. - Make sure it comes after your source files in the command. - This will correctly link the math library and resolve math.h function errors. — Reply to this email directly, view it on GitHub <#1972 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BFUYYNAI7NYZ4HNHQKIGZTL32QMDBAVCNFSM6AAAAACK2RDUHWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIOBUGM3TANI> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[aaronthefullstackengineer]

My bad, I was just trying to work on unanswered questions in the discussion.

I am always here to help