Add Zephyr to CMake build system

CMakeLists.txt

@@ -13,7 +13,7 @@ set(CMAKE_DISABLE_SOURCE_CHANGES ON)
 set(CMAKE_DISABLE_IN_SOURCE_BUILD ON)
 
 # Make sure we can import out CMake functions
-list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
 
 # Load in the needed CMake modules
 include(CheckIncludeFiles)
@@ -38,8 +38,10 @@ determine_target_architecture(CIVETWEB_ARCHITECTURE)
 include(GNUInstallDirs)
 
 # Detect the platform reliably
-if(NOT MACOSX AND ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-   SET(DARWIN YES)
+if(${KERNEL_NAME} MATCHES "zephyr")
+    SET(ZEPHYR YES)
+elseif(NOT MACOSX AND ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+    SET(DARWIN YES)
 elseif(NOT BSD AND ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
     SET(FREEBSD YES)
 elseif(NOT LINUX AND ${CMAKE_SYSTEM_NAME} MATCHES "Linux")
@@ -294,27 +296,6 @@ else()
   add_c_compiler_flag(-std=${CIVETWEB_C_STANDARD})
 endif()
 
-#Warnings: enable everything
-add_c_compiler_flag(-Wall)
-add_c_compiler_flag(-Wextra)
-add_c_compiler_flag(-Wshadow)
-add_c_compiler_flag(-Wconversion)
-add_c_compiler_flag(-Wmissing-prototypes)
-add_c_compiler_flag(-Weverything)
-add_c_compiler_flag(-Wparentheses)
-add_c_compiler_flag(/W4) # VisualStudio highest warning level
-
-#Warnings: Disable some warnings
-add_c_compiler_flag(-Wno-padded) # padding in structures by compiler
-add_c_compiler_flag(-Wno-unused-macros) # so what?
-Check_C_Compiler_Flag( HAVE_NO_RESERVED_ID_MACROS -Wno-reserved-id-macros)
-if (HAVE_NO_RESERVED_ID_MACROS)
-add_c_compiler_flag(-Wno-reserved-id-macros) # for system headers
-endif (HAVE_NO_RESERVED_ID_MACROS)
-add_c_compiler_flag(-Wno-format-nonliteral) # printf(myFormatStringVar, ...)
-add_c_compiler_flag(-Wno-cast-qual) # const cast
-add_c_compiler_flag(/Wd4820) # padding
-
 if (MINGW)
   add_c_compiler_flag(-Wno-format)
 endif()
@@ -322,9 +303,6 @@ if (NOT CIVETWEB_ALLOW_WARNINGS)
   add_c_compiler_flag(-Werror)
   add_c_compiler_flag(/WX)
 endif()
-add_c_compiler_flag(-pedantic-errors)
-add_c_compiler_flag(-fvisibility=hidden)
-add_c_compiler_flag(-fstack-protector-strong RELEASE)
 if (${CIVETWEB_ENABLE_LTO})
   add_c_compiler_flag(-flto RELEASE)
 endif()
@@ -335,7 +313,6 @@ if (HAVE_C_FLAG_FSANITIZE_ADDRESS)
   add_c_compiler_flag(-static-asan DEBUG)
 endif()
 endif()
-add_c_compiler_flag(-fstack-protector-all DEBUG)
 if (MINGW)
   add_c_compiler_flag(-mwindows)
 endif()
@@ -417,6 +394,79 @@ if (CIVETWEB_ENABLE_CXX)
   add_cxx_compiler_flag(--coverage COVERAGE)
 endif()
 
