build: Refactor CMake back to in-tree CMakeLists

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, 82 deletions

diff --git a/cmake/lib/lib.cmake b/cmake/lib/lib.cmake
deleted file mode 100644
index 86b4418c..00000000
--- a/cmake/lib/lib.cmake
+++ /dev/null
@@ -1,82 +0,0 @@
-set(LIB_SOURCE_DIR "${CMAKE_SOURCE_DIR}/src/lib")
-set(LIB_BINARY_DIR "${CMAKE_BINARY_DIR}/src/lib")
-
-# Library configuration variables
-set(SYS_MAX_FLOWS 10240 CACHE STRING
-  "Maximum number of total flows for this system")
-set(PROG_MAX_FLOWS 4096 CACHE STRING
-  "Maximum number of flows in an application")
-set(PROG_RES_FDS 64 CACHE STRING
-  "Number of reserved flow descriptors per application")
-set(PROG_MAX_FQUEUES 32 CACHE STRING
-  "Maximum number of flow sets per application")
-
-if (NOT APPLE)
-  set(PTHREAD_COND_CLOCK "CLOCK_MONOTONIC" CACHE STRING
-    "Clock to use for condition variable timing")
-else ()
-  set(PTHREAD_COND_CLOCK "CLOCK_REALTIME" CACHE INTERNAL
-    "Clock to use for condition variable timing")
-endif ()
-
-set(SOCKET_TIMEOUT 500 CACHE STRING
-  "Default timeout for responses from IPCPs (ms)")
-set(SHM_PREFIX "ouroboros" CACHE STRING
-  "String to prepend to POSIX shared memory filenames")
-set(SHM_LOCKFILE_NAME "/${SHM_PREFIX}.lockfile" CACHE INTERNAL
-  "Filename for the POSIX shared memory lockfile")
-
-set(QOS_DISABLE_CRC TRUE CACHE BOOL
-  "Ignores ber setting on all QoS cubes")
-set(DELTA_T_MPL 60 CACHE STRING
-  "Maximum packet lifetime (s)")
-set(DELTA_T_ACK 10 CACHE STRING
-  "Maximum time to acknowledge a packet (s)")
-set(DELTA_T_RTX 120 CACHE STRING
-  "Maximum time to retransmit a packet (s)")
-set(FRCT_REORDER_QUEUE_SIZE 256 CACHE STRING
-  "Size of the reordering queue, must be a power of 2")
-set(FRCT_START_WINDOW 64 CACHE STRING
-  "Start window, must be a power of 2")
-set(FRCT_LINUX_RTT_ESTIMATOR TRUE CACHE BOOL
-  "Use Linux RTT estimator formula instead of the TCP RFC formula")
-set(FRCT_RTO_MDEV_MULTIPLIER 2 CACHE STRING
-  "Multiplier for deviation term in the RTO: RTO = sRTT + (mdev << X)")
-set(FRCT_RTO_INC_FACTOR 0 CACHE STRING
-  "Divisor for RTO increase after timeout: RTO += RTX >> X, 0: Karn/Partridge")
-set(FRCT_RTO_MIN 250 CACHE STRING
-  "Minimum Retransmission Timeout (RTO) for FRCT (us)")
-set(FRCT_TICK_TIME 5000 CACHE STRING
-  "Tick time for FRCT activity (retransmission, acknowledgments) (us)")
-set(RXM_BUFFER_ON_HEAP FALSE CACHE BOOL
-  "Store packets for retransmission on the heap instead of in packet buffer")
-set(RXM_BLOCKING TRUE CACHE BOOL
-  "Use blocking writes for retransmission")
-set(RXM_MIN_RESOLUTION 20 CACHE STRING
-  "Minimum retransmission delay (ns), as a power to 2")
-set(RXM_WHEEL_MULTIPLIER 4 CACHE STRING
-  "Factor for retransmission wheel levels as a power to 2")
-set(RXM_WHEEL_LEVELS 3 CACHE STRING
-  "Number of levels in the retransmission wheel")
-set(RXM_WHEEL_SLOTS_PER_LEVEL 256 CACHE STRING
-  "Number of slots per level in the retransmission wheel, must be a power of 2")
-set(ACK_WHEEL_SLOTS 256 CACHE STRING
-  "Number of slots in the acknowledgment wheel, must be a power of 2")
-set(ACK_WHEEL_RESOLUTION 18 CACHE STRING
-  "Minimum acknowledgment delay (ns), as a power to 2")
-set(TPM_DEBUG_REPORT_INTERVAL 0 CACHE STRING
-  "Interval at wich the TPM will report long running threads (s), 0 disables")
-set(TPM_DEBUG_ABORT_TIMEOUT 0 CACHE STRING
-  "TPM abort process after a thread reaches this timeout (s), 0 disables")
-set(KEY_ROTATION_BIT 20 CACHE STRING
-  "Bit position in packet counter that triggers key rotation (default 20 = every 2^20 packets)")
-
-if (HAVE_FUSE)
-  set(PROC_FLOW_STATS TRUE CACHE BOOL
-    "Enable flow statistics tracking for application flows")
-    if (PROC_FLOW_STATS)
-       message(STATUS "Application flow statistics enabled")
-    else ()
-       message(STATUS "Application flow statistics disabled")
-    endif ()
-endif ()