Try to fix build

deno.spec

@@ -31,12 +31,8 @@ Source0:        %{name}-%{version}.tar.zst
 Source1:        registry.tar.zst
 BuildRequires:  cargo-packaging
 
-%if 0%{?suse_version} > 1600
 BuildRequires:  clang19
-%else
-BuildRequires:  gcc
-BuildRequires:  gcc-c++
-%endif
+BuildRequires:  libstdc++6-devel-gcc14
 
 # needed by `libz-ng-sys` after 1.36.1
 # see: https://build.opensuse.org/package/show/devel:languages:javascript/deno#comment-1808174
@@ -116,15 +112,10 @@ export CARGO_HOME="$PWD/.cargo"
 export CLANG_VERSION=$(clang --version | grep -m1 version | sed 's/.* \([0-9]\+\).*/\1/')
 export V8_FROM_SOURCE=1
 export CLANG_BASE_PATH=%{_prefix}
-%if 0%{?suse_version} > 1600
 export CC=clang
 export CXX=clang++
 export CFLAGS="%{optflags} -Wno-unknown-warning-option"
 export CXXFLAGS="%{optflags} -Wno-unknown-warning-option"
-%else
-export CFLAGS="%{optflags}"
-export CXXFLAGS="%{optflags}"
-%endif
 
 # https://www.chromium.org/developers/gn-build-configuration
 export GN_ARGS="clang_version=${CLANG_VERSION} use_lld=true enable_nacl = false blink_symbol_level = 0 v8_symbol_level = 0"