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, 3 insertions, 3 deletions

diff --git a/Source/cmFortranParserImpl.cxx b/Source/cmFortranParserImpl.cxx
index 81f1286..dd4f16b 100644
--- a/Source/cmFortranParserImpl.cxx
+++ b/Source/cmFortranParserImpl.cxx
@@ -17,14 +17,14 @@ bool cmFortranParser_s::FindIncludeFile(const char* dir,
   // If the file is a full path, include it directly.
   if (cmSystemTools::FileIsFullPath(includeName)) {
     fileName = includeName;
-    return cmSystemTools::FileExists(fileName.c_str(), true);
+    return cmSystemTools::FileExists(fileName, true);
   }
   // Check for the file in the directory containing the including
   // file.
   std::string fullName = dir;
   fullName += "/";
   fullName += includeName;
-  if (cmSystemTools::FileExists(fullName.c_str(), true)) {
+  if (cmSystemTools::FileExists(fullName, true)) {
     fileName = fullName;
     return true;
   }
@@ -34,7 +34,7 @@ bool cmFortranParser_s::FindIncludeFile(const char* dir,
     fullName = i;
     fullName += "/";
     fullName += includeName;
-    if (cmSystemTools::FileExists(fullName.c_str(), true)) {
+    if (cmSystemTools::FileExists(fullName, true)) {
       fileName = fullName;
       return true;
     }