Source sweep: Use cmIsOn instead of cmSystemTools::IsOn

This replaces invocations of

- `cmSystemTools::IsInternallyOn` with `cmIsInternallyOn`
- `cmSystemTools::IsNOTFOUND` with `cmIsNOTFOUND`
- `cmSystemTools::IsOn` with `cmIsOn`
- `cmSystemTools::IsOff` with `cmIsOff`

1 files changed, 3 insertions, 3 deletions

diff --git a/Source/cmLocalUnixMakefileGenerator3.cxx b/Source/cmLocalUnixMakefileGenerator3.cxx
index a08968201f..e0b6467c8a 100644
--- a/Source/cmLocalUnixMakefileGenerator3.cxx
+++ b/Source/cmLocalUnixMakefileGenerator3.cxx
@@ -853,7 +853,7 @@ void cmLocalUnixMakefileGenerator3::AppendRuleDepend(
   // it is specifically enabled by the user or project.
   const char* nodep =
     this->Makefile->GetDefinition("CMAKE_SKIP_RULE_DEPENDENCY");
-  if (!nodep || cmSystemTools::IsOff(nodep)) {
+  if (!nodep || cmIsOff(nodep)) {
     depends.emplace_back(ruleFileName);
   }
 }
@@ -1423,7 +1423,7 @@ bool cmLocalUnixMakefileGenerator3::ScanDependencies(
   if (haveDirectoryInfo) {
     // Test whether we need to force Unix paths.
     if (const char* force = mf->GetDefinition("CMAKE_FORCE_UNIX_PATHS")) {
-      if (!cmSystemTools::IsOff(force)) {
+      if (!cmIsOff(force)) {
         cmSystemTools::SetForceUnixPaths(true);
       }
     }
@@ -1689,7 +1689,7 @@ void cmLocalUnixMakefileGenerator3::WriteLocalAllRules(
   depends.clear();
   const char* noall =
     this->Makefile->GetDefinition("CMAKE_SKIP_INSTALL_ALL_DEPENDENCY");
-  if (!noall || cmSystemTools::IsOff(noall)) {
+  if (!noall || cmIsOff(noall)) {
     // Drive the build before installing.
     depends.emplace_back("all");
   } else if (regenerate) {