+if (NOT ZEPHYR)
+  #Warnings: enable everything
+  add_c_compiler_flag(-Wall)
+  add_c_compiler_flag(-Wextra)
+  add_c_compiler_flag(-Wshadow)
+  add_c_compiler_flag(-Wconversion)
+  add_c_compiler_flag(-Wmissing-prototypes)
+  add_c_compiler_flag(-Weverything)
+  add_c_compiler_flag(-Wparentheses)
+  add_c_compiler_flag(/W4) # VisualStudio highest warning level
+
+  #Warnings: Disable some warnings
+  add_c_compiler_flag(-Wno-padded) # padding in structures by compiler
+  add_c_compiler_flag(-Wno-unused-macros) # so what?
+  Check_C_Compiler_Flag( HAVE_NO_RESERVED_ID_MACROS -Wno-reserved-id-macros)
+  if (HAVE_NO_RESERVED_ID_MACROS)
+  add_c_compiler_flag(-Wno-reserved-id-macros) # for system headers
+  endif (HAVE_NO_RESERVED_ID_MACROS)
+  add_c_compiler_flag(-Wno-format-nonliteral) # printf(myFormatStringVar, ...)
+  add_c_compiler_flag(-Wno-cast-qual) # const cast
+  add_c_compiler_flag(/Wd4820) # padding
+
+  add_c_compiler_flag(-pedantic-errors)
+  add_c_compiler_flag(-fvisibility=hidden)
+  add_c_compiler_flag(-fstack-protector-strong RELEASE)
+  add_c_compiler_flag(-fstack-protector-all DEBUG)
+else()
+  # This policy is needed to override options with variables
+  cmake_policy(SET CMP0077 NEW)
+
+  # Configure what you need/support in Zephyr
+  set(CIVETWEB_SERVE_NO_FILES ON)
+  set(CIVETWEB_SERVE_NO_FILESYSTEMS ON)
+  set(CIVETWEB_DISABLE_CGI ON)
+  set(CIVETWEB_DISABLE_CACHING ON)
+  set(CIVETWEB_ENABLE_SSL OFF)
+  set(CIVETWEB_ENABLE_SSL_DYNAMIC_LOADING OFF)
+
+  set(CIVETWEB_ENABLE_LUA OFF)
+  set(CIVETWEB_ENABLE_DUKTAPE OFF)
+  set(CIVETWEB_ENABLE_MEMORY_DEBUGGING OFF)
+  set(CIVETWEB_ENABLE_SERVER_EXECUTABLE OFF)
+  set(CIVETWEB_ENABLE_ASAN OFF)
+  set(CIVETWEB_INSTALL_EXECUTABLE OFF)
+
+  set(CIVETWEB_THREAD_STACK_SIZE 0)
+
+  set(BUILD_SHARED_LIBS OFF)
+
+  add_definitions(-DMG_EXTERNAL_FUNCTION_mg_cry_internal_impl)
+  add_definitions(-DMG_EXTERNAL_FUNCTION_log_access)
+
+  add_definitions(-DNO_ALTERNATIVE_QUEUE)
+  add_definitions(-DZEPHYR_VERSION=${KERNEL_VERSION_STRING})
+
+  zephyr_interface_library_named(CIVETWEB)
+
+  target_include_directories(CIVETWEB INTERFACE src)
+  target_include_directories(CIVETWEB INTERFACE include)
+  target_include_directories(CIVETWEB INTERFACE ${CMAKE_SOURCE_DIR}/src)
+
+  zephyr_include_directories(include)
+
+  zephyr_library()
+  zephyr_library_sources(
+    src/civetweb.c
+  )
+
+  zephyr_library_link_libraries(CIVETWEB)
+  target_link_libraries(CIVETWEB INTERFACE zephyr_interface)
+endif()
+
+
 # Set up the definitions
 if (${CMAKE_BUILD_TYPE} MATCHES "[Dd]ebug")
   add_definitions(-DDEBUG)
@@ -435,6 +485,9 @@ endif()
 if (CIVETWEB_SERVE_NO_FILES)
   add_definitions(-DNO_FILES)
 endif()
+if (CIVETWEB_SERVE_NO_FILESYSTEMS)
+  add_definitions(-DNO_FILESYSTEMS)
+endif()
 if (CIVETWEB_DISABLE_CGI)
   add_definitions(-DNO_CGI)
 endif()
@@ -476,6 +529,10 @@ add_c_compiler_flag(-m64)
 endif()
 # TODO: add support for -march
 
+if (ZEPHYR)
+  return()
+endif()
+
 # Build the targets
 add_subdirectory(src)