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add support for the GCC -include option. 

llvm-svn: 45810
This commit is contained in:
Chris Lattner 2008-01-10 01:53:41 +00:00
parent 77133e6d30
commit 2cbf2f39ee
1 changed files with 21 additions and 2 deletions
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23
clang/Driver/clang.cpp
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@ -506,6 +506,11 @@ static llvm::cl::list<std::string>
U_macros("U", llvm::cl::value_desc("macro"), llvm::cl::Prefix,
llvm::cl::desc("Undefine the specified macro"));
static llvm::cl::list<std::string>
ImplicitIncludes("include", llvm::cl::value_desc("file"),
llvm::cl::desc("Include file before parsing"));
// Append a #define line to Buf for Macro. Macro should be of the form XXX,
// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit
// "#define XXX Y z W". To get a #define with no value, use "XXX=".
@ -526,6 +531,16 @@ static void DefineBuiltinMacro(std::vector<char> &Buf, const char *Macro,
Buf.push_back('\n');
}
/// AddImplicitInclude - Add an implicit #include of the specified file to the
/// predefines buffer.
static void AddImplicitInclude(std::vector<char> &Buf, const std::string &File){
const char *Inc = "#include \"";
Buf.insert(Buf.end(), Inc, Inc+strlen(Inc));
Buf.insert(Buf.end(), File.begin(), File.end());
Buf.push_back('"');
Buf.push_back('\n');
}
/// InitializePreprocessor - Initialize the preprocessor getting it and the
/// environment ready to process a single file. This returns the file ID for the
@ -562,7 +577,11 @@ static unsigned InitializePreprocessor(Preprocessor &PP,
for (unsigned i = 0, e = U_macros.size(); i != e; ++i)
DefineBuiltinMacro(PredefineBuffer, U_macros[i].c_str(), "#undef ");
// FIXME: Read any files specified by -imacros or -include.
// FIXME: Read any files specified by -imacros.
// Add implicit #includes from -include.
for (unsigned i = 0, e = ImplicitIncludes.size(); i != e; ++i)
AddImplicitInclude(PredefineBuffer, ImplicitIncludes[i]);
// Null terminate PredefinedBuffer and add it.
PredefineBuffer.push_back(0);
@ -583,7 +602,7 @@ static unsigned InitializePreprocessor(Preprocessor &PP,
// FIXME: -nostdinc,-nostdinc++
// FIXME: -imultilib
//
// FIXME: -include,-imacros
// FIXME: -imacros
static llvm::cl::opt<bool>
nostdinc("nostdinc", llvm::cl::desc("Disable standard #include directories"));