Document that you need gdb for runtime-attaching.

diff --git a/README.md b/README.md
index 92fb4e1..4620e6f 100644 (file)
--- a/README.md
+++ b/README.md
@@ -76,6 +76,8 @@ following libraries:
 - libunwind
 - elfutils: libdwarf
 
+For runtime-attaching, you will need `gdb` installed.
+
 ### `heaptrack_gui` dependencies
 
 The graphical user interface to interpret and analyze the data collected by heaptrack