Use llvm16 on Debian

Author: yitzchak

debian/control

@@ -2,9 +2,9 @@ Source: clasp-cl
 Section: lisp
 Priority: optional
 Maintainer: Tarn W. Burton <twburton@gmail.com>
-Build-Depends: debhelper-compat (= 13), libelf-dev, libgmp-dev, llvm-18,
-	clang-18, sbcl, libclang-18-dev, llvm-18-dev, ninja-build, libfmt-dev,
-	git, pkg-config, libboost-all-dev, libclang-cpp18, libclang-cpp18-dev,
+Build-Depends: debhelper-compat (= 13), libelf-dev, libgmp-dev, llvm-16,
+	clang-16, sbcl, libclang-16-dev, llvm-16-dev, ninja-build, libfmt-dev,
+	git, pkg-config, libboost-all-dev, libclang-cpp16, libclang-cpp16-dev,
 	libnetcdf-dev, libczmq-dev, libexpat1-dev
 Standards-Version: 4.5.1
 Homepage: https://github.com/clasp-developers/clasp
@@ -20,7 +20,7 @@ Provides: lisp-compiler
 Architecture: any
 Build-Profiles: <!noclasp>
 Depends: ${shlibs:Depends}, ${misc:Depends}, libelf1, libgmp10, libgmpxx4ldbl,
-	llvm-18, clang-18, libclang-cpp18
+	llvm-16, clang-16, libclang-cpp16
 Description: Common Lisp implementation that brings Common Lisp and C++ Together
 	Clasp is a new Common Lisp implementation that seamlessly interoperates
 	with C++ libraries and programs using LLVM for compilation to native
@@ -37,9 +37,9 @@ Conflicts: clasp-cl
 Provides: lisp-compiler, clasp-cl
 Architecture: any
 Build-Profiles: <!nocando>
-Depends: ${shlibs:Depends}, ${misc:Depends}, libelf-dev, libgmp-dev, llvm-18,
-	clang-18, sbcl, libclang-18-dev, llvm-18-dev, libfmt-dev,
-	libclang-cpp18, libclang-cpp18-dev, libnetcdf-dev, libczmq-dev,
+Depends: ${shlibs:Depends}, ${misc:Depends}, libelf-dev, libgmp-dev, llvm-16,
+	clang-16, sbcl, libclang-16-dev, llvm-16-dev, libfmt-dev,
+	libclang-cpp16, libclang-cpp16-dev, libnetcdf-dev, libczmq-dev,
 	libexpat1-dev, ninja-build
 Description: Common Lisp implementation that brings Common Lisp and C++ Together
 	Clasp is a new Common Lisp implementation that seamlessly interoperates