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cmake : avoid -march=native when reproducible build is wanted (#11366)

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See https://reproducible-builds.org/ for why this is good
and https://reproducible-builds.org/specs/source-date-epoch/
for the definition of this variable.

Without this patch, compiling on different machines produced different binaries, which made verification of results difficult.

Fixes: #11317

This patch was done while working on reproducible builds for openSUSE.
This commit is contained in:
Bernhard M. Wiedemann 2025-01-24 12:21:35 +01:00 • committed by GitHub
parent 01f37edf1a
commit 1af6945eb0
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1 changed files with 2 additions and 1 deletions
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3
ggml/CMakeLists.txt
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@ -58,7 +58,8 @@ else()
set(GGML_BLAS_VENDOR_DEFAULT "Generic")
endif()
if (CMAKE_CROSSCOMPILING)
if (CMAKE_CROSSCOMPILING OR DEFINED ENV{SOURCE_DATE_EPOCH})
message(STATUS "Setting GGML_NATIVE_DEFAULT to OFF")
set(GGML_NATIVE_DEFAULT OFF)
else()
set(GGML_NATIVE_DEFAULT ON)