From 48c294105f5123dc876fbad199ec1e0166d82a18 Mon Sep 17 00:00:00 2001
From: Dimitri Staessens <dimitri@ouroboros.rocks>
Date: Tue, 23 Dec 2025 11:59:45 +0100
Subject: build: Refactor CMake modules

This moves the CMake build logic out of the source tree and splits it
up into a more modular form. The tests now have a CMakeLists.txt file
in their respective source directory.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
---
 cmake/ipcp/udp.cmake | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 cmake/ipcp/udp.cmake

(limited to 'cmake/ipcp/udp.cmake')

diff --git a/cmake/ipcp/udp.cmake b/cmake/ipcp/udp.cmake
new file mode 100644
index 00000000..7195dfa1
--- /dev/null
+++ b/cmake/ipcp/udp.cmake
@@ -0,0 +1,51 @@
+set(UDP_SOURCE_DIR "${IPCP_SOURCE_DIR}/udp")
+
+set(IPCP_UDP4_TARGET ipcpd-udp4 CACHE INTERNAL "")
+set(IPCP_UDP6_TARGET ipcpd-udp6 CACHE INTERNAL "")
+
+set(IPCP_UDP_RD_THR 3 CACHE STRING
+  "Number of reader threads in UDP IPCPs")
+set(IPCP_UDP_WR_THR 3 CACHE STRING
+  "Number of writer threads in UDP IPCPs")
+set(IPCP_UDP_MPL 5000 CACHE STRING
+    "Default maximum packet lifetime for the UDP IPCPs, in ms")
+
+# Find nsupdate and nslookup for DDNS support
+find_program(NSUPDATE_EXECUTABLE
+  NAMES nsupdate
+  DOC "The nsupdate tool that enables DDNS")
+
+find_program(NSLOOKUP_EXECUTABLE
+  NAMES nslookup
+  DOC "The nslookup tool that resolves DNS names")
+
+mark_as_advanced(NSLOOKUP_EXECUTABLE NSUPDATE_EXECUTABLE)
+
+if (NSLOOKUP_EXECUTABLE AND NSUPDATE_EXECUTABLE)
+  set(DISABLE_DDNS FALSE CACHE BOOL "Disable DDNS support")
+  if (NOT DISABLE_DDNS)
+    message(STATUS "DDNS support enabled")
+    set(HAVE_DDNS TRUE CACHE INTERNAL "")
+  else ()
+    message(STATUS "DDNS support disabled by user")
+    unset(HAVE_DDNS CACHE)
+  endif ()
+else ()
+  if (NSLOOKUP_EXECUTABLE)
+    message(STATUS "Install nsupdate to enable DDNS support")
+  elseif (NSUPDATE_EXECUTABLE)
+    message(STATUS "Install nslookup to enable DDNS support")
+  else ()
+    message(STATUS "Install nslookup and nsupdate to enable DDNS support")
+  endif ()
+endif ()
+
+add_executable(${IPCP_UDP4_TARGET} "${UDP_SOURCE_DIR}/udp4.c" ${IPCP_SOURCES})
+add_executable(${IPCP_UDP6_TARGET} "${UDP_SOURCE_DIR}/udp6.c" ${IPCP_SOURCES})
+
+foreach(target ${IPCP_UDP4_TARGET} ${IPCP_UDP6_TARGET})
+  target_include_directories(${target} PRIVATE ${IPCP_INCLUDE_DIRS})
+  target_link_libraries(${target} PUBLIC ouroboros-dev)
+endforeach()
+
+install(TARGETS ${IPCP_UDP4_TARGET} ${IPCP_UDP6_TARGET} RUNTIME DESTINATION ${CMAKE_INSTALL_SBINDIR})
-- 
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