Add project files.

libhmap/CMakeLists.txt

@@ -0,0 +1,27 @@
+find_package(Threads REQUIRED)
+
+add_library(hmap STATIC
+  src/bsp.cpp
+  src/capi.cpp
+  src/compile.cpp
+  src/entdefs.cpp
+  src/fbx.cpp
+  src/geometry.cpp
+  src/io.cpp
+  src/map.cpp
+  src/sample.cpp)
+add_library(hmap::hmap ALIAS hmap)
+
+target_include_directories(hmap PUBLIC
+  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  $<INSTALL_INTERFACE:include>)
+target_compile_features(hmap PUBLIC cxx_std_17)
+target_link_libraries(hmap PUBLIC Threads::Threads)
+if(MSVC)
+  target_compile_options(hmap PRIVATE /W3 /utf-8)
+else()
+  target_compile_options(hmap PRIVATE -Wall -Wextra)
+endif()
+
+install(TARGETS hmap EXPORT hmapTargets ARCHIVE DESTINATION lib)
+install(DIRECTORY include/ DESTINATION include)