diff --git a/meson.changes b/meson.changes
index 27ce2d5..db4ed42 100644
--- a/meson.changes
+++ b/meson.changes
@@ -1,3 +1,21 @@
+-------------------------------------------------------------------
+Tue Dec 12 01:47:37 UTC 2023 - Yifan Jiang <yfjiang@suse.com>
+
+- Make BuildRequires libstdc++6-devel-gcc11 more precise, for
+  SLE 15 SP4 and SLE 15 SP5 only.
+
+-------------------------------------------------------------------
+Mon Dec 11 10:31:25 UTC 2023 - Yifan Jiang <yfjiang@suse.com>
+
+- Specify clang and llvm versions in SLE/Leap.
+
+-------------------------------------------------------------------
+Mon Dec 11 10:25:14 UTC 2023 - Yifan Jiang <yfjiang@suse.com>
+
+- Fix shebang replacement for ninja test cases. The curly brackets
+  are necessary for the macro expansion in the splitted lines
+  worked correctly.
+
 -------------------------------------------------------------------
 Mon Nov 27 14:29:20 UTC 2023 - Dominique Leuenberger <dimstar@opensuse.org>
 
@@ -217,6 +235,13 @@ Sat Feb 25 16:14:07 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de>
   + clang-cl (13) now accepts cpp_std=c++20
   + a sizable collection of bug fixes
 
+-------------------------------------------------------------------
+Mon Jan 16 01:36:31 UTC 2023 - Yifan Jiang <yfjiang@suse.com>
+
+- Add BuildRequires libstdc++6-devel-gcc11 for SLE 15 SP4 and
+  version above, which is necessary to make clang-tiny unit test
+  run.
+
 -------------------------------------------------------------------
 Thu Jan  5 04:43:00 UTC 2023 - Luciano Santos <luc14n0@opensuse.org>
 
diff --git a/meson.spec b/meson.spec
index 48181ab..16e8b22 100644
--- a/meson.spec
+++ b/meson.spec
@@ -68,7 +68,11 @@ BuildArch:      noarch
 ExclusiveArch:  x86_64
 BuildRequires:  %{python_module devel}
 BuildRequires:  bison
+%if 0%{?sle_version} >= 150400 && 0%{?sle_version} < 160000
+BuildRequires:  clang17 >= 15
+%else
 BuildRequires:  clang >= 15
+%endif
 BuildRequires:  clang-tools >= 15
 BuildRequires:  cups-devel
 BuildRequires:  distribution-release
@@ -104,8 +108,15 @@ BuildRequires:  libjpeg-devel
 BuildRequires:  libpcap-devel
 BuildRequires:  libqt5-qtbase-common-devel
 BuildRequires:  libqt5-qtbase-private-headers-devel
+%if 0%{?sle_version} == 150400 || 0%{?sle_version} == 150500
+BuildRequires:  libstdc++6-devel-gcc11
+%endif
 BuildRequires:  libwmf-devel
+%if 0%{?sle_version} >= 150400 && 0%{?sle_version} < 160000
+BuildRequires:  llvm17-devel
+%else
 BuildRequires:  llvm-devel
+%endif
 BuildRequires:  meson = %{version}
 BuildRequires:  ninja
 BuildRequires:  pkgconfig
@@ -262,8 +273,8 @@ export PATH="${PWD}/bin:${PATH}"
 c++ --version
 
 # Fix shebang in test cases getting executed by ninja
-%python_expand find test\ cases -type f -name "*.py" \
-    -exec sed -i "1s@#!.*python.*@#!$(realpath %{_bindir}/$python)@" {} +
+%{python_expand find test\ cases -type f -name "*.py" \
+    -exec sed -i "1s@#!.*python.*@#!$(realpath %{_bindir}/$python)@" {} +}
 %endif
 
 export LANG=C.UTF-8