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, 51 insertions, 0 deletions

diff --git a/src/ipcpd/unicast/CMakeLists.txt b/src/ipcpd/unicast/CMakeLists.txt
new file mode 100644
index 00000000..1e095f8b
--- /dev/null
+++ b/src/ipcpd/unicast/CMakeLists.txt
@@ -0,0 +1,51 @@
+# Unicast IPCP build configuration
+
+set(IPCP_UNICAST_TARGET ipcpd-unicast)
+
+protobuf_generate_c(DHT_PROTO_SRCS DHT_PROTO_HDRS
+  "${CMAKE_CURRENT_SOURCE_DIR}/dir/dht.proto")
+
+set(UNICAST_SOURCES
+  addr-auth.c
+  ca.c
+  connmgr.c
+  dir.c
+  dt.c
+  fa.c
+  main.c
+  pff.c
+  routing.c
+  psched.c
+  addr-auth/flat.c
+  ca/mb-ecn.c
+  ca/nop.c
+  dir/dht.c
+  pff/simple.c
+  pff/alternate.c
+  pff/multipath.c
+  pff/pft.c
+  routing/link-state.c
+  routing/graph.c
+)
+
+add_executable(${IPCP_UNICAST_TARGET}
+  ${UNICAST_SOURCES}
+  ${IPCP_SOURCES}
+  ${COMMON_SOURCES}
+  ${DHT_PROTO_SRCS}
+)
+
+target_include_directories(${IPCP_UNICAST_TARGET} PRIVATE ${IPCP_INCLUDE_DIRS})
+target_include_directories(${IPCP_UNICAST_TARGET} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+target_include_directories(${IPCP_UNICAST_TARGET} PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+target_link_libraries(${IPCP_UNICAST_TARGET} PRIVATE ouroboros-dev)
+
+ouroboros_target_debug_definitions(${IPCP_UNICAST_TARGET})
+
+install(TARGETS ${IPCP_UNICAST_TARGET} RUNTIME DESTINATION ${CMAKE_INSTALL_SBINDIR})
+
+if(BUILD_TESTS)
+  add_subdirectory(dir/tests)
+  add_subdirectory(pff/tests)
+  add_subdirectory(routing/tests)
+endif()