Accepting request 1043745 from home:alarrosa:branches:graphics

I tested this in a Leap 15.4 system with kimageformats 5.100.0
and gwenview5 and it could open/save jxl files correctly.
The test was built in 
home:alarrosa:branches:openSUSE:Backports:SLE-15-SP4:kimageformats

With this, we can submit jxl support to Backports for SLE15-SP5/
Leap 15.5

- Add patch (applied reversed) to revert the requirement for an
  updated liblcms2 library when we have an older one. This allows
  libjxl to build in SLE15 SP4/SP5 (and Leap 15.4/15.5):
  * 0001-Remove-LCMS-mutex.patch

OBS-URL: https://build.opensuse.org/request/show/1043745
OBS-URL: https://build.opensuse.org/package/show/graphics/libjxl?expand=0&rev=11

0001-Remove-LCMS-mutex.patch

@@ -0,0 +1,125 @@
+From 057cd06c19875bcf8b5d34d41d92a8abdb856b7c Mon Sep 17 00:00:00 2001
+From: Kleis Auke Wolthuizen <github@kleisauke.nl>
+Date: Fri, 11 Mar 2022 21:11:24 +0100
+Subject: [PATCH] Remove LCMS mutex (#112)
+
+* Remove LCMS mutex
+
+Requires mm2/Little-CMS@a35bacd, which is released in LCMS v2.11.
+
+* Use a threadsafe alternative of gmtime in LCMS
+
+Requires mm2/Little-CMS@68ee2ff, which is released in LCMS v2.13.
+
+LCMS submodule was updated to version 2.13.1 instead.
+---
+ lib/jxl/enc_color_management.cc | 15 ---------------
+ third_party/CMakeLists.txt      |  2 +-
+ third_party/lcms                |  2 +-
+ third_party/lcms2.cmake         | 14 ++++++++++++++
+ 4 files changed, 16 insertions(+), 17 deletions(-)
+
+diff --git a/lib/jxl/enc_color_management.cc b/lib/jxl/enc_color_management.cc
+index 419a2b6b68..0a7e21f3ba 100644
+--- a/lib/jxl/enc_color_management.cc
++++ b/lib/jxl/enc_color_management.cc
+@@ -18,7 +18,6 @@
+ #include <array>
+ #include <atomic>
+ #include <memory>
+-#include <mutex>
+ #include <string>
+ #include <utility>
+ 
+@@ -307,14 +306,6 @@ int DoColorSpaceTransform(void* t, size_t thread, const float* buf_src,
+ // Define to 1 on OS X as a workaround for older LCMS lacking MD5.
+ #define JXL_CMS_OLD_VERSION 0
+ 
+-// cms functions (even *THR) are not thread-safe, except cmsDoTransform.
+-// To ensure all functions are covered without frequent lock-taking nor risk of
+-// recursive lock, we lock in the top-level APIs.
+-static std::mutex& LcmsMutex() {
+-  static std::mutex m;
+-  return m;
+-}
+-
+ #if JPEGXL_ENABLE_SKCMS
+ 
+ JXL_MUST_USE_RESULT CIExy CIExyFromXYZ(const float XYZ[3]) {
+@@ -816,9 +807,6 @@ Status ApplyHlgOotf(JxlCms* t, float* JXL_RESTRICT buf, size_t xsize,
+ 
+ }  // namespace
+ 
+-// All functions that call lcms directly (except ColorSpaceTransform::Run) must
+-// lock LcmsMutex().
+-
+ Status ColorEncoding::SetFieldsFromICC() {
+   // In case parsing fails, mark the ColorEncoding as invalid.
+   SetColorSpace(ColorSpace::kUnknown);
+@@ -858,7 +846,6 @@ Status ColorEncoding::SetFieldsFromICC() {
+   rendering_intent = static_cast<RenderingIntent>(rendering_intent32);
+ #else  // JPEGXL_ENABLE_SKCMS
+ 
+-  std::lock_guard<std::mutex> guard(LcmsMutex());
+   const cmsContext context = GetContext();
+ 
+   Profile profile;
+@@ -920,7 +907,6 @@ void JxlCmsDestroy(void* cms_data) {
+   if (cms_data == nullptr) return;
+   JxlCms* t = reinterpret_cast<JxlCms*>(cms_data);
+ #if !JPEGXL_ENABLE_SKCMS
+-  std::lock_guard<std::mutex> guard(LcmsMutex());
+   TransformDeleter()(t->lcms_transform);
+ #endif
+   delete t;
+@@ -957,7 +943,6 @@ void* JxlCmsInit(void* init_data, size_t num_threads, size_t xsize,
+     return nullptr;
+   }
+ #else   // JPEGXL_ENABLE_SKCMS
+-  std::lock_guard<std::mutex> guard(LcmsMutex());
+   const cmsContext context = GetContext();
+   Profile profile_src, profile_dst;
+   if (!DecodeProfile(context, c_src.ICC(), &profile_src)) {
+diff --git a/third_party/CMakeLists.txt b/third_party/CMakeLists.txt
+index afefbaa80b..095d5a5430 100644
+--- a/third_party/CMakeLists.txt
++++ b/third_party/CMakeLists.txt
+@@ -146,7 +146,7 @@ if (JPEGXL_ENABLE_SKCMS OR JPEGXL_ENABLE_PLUGINS)
+ endif ()
+ if (JPEGXL_ENABLE_VIEWERS OR NOT JPEGXL_ENABLE_SKCMS)
+   if( NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/lcms/.git" OR JPEGXL_FORCE_SYSTEM_LCMS2 )
+-    find_package(LCMS2 2.10)
++    find_package(LCMS2 2.13)
+     if ( NOT LCMS2_FOUND )
+       message(FATAL_ERROR "Please install lcms2 or run git submodule update --init")
+     endif ()
+#diff --git a/third_party/lcms b/third_party/lcms
+#index 65c63bf549..233004ae26 160000
+#--- a/third_party/lcms
+#+++ b/third_party/lcms
+#@@ -1 +1 @@
+#-Subproject commit 65c63bf549d78253c14b30b3d62cb668bbbe612c
+#+Subproject commit 233004ae26b238b2831ff60eea9e753b99d97906
+diff --git a/third_party/lcms2.cmake b/third_party/lcms2.cmake
+index 906e777305..c33f877659 100644
+--- a/third_party/lcms2.cmake
++++ b/third_party/lcms2.cmake
+@@ -60,4 +60,18 @@ target_compile_definitions(lcms2
+ target_compile_definitions(lcms2
+   PUBLIC "-DCMS_NO_REGISTER_KEYWORD=1")
+ 
++# Ensure that a thread safe alternative of gmtime is used in LCMS
++include(CheckSymbolExists)
++check_symbol_exists(gmtime_r "time.h" HAVE_GMTIME_R)
++if (HAVE_GMTIME_R)
++  target_compile_definitions(lcms2
++    PUBLIC "-DHAVE_GMTIME_R=1")
++else()
++  check_symbol_exists(gmtime_s "time.h" HAVE_GMTIME_S)
++  if (HAVE_GMTIME_S)
++    target_compile_definitions(lcms2
++      PUBLIC "-DHAVE_GMTIME_S=1")
++  endif()
++endif()
++
+ set_property(TARGET lcms2 PROPERTY POSITION_INDEPENDENT_CODE ON)

