Add missing runtime dependency to the SPIRV-Tools-opt development package

In the cmake support files provided by glslang, the mentioned package is
required, but was not listed as a runtime dependency of the glslang
development package.

glslang.changes

@@ -1,20 +1,3 @@
--------------------------------------------------------------------
-Thu Mar 13 16:47:27 UTC 2025 - Jan Engelhardt <jengelh@inai.de>
-
-- Update to release 15.2
-  * Emit error if using in/out with struct pointer
-  * Emit SPV_EXT_opacity_micromap if GL extension is present
-  * Support GL_NV_linear_swept_spheres, GLSL_EXT_nontemporal_keyword,
-    GL_NV_cluster_acceleration_structure, GL_NV_cooperative_vector,
-    GL_EXT_texture_offset_non_const, EXT_integer_dot_product
-  * Check SparseTextureOffset non-const parameters
-  * Revert cross-stage check for missing outputs
-  * Add support for OpTypeRayQueryKHR and
-    OpTypeAccelerationStructureKHR to SPVRemapper
-- Make build recipe POSIX sh compatible
-- Switch Leap compiler to gcc 13 following the rest of the
-  Vulkan stack
-
 -------------------------------------------------------------------
 Thu Jan  2 08:54:06 UTC 2025 - Ralf Habacker <ralf.habacker@freenet.de>
 

glslang.spec

@@ -1,7 +1,7 @@
 #
 # spec file for package glslang
 #
-# Copyright (c) 2025 SUSE LLC
+# Copyright (c) 2024 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -17,29 +17,26 @@
 
 
 %define lname libglslang15
-%if 0%{?suse_version} < 1600
-%define gcc_version 13
-%endif
-
 Name:           glslang
-Version:        15.2.0
+Version:        15.1.0
 Release:        0
 Summary:        OpenGL and OpenGL ES shader front end and validator
 License:        BSD-3-Clause
 Group:          Development/Libraries/C and C++
 URL:            https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/
 #Git-URL:	https://github.com/KhronosGroup/glslang
-# tag 15.2.0 missing in git as of 2025-03-13
-%define rev 0018771b46c492e28ca916b00eda96093381a3b2
-Source:         https://github.com/KhronosGroup/glslang/archive/%rev.tar.gz
+Source:         https://github.com/KhronosGroup/glslang/archive/refs/tags/%version.tar.gz
 Source3:        baselibs.conf
 BuildRequires:  bison
 BuildRequires:  cmake >= 3.14.0
 BuildRequires:  fdupes
-BuildRequires:  gcc%{?gcc_version} >= 9
-BuildRequires:  gcc%{?gcc_version}-c++ >= 9
 BuildRequires:  python3-base
-BuildRequires:  spirv-tools-devel >= 2025.1~rc1
+BuildRequires:  spirv-tools-devel >= 2024.4~rc2
+%if 0%{?suse_version} && 0%{?suse_version} < 1599
+BuildRequires:  gcc12-c++
+%else
+BuildRequires:  c++_compiler
+%endif
 
 %description
 glslang is a compiler front end for the OpenGL ES and OpenGL shading
@@ -89,17 +86,18 @@ This package contains additional headers that are not officially installed,
 but which some downstream packages rely on.
 
 %prep
-%autosetup -n glslang-%rev -p1
+%autosetup -p1
 
 %build
 %global _lto_cflags %{?_lto_cflags} -ffat-lto-objects
 # (gh#3052 #3311 #3312 #3593) -- supposedly handled better in
 # glslang-15 and onwards, do watch for ABI breaks
 #echo "V_%version { global: *; };" >/tmp/z.sym
+%if 0%{?suse_version} && 0%{?suse_version} < 1599
+export CC=gcc-12 CXX=g++-12
+%endif
 # Trim -Wl,--no-undefined for now (https://github.com/KhronosGroup/glslang/issues/1484)
 %cmake -DCMAKE_SHARED_LINKER_FLAGS="-Wl,--as-needed -Wl,-z,now" \
-	-DCMAKE_C_COMPILER="gcc%{?gcc_version:-%{gcc_version}}" \
-	-DCMAKE_CXX_COMPILER="g++%{?gcc_version:-%{gcc_version}}" \
 	-DALLOW_EXTERNAL_SPIRV_TOOLS:BOOL=ON -DENABLE_OPT:BOOL=ON
 %make_build
 
@@ -109,12 +107,12 @@ od="$PWD"
 %cmake_install
 
 b="%buildroot"
-cd "$b"
+pushd "$b"
 (
 	find usr/include -mindepth 1 -type d -printf "%%%%dir /%p\n"
 	find usr/include "(" -type f -o -type l ")" -printf "/%p\n"
 ) | sort >"$od/devel.files"
-cd -
+popd
 
 mkdir -p "$b/%_includedir/External/"
 cp -a glslang "$b/%_includedir/"
@@ -122,12 +120,12 @@ cp -a SPIRV StandAlone "$b/%_includedir/External/"
 find "$b/%_includedir/" -type f ! -iname "*.h" -a ! -iname "*.hpp" -print -delete
 find "$b/%_includedir/" -type f -exec chmod a-x "{}" "+"
 
-cd "$b"
+pushd "$b"
 (
 	find usr/include -mindepth 1 -type d -printf "%%%%dir /%p\n"
 	find usr/include "(" -type f -o -type l ")" -printf "/%p\n"
 ) | sort >"$od/devel_full.files"
-cd -
+popd
 comm -13 "$od/devel.files" "$od/devel_full.files" >"$od/devel2.files"
 
 # 3rd party programs use -lOSDependent (because pristine glslang shipped .a