Update uvwasi CMakeLists.txt

FetchContent_Populate is deprecated, updated the cmake file to use
FetchContent_MakeAvailable.
Also updated minimum cmake version for FetchContent_MakeAvailable
compatibility.
Also fix a bug where the flag '-m32' was not added when building in 32
bit mode.

Signed-off-by: Ádám László Kulcsár <[email protected]>

third_party/uvwasi/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.14)
 project (
     uvwasi
     DESCRIPTION "WASI syscall API built atop libuv"
@@ -29,7 +29,7 @@ if(CMAKE_C_COMPILER_ID MATCHES "AppleClang|Clang|GNU")
 
   if (UVWASI_BUILD_X86)
     # set x86 build flag
-    add_compile_options( -m32 )
+    set (CMAKE_C_FLAGS ${CMAKE_C_FLAGS} -m32)
   endif()
 endif()
 
@@ -53,8 +53,8 @@ endif()
           GIT_TAG ${LIBUV_VERSION})
 
   FetchContent_GetProperties(libuv)
+  FetchContent_MakeAvailable(libuv)
   if(NOT libuv_POPULATED)
-      FetchContent_Populate(libuv)
       include_directories("${libuv_SOURCE_DIR}/include")
       add_subdirectory(${libuv_SOURCE_DIR} ${libuv_BINARY_DIR} EXCLUDE_FROM_ALL)
   endif()