[AMD Official Use Only - AMD Internal Distribution Only]
Hello Maintainers,
we are trying to build TF‑A BL31 for the ZynqMP (Cortex‑A53) platform with Arm Compiler 6 (armclang) and ENABLE_LTO=1, and I’m running into several toolchain‑related build and link issues.
Setup :
Platform: ZynqMP Toolchains: Arm Compiler for Embedded 6.16.2 (armclang) Xilinx AArch64 GNU tools from Vitis 2025.2 (aarch64-xilinx-elf-*) LTO is enabled in plat/xilinx/zynqmp/platform.mk via ENABLE_LTO := 1.
Issues observed :
With CC=armclang and AArch64 linker (GCC), the build fails with:
armclang: error: unknown argument: '-flto-partition=one' This flag appears when ENABLE_LTO=1 and the linker is detected as gnu-gcc.
If I keep CC=armclang and ENABLE_LTO=1 but change the linker, I get linker‑specific errors With the Arm linker (LD=armlink or LD=armclang, which invokes armlink under the hood):
Fatal error: L3900U: Unrecognized option '-z'. This is due to GNU‑style -z options (and similar flags) being passed to armlink.
As -z options is specific to GNU linker, a armlink style flag would address the unrecognised option but we are observing dependency on scatter files. Fatal error: L6031U: Could not open scatter description file plat/xilinx/zynqmp//scat/bl31.scat: No such file or directory
Could you please help us with pointers to address the linker issues .
With regards , Venkata Sai .T .
Hello Venkata,
Here's the fix for CC=armclang: https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/47881. It was a type with the LTO everywhere patches.
As for LD=armlink, It's not as surface level so I'll look into it and get back to you.
Thanks, Boyan ________________________________ From: Taticharla, Venkata Sai via TF-A tf-a@lists.trustedfirmware.org Sent: 30 January 2026 11:03 AM To: tf-a@lists.trustedfirmware.org tf-a@lists.trustedfirmware.org Cc: Belsare, Akshay akshay.belsare@amd.com; Bollapalli, Maheedhar Sai MaheedharSai.Bollapalli@amd.com; Gudipalli, Sugadeesh sugadeesh.gudipalli@amd.com Subject: [TF-A] Unable to build the ZynqMP platform with armclang when ENABLE_LTO=1.
[AMD Official Use Only - AMD Internal Distribution Only]
Hello Maintainers,
we are trying to build TF‑A BL31 for the ZynqMP (Cortex‑A53) platform with Arm Compiler 6 (armclang) and ENABLE_LTO=1, and I’m running into several toolchain‑related build and link issues.
Setup :
Platform: ZynqMP Toolchains: Arm Compiler for Embedded 6.16.2 (armclang) Xilinx AArch64 GNU tools from Vitis 2025.2 (aarch64-xilinx-elf-*) LTO is enabled in plat/xilinx/zynqmp/platform.mk via ENABLE_LTO := 1.
Issues observed :
With CC=armclang and AArch64 linker (GCC), the build fails with:
armclang: error: unknown argument: '-flto-partition=one' This flag appears when ENABLE_LTO=1 and the linker is detected as gnu-gcc.
If I keep CC=armclang and ENABLE_LTO=1 but change the linker, I get linker‑specific errors With the Arm linker (LD=armlink or LD=armclang, which invokes armlink under the hood):
Fatal error: L3900U: Unrecognized option '-z'. This is due to GNU‑style -z options (and similar flags) being passed to armlink.
As -z options is specific to GNU linker, a armlink style flag would address the unrecognised option but we are observing dependency on scatter files. Fatal error: L6031U: Could not open scatter description file plat/xilinx/zynqmp//scat/bl31.scat: No such file or directory
Could you please help us with pointers to address the linker issues .
With regards , Venkata Sai .T . -- TF-A mailing list -- tf-a@lists.trustedfirmware.org To unsubscribe send an email to tf-a-leave@lists.trustedfirmware.org
Hi again,
The LD=armlink build is broken for all platforms and not really being looked at by anyone upstream.
Thanks, Boyan ________________________________ From: Boyan Karatotev via TF-A tf-a@lists.trustedfirmware.org Sent: 02 February 2026 9:32 AM To: tf-a@lists.trustedfirmware.org tf-a@lists.trustedfirmware.org; Taticharla, Venkata Sai VenkataSai.Taticharla@amd.com Cc: Belsare, Akshay akshay.belsare@amd.com; Bollapalli, Maheedhar Sai MaheedharSai.Bollapalli@amd.com; Gudipalli, Sugadeesh sugadeesh.gudipalli@amd.com Subject: [TF-A] Re: Unable to build the ZynqMP platform with armclang when ENABLE_LTO=1.
Hello Venkata,
Here's the fix for CC=armclang: https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/47881. It was a type with the LTO everywhere patches.
As for LD=armlink, It's not as surface level so I'll look into it and get back to you.
Thanks, Boyan ________________________________ From: Taticharla, Venkata Sai via TF-A tf-a@lists.trustedfirmware.org Sent: 30 January 2026 11:03 AM To: tf-a@lists.trustedfirmware.org tf-a@lists.trustedfirmware.org Cc: Belsare, Akshay akshay.belsare@amd.com; Bollapalli, Maheedhar Sai MaheedharSai.Bollapalli@amd.com; Gudipalli, Sugadeesh sugadeesh.gudipalli@amd.com Subject: [TF-A] Unable to build the ZynqMP platform with armclang when ENABLE_LTO=1.
[AMD Official Use Only - AMD Internal Distribution Only]
Hello Maintainers,
we are trying to build TF‑A BL31 for the ZynqMP (Cortex‑A53) platform with Arm Compiler 6 (armclang) and ENABLE_LTO=1, and I’m running into several toolchain‑related build and link issues.
Setup :
Platform: ZynqMP Toolchains: Arm Compiler for Embedded 6.16.2 (armclang) Xilinx AArch64 GNU tools from Vitis 2025.2 (aarch64-xilinx-elf-*) LTO is enabled in plat/xilinx/zynqmp/platform.mk via ENABLE_LTO := 1.
Issues observed :
With CC=armclang and AArch64 linker (GCC), the build fails with:
armclang: error: unknown argument: '-flto-partition=one' This flag appears when ENABLE_LTO=1 and the linker is detected as gnu-gcc.
If I keep CC=armclang and ENABLE_LTO=1 but change the linker, I get linker‑specific errors With the Arm linker (LD=armlink or LD=armclang, which invokes armlink under the hood):
Fatal error: L3900U: Unrecognized option '-z'. This is due to GNU‑style -z options (and similar flags) being passed to armlink.
As -z options is specific to GNU linker, a armlink style flag would address the unrecognised option but we are observing dependency on scatter files. Fatal error: L6031U: Could not open scatter description file plat/xilinx/zynqmp//scat/bl31.scat: No such file or directory
Could you please help us with pointers to address the linker issues .
With regards , Venkata Sai .T . -- TF-A mailing list -- tf-a@lists.trustedfirmware.org To unsubscribe send an email to tf-a-leave@lists.trustedfirmware.org
tf-a@lists.trustedfirmware.org
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Boyan Karatotev -
Taticharla, Venkata Sai