SDCC compiler: use sdar instead of sdcclib as librarian for recent versions

Fixes: #19988

Help/release/dev/sdcc-new-librarian.rst

@@ -0,0 +1,6 @@
+sdcc-new-librarian
+------------------
+
+* Since sdcc 3.2.0, sdcclib has been deprecated in favor of sdar as librarian.
+  Since sdcc 3.8.6, it has been removed from the distribution.
+  Use sdar if found, else use sdcclib to keep older compatibility.

Modules/Platform/Generic-SDCC-C.cmake

@@ -19,14 +19,28 @@ set(CMAKE_DL_LIBS "")
 
 set(CMAKE_C_OUTPUT_EXTENSION ".rel")
 
-# find sdcclib as CMAKE_AR
-# since cmake may already have searched for "ar", sdcclib has to
-# be searched with a different variable name (SDCCLIB_EXECUTABLE)
-# and must then be forced into the cache
+# find sdar/sdcclib as CMAKE_AR
+# since cmake may already have searched for "ar", sdar has to
+# be searched with a different variable name (SDCCAR_EXECUTABLE)
+# and must then be forced into the cache.
+# sdcclib has been deprecated in SDCC 3.2.0 and removed in 3.8.6
+# so we first look for sdar
 get_filename_component(SDCC_LOCATION "${CMAKE_C_COMPILER}" PATH)
-find_program(SDCCLIB_EXECUTABLE sdcclib PATHS "${SDCC_LOCATION}" NO_DEFAULT_PATH)
-find_program(SDCCLIB_EXECUTABLE sdcclib)
-set(CMAKE_AR "${SDCCLIB_EXECUTABLE}" CACHE FILEPATH "The sdcc librarian" FORCE)
+find_program(SDCCAR_EXECUTABLE sdar NAMES sdcclib PATHS "${SDCC_LOCATION}" NO_DEFAULT_PATH)
+find_program(SDCCAR_EXECUTABLE sdar NAMES sdcclib)
+# for compatibility, in case SDCCLIB_EXECUTABLE is set, we use it
+if(DEFINED SDCCLIB_EXECUTABLE)
+  set(CMAKE_AR "${SDCCLIB_EXECUTABLE}" CACHE FILEPATH "The sdcc librarian" FORCE)
+else()
+  set(CMAKE_AR "${SDCCAR_EXECUTABLE}" CACHE FILEPATH "The sdcc librarian" FORCE)
+endif()
+
+
+if("${SDCCAR_EXECUTABLE}" MATCHES "sdcclib")
+  set(CMAKE_AR_OPTIONS "-a")
+else()
+  set(CMAKE_AR_OPTIONS "-rc")
+endif()
 
 # CMAKE_C_FLAGS_INIT and CMAKE_EXE_LINKER_FLAGS_INIT should be set in a CMAKE_SYSTEM_PROCESSOR file
 if(NOT DEFINED CMAKE_C_FLAGS_INIT)
@@ -45,10 +59,10 @@ set(CMAKE_C_COMPILE_OBJECT  "<CMAKE_C_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -o
 # link object files to an executable
 set(CMAKE_C_LINK_EXECUTABLE "<CMAKE_C_COMPILER> <FLAGS> <OBJECTS> -o <TARGET> <CMAKE_C_LINK_FLAGS> <LINK_FLAGS> <LINK_LIBRARIES>")
 
-# needs sdcc 2.7.0 + sddclib from cvs
+# needs sdcc + sdar/sdcclib
 set(CMAKE_C_CREATE_STATIC_LIBRARY
-      "\"${CMAKE_COMMAND}\" -E rm -f <TARGET>"
-      "<CMAKE_AR> -a <TARGET> <LINK_FLAGS> <OBJECTS> ")
+      "\"${CMAKE_COMMAND}\" -E remove <TARGET>"
+      "<CMAKE_AR> ${CMAKE_AR_OPTIONS} <TARGET> <LINK_FLAGS> <OBJECTS> ")
 
 # not supported by sdcc
 set(CMAKE_C_CREATE_SHARED_LIBRARY "")