Makefile

# Define the compiler and compiler flags
CC = gcc
CFLAGS = -Wall -Wextra -std=c11

# Define the special library paths for OpenSSL
OPENSSL_INCLUDE = -I$(shell brew --prefix openssl)/include
OPENSSL_LIB = -L$(shell brew --prefix openssl)/lib

# Define the name of the final executables
SERVER_TARGET = server
CLIENT_TARGET = client

# Source files
SERVER_SRC = server.c
CLIENT_SRC = client.c
SHAM_SRC = sham.c
SHAM_HEADER = sham.h

# Object files
SERVER_OBJ = $(SERVER_SRC:.c=.o)
CLIENT_OBJ = $(CLIENT_SRC:.c=.o)
SHAM_OBJ = $(SHAM_SRC:.c=.o)

# The main rule to build all targets
all: $(SERVER_TARGET) $(CLIENT_TARGET)

# Rule to build the server executable
$(SERVER_TARGET): $(SERVER_OBJ) $(SHAM_OBJ)
	$(CC) $(CFLAGS) $(OPENSSL_INCLUDE) $(OPENSSL_LIB) $(SERVER_OBJ) $(SHAM_OBJ) -o $@ -lcrypto

# Rule to build the client executable
$(CLIENT_TARGET): $(CLIENT_OBJ) $(SHAM_OBJ)
	$(CC) $(CFLAGS) $(OPENSSL_INCLUDE) $(OPENSSL_LIB) $(CLIENT_OBJ) $(SHAM_OBJ) -o $@ -lcrypto

# Rule for compiling .c files into .o files
# This will handle server.c, client.c, and sham.c
%.o: %.c $(SHAM_HEADER)
	$(CC) $(CFLAGS) $(OPENSSL_INCLUDE) -c $< -o $@

# A clean rule to remove generated files
.PHONY: clean all
clean:
	rm -f $(SERVER_OBJ) $(CLIENT_OBJ) $(SHAM_OBJ) $(SERVER_TARGET) $(CLIENT_TARGET)