ENH: Remove SKIP_RULE_DEPENDS option from add_custom_command()

  - Option was recently added but never released.
  - Custom commands no longer depend on build.make so we do
    not need the option.
  - Rule hashes now take care of rebuilding when rules change
    so the dependency is not needed.

3 files changed, 1 insertions, 11 deletions

diff --git a/Tests/CustomCommand/CMakeLists.txt b/Tests/CustomCommand/CMakeLists.txt
index 5ee05192b0..7e9f29c046 100644
--- a/Tests/CustomCommand/CMakeLists.txt
+++ b/Tests/CustomCommand/CMakeLists.txt
@@ -151,14 +151,6 @@ ADD_EXECUTABLE(CustomCommand
   ${PROJECT_BINARY_DIR}/generated.c
   ${PROJECT_BINARY_DIR}/not_included.h
   gen_redirect.c # default location for custom commands is in build tree
-  gen_once.c
-  )
-
-# Add a rule with no dependencies.
-ADD_CUSTOM_COMMAND(
-  OUTPUT gen_once.c
-  COMMAND ${CMAKE_COMMAND} -E copy ${PROJECT_SOURCE_DIR}/gen_once.c.in ${PROJECT_BINARY_DIR}/gen_once.c
-  SKIP_RULE_DEPENDS
   )
 
 # Add the rule to create generated.c at build time.  This is placed
diff --git a/Tests/CustomCommand/foo.in b/Tests/CustomCommand/foo.in
index c5ce3403f4..08c559df4d 100644
--- a/Tests/CustomCommand/foo.in
+++ b/Tests/CustomCommand/foo.in
@@ -6,11 +6,10 @@
 
 int generated();
 int wrapped();
-int gen_once(void);
 
 int main ()
 {
-  if (generated()*wrapped()*doc()*gen_once() == 3*5*7*11)
+  if (generated()*wrapped()*doc() == 3*5*7)
     {
     FILE* fin = fopen(PROJECT_BINARY_DIR "/not_included.h", "r");
     if(fin)
diff --git a/Tests/CustomCommand/gen_once.c.in b/Tests/CustomCommand/gen_once.c.in
deleted file mode 100644
index dc8eb672d2..0000000000
--- a/Tests/CustomCommand/gen_once.c.in
+++ /dev/null
@@ -1 +0,0 @@
-int gen_once(void) { return 11; }