libjxl.changes

@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Mon Dec 19 12:35:30 UTC 2022 - Antonio Larrosa <alarrosa@suse.com>
+
+- Add patch (applied reversed) to revert the requirement for an
+  updated liblcms2 library when we have an older one. This allows
+  libjxl to build in SLE15 SP4/SP5 (and Leap 15.4/15.5):
+  * 0001-Remove-LCMS-mutex.patch
+
 -------------------------------------------------------------------
 Thu Dec 15 11:32:45 UTC 2022 - Simon Vogl <simon.vogl@gmx.net>
 

libjxl.spec

@@ -26,10 +26,11 @@ URL:            https://jpegxl.info/
 #Git-Clone:     https://github.com/libjxl/libjxl
 Source:         https://github.com/libjxl/libjxl/archive/refs/tags/v%version.tar.gz
 Source1:        baselibs.conf
+Patch0:         0001-Remove-LCMS-mutex.patch
 BuildRequires:  c++_compiler
 BuildRequires:  cmake
 BuildRequires:  pkg-config
-BuildRequires:  pkgconfig(lcms2)
+BuildRequires:  pkgconfig(lcms2) >= 2.10
 BuildRequires:  pkgconfig(libbrotlicommon)
 BuildRequires:  pkgconfig(libbrotlidec)
 BuildRequires:  pkgconfig(libbrotlienc)
@@ -65,7 +66,13 @@ Summary:        Command-line utilities to convert from/to JPEG XL
 Command-line utilities to convert from/to JPEG XL.
 
 %prep
-%autosetup -p1
+%setup -q
+
+# libjxl 0.7.0 requires lcms2 >= 2.13, so if we have an older version
+# (as in SLE15/Leap) just reverse the patch that adds that dependency
+%if %{pkg_vcmp liblcms2-2 < 2.13}
+%patch0 -p1 -R
+%endif
 
 %build
 %cmake -DJPEGXL_FORCE_SYSTEM_HWY=ON -DJPEGXL_FORCE_SYSTEM_BROTLI=ON \