Use llvm package instead of llvm18

Signed-off-by: dm4 <dm4@secondstate.io>

wasmedge.spec

@@ -15,12 +15,12 @@ Source0: %{url}/releases/download/%{version}/%{reponame}-%{version}-src.tar.gz
 BuildRequires: cmake
 BuildRequires: gcc-c++
 BuildRequires: git
-BuildRequires: lld18-devel
-BuildRequires: llvm18-devel
+BuildRequires: lld-devel
+BuildRequires: llvm-devel
 BuildRequires: ninja-build
 BuildRequires: spdlog-devel
-Requires:      lld18
-Requires:      llvm18
+Requires:      lld
+Requires:      llvm
 Requires:      spdlog
 # Currently wasmedge could only be built on specific arches
 ExclusiveArch: x86_64 aarch64
@@ -59,11 +59,11 @@ This package contains necessary header files for %{reponame} development.
 [ -f VERSION ] || echo -n %{version} > VERSION
 
 %build
-%cmake -GNinja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DBUILD_SHARED_LIBS=OFF -DWASMEDGE_BUILD_TESTS=OFF -DLLVM_DIR=/usr/lib64/llvm18/lib/cmake/llvm
+%cmake -GNinja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DBUILD_SHARED_LIBS=OFF -DWASMEDGE_BUILD_TESTS=OFF
 %cmake_build
 mkdir rt
 cd rt
-%cmake -S .. -GNinja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DBUILD_SHARED_LIBS=OFF -DWASMEDGE_BUILD_TESTS=OFF -DWASMEDGE_BUILD_AOT_RUNTIME=OFF -DLLVM_DIR=/usr/lib64/llvm18/lib/cmake/llvm
+%cmake -S .. -GNinja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DBUILD_SHARED_LIBS=OFF -DWASMEDGE_BUILD_TESTS=OFF -DWASMEDGE_BUILD_AOT_RUNTIME=OFF
 %cmake_build
 
 %install