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, 17 insertions, 29 deletions

diff --git a/src/irmd/reg/tests/CMakeLists.txt b/src/irmd/reg/tests/CMakeLists.txt
index 759d29b4..e8521545 100644
--- a/src/irmd/reg/tests/CMakeLists.txt
+++ b/src/irmd/reg/tests/CMakeLists.txt
@@ -1,17 +1,9 @@
-get_filename_component(tmp ".." ABSOLUTE)
-get_filename_component(src_folder "${tmp}" NAME)
+get_filename_component(PARENT_PATH ${CMAKE_CURRENT_SOURCE_DIR} DIRECTORY)
+get_filename_component(PARENT_DIR ${PARENT_PATH} NAME)
 
 compute_test_prefix()
 
-# Set include directories for tests
-include_directories(${CMAKE_CURRENT_SOURCE_DIR})
-include_directories(${CMAKE_CURRENT_BINARY_DIR})
-include_directories(${CMAKE_SOURCE_DIR}/include)
-include_directories(${CMAKE_BINARY_DIR}/include)
-include_directories(${CMAKE_SOURCE_DIR}/src/irmd)
-include_directories(${CMAKE_BINARY_DIR}/src/irmd)
-
-create_test_sourcelist(${src_folder}_tests test_suite.c
+create_test_sourcelist(${PARENT_DIR}_tests test_suite.c
   # Add new tests here
   flow_test.c
   ipcp_test.c
@@ -21,25 +13,21 @@ create_test_sourcelist(${src_folder}_tests test_suite.c
   reg_test.c
 )
 
-add_executable(${src_folder}_test ${${src_folder}_tests})
-
-disable_test_logging_for_target(${src_folder}_test)
-target_link_libraries(${src_folder}_test ouroboros-common)
+add_executable(${PARENT_DIR}_test ${${PARENT_DIR}_tests})
 
-if (CMAKE_BUILD_TYPE MATCHES "Debug*")
-  add_compile_flags(${src_folder}_test -DCONFIG_OUROBOROS_DEBUG)
-endif ()
+target_include_directories(${PARENT_DIR}_test PRIVATE
+  ${CMAKE_CURRENT_SOURCE_DIR}
+  ${CMAKE_CURRENT_BINARY_DIR}
+  ${CMAKE_SOURCE_DIR}/include
+  ${CMAKE_BINARY_DIR}/include
+  ${CMAKE_SOURCE_DIR}/src/irmd
+  ${CMAKE_BINARY_DIR}/src/irmd
+)
 
-add_dependencies(build_tests ${src_folder}_test)
+disable_test_logging_for_target(${PARENT_DIR}_test)
+target_link_libraries(${PARENT_DIR}_test PRIVATE ouroboros-common)
+ouroboros_target_debug_definitions(${PARENT_DIR}_test)
 
-set(tests_to_run ${${src_folder}_tests})
-if(CMAKE_VERSION VERSION_LESS "3.29.0")
-  remove(tests_to_run test_suite.c)
-else ()
-  list(POP_FRONT tests_to_run)
-endif()
+add_dependencies(build_tests ${PARENT_DIR}_test)
 
-foreach(test ${tests_to_run})
-  get_filename_component(test_name ${test} NAME_WE)
-  add_test(${TEST_PREFIX}/${test_name} ${CMAKE_CURRENT_BINARY_DIR}/${src_folder}_test ${test_name})
-endforeach(test)
+ouroboros_register_tests(TARGET ${PARENT_DIR}_test TESTS ${${PARENT_DIR}_tests})