Day2Part1

CMakeLists.txt

@@ -6,6 +6,33 @@ set(CMAKE_CXX_COMPILER /usr/bin/clang++-21)
 
 project(aoc25 VERSION 0.1.0 LANGUAGES C CXX)
 
+# Helper to add AoC day targets and auto-copy any input files
+function(aoc_add_day name src_dir)
+	# remaining args are source files
+	set(sources ${ARGN})
+
+	add_executable(${name} ${sources})
+	set_target_properties(${name} PROPERTIES CXX_STANDARD 23 CXX_STANDARD_REQUIRED ON)
+	# Use GCC toolchain compatibility for clang++-21
+	target_compile_options(${name} PRIVATE --gcc-toolchain=/usr)
+
+	# Gather common input files in the source directory
+	file(GLOB INPUT_FILES
+		"${src_dir}/*_input"
+		"${src_dir}/puzzle_input"
+		"${src_dir}/test_input"
+	)
+
+	foreach(f IN LISTS INPUT_FILES)
+		get_filename_component(fname ${f} NAME)
+		add_custom_command(TARGET ${name} POST_BUILD
+			COMMAND ${CMAKE_COMMAND} -E copy ${f} $<TARGET_FILE_DIR:${name}>/${fname}
+			COMMENT "Copying ${fname} to build directory for ${name}"
+		)
+	endforeach()
+endfunction()
+
 # Per-day subprojects (example: day1)
 add_subdirectory(day1)
+add_subdirectory(day2)