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# CMake Common Utilities
# Shared macros and functions for the demo64k build system
# =============================================================================
# demo_set_conditional_sources(VAR HEADLESS_LIST STRIP_LIST NORMAL_LIST)
# =============================================================================
# Simplifies 3-branch conditional source lists based on build mode
#
# Arguments:
# VAR - Output variable name (e.g., GPU_SOURCES)
# HEADLESS_LIST - Sources for DEMO_HEADLESS mode
# STRIP_LIST - Sources for DEMO_STRIP_EXTERNAL_LIBS mode
# NORMAL_LIST - Sources for normal builds
#
# Usage:
# demo_set_conditional_sources(GPU_SOURCES
# "src/gpu/headless_gpu.cc;src/gpu/effect.cc"
# "src/gpu/stub_gpu.cc"
# "src/gpu/gpu.cc;src/gpu/effect.cc"
# )
function(demo_set_conditional_sources VAR HEADLESS_LIST STRIP_LIST NORMAL_LIST)
if(DEMO_HEADLESS)
set(${VAR} ${HEADLESS_LIST} PARENT_SCOPE)
elseif(DEMO_STRIP_EXTERNAL_LIBS)
set(${VAR} ${STRIP_LIST} PARENT_SCOPE)
else()
set(${VAR} ${NORMAL_LIST} PARENT_SCOPE)
endif()
endfunction()
# =============================================================================
# demo_apply_size_optimizations(TARGET)
# =============================================================================
# Applies platform-specific size optimization flags to a target
#
# Arguments:
# TARGET - CMake target name
#
# Behavior:
# - Only applies if DEMO_SIZE_OPT is enabled
# - MSVC: /Os /GS- /OPT:REF /OPT:ICF
# - Apple: -Os -Wl,-dead_strip
# - Linux: -Os -ffunction-sections -fdata-sections -Wl,--gc-sections -s
#
# Usage:
# demo_apply_size_optimizations(demo64k)
function(demo_apply_size_optimizations TARGET)
if(DEMO_SIZE_OPT)
if(MSVC)
target_compile_options(${TARGET} PRIVATE /Os /GS-)
target_link_options(${TARGET} PRIVATE /OPT:REF /OPT:ICF /INCREMENTAL:NO)
elseif(APPLE)
target_compile_options(${TARGET} PRIVATE -Os)
target_link_options(${TARGET} PRIVATE -Wl,-dead_strip)
else()
target_compile_options(${TARGET} PRIVATE -Os -ffunction-sections -fdata-sections)
target_link_options(${TARGET} PRIVATE -Wl,--gc-sections -s)
endif()
endif()
endfunction()
# =============================================================================
# demo_link_libraries_ordered(TARGET)
# =============================================================================
# Links subsystem libraries in correct order with platform-specific quirks
#
# Arguments:
# TARGET - CMake target name
#
# Link Order:
# - Circular dependencies on Linux require --start-group/--end-group
# - Apple uses direct linking
# - DEMO_STRIP_EXTERNAL_LIBS mode excludes DEMO_LIBS
#
# Usage:
# demo_link_libraries_ordered(demo64k)
function(demo_link_libraries_ordered TARGET)
if(DEMO_STRIP_EXTERNAL_LIBS)
# Size measurement mode: No external libraries
if(APPLE)
target_link_libraries(${TARGET} PRIVATE 3d gpu audio procedural util)
else()
target_link_libraries(${TARGET} PRIVATE
-Wl,--start-group 3d gpu audio procedural util -Wl,--end-group
pthread m)
endif()
else()
# Normal mode: Link external libraries
if(APPLE)
target_link_libraries(${TARGET} PRIVATE 3d gpu audio procedural util ${DEMO_LIBS})
else()
target_link_libraries(${TARGET} PRIVATE
-Wl,--start-group 3d gpu audio procedural util -Wl,--end-group
${DEMO_LIBS})
endif()
endif()
endfunction()
# =============================================================================
# demo_add_test_with_deps(NAME TEST_NAME LABEL SOURCE [SOURCES...]
# [LINK libs...] [DEPENDS targets...]
# [DEFINITIONS defs...] [INCLUDES dirs...])
# =============================================================================
# Streamlined test registration with automatic dependency handling
#
# Arguments:
# NAME - Executable target name
# TEST_NAME - CTest test name
# LABEL - Test label for subsystem grouping (audio, gpu, 3d, assets, util)
# SOURCE - First source file (required)
# SOURCES... - Additional source files (parsed until keyword)
#
# Optional Keywords:
# LINK libs... - Libraries to link (parsed until next keyword)
# DEPENDS targets... - Target dependencies (parsed until next keyword)
# DEFINITIONS defs... - Compile definitions (parsed until next keyword)
# INCLUDES dirs... - Include directories (parsed until next keyword)
#
# Usage:
# demo_add_test_with_deps(test_window HammingWindowTest audio
# src/tests/audio/test_window.cc
# ${GEN_DEMO_CC}
# LINK audio util procedural ${DEMO_LIBS}
# DEPENDS generate_demo_assets
# )
function(demo_add_test_with_deps NAME TEST_NAME LABEL)
set(options "")
set(oneValueArgs "")
set(multiValueArgs LINK DEPENDS DEFINITIONS INCLUDES)
# Collect sources until we hit a keyword
set(SOURCES "")
set(current_list SOURCES)
set(keyword_mode FALSE)
foreach(arg ${ARGN})
if(arg STREQUAL "LINK" OR arg STREQUAL "DEPENDS" OR
arg STREQUAL "DEFINITIONS" OR arg STREQUAL "INCLUDES")
set(current_list ${arg})
set(keyword_mode TRUE)
else()
list(APPEND ${current_list} ${arg})
endif()
endforeach()
# Create test executable
add_executable(${NAME} ${SOURCES})
add_test(NAME ${TEST_NAME} COMMAND ${NAME})
set_tests_properties(${TEST_NAME} PROPERTIES LABELS "${LABEL}")
# Apply optional parameters
if(DEFINED LINK)
target_link_libraries(${NAME} PRIVATE ${LINK})
endif()
if(DEFINED DEPENDS)
add_dependencies(${NAME} ${DEPENDS})
endif()
if(DEFINED DEFINITIONS)
target_compile_definitions(${NAME} PRIVATE ${DEFINITIONS})
endif()
if(DEFINED INCLUDES)
target_include_directories(${NAME} PRIVATE ${INCLUDES})
endif()
endfunction()
# =============================================================================
# add_demo_executable(NAME SOURCES...)
# =============================================================================
# Creates an executable for the demo
#
# Arguments:
# NAME - Executable target name
# SOURCES - Source files
#
# Note: target_link_libraries must be called manually to ensure correct order
macro(add_demo_executable NAME)
add_executable(${NAME} ${ARGN})
endmacro()
# =============================================================================
# add_demo_test(NAME TEST_NAME LABEL SOURCES...)
# =============================================================================
# Creates a test executable and registers it with CTest (legacy macro)
#
# Arguments:
# NAME - Executable target name
# TEST_NAME - CTest test name
# LABEL - Test label for subsystem grouping
# SOURCES - Source files
#
# Note: Use demo_add_test_with_deps() for new tests
macro(add_demo_test NAME TEST_NAME LABEL)
add_executable(${NAME} ${ARGN})
add_test(NAME ${TEST_NAME} COMMAND ${NAME})
set_tests_properties(${TEST_NAME} PROPERTIES LABELS "${LABEL}")
endmacro()
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