Modules: Check for ARGC before using ARGV#

ARGV# could be defined from a parent scope.

1 files changed, 24 insertions, 12 deletions

diff --git a/Modules/GetPrerequisites.cmake b/Modules/GetPrerequisites.cmake
index 9fb85feb12..23d486eadf 100644
--- a/Modules/GetPrerequisites.cmake
+++ b/Modules/GetPrerequisites.cmake
@@ -330,7 +330,11 @@ endfunction()
 function(gp_resolve_item context item exepath dirs resolved_item_var)
   set(resolved 0)
   set(resolved_item "${item}")
-  set(rpaths "${ARGV5}")
+  if(ARGC GREATER 5)
+    set(rpaths "${ARGV5}")
+  else()
+    set(rpaths "")
+  endif()
 
   # Is it already resolved?
   #
@@ -481,7 +485,11 @@ endfunction()
 
 
 function(gp_resolved_file_type original_file file exepath dirs type_var)
-  set(rpaths "${ARGV5}")
+  if(ARGC GREATER 5)
+    set(rpaths "${ARGV5}")
+  else()
+    set(rpaths "")
+  endif()
   #message(STATUS "**")
 
   if(NOT IS_ABSOLUTE "${original_file}")
@@ -623,7 +631,11 @@ endfunction()
 function(get_prerequisites target prerequisites_var exclude_system recurse exepath dirs)
   set(verbose 0)
   set(eol_char "E")
-  set(rpaths "${ARGV6}")
+  if(ARGC GREATER 6)
+    set(rpaths "${ARGV6}")
+  else()
+    set(rpaths "")
+  endif()
 
   if(NOT IS_ABSOLUTE "${target}")
     message("warning: target '${target}' is not absolute...")
@@ -881,22 +893,22 @@ endfunction()
 
 
 function(list_prerequisites target)
-  if("${ARGV1}" STREQUAL "")
-    set(all 1)
-  else()
+  if(ARGC GREATER 1 AND NOT "${ARGV1}" STREQUAL "")
     set(all "${ARGV1}")
+  else()
+    set(all 1)
   endif()
 
-  if("${ARGV2}" STREQUAL "")
-    set(exclude_system 0)
-  else()
+  if(ARGC GREATER 2 AND NOT "${ARGV2}" STREQUAL "")
     set(exclude_system "${ARGV2}")
+  else()
+    set(exclude_system 0)
   endif()
 
-  if("${ARGV3}" STREQUAL "")
-    set(verbose 0)
-  else()
+  if(ARGC GREATER 3 AND NOT "${ARGV3}" STREQUAL "")
     set(verbose "${ARGV3}")
+  else()
+    set(verbose 0)
   endif()
 
   set(count 0)