build: Refactor CMake back to in-tree CMakeListsbe

This moves the build definitions back to src/ subdirectories
(CMakeLists.txt per component). Configuration and dependencies are
kept out of tree. Configuration options are bundled into cmake/config/
modules. Dependencies are grouped by component (system/, crypt/, eth/,
coverage/, etc.). It now consistently uses target-based commands
(target_include_directories, target_link_libraries) instead of global
include_directories(). Proper PRIVATE/PUBLIC visibility for executable
link libraries. CONFIG_OUROBOROS_DEBUG now properly set based on being
a valid debug config (not just checking the string name).

It also adds OuroborosTargets export for find_package() support and
CMake package config files (OuroborosConfig.cmake) for easier
integration with CMake projects.

The build logic now follows more idiomatic CMake practices with
configuration separated from target definitions.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

1 files changed, 0 insertions, 57 deletions

diff --git a/cmake/ipcp/udp.cmake b/cmake/ipcp/udp.cmake
deleted file mode 100644
index 360330c5..00000000
--- a/cmake/ipcp/udp.cmake
+++ /dev/null
@@ -1,57 +0,0 @@
-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()
-
-include(utils/AddCompileFlags)
-if (CMAKE_BUILD_TYPE MATCHES "Debug*")
-  add_compile_flags(${IPCP_UDP4_TARGET} -DCONFIG_OUROBOROS_DEBUG)
-  add_compile_flags(${IPCP_UDP6_TARGET} -DCONFIG_OUROBOROS_DEBUG)
-endif ()
-
-install(TARGETS ${IPCP_UDP4_TARGET} ${IPCP_UDP6_TARGET} RUNTIME DESTINATION ${CMAKE_INSTALL_SBINDIR})