https://sources.debian.org/src/x265/2.9-3/debian/patches/0001-Fix-arm-flags.patch/

From: Sebastian Ramacher <sramacher@debian.org>
Date: Wed, 26 Apr 2017 22:05:06 +0200
Subject: Fix arm* flags

---
 source/CMakeLists.txt | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
index 33b6523..25aecbb 100644
--- a/source/CMakeLists.txt
+++ b/source/CMakeLists.txt
@@ -72,7 +72,7 @@ elseif(ARMMATCH GREATER "-1")
     endif()
     message(STATUS "Detected ARM target processor")
     set(ARM 1)
-    add_definitions(-DX265_ARCH_ARM=1 -DHAVE_ARMV6=1)
+    # add_definitions(-DX265_ARCH_ARM=1 -DHAVE_ARMV6=1)
 else()
     message(STATUS "CMAKE_SYSTEM_PROCESSOR value `${CMAKE_SYSTEM_PROCESSOR}` is unknown")
     message(STATUS "Please add this value near ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE}")
@@ -230,12 +230,8 @@ if(GCC)
     if(ARM AND CROSS_COMPILE_ARM)
         set(ARM_ARGS -march=armv6 -mfloat-abi=soft -mfpu=vfp -marm -fPIC)
     elseif(ARM)
-        find_package(Neon)
         if(CPU_HAS_NEON)
-            set(ARM_ARGS -mcpu=native -mfloat-abi=hard -mfpu=neon -marm -fPIC)
             add_definitions(-DHAVE_NEON)
-        else()
-            set(ARM_ARGS -mcpu=native -mfloat-abi=hard -mfpu=vfp -marm)
         endif()
     endif()
     add_definitions(${ARM_ARGS})
ef='/guix/commit/gnu/build/linux-initrd.scm?id=305e90161ad0b50f756123edac0b982ba77a154a'>commit</a><a href='/guix/diff/gnu/build/linux-initrd.scm?id=305e90161ad0b50f756123edac0b982ba77a154a'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/build/linux-initrd.scm'>
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<div class='path'>path: <a href='/guix/log/?id=305e90161ad0b50f756123edac0b982ba77a154a'>root</a>/<a href='/guix/log/gnu?id=305e90161ad0b50f756123edac0b982ba77a154a'>gnu</a>/<a href='/guix/log/gnu/build?id=305e90161ad0b50f756123edac0b982ba77a154a'>build</a>/<a href='/guix/log/gnu/build/linux-initrd.scm?id=305e90161ad0b50f756123edac0b982ba77a154a'>linux-initrd.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/build/linux-initrd.scm?id=305e90161ad0b50f756123edac0b982ba77a154a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-12-15 17:32:10 +0100'>2020-12-15</span></td><td><a href='/guix/commit/gnu/build/linux-initrd.scm?id=6a060ff27ff68384d7c90076baa36c349fff689d'>store-copy: 'populate-store' can optionally deduplicate files.</a><span class='msg-avail'>...<span class='msg-tooltip'>Until now deduplication was performed as an additional pass after
copying files, which involve re-traversing all the files that had just
been copied.

* guix/store/deduplication.scm (copy-file/deduplicate): New procedure.
* tests/store-deduplication.scm ("copy-file/deduplicate"): New test.
* guix/build/store-copy.scm (populate-store): Add #:deduplicate?
parameter and honor it.
* tests/gexp.scm ("gexp-&gt;derivation, store copy"): Pass #:deduplicate? #f
to 'populate-store'.
* gnu/build/image.scm (initialize-root-partition): Pass #:deduplicate?
to 'populate-store'.  Pass #:deduplicate? #f to 'register-closure'.
* gnu/build/vm.scm (root-partition-initializer): Likewise.
* gnu/build/install.scm (populate-single-profile-directory): Pass
 #:deduplicate? #f to 'populate-store'.
* gnu/build/linux-initrd.scm (build-initrd): Likewise.
* guix/scripts/pack.scm (self-contained-tarball)[import-module?]: New
procedure.
[build]: Pass it as an argument to 'source-module-closure'.
* guix/scripts/pack.scm (squashfs-image)[build]: Wrap in
'with-extensions'.
* gnu/system/linux-initrd.scm (expression-&gt;initrd)[import-module?]: New
procedure.
[builder]: Pass it to 'source-module-closure'.
* gnu/system/install.scm (cow-store-service-type)[import-module?]: New
procedure.  Pass it to 'source-module-closure'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-11-21 12:39:14 +0100'>2020-11-21</span></td><td><a href='/guix/commit/gnu/build/linux-initrd.scm?id=2200bb214690ebc78b9fa42887ac9dfb8035bd4f'>linux-initrd: Remove unnecessary timestamp reset phase.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/build/linux-initrd.scm (write-cpio-archive): Mention timestamps in
docstring.
(build-initrd): Remove unnecessary timestamp reset phase.
</span></span></td><td>Ludovic Courtès</td></tr>