cmake : add option to enable/disable install of imgui headers

Author: ggerganov

CMakeLists.txt

@@ -41,6 +41,8 @@ option(IMTUI_SUPPORT_CURL            "imtui: support for libcurl" ${IMTUI_SUPPOR
 
 option(IMTUI_BUILD_EXAMPLES          "imtui: build examples" ${IMTUI_STANDALONE})
 
+option(IMTUI_INSTALL_IMGUI_HEADERS   "imtui: install Dear ImGui's header files" ${IMTUI_STANDALONE})
+
 # sanitizers
 
 if (IMTUI_SANITIZE_THREAD)

third-party/CMakeLists.txt

@@ -38,7 +38,7 @@ if (MINGW)
     set_target_properties(imgui-for-imtui PROPERTIES COMPILE_FLAGS -fno-threadsafe-statics)
 endif()
 
-if (IMTUI_STANDALONE AND NOT EMSCRIPTEN)
+if (IMTUI_INSTALL_IMGUI_HEADERS AND NOT EMSCRIPTEN)
     install(
         FILES
         ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui/imgui.h