diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2ee6351c..30e3f9cd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,9 +31,4 @@ add_subdirectory(utest)
 # reminder: must come last: docs targets depend on all the other library/utest targets
 add_subdirectory(docs)
 
-# ----------------------------------------------------------------
-# docs targets depend on all the other library/utest targets
-#
-#add_subdirectory(docs)
-
 # end CMakeLists.txt
diff --git a/include/xo/jit/Jit.hpp b/include/xo/jit/Jit.hpp
index f983fb2e..5130b844 100644
--- a/include/xo/jit/Jit.hpp
+++ b/include/xo/jit/Jit.hpp
@@ -15,7 +15,7 @@
 # include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
 # include "llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h"
 # include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
-# include "llvm/ExecutionEngine/Orc/Shared/ExecutorSymbolDef.h"
+# include "llvm/ExecutionEngine/Orc/Shared/ExecutorSymbolDef.h" // need llvm18
 # include "llvm/ExecutionEngine/SectionMemoryManager.h"
 # include "llvm/IR/DataLayout.h"
 # include "llvm/IR/LLVMContext.h"
diff --git a/src/jit/MachPipeline.cpp b/src/jit/MachPipeline.cpp
index 850d0801..d45f03db 100644
--- a/src/jit/MachPipeline.cpp
+++ b/src/jit/MachPipeline.cpp
@@ -604,6 +604,8 @@ namespace xo {
                 return ir_builder.CreateUDiv(args[1], args[2]);
             case llvmintrinsic::fp_add:
                 return ir_builder.CreateFAdd(args[1], args[2]);
+            case llvmintrinsic::fp_sub:
+                return ir_builder.CreateFSub(args[1], args[2]);
             case llvmintrinsic::fp_mul:
                 return ir_builder.CreateFMul(args[1], args[2]);
             case llvmintrinsic::fp_div:
@@ -954,6 +956,11 @@ namespace xo {
                               llvm::IRBuilder<> & ir_builder)
         {
             switch(expr->extype()) {
+            case exprtype::define:
+            case exprtype::assign:
+            case exprtype::sequence:
+            case exprtype::convert:
+                break;
             case exprtype::constant:
                 return this->codegen_constant(ConstantInterface::from(expr));
             case exprtype::primitive:
diff --git a/src/jit/activation_record.cpp b/src/jit/activation_record.cpp
index 7b1228e6..5d0fd3ad 100644
--- a/src/jit/activation_record.cpp
+++ b/src/jit/activation_record.cpp
@@ -10,7 +10,7 @@ namespace xo {
         using std::cerr;
         using std::endl;
 
-        activation_record::activation_record(const ref::rp<Lambda> & lm)
+        activation_record::activation_record(const rp<Lambda> & lm)
             : lambda_{lm},
               binding_v_(lm->n_arg())
         {
diff --git a/src/jit/type2llvm.cpp b/src/jit/type2llvm.cpp
index e5c07cac..8bfb2a3b 100644
--- a/src/jit/type2llvm.cpp
+++ b/src/jit/type2llvm.cpp
@@ -205,9 +205,12 @@ namespace xo {
         } /*struct_td_to_llvm_type*/
 
         llvm::PointerType *
-        type2llvm::pointer_td_to_llvm_type(xo::ref::brw<LlvmContext> llvm_cx,
-                                           TypeDescr pointer_td)
+        type2llvm::pointer_td_to_llvm_type(xo::ref::brw<LlvmContext> llvm_cx
+                                           , TypeDescr pointer_td
+            )
         {
+            (void)pointer_td;
+
             assert(pointer_td->is_pointer());
 
 #ifdef OBSOLETE