Failed to build for 64bit target

[TerryGuo]

The 32bit build is successful. However after changing cmake variable BUILD_AS_64BIT_SUPPORT from "NO" to "YES" to enable 64bit build, the make will fail with below message:

[ 24%] Building C object CMakeFiles/vmlib.dir/home/terry/wasm/wasm-micro-runtime/core/iwasm/lib/native/libc/libc_wrapper.c.o
/home/terry/wasm/wasm-micro-runtime/core/iwasm/lib/native/libc/libc_wrapper.c:329:23: error: ‘get_va_list’ declared as function returning an array
 static inline va_list get_va_list(uint32 *args)
                       ^~~~~~~~~~~
/home/terry/wasm/wasm-micro-runtime/core/iwasm/lib/native/libc/libc_wrapper.c: In function ‘get_va_list’:
/home/terry/wasm/wasm-micro-runtime/core/iwasm/lib/native/libc/libc_wrapper.c:336:8: warning: returning ‘__va_list_tag *’ from a function with return type ‘int’ makes integer from pointer without a cast [-Wint-conversion]
 return u.v;
        ^
/home/terry/wasm/wasm-micro-runtime/core/iwasm/lib/native/libc/libc_wrapper.c:336:8: warning: function returns address of local variable [-Wreturn-local-addr]
/home/terry/wasm/wasm-micro-runtime/core/iwasm/lib/native/libc/libc_wrapper.c: In function ‘parse_printf_args’:
/home/terry/wasm/wasm-micro-runtime/core/iwasm/lib/native/libc/libc_wrapper.c:356:12: error: assignment to expression with array type
 *p_va_args = u.v;
            ^
make[2]: *** [CMakeFiles/vmlib.dir/build.make:219: CMakeFiles/vmlib.dir/home/terry/wasm/wasm-micro-runtime/core/iwasm/lib/native/libc/libc_wrapper.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:147: CMakeFiles/vmlib.dir/all] Error 2
make: *** [Makefile:130: all] Error 2

I am working on Ubuntu with GCC 8.3.

[wenyongh]

Thanks a lot, TerryGuo! Now the 64bit build error is fixed, could you please try again? Compiling wamr in 64bit is an experiment feature, please help notify us if there are issues found.

[TerryGuo]

Confimed. I can now build for 64bit target.