Reduce raw string pointers usage.

* Change some functions to take `std::string` instead of
  `const char*` in the following classes: `cmMakeFile`, `cmake`,
  `cmCoreTryCompile`, `cmSystemTools`,  `cmState`, `cmLocalGenerator`
  and a few others.
* Greatly reduce using of `const char*` overloads for
  `cmSystemTools::MakeDirectory` and `cmSystemTools::RelativePath`.
* Remove many redundant `c_str()` conversions throughout the code.

1 files changed, 1 insertions, 1 deletions

diff --git a/Source/cmRemoveDefinitionsCommand.cxx b/Source/cmRemoveDefinitionsCommand.cxx
index 8311b4b2fd..8d3f6889ec 100644
--- a/Source/cmRemoveDefinitionsCommand.cxx
+++ b/Source/cmRemoveDefinitionsCommand.cxx
@@ -16,7 +16,7 @@ bool cmRemoveDefinitionsCommand::InitialPass(
   }
 
   for (std::string const& i : args) {
-    this->Makefile->RemoveDefineFlag(i.c_str());
+    this->Makefile->RemoveDefineFlag(i);
   }
   return true;
 }