Trick 15.3.dev does not build with clang/llvm 4.0.0 libraries. #410

Added a missing header file and backported a variation of the
almostRealPath call from 17.

trick_source/codegen/Interface_Code_Gen/Utilities.cpp

@@ -68,6 +68,10 @@ std::string getFileName( clang::CompilerInstance & ci , clang::SourceLocation sl
 }
 
 #include <iostream>
+char * almostRealPath( const std::string& in_path ) {
+    return almostRealPath(in_path.c_str());
+}
+
 /*
    This function returns almost absolute path of the directory of the incoming path.
    It does not follow the last symbolic link.

trick_source/codegen/Interface_Code_Gen/Utilities.hh

@@ -11,6 +11,7 @@ std::string trim( const std::string& str, const std::string& whitespace = " \t\n
 bool isInUserCode( clang::CompilerInstance & ci , clang::SourceLocation sl , HeaderSearchDirs & hsd ) ;
 bool isInUserOrTrickCode( clang::CompilerInstance & ci , clang::SourceLocation sl , HeaderSearchDirs & hsd ) ;
 std::string getFileName( clang::CompilerInstance & ci , clang::SourceLocation sl , HeaderSearchDirs & hsd ) ;
+char * almostRealPath( const std::string& in_path ) ;
 char * almostRealPath( const char * in_path ) ;
 
 #endif

trick_source/codegen/Interface_Code_Gen/main.cpp

@@ -13,6 +13,7 @@
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Lex/Preprocessor.h"
+#include "clang/Lex/PreprocessorOptions.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Parse/ParseAST.h"