From fcc689e1887bcbeb9d1c4441266a63ea2114ae9f Mon Sep 17 00:00:00 2001 From: Connor Baker Date: Thu, 18 Sep 2025 13:15:43 -0700 Subject: [PATCH] cmake/OpenCVUtils.cmake: invalidate Nix store paths before including in version_string.inc Signed-off-by: Connor Baker --- cmake/OpenCVUtils.cmake | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/cmake/OpenCVUtils.cmake b/cmake/OpenCVUtils.cmake index 5886f4f3cb..9f3a3a74e9 100644 --- a/cmake/OpenCVUtils.cmake +++ b/cmake/OpenCVUtils.cmake @@ -956,6 +956,15 @@ function(ocv_output_status msg) message(WARNING "String to be inserted to version_string.inc has an unexpected line break: '${msg}'") string(REPLACE "\n" "\\n" msg "${msg}") endif() + # The hash portion of Nix store paths are 32 characters long. Replace them with an invalid hash to avoid bloating + # the runtime closure by includnig references to the compiler and other build tools. + # https://fzakaria.com/2025/03/28/what-s-in-a-nix-store-path + # NOTE: This assumes the name of the Nix store is always /nix/store. + # NOTE: The regex [a-z0-9] is larger than Nix's base32, but it simplifies things. + # NOTE: This assumes all Nix store paths have additional characters after the hash. + # NOTE: CMake doesn't support fixed-length matching. See: + # https://cmake.org/cmake/help/latest/command/string.html#regex-specification + string(REGEX REPLACE "/nix/store/[a-z0-9]+-" "/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-" msg "${msg}") set(OPENCV_BUILD_INFO_STR "${OPENCV_BUILD_INFO_STR}\"${msg}\\n\"\n" CACHE INTERNAL "") endfunction() -- 2.48.1