Start phasing out old OTP versions

Start disabling them on MCU targets.

Signed-off-by: Davide Bettio <davide@uninstall.it>

Author: bettio

CMakeLists.txt

@@ -28,6 +28,7 @@ find_package(Erlang)
 find_package(Elixir)
 find_package(Gleam)
 
+option(AVM_ENABLE_OLD_OTP_VERSIONS "Enable OTP version < 26" ON)
 option(AVM_DISABLE_FP "Disable floating point support." OFF)
 option(AVM_DISABLE_SMP "Disable SMP." OFF)
 option(AVM_DISABLE_TASK_DRIVER "Disable task driver support." OFF)

src/libAtomVM/CMakeLists.txt

@@ -199,6 +199,12 @@ if(AVM_SELECT_IN_TASK)
     target_compile_definitions(libAtomVM PUBLIC AVM_SELECT_IN_TASK)
 endif()
 
+# Start phasing out old OTP versions
+if(NOT AVM_ENABLE_OLD_OTP_VERSIONS)
+target_compile_definitions(${COMPONENT_LIB} PRIVATE MINIMUM_OTP_COMPILER_VERSION=26)
+target_compile_definitions(${COMPONENT_LIB} PRIVATE MAXIMUM_OTP_COMPILER_VERSION=29)
+endif()
+
 include(CheckIncludeFile)
 CHECK_INCLUDE_FILE(stdatomic.h STDATOMIC_INCLUDE)
 include(CheckCSourceCompiles)

src/libAtomVM/opcodesswitch.h

@@ -49,8 +49,12 @@
 
 // These constants can be used to reduce the size of the VM for a specific
 // range of compiler versions
+#ifndef MINIMUM_OTP_COMPILER_VERSION
 #define MINIMUM_OTP_COMPILER_VERSION 21
-#define MAXIMUM_OTP_COMPILER_VERSION 26
+#endif
+#ifndef MAXIMUM_OTP_COMPILER_VERSION
+#define MAXIMUM_OTP_COMPILER_VERSION 29
+#endif
 
 #ifdef __cplusplus
 extern "C" {

src/platforms/esp32/CMakeLists.txt

@@ -80,6 +80,7 @@ if (-std=gnu99 IN_LIST c_compile_options )
 endif()
 
 # Options that make sense for this platform
+option(AVM_ENABLE_OLD_OTP_VERSIONS "Enable OTP version < 26" OFF)
 option(AVM_DISABLE_SMP "Disable SMP." OFF)
 option(AVM_USE_32BIT_FLOAT "Use 32 bit floats." OFF)
 option(AVM_VERBOSE_ABORT "Print module and line number on VM abort" OFF)

src/platforms/rp2/CMakeLists.txt

@@ -58,6 +58,7 @@ set(HAVE_EXECVE "" CACHE INTERNAL "Have symbol execve" FORCE)
 set(HAVE_GETCWD "" CACHE INTERNAL "Have symbol getcwd" FORCE)
 
 # Options that make sense for this platform
+option(AVM_ENABLE_OLD_OTP_VERSIONS "Enable OTP version < 26" OFF)
 option(AVM_DISABLE_SMP "Disable SMP support." OFF)
 option(AVM_USE_32BIT_FLOAT "Use 32 bit floats." OFF)
 option(AVM_VERBOSE_ABORT "Print module and line number on VM abort" OFF)

src/platforms/stm32/CMakeLists.txt

@@ -25,6 +25,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../../../CMakeModules
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 
 # Options that make sense for this platform
+option(AVM_ENABLE_OLD_OTP_VERSIONS "Enable OTP version < 26" OFF)
 option(AVM_USE_32BIT_FLOAT "Use 32 bit floats." ON)
 option(AVM_VERBOSE_ABORT "Print module and line number on VM abort" OFF)
 option(AVM_CREATE_STACKTRACES "Create stacktraces" ON)