feat: auto-detect libnet

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.25)
 
 # Set the project name and version
 project(IGMPPacketGenerator VERSION 1.0)
@@ -7,11 +7,18 @@ project(IGMPPacketGenerator VERSION 1.0)
 set(CMAKE_C_STANDARD 11)
 set(CMAKE_C_STANDARD_REQUIRED True)
 
-# Find the libnet library
-find_package(Libnet REQUIRED)
-
 # Add the executable
-add_executable(igmp_packet_generator src/igmpgen.c)
+add_executable(igmpgen src/igmpgen.c)
+
+# Detect the net library
+find_library(LIBNET_LIBRARY NAMES net libnet libnet1 REQUIRED)
+message(STATUS "libnet detected as ${LIBNET_LIBRARY}")
+
+# Add the directories where the compiler can find the libnet headers
+target_include_directories(igmpgen PRIVATE /usr/include)
+
+# Add the directories where the compiler can find the libnet libraries
+target_link_directories(igmpgen PRIVATE /usr/lib)
 
 # Link the executable to the libnet library
-target_link_libraries(igmp_packet_generator Libnet::Libnet)
+target_link_libraries(igmpgen ${LIBNET_LIBRARY})

src/Makefile

@@ -1,10 +0,0 @@
-IGMPPROG=igmpgen
-CFLAGS=-Werror -Wall `libnet-config --defines` -D_DEFAULT_SOURCE
-LDFLAGS=`libnet-config --libs`
-
-all:
-	gcc $(CFLAGS) $(IGMPPROG).c -o $(IGMPPROG) $(LDFLAGS)
-
-clean:
-	rm -f $(IGMPPROG)
-