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Improved CMakelists and main.cpp #2

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f973934
Refactor CMakeLists.txt for project settings and libraries
thenitinshukla Aug 18, 2026
41fe81a
Refactor main function and improve organization
thenitinshukla Aug 18, 2026
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87 changes: 70 additions & 17 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
@@ -1,36 +1,89 @@
cmake_minimum_required(VERSION 3.28)

project(CMakeSFMLProject LANGUAGES CXX)

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/bin)
# ============================================================
# Project settings
# ============================================================

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY
${CMAKE_SOURCE_DIR}/bin
)

# ============================================================
# OpenMP
# ============================================================

find_package(OpenMP REQUIRED)

add_executable(sim src/main.cpp)
# ============================================================
# SFML
# ============================================================

# 1. Fetch SFML normally (Without OpenMP polluting it)
include(FetchContent)
FetchContent_Declare(SFML

FetchContent_Declare(
SFML
GIT_REPOSITORY https://github.com/SFML/SFML.git
GIT_TAG 3.1.0
GIT_SHALLOW ON
EXCLUDE_FROM_ALL
SYSTEM
)

FetchContent_MakeAvailable(SFML)

# 2. Link SFML to your executable
target_compile_features(sim PRIVATE cxx_std_20)
target_link_libraries(sim PRIVATE sfml-graphics sfml-window sfml-system)
# ============================================================
# Executable
# ============================================================

add_executable(
sim
src/main.cpp
)

# ============================================================
# Compiler features
# ============================================================

target_compile_features(
sim
PRIVATE
cxx_std_20
)

# 3. Target-Specific OpenMP for Mac (Applies ONLY to 'sim')
if(APPLE)
target_include_directories(sim PRIVATE /opt/homebrew/opt/libomp/include)
target_link_directories(sim PRIVATE /opt/homebrew/opt/libomp/lib)
target_compile_options(sim PRIVATE -Xpreprocessor -fopenmp)
target_link_options(sim PRIVATE -Xpreprocessor -fopenmp) # Ensure linker knows about threads
target_link_libraries(sim PRIVATE omp)
endif()
# ============================================================
# Compile options
# ============================================================

target_compile_options(
sim
PRIVATE
$<$<CONFIG:Release>:-O3>
)

set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT main)
# ============================================================
# Libraries
# ============================================================

set(CMAKE_CXX_FLAGS_RELEASE "-O3 -Xpreprocessor -fopenmp")
target_link_libraries(
sim
PRIVATE
sfml-graphics
sfml-window
sfml-system
OpenMP::OpenMP_CXX
)

# ============================================================
# IDE settings
# ============================================================

set_property(
DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
PROPERTY VS_STARTUP_PROJECT sim
)
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