nitg: add the possibility to have runtime library written in C

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/src/abstract_compiler.nit b/src/abstract_compiler.nit
index 395f7a1..36d7ed1 100644 (file)
--- a/src/abstract_compiler.nit
+++ b/src/abstract_compiler.nit
@@ -70,6 +70,20 @@ redef class ModelBuilder
        do
                super
 
+               # Look for the the Nit clib path
+               var path_env = "NIT_DIR".environ
+               if not path_env.is_empty then
+                       var libname = "{path_env}/clib"
+                       if libname.file_exists then cc_paths.add(libname)
+               end
+
+               var libname = "{sys.program_name.dirname}/../clib"
+               if libname.file_exists then cc_paths.add(libname.simplify_path)
+
+               if cc_paths.is_empty then
+                       toolcontext.error(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
+               end
+
                # Add user defined cc_paths
                cc_paths.append(toolcontext.opt_cc_path.value)