first build attempt

CMakeLists.txt

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+# MIT License
+# Author: Mark Allyn
+#
+# CMakeLists.txt — Museum Vintage Radar Exhibit
+#
+# Build:
+#   cd build && cmake .. && make -j$(nproc)
+#
+# Run (from project root):
+#   ./build/radar
+
+cmake_minimum_required(VERSION 3.16)
+project(radar LANGUAGES C CXX)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+# ----------------------------------------------------------------
+# Find packages
+# ----------------------------------------------------------------
+find_package(OpenGL REQUIRED)
+find_package(Freetype REQUIRED)
+find_package(Threads REQUIRED)
+
+# GLFW — prefer system package; fall back to find_library
+find_package(PkgConfig QUIET)
+if(PkgConfig_FOUND)
+    pkg_check_modules(GLFW glfw3)
+endif()
+if(NOT GLFW_FOUND)
+    find_library(GLFW_LIBRARIES NAMES glfw glfw3 REQUIRED)
+    find_path(GLFW_INCLUDE_DIRS GLFW/glfw3.h REQUIRED)
+endif()
+
+# ----------------------------------------------------------------
+# GLAD (compiled directly from source)
+# ----------------------------------------------------------------
+set(GLAD_SRC  ${CMAKE_SOURCE_DIR}/glad/src/glad.c)
+set(GLAD_INC  ${CMAKE_SOURCE_DIR}/include)
+
+# ----------------------------------------------------------------
+# Source files — main radar binary
+# ----------------------------------------------------------------
+set(SOURCES
+    src/main.cpp
+    src/shared_render_state.cpp
+    src/target_buffer.cpp
+    src/phosphor.cpp
+    src/graticule.cpp
+    src/left_panel.cpp
+    src/scope.cpp
+    src/scope_manager.cpp
+    src/scope_intro.cpp
+    src/scope_ppi.cpp
+    src/scope_marine_ppi.cpp
+    src/simulator.cpp
+    src/traffic_cop.cpp
+    src/knob_panel.cpp
+    src/rpi_receiver.cpp
+    ${GLAD_SRC}
+)
+
+add_executable(radar ${SOURCES})
+
+target_include_directories(radar PRIVATE
+    src/
+    ${GLAD_INC}
+    ${FREETYPE_INCLUDE_DIRS}
+    ${GLFW_INCLUDE_DIRS}
+)
+
+target_link_libraries(radar PRIVATE
+    OpenGL::GL
+    Freetype::Freetype
+    Threads::Threads
+    ${GLFW_LIBRARIES}
+)
+
+# Compiler warnings
+target_compile_options(radar PRIVATE
+    -Wall -Wextra -Wpedantic
+    -Wno-unused-parameter
+)
+
+# ----------------------------------------------------------------
+# terrain_preprocess — offline tool, links GDAL, NOT part of radar
+# Uncomment and install libgdal-dev to build this target.
+# ----------------------------------------------------------------
+# find_package(GDAL)
+# if(GDAL_FOUND)
+#     add_executable(terrain_preprocess src/terrain_preprocess.cpp ${GLAD_SRC})
+#     target_include_directories(terrain_preprocess PRIVATE src/ ${GLAD_INC} ${GDAL_INCLUDE_DIRS})
+#     target_link_libraries(terrain_preprocess PRIVATE ${GDAL_LIBRARIES} Threads::Threads)
+# endif()
+
+# ----------------------------------------------------------------
+# Copy shaders and data to build directory for in-build-dir running
+# ----------------------------------------------------------------
+add_custom_target(copy_assets ALL
+    COMMAND ${CMAKE_COMMAND} -E copy_directory
+        ${CMAKE_SOURCE_DIR}/shaders ${CMAKE_BINARY_DIR}/shaders
+    COMMAND ${CMAKE_COMMAND} -E copy_directory
+        ${CMAKE_SOURCE_DIR}/data ${CMAKE_BINARY_DIR}/data
+    COMMENT "Copying shaders and data to build directory"
+)
+add_dependencies(radar copy_assets)