Use a better workaround for Clang.

nheko.spec

@@ -8,10 +8,6 @@
 
 %if %{with clang}
 %global toolchain clang
-# https://bugzilla.redhat.com/show_bug.cgi?id=1918924
-%ifarch %{arm}
-%global _lto_cflags %{nil}
-%endif
 %endif
 
 Name: nheko
@@ -95,6 +91,15 @@ for Matrix that feels more like a mainstream chat app.
 
 %build
 %cmake -G Ninja \
+%if %{with clang}
+    -DCMAKE_C_COMPILER=%{_bindir}/clang \
+    -DCMAKE_CXX_COMPILER=%{_bindir}/clang++ \
+    -DCMAKE_AR=%{_bindir}/llvm-ar \
+    -DCMAKE_RANLIB=%{_bindir}/llvm-ranlib \
+    -DCMAKE_LINKER=%{_bindir}/llvm-ld \
+    -DCMAKE_OBJDUMP=%{_bindir}/llvm-objdump \
+    -DCMAKE_NM=%{_bindir}/llvm-nm \
+%endif
     -DCMAKE_BUILD_TYPE=Release \
     -DCOMPILE_QML:BOOL=OFF \
     -DHUNTER_ENABLED:BOOL=OFF \