libclang.ffi: find the latest llvm- dir on unix

diff --git a/extra/libclang/ffi/ffi.factor b/extra/libclang/ffi/ffi.factor
index 8dc86de4f4faa15e82a93966ee478fae3244be78..48668ddbf7fb5cd2f28ba259f6a3ca748707c2e9 100644 (file)
--- a/extra/libclang/ffi/ffi.factor
+++ b/extra/libclang/ffi/ffi.factor
@@ -1,15 +1,23 @@
 ! Copyright (C) 2023 Doug Coleman.
 ! See https://factorcode.org/license.txt for BSD license.
 USING: alien alien.c-types alien.libraries alien.syntax
-classes.struct combinators kernel system ;
+classes.struct combinators io.directories io.pathnames kernel
+sequences sorting.human system ;
 IN: libclang.ffi
 
 LIBRARY: clang
 
+<<
+: latest-libclang ( -- path/f )
+    "/usr/lib/" qualified-directory-files
+    [ file-name "llvm-" head? ] filter
+    human-sort <reversed> ?first ;
+>>
+
 << "clang" {
     { [ os windows? ] [ "libclang.dll" ] }
     { [ os macosx? ] [ "/Library/Developer/CommandLineTools/usr/lib/libclang.dylib" ] }
-    { [ os unix? ] [ "/usr/lib/llvm-10/lib/libclang.so" ] }
+    { [ os unix? ] [ latest-libclang "lib/libclang.so" append-path ] }
 } cond cdecl add-library >>
 
 CONSTANT: UINT_MAX 4294967295