On 09.02.21 12:31, AKASHI Takahiro wrote:
On Tue, Feb 09, 2021 at 07:40:23AM +0100, Heinrich Schuchardt wrote:
Am 9. Februar 2021 06:30:31 MEZ schrieb AKASHI Takahiro takahiro.akashi@linaro.org:
On Mon, Feb 08, 2021 at 09:29:43PM -0700, Simon Glass wrote:
Hi Heinrich,
On Mon, 8 Feb 2021 at 15:06, Heinrich Schuchardt xypron.glpk@gmx.de
wrote:
UEFI test files like helloworld.efi require an architecture
specific
PE-COFF header.
architecture-specific
For non-sandbox the PE-COFF header is chosen by the target
architecture.
For the sandbox we use the host architecture. This is not helpful
for cross
compiling. Allow specifying the target architecture of the sandbox
via
environment variable MK_ARCH, e.g.
What exactly is the target arch? Is the the one that sandbox is running on, or something else?
make sandbox_defconfig NO_SDL=1 CROSS_COMPILE=aarch64-linux-gnu- NO_SDL=1 MK_ARCH=aarch64 makeSigned-off-by: Heinrich Schuchardt xypron.glpk@gmx.de
Makefile | 2 +- doc/arch/sandbox.rst | 14 ++++++++++++++ 2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile index 23dd11f723..286e5148ae 100644 --- a/Makefile +++ b/Makefile @@ -19,7 +19,7 @@ MAKEFLAGS += -rR --include-dir=$(CURDIR)
# Determine host architecture include include/host_arch.h -MK_ARCH="${shell uname -m}" +MK_ARCH?="${shell uname -m}" unexport HOST_ARCH ifeq ("x86_64", $(MK_ARCH)) export HOST_ARCH=$(HOST_ARCH_X86_64) diff --git a/doc/arch/sandbox.rst b/doc/arch/sandbox.rst index 60ee1e0741..0dd9edc8cb 100644 --- a/doc/arch/sandbox.rst +++ b/doc/arch/sandbox.rst @@ -33,6 +33,20 @@ integers can only be built on 64-bit hosts.
Note that standalone/API support is not available at present.
+Cross compiling +---------------
+When cross compiling the U-Boot sandbox with CONFIG_EFI_LOADER=y
the target
+architecture must be specified using the MK_ARCH environment
variable using one
+of the values aarch64, armv7l, i386, riscv32, riscv64, x86_64,
e.g.
OK, but what is the target architecture? I'm just not sure from your comments what this actually means.
I'm not quite sure if it is very useful to be able to cross-compile the sandbox application. But any way, it is not very convenient
Building the sandbox on ARMv7 is broken due to patch introduced in 2020. We get loads of warnings when building for 32bit.
Are you using "cross-compiling" sandbox on armv7 machine? For what target architecture?
Compiling sandbox_defconfig without cross-compiling fails on ARMv7.
Best regards
Heinrich
We should integrate building the sandbox for different architectures into Gitlab CI.
to always enforce users to explicitly specify "target" architecture. How about trying the following first? $(CC) -v | grep "Target: " | sed -e 's/-*$//'
It will give us a hint about the architecture. ("--print-multiarch" shows a similar triple, but this option won't work for some pre-built gcc, like aarch64 gcc from Arm.)
Did you check clang?
I don't know, but we must specify "--target" option explicitly in clang case, and according to U-Boot's Makefile, it will be uniquely determined from "CROSS_COMPILE".
-Takahiro Akashi
Is the output format specified? Will this be stable for compiler versions to come? Given the --print-multiarch failure probably not.
When compiling Linux you also have to supply CROSS_COMPILER and ARCH.
For me it is anyway a Gitlab CI thing. Nothing a user would typically use.
Best regards
Heinrich
Does MK mean make?
I prefer another name for clarity.
-Takahiro Akashi
+.. code-block:: bash
- NO_SDL=1 make sandbox_defconfig
- CROSS_COMPILE=aarch64-linux-gnu- MK_ARCH=aarch64 NO_SDL=1 make
+NO_SDL=1 was chosen in the example to remove the dependency on the
SDL library.
+The graphical console will not be available.
Prerequisites
-- 2.30.0
Regards, Simon