MakeFile

# Compiler and flags
CC = gcc                             # Set the compiler to GCC
CFLAGS = -Wall -Wextra -std=c11      # Compiler flags: show all warnings, use C11 standard
LDFLAGS =                            # Linker flags (none defined for now)

# Directories
SRCDIR = ./src                         # Source code directory
BUILDDIR = ./build                     # Build (object files and executables) directory
TESTDIR = ./tests                      # Test files directory

# Source and Object files
SRC = $(wildcard $(SRCDIR)/*.c)      # Find all .c files in src/
OBJ = $(patsubst $(SRCDIR)/%.c,$(BUILDDIR)/%.o,$(SRC)) # Map .c files to .o files in build/

# Executables
MAIN_EXEC = $(BUILDDIR)/main         # Main executable
TEST_EXEC = $(BUILDDIR)/test_memalloc # Test executable

# OS Detection and Platform-Specific Settings
ifeq ($(OS),Windows_NT)              # If running on Windows
    SHELL = pwsh                     # Use PowerShell 7 as the shell
    RM = Remove-Item -Force -Recurse # PowerShell command to delete files
    MKDIR = New-Item -ItemType Directory -Force # PowerShell command to create directories
    RUN_CMD = $(MAIN_EXEC).exe       # Command to run the main executable
else                                 # Assume a UNIX-like system
    SHELL = /bin/sh                  # Use the default shell for Linux/Mac
    RM = rm -rf                      # Command to delete files
    MKDIR = mkdir -p $(BUILDDIR)     # Command to create build directory
    RUN_CMD = ./$(MAIN_EXEC)         # Command to run the main executable
endif

# Default target
all: main                            # Default target is to build the main executable

# Compile main executable
main: $(MAIN_EXEC)                   # 'main' depends on the main executable

$(MAIN_EXEC): $(OBJ)                 # Main executable depends on object files
	$(CC) $(CFLAGS) -o $@ $(SRCDIR)/main.c $(OBJ) # Compile and link

# Compile test executable
test: $(TEST_EXEC)                   # 'test' depends on the test executable
	$(TEST_EXEC)                     # Run the test executable

$(TEST_EXEC): $(OBJ)                 # Test executable depends on object files
	$(CC) $(CFLAGS) -o $@ $(TESTDIR)/test_memalloc.c $(OBJ) # Compile and link

# Build object files from source files
$(BUILDDIR)/%.o: $(SRCDIR)/%.c       # Rule to compile .c files to .o files
	@$(MKDIR) $(BUILDDIR)            # Create build directory if it doesn't exist
	$(CC) $(CFLAGS) -c $< -o $@      # Compile source file into object file

# Clean target to remove build artifacts
clean:
	$(RM) $(BUILDDIR)/*              # Remove all files in build directory

# Run the main executable
run: main
	$(RUN_CMD)                       # Run the main executable

# Phony targets to avoid conflicts with files named 'all', 'main', 'test', 'clean', etc.
.PHONY: all main test clean run