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84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
#include "driver/cpreprocessor.h"
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#include "dmd/errors.h"
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#include "driver/cl_options.h"
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#include "driver/tool.h"
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namespace {
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const char *getPathToImportc_h(const Loc &loc) {
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// importc.h should be next to object.d
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static const char *cached = nullptr;
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if (!cached) {
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cached = FileName::searchPath(global.path, "importc.h", false);
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if (!cached) {
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error(loc, "cannot find \"importc.h\" along import path");
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fatal();
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}
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}
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return cached;
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}
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} // anonymous namespace
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FileName runCPreprocessor(FileName csrcfile, const Loc &loc, bool &ifile,
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OutBuffer &defines) {
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const char *importc_h = getPathToImportc_h(loc);
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const char *ifilename = FileName::forceExt(csrcfile.toChars(), i_ext.ptr);
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const auto &triple = *global.params.targetTriple;
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const bool isMSVC = triple.isWindowsMSVCEnvironment();
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#if 0 //ifdef _WIN32
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// TODO: INCLUDE env var etc.?
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windows::MsvcEnvironmentScope msvcEnv;
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if (isMSVC)
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msvcEnv.setup();
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#endif
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const std::string cc = getGcc(isMSVC ? "cl.exe" : "cc");
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std::vector<std::string> args;
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if (!isMSVC)
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appendTargetArgsForGcc(args);
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if (triple.isOSDarwin())
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args.push_back("-fno-blocks"); // disable blocks extension
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for (const auto &ccSwitch : opts::ccSwitches) {
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args.push_back(ccSwitch);
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}
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// TODO: -Xcpp switches?
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if (isMSVC) {
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args.push_back("/P"); // run preprocessor
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args.push_back("/Zc:preprocessor"); // use the new conforming preprocessor
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args.push_back("/PD"); // undocumented: print all macro definitions
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args.push_back("/nologo");
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args.push_back(csrcfile.toChars());
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args.push_back((llvm::Twine("/FI") + importc_h).str());
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// preprocessed output file
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args.push_back((llvm::Twine("/Fi") + ifilename).str());
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} else { // Posix
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// merge #define's with output:
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// https://gcc.gnu.org/onlinedocs/cpp/Invocation.html#index-dD
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args.push_back("-dD");
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// need to redefine some macros in importc.h
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args.push_back("-Wno-builtin-macro-redefined");
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args.push_back("-E"); // run preprocessor only
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args.push_back("-include");
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args.push_back(importc_h);
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args.push_back(csrcfile.toChars());
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args.push_back("-o");
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args.push_back(ifilename);
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}
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const int status = executeToolAndWait(loc, cc, args, global.params.verbose);
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if (status) {
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errorSupplemental(loc, "C preprocessor failed for file '%s'", csrcfile.toChars());
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fatal();
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}
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ifile = true;
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return FileName::create(ifilename);
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}
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