Experiment: Libelfin setup

CMakeLists.txt

@@ -35,8 +35,6 @@ include(cmake/GPL-3.0-or-later.cmake)
 
 set(DEV_MODE false CACHE BOOL "Enable developer options in this CMake, like packaging.\
     They should be ignored, when user just wants to build this project.")
-set(FORCE_ELFLIB_STATIC false CACHE BOOL
-        "Use included statically linked libelf even if system one is available.")
 set(SANITIZERS "address,undefined" CACHE STRING
         "Runtime sanitizers to use in debug builds.
     Column separated subset of {address, memory, undefined, thread} or none.
@@ -226,30 +224,11 @@ if ("${WASM}")
 else ()
     # Not available for WASM
     enable_testing()
-
-    if (NOT "${FORCE_ELFLIB_STATIC}")
-        find_package(LibElf)
-        if ("${LibElf_FOUND}")
-            include(CheckSymbolExists)
-            check_symbol_exists(EM_RISCV "gelf.h" LIBELF_HAS_RISCV)
-            if ("${LIBELF_HAS_RISCV}")
-                # Turn non-cmake library into a cmake target
-                add_library(libelf INTERFACE)
-                target_link_libraries(libelf INTERFACE ${LIBELF_LIBRARY})
-                target_include_directories(libelf INTERFACE ${LIBELF_INCLUDE_DIR})
-                message(STATUS "Using system libelf")
-            else ()
-                message(STATUS "System libelf does not support RISC-V")
-                set(LibElf_FOUND FALSE) # Force fallback
-            endif ()
-        endif ()
-    endif ()
 endif ()
 
-if ("${WASM}" OR "${FORCE_ELFLIB_STATIC}" OR NOT "${LibElf_FOUND}")
-    message(STATUS "Using local libelf fallback.")
-    add_subdirectory("external/libelf")
-endif ()
+# Always use libelfin (modern C++ ELF library)
+message(STATUS "Using libelfin (C++ ELF library)")
+add_subdirectory("external/libelfin")
 
 # Detect Qt used qt version
 # Based on article https://www.steinzone.de/wordpress/how-to-support-both-qt5-and-qt6-using-cmake/