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, 14 insertions, 22 deletions

diff --git a/cmake/utils/CMakeUninstall.cmake.in b/cmake/utils/CMakeUninstall.cmake.in
index 985b31b2..b8bba5fd 100644
--- a/cmake/utils/CMakeUninstall.cmake.in
+++ b/cmake/utils/CMakeUninstall.cmake.in
@@ -1,29 +1,21 @@
-if(NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
+if (NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
   message(FATAL_ERROR "Cannot find install manifest: @CMAKE_BINARY_DIR@/install_manifest.txt")
-endif(NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
+endif()
 
 file(READ "@CMAKE_BINARY_DIR@/install_manifest.txt" files)
 string(REGEX REPLACE "\n" ";" files "${files}")
-foreach(file ${files})
+foreach (file ${files})
   message(STATUS "Uninstalling $ENV{DESTDIR}${file}")
-  if(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
-    if(CMAKE_VERSION VERSION_LESS "3.28.0")
-      exec_program(
-        "@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
-        OUTPUT_VARIABLE rm_out
-        RETURN_VALUE rm_retval
-        )
-    else()
-      execute_process(
-        COMMAND @CMAKE_COMMAND@ -E remove "$ENV{DESTDIR}${file}"
-        RESULT_VARIABLE rm_out
-        ERROR_VARIABLE rm_retval
-        )
-    endif ()
-    if(NOT "${rm_retval}" STREQUAL "" AND NOT "${rm_retval}" STREQUAL 0)
+  if (IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+    execute_process(
+      COMMAND @CMAKE_COMMAND@ -E remove "$ENV{DESTDIR}${file}"
+      RESULT_VARIABLE rm_out
+      ERROR_VARIABLE rm_retval
+    )
+    if (NOT "${rm_retval}" STREQUAL "" AND NOT "${rm_retval}" STREQUAL 0)
       message(FATAL_ERROR "Problem when removing $ENV{DESTDIR}${file}")
-    endif(NOT "${rm_retval}" STREQUAL "" AND NOT "${rm_retval}" STREQUAL 0)
-  else(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+    endif()
+  else()
     message(STATUS "File $ENV{DESTDIR}${file} does not exist.")
-  endif(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
-endforeach(file)
+  endif()
+endforeach ()