Re: [edk2-devel] Building EDK2 code on arm64 (aarch64) - BaseTools fails

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 4/10/19 6:57 AM, Rebecca Cran via Groups.Io wrote:
> Is there any expectation that EDK2 will build on non-x86 systems?

I have no problem using Ubuntu Bionic on Aarch64 using the default GCC.

$ lsb_release -cd
Description:    Ubuntu 18.04.2 LTS
Codename:       bionic

$ uname -ms
Linux aarch64

$ gcc -v
gcc version 7.3.0 (Ubuntu/Linaro 7.3.0-27ubuntu1~18.04)

> I tried building BaseTools (from git master,
> ae2fb9ead47b5abaf2a4e815b5f57c8f4838b221) using GCC 8.2 on a SoftIron
> OverDrive 1000 (running FreeBSD) but there are lots of errors, such as:
> 
> 
> gcc  -c  -I .. -I ../Include/Common -I ../Include/ -I
> ../Include/IndustryStandard -I ../Common/ -I .. -I . -I ../Include/Arm/ 
> -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror
> -Wno-deprecated-declarations -Wno-stringop-truncation -Wno-restrict
> -Wno-unused-result -nostdlib -g -O2  BasePeCoff.c -o BasePeCoff.o
> BasePeCoff.c: In function 'PeCoffLoaderGetPeHeader':
> BasePeCoff.c:120:49: error: cast from pointer to integer of different
> size [-Werror=pointer-to-int-cast]
>    *PeHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)
> ((UINTN)ImageContext->Handle + ImageContext->PeCoffHeaderOffset);
>                                                  ^
> BasePeCoff.c:120:12: error: cast to pointer from integer of different
> size [-Werror=int-to-pointer-cast]
>    *PeHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)
> ((UINTN)ImageContext->Handle + ImageContext->PeCoffHeaderOffset);
>             ^
> BasePeCoff.c: In function 'PeCoffLoaderImageAddress':
> BasePeCoff.c:551:10: error: cast to pointer from integer of different
> size [-Werror=int-to-pointer-cast]
>    return (UINT8 *) ((UINTN) ImageContext->ImageAddress + Address);
>           ^

This doesn't look like an architecture problem. It seems your GCC
version isn't checked correctly by BaseTools. This warning is supposed
to be disabled, see:

StdLib/LibC/Stdio/Stdio.inf:  GCC:*_*_*_CC_FLAGS    = -fno-builtin
-Wno-pointer-to-int-cast -Wno-int-to-pointer-cast -Wno-format