diff --git a/Project-Setup.md b/Project-Setup.md
index fb14cf2..8ef01ed 100644
--- a/Project-Setup.md
+++ b/Project-Setup.md
@@ -227,6 +227,20 @@ If the compiler driver is a GCC cross-compiler, `--target=` may be required. Sup
 
 Otherwise clang will `error: unknown target CPU 'armv7a'`.
 
+#### IAR Embedded Workbench for Arm
+
+See <https://github.com/MaskRay/ccls/issues/476>.
+
+```
+%compile_commands.json
+-target
+armv7-linux-gnueabi
+-D__ICCARM__
+-U__GNUC__
+-U__clang__
+-isystem../Config/exec/arm/inc/c
+```
+
 ## `compile_commands.json` examples
 
 ### Linux kernel