CMakeLists.txt

cmake_minimum_required(VERSION 3.20)

project(i8080emu LANGUAGES C)

set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_C_EXTENSIONS OFF)

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

# Default compiler
if(NOT CMAKE_C_COMPILER)
  find_program(GCC gcc)
  if(GCC)
    set(CMAKE_C_COMPILER ${GCC})
  endif()
endif()

# Base flags
add_compile_options(-Wall -Wextra -Wpedantic)
# Extra base flags
add_compile_options(
  -Wconversion
  -Wshadow
  -Wcast-qual
  -Wcast-align
  -Wfloat-equal
  -Wformat=2
  -Wformat-overflow
  -Wformat-security
  -Wformat-signedness
  -Wmissing-declarations
  -Wmissing-include-dirs
  -Winline
  -Wpointer-arith
  -Wredundant-decls
  -Wsequence-point
  -Wswitch
  -Wno-shift-count-overflow
  -Wshift-negative-value
  -Wundef
  -Wwrite-strings
  -Wsign-compare
  -Wsign-conversion
  -Wformat-signedness
  -Wvariadic-macros
  -Wexpansion-to-defined)
# Base flags for C
add_compile_options(-Wdouble-promotion -Wvla -Wstrict-prototypes
                    -Wbad-function-cast -Wmissing-prototypes -Wnested-externs)
# Specific compiler flags
if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
  add_compile_options(-Wlogical-op -Wshift-overflow=2 -Wmultistatement-macros)
elseif(CMAKE_C_COMPILER_ID STREQUAL "Clang")
  add_compile_options(-Wshift-overflow)
endif()

# Linker flags
if(CMAKE_BUILD_TYPE STREQUAL "Release")
  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s")
endif()

# Debug flags
set(CMAKE_C_FLAGS_DEBUG "-O0 -g3 -fstack-usage")
# Release flags
set(CMAKE_C_FLAGS_RELEASE "-O3 -DNDEBUG")

# Sanitizers
if(USE_SANITIZERS STREQUAL "ON")
  add_compile_options(-fsanitize=address,undefined)
  set(CMAKE_EXE_LINKER_FLAGS
      "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address,undefined")
endif()

# Test build
if(TEST_BUILD STREQUAL "ON")
  add_compile_options(
    -DI8080EMU_USE_MAX_MEMORY=ON,
    -DI8080EMU_ROM_WRITABLE=ON,
    -DI8080EMU_RUN_TESTS=ON)
endif()

# Directories
set(SRCDIR ${CMAKE_SOURCE_DIR}/src)
set(BINDIR ${CMAKE_BINARY_DIR})

# Main executable
file(GLOB_RECURSE SRC_FILES ${SRCDIR}/*.c)
add_executable(${PROJECT_NAME} ${SRC_FILES})
set_target_properties(${PROJECT_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY
                                                 ${BINDIR})

# Config file
configure_file(config.h.in config.h)
target_include_directories(${PROJECT_NAME} PRIVATE ${CMAKE_BINARY_DIR})

# Installation
install(TARGETS ${PROJECT_NAME} DESTINATION ${CMAKE_INSTALL_PREFIX})