cmake: sca: iar: Refactor CSTAT_RULESET

Create a variable containing the parameters to be consumed
by the IAR C-STAT Checks Manifest Handler, avoiding repetition.

Signed-off-by: Felipe Torrezan <felipe.torrezan@iar.com>

Author: felipe-iar

cmake/sca/iar/sca.cmake

@@ -27,17 +27,21 @@ zephyr_get(CSTAT_CLEANUP)
 set(output_dir ${CMAKE_BINARY_DIR}/sca/iar)
 file(MAKE_DIRECTORY ${output_dir})
 
-# The IAR C-STAT ruleset defaults to `stdchecks`
+# Set the IAR C-STAT ruleset
+set(iar_checks_arg --output=${output_dir}/cstat_sel_checks.txt)
 if(CSTAT_RULESET MATCHES "^(cert|security|misrac2004|misrac\\+\\+2008|misrac2012)")
-  execute_process(COMMAND ${IAR_CHECKS} --default=${CSTAT_RULESET} --output=${output_dir}/cstat_sel_checks.txt)
+  set(iar_checks_arg ${iar_checks_arg} --default=${CSTAT_RULESET})
 elseif(CSTAT_RULESET MATCHES "^all")
-  execute_process(COMMAND ${IAR_CHECKS} --all --output=${output_dir}/cstat_sel_checks.txt)
+  set(iar_checks_arg ${iar_checks_arg} --all)
 else()
-  execute_process(COMMAND ${IAR_CHECKS} --default=stdchecks --output=${output_dir}/cstat_sel_checks.txt)
+  set(iar_checks_arg ${iar_checks_arg} --default=stdchecks)
 endif()
+execute_process(COMMAND ${IAR_CHECKS} ${iar_checks_arg})
+
+# Forwards the ruleset manifest file to icstat
 set(output_arg --checks=${output_dir}/cstat_sel_checks.txt)
 
-# Analysis parallelization
+# Analsys parallelization
 if(CSTAT_ANALYZE_THREADS)
   set(output_arg ${output_arg};--parallel=${CSTAT_ANALYZE_THREADS})
 endif()