On Mon, Dec 01, 2025 at 12:41:00PM -0600, Ryan Eatmon via 
lists.yoctoproject.org wrote:
> The coremark binary includes a copy of the compiler flags in the output
> which breaks the reproducible build tenet of Yocto.  This patch simply
> replaces COMPILER_FLAGS with "".

This is also needed on scarthgap, where it is a warning, not an error, but 
still.


> Signed-off-by: Ryan Eatmon <[email protected]>
> ---
>  ..._main-Remove-printing-compiler-flags.patch | 41 +++++++++++++++++++
>  .../coremark/coremark_git.bb                  |  5 ++-
>  2 files changed, 45 insertions(+), 1 deletion(-)
>  create mode 100644 
> meta-arago-test/recipes-benchmark/coremark/coremark/0001-core_main-Remove-printing-compiler-flags.patch
> 
> diff --git 
> a/meta-arago-test/recipes-benchmark/coremark/coremark/0001-core_main-Remove-printing-compiler-flags.patch
>  
> b/meta-arago-test/recipes-benchmark/coremark/coremark/0001-core_main-Remove-printing-compiler-flags.patch
> new file mode 100644
> index 00000000..ef7c78b2
> --- /dev/null
> +++ 
> b/meta-arago-test/recipes-benchmark/coremark/coremark/0001-core_main-Remove-printing-compiler-flags.patch
> @@ -0,0 +1,41 @@
> +From 0af4e2298ccacc8afc0294b7a731f0e866155427 Mon Sep 17 00:00:00 2001
> +From: Ryan Eatmon <[email protected]>
> +Date: Mon, 1 Dec 2025 12:21:23 -0600
> +Subject: [PATCH] core_main: Remove printing compiler flags
> +
> +Reproducible builds do not like including anything that references the
> +build environment on the host machine.  This would include printing out
> +the COMPILER_FLAGS macro.  Substitute it with "".
> +
> +Upstream-Status: Inappropriate [OE-Specific]
> +
> +Signed-off-by: Ryan Eatmon <[email protected]>
> +---
> + core_main.c | 4 ++--
> + 1 file changed, 2 insertions(+), 2 deletions(-)
> +
> +diff --git a/core_main.c b/core_main.c
> +index a4beeb6..f0ab87f 100644
> +--- a/core_main.c
> ++++ b/core_main.c
> +@@ -380,7 +380,7 @@ for (i = 0; i < MULTITHREAD; i++)
> +     ee_printf("Iterations       : %lu\n",
> +               (long unsigned)default_num_contexts * results[0].iterations);
> +     ee_printf("Compiler version : %s\n", COMPILER_VERSION);
> +-    ee_printf("Compiler flags   : %s\n", COMPILER_FLAGS);
> ++    ee_printf("Compiler flags   : %s\n", ""); //Reproducible build fix: 
> COMPILER_FLAGS);
> + #if (MULTITHREAD > 1)
> +     ee_printf("Parallel %s : %d\n", PARALLEL_METHOD, default_num_contexts);
> + #endif
> +@@ -410,7 +410,7 @@ for (i = 0; i < MULTITHREAD; i++)
> +                       default_num_contexts * results[0].iterations
> +                           / time_in_secs(total_time),
> +                       COMPILER_VERSION,
> +-                      COMPILER_FLAGS);
> ++                      ""); //Reproducible build fix: COMPILER_FLAGS);
> + #if defined(MEM_LOCATION) && !defined(MEM_LOCATION_UNSPEC)
> +             ee_printf(" / %s", MEM_LOCATION);
> + #else
> +-- 
> +2.43.0
> +
> diff --git a/meta-arago-test/recipes-benchmark/coremark/coremark_git.bb 
> b/meta-arago-test/recipes-benchmark/coremark/coremark_git.bb
> index 1e002c06..9d770c44 100644
> --- a/meta-arago-test/recipes-benchmark/coremark/coremark_git.bb
> +++ b/meta-arago-test/recipes-benchmark/coremark/coremark_git.bb
> @@ -3,7 +3,10 @@ SUMMARY = "The benchmark utility to measure the performance 
> of CPU"
>  LICENSE = "Coremark"
>  LIC_FILES_CHKSUM = "file://LICENSE.md;md5=0a18b17ae63deaa8a595035f668aebe1"
>  
> -SRC_URI = "git://github.com/eembc/coremark.git;branch=main;protocol=https"
> +SRC_URI = " \
> +    git://github.com/eembc/coremark.git;branch=main;protocol=https \
> +    file://0001-core_main-Remove-printing-compiler-flags.patch \
> +"
>  PV = "1.01+git"
>  SRCREV = "1f483d5b8316753a742cbf5590caf5bd0a4e4777"
>  
> -- 
> 2.43.0


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