diff --git a/CMakeModules/BuildElixir.cmake b/CMakeModules/BuildElixir.cmake
index 6dcc912e66..9aa0f9df90 100644
--- a/CMakeModules/BuildElixir.cmake
+++ b/CMakeModules/BuildElixir.cmake
@@ -81,6 +81,10 @@ macro(pack_runnable avm_name main)
     else()
         set(INCLUDE_LINES "")
     endif()
+    set(PACKBEAM_PRUNE_ARGS "")
+    if(AVM_PRUNE_RUNNABLES)
+        set(PACKBEAM_PRUNE_ARGS "-p")
+    endif()
 
     foreach(archive_name ${ARGN})
         if(${archive_name} STREQUAL "exavmlib")
@@ -94,7 +98,7 @@ macro(pack_runnable avm_name main)
     add_custom_command(
         OUTPUT ${avm_name}.avm
         DEPENDS ${avm_name}_main ${ARCHIVE_TARGETS} PackBEAM Elixir.${main}.beam ${ARCHIVES}
-        COMMAND ${CMAKE_BINARY_DIR}/tools/packbeam/packbeam create -p -s Elixir.${main} ${INCLUDE_LINES} ${avm_name}.avm Elixir.${main}.beam ${ARCHIVES}
+        COMMAND ${CMAKE_BINARY_DIR}/tools/packbeam/packbeam create ${PACKBEAM_PRUNE_ARGS} -s Elixir.${main} ${INCLUDE_LINES} ${avm_name}.avm Elixir.${main}.beam ${ARCHIVES}
         COMMENT "Packing runnable ${avm_name}.avm"
         VERBATIM
     )
diff --git a/CMakeModules/BuildErlang.cmake b/CMakeModules/BuildErlang.cmake
index aa72718840..509cc8bd70 100644
--- a/CMakeModules/BuildErlang.cmake
+++ b/CMakeModules/BuildErlang.cmake
@@ -285,11 +285,15 @@ macro(pack_runnable avm_name main)
     else()
         set(INCLUDE_LINES "")
     endif()
+    set(PACKBEAM_PRUNE_ARGS "")
+    if(AVM_PRUNE_RUNNABLES)
+        set(PACKBEAM_PRUNE_ARGS "-p")
+    endif()
 
     add_custom_command(
         OUTPUT ${avm_name}.avm
         DEPENDS ${avm_name}_main ${main}.beam ${pack_runnable_${avm_name}_archives} ${pack_runnable_${avm_name}_archive_targets} PackBEAM
-        COMMAND ${CMAKE_BINARY_DIR}/tools/packbeam/packbeam create -p -s ${main} ${INCLUDE_LINES} ${avm_name}.avm ${main}.beam ${pack_runnable_${avm_name}_archives}
+        COMMAND ${CMAKE_BINARY_DIR}/tools/packbeam/packbeam create ${PACKBEAM_PRUNE_ARGS} -s ${main} ${INCLUDE_LINES} ${avm_name}.avm ${main}.beam ${pack_runnable_${avm_name}_archives}
         COMMENT "Packing runnable ${avm_name}.avm"
         VERBATIM
     )
@@ -417,11 +421,15 @@ macro(pack_uf2 avm_name main)
     else()
         set(INCLUDE_LINES "")
     endif()
+    set(PACKBEAM_PRUNE_ARGS "")
+    if(AVM_PRUNE_RUNNABLES)
+        set(PACKBEAM_PRUNE_ARGS "-p")
+    endif()
 
     add_custom_command(
         OUTPUT ${avm_name}.avm
         DEPENDS ${avm_name}_main ${main}.beam ${pack_uf2_${avm_name}_archives} ${pack_uf2_${avm_name}_archive_targets} PackBEAM
-        COMMAND ${CMAKE_BINARY_DIR}/tools/packbeam/packbeam create ${INCLUDE_LINES} -p -s ${main} ${avm_name}.avm ${main}.beam ${pack_uf2_${avm_name}_archives}
+        COMMAND ${CMAKE_BINARY_DIR}/tools/packbeam/packbeam create ${INCLUDE_LINES} ${PACKBEAM_PRUNE_ARGS} -s ${main} ${avm_name}.avm ${main}.beam ${pack_uf2_${avm_name}_archives}
         COMMENT "Packing runnable ${avm_name}.avm"
         VERBATIM
     )
diff --git a/CMakeModules/BuildGleam.cmake b/CMakeModules/BuildGleam.cmake
index f63fd98c63..d911c4bb06 100644
--- a/CMakeModules/BuildGleam.cmake
+++ b/CMakeModules/BuildGleam.cmake
@@ -59,6 +59,10 @@ macro(pack_gleam_runnable avm_name main)
     else()
         set(INCLUDE_LINES "")
     endif()
+    set(PACKBEAM_PRUNE_ARGS "")
+    if(AVM_PRUNE_RUNNABLES)
+        set(PACKBEAM_PRUNE_ARGS "-p")
+    endif()
 
     foreach(archive_name ${ARGN})
         if(${archive_name} STREQUAL "gleam_avm")
@@ -75,7 +79,7 @@ macro(pack_gleam_runnable avm_name main)
         COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/gleam.toml ${CMAKE_CURRENT_SOURCE_DIR}/manifest.toml ${CMAKE_CURRENT_BINARY_DIR}/
         COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_SOURCE_DIR}/src ${CMAKE_CURRENT_BINARY_DIR}/src
         COMMAND gleam export erlang-shipment
-        COMMAND ${CMAKE_BINARY_DIR}/tools/packbeam/packbeam create -p -s ${main} ${INCLUDE_LINES} ${avm_name}.avm ${BEAMS} ${ARCHIVES}
+        COMMAND ${CMAKE_BINARY_DIR}/tools/packbeam/packbeam create ${PACKBEAM_PRUNE_ARGS} -s ${main} ${INCLUDE_LINES} ${avm_name}.avm ${BEAMS} ${ARCHIVES}
         COMMENT "Packing gleam runnable ${avm_name}.avm"
     )
 
diff --git a/examples/elixir/stm32/CMakeLists.txt b/examples/elixir/stm32/CMakeLists.txt
index cf15d0b46a..fe94a28c12 100644
--- a/examples/elixir/stm32/CMakeLists.txt
+++ b/examples/elixir/stm32/CMakeLists.txt
@@ -22,4 +22,7 @@ project(examples_elixir_stm32)
 
 include(BuildElixir)
 
+# STM32 examples bundle runtime libs in the same AVM and targets are flash-constrained.
+set(AVM_PRUNE_RUNNABLES ON)
+
 pack_runnable(MultiBlink MultiBlink estdlib eavmlib exavmlib)
diff --git a/examples/erlang/stm32/CMakeLists.txt b/examples/erlang/stm32/CMakeLists.txt
index cac029a7eb..fb46e75f27 100644
--- a/examples/erlang/stm32/CMakeLists.txt
+++ b/examples/erlang/stm32/CMakeLists.txt
@@ -22,6 +22,9 @@ project(examples_erlang_stm32)
 
 include(BuildErlang)
 
+# STM32 examples bundle runtime libs in the same AVM and targets are flash-constrained.
+set(AVM_PRUNE_RUNNABLES ON)
+
 pack_runnable(blink_weact_studio_blackpill blink_weact_studio_blackpill eavmlib)
 pack_runnable(blink_weact_studio_h562 blink_weact_studio_h562 eavmlib)
 pack_runnable(blink_weact_studio_h743 blink_weact_studio_h743 eavmlib)