[Buildroot] [git commit] package/libv4l: backport upstream patch to fix time_t issue

[Julien Olivain]

commit: https://git.buildroot.net/buildroot/commit/?id=bdb5809adfcff3a47d7117b5c856a400c7432273
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master

libv4l has some really special code that is built explicitly with
_FILE_OFFSET_BITS=32, which doesn't work with _TIME_BITS=64, causing
build failures when BR2_TIME_BITS_64=y. This build issue has been
fixed upstream. While how the upstream patch exactly works is unclear,
it's the patch that upstream has decided to implement to resolve the
build issue, so we simply backport it.

The issue exists since at least upstream commit
99f245f5e2826c7ae3ac8de530bc2fbd906eb62b, which was merged in
v4l-utils 1.26.0.

Fixes:

  https://autobuild.buildroot.org/results/616608ef2a44efff67fa21b3263b341da82744c4/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
[Julien: add upstream commit url in patch]
Signed-off-by: Julien Olivain <ju.o at free.fr>
---
 ...1-meson.build-fix-arm-_TIME_BITS-64-error.patch | 37 ++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/package/libv4l/0001-meson.build-fix-arm-_TIME_BITS-64-error.patch b/package/libv4l/0001-meson.build-fix-arm-_TIME_BITS-64-error.patch
new file mode 100644
index 0000000000..43fe9b2721
--- /dev/null
+++ b/package/libv4l/0001-meson.build-fix-arm-_TIME_BITS-64-error.patch
@@ -0,0 +1,37 @@
+From 6faf5e963eadeab8b7d47d5b3c14f06e0ae1da01 Mon Sep 17 00:00:00 2001
+From: Hans Verkuil <hverkuil at xs4all.nl>
+Date: Sat, 12 Apr 2025 12:30:13 +0200
+Subject: [PATCH] meson.build: fix arm _TIME_BITS=64 error
+
+Undefine _TIME_BITS to avoid this error on 32-bit arm:
+
+/usr/include/features-time64.h:26:5: error: #error "_TIME_BITS=64 is allowed only with _FILE_OFFSET_BITS=64"
+
+Signed-off-by: Hans Verkuil <hverkuil at xs4all.nl>
+Upstream: https://git.linuxtv.org/v4l-utils.git/commit/?id=d517cfdcdc16533ab7e06e97c07ca089cf261aef
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
+---
+ meson.build | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/meson.build b/meson.build
+index 269a9da7..31927cda 100644
+--- a/meson.build
++++ b/meson.build
+@@ -53,8 +53,12 @@ v4l2_wrapper_args = [
+     # As the library needs to provide both 32-bit and 64-bit versions
+     # of file operations, disable transparent large file support (fixes
+     # 'Error: symbol `open64/mmap64' is already defined' compile failure
+-    # otherwise)
++    # otherwise).
++    #
++    # Also disable _TIME_BITS=64 since this is allowed only with
++    # _FILE_OFFSET_BITS=64, which is now 32.
+     '-U_FILE_OFFSET_BITS',
++    '-U_TIME_BITS',
+     '-D_FILE_OFFSET_BITS=32',
+     '-D_LARGEFILE64_SOURCE',
+ ]
+-- 
+2.49.0
+