build: Allow building on FreeBSD

bin/env.bash

@@ -3,6 +3,8 @@ set -euo pipefail
 system=$(uname)
 if [[ $system == "Linux" ]]; then
     ext="so"
+elif [[ $system == "FreeBSD" ]]; then
+    ext="so"
 elif [[ $system == "Darwin" ]]; then
     ext="dylib"
 else

core/tsc-dyn-get.el

@@ -72,7 +72,7 @@ this to nil."
   (pcase system-type
     ('windows-nt "dll")
     ('darwin "dylib")
-    ((or 'gnu 'gnu/linux 'gnu/kfreebsd) "so")
+    ((or 'gnu 'gnu/linux 'gnu/kfreebsd 'berkeley-unix) "so")
     ((or 'ms-dos 'cygwin) (error "Unsupported system-type %s" system-type))
     (_ "so")))
 
@@ -82,7 +82,7 @@ this to nil."
 
 ;;; TODO: Make this correct.
 (defun tsc-dyn-get--system-specific-file ()
-  "Return the dynamic module filename, which is system-dependent."
+  "Return the pre-built dynamic module filename, which is system-dependent."
   (pcase system-type
     ('windows-nt "tsc-dyn.x86_64-pc-windows-msvc.dll")
     ('darwin (if (string-prefix-p "x86_64" system-configuration)

lisp/tree-sitter-load.el

@@ -32,6 +32,7 @@ See `tree-sitter-require'.")
   (pcase system-type
     ;; The CLI tool outputs `.so', but `.dylib' is more sensible on macOS.
     ('darwin (list ".dylib" ".so"))
+    ('berkeley-unix (list ".so"))
     ('gnu/linux (list ".so"))
     ('android (list ".so"))
     ('windows-nt (list ".dll"))