README.md

Mojo 🔥 Programming

Welcome to the Mojo Programming repository!
This repo contains programming problems and solutions implemented using the Mojo language.

---

📌 Running mojo in google colab

Run the following commands in notebook cells.

Install magic:

!curl -ssL https://magic.modular.com/ | bash

---

📌 Issues & Fixes

If running Mojo on Ubuntu gives an error like:

No suitable compiler found or similar build issues,

Run the following commands to install the necessary dependencies:

sudo apt update
sudo apt install -y build-essential

/usr/bin/ld: cannot find -lz: No such file or directory

/usr/bin/ld: cannot find -ltinfo: No such file or directory

Means the linker (ld) is unable to find two required libraries:

• -lz → the zlib compression library

• -ltinfo → the termcap/info library, part of ncurses

Run the following commands to install the necessary dependencies:

sudo apt-get update
sudo apt-get install zlib1g-dev libtinfo-dev

• zlib1g-dev: Provides libz.so
• libtinfo-dev: Provides libtinfo.so (used for terminal interfaces)

Upadate PATH:

import os
os.environ['PATH'] += ':/root/.modular/bin'

---

Create a example mojo project:

!magic init example --format mojoproject

---

Go inside project folder:

%cd example/

Create a sample hello.mojo file:

%%bash
cat > hello.mojo <<EOF
fn main():
  print("Hello word from mojo!")
EOF

---

Run the mojo program:

!magic run mojo hello.mojo

---

Build and run the binary if you want:

!magic run mojo build hello.mojo
!./hello

📌 Check out only the cuda folder

Use the following shell script snippet to checkout only the cuda folder

# CUDA compiler
NVCC := nvcc

# Directories
INCLUDE_DIR := include
SRC_DIR := src
BUILD_DIR := build

# Source files
SRCS := $(wildcard $(SRC_DIR)/*.cu)
TARGET := $(BUILD_DIR)/histogram

# Flags
NVCC_FLAGS := -I$(INCLUDE_DIR) -O2

# Default rule
all: $(TARGET)

# Linking and compilation
$(TARGET): $(SRCS) | $(BUILD_DIR)
	$(NVCC) $(NVCC_FLAGS) $(SRCS) -o $@

# Create build directory if it doesn't exist
$(BUILD_DIR):
	mkdir -p $(BUILD_DIR)

# Cleanup rule
clean:
	rm -rf $(BUILD_DIR)