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72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
//===-- programs.cpp ------------------------------------------------------===//
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//
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// LDC – the LLVM D compiler
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//
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// This file is distributed under the BSD-style LDC license. See the LICENSE
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// file for details.
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//
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//===----------------------------------------------------------------------===//
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#include "gen/programs.h"
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#include "mars.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Program.h"
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using namespace llvm;
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static cl::opt<std::string>
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gcc("gcc", cl::desc("GCC to use for assembling and linking"), cl::Hidden,
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cl::ZeroOrMore);
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static cl::opt<std::string> ar("ar", cl::desc("Archiver"), cl::Hidden,
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cl::ZeroOrMore);
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static std::string findProgramByName(const std::string &name) {
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#if LDC_LLVM_VER >= 306
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llvm::ErrorOr<std::string> res = llvm::sys::findProgramByName(name);
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return res ? res.get() : std::string();
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#else
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return llvm::sys::FindProgramByName(name);
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#endif
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}
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static std::string getProgram(const char *name, const cl::opt<std::string> *opt,
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const char *envVar = nullptr) {
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std::string path;
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const char *prog = nullptr;
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if (opt && opt->getNumOccurrences() > 0 && opt->length() > 0 &&
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(prog = opt->c_str())) {
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path = findProgramByName(prog);
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}
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if (path.empty() && envVar && (prog = getenv(envVar)) && prog[0] != '\0') {
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path = findProgramByName(prog);
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}
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if (path.empty()) {
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path = findProgramByName(name);
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}
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if (path.empty()) {
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error(Loc(), "failed to locate %s", name);
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fatal();
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}
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return path;
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}
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std::string getProgram(const char *name, const char *envVar) {
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return getProgram(name, nullptr, envVar);
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}
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std::string getGcc() {
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#if defined(__FreeBSD__) && __FreeBSD__ >= 10
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// Default compiler on FreeBSD 10 is clang
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return getProgram("clang", &gcc, "CC");
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#else
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return getProgram("gcc", &gcc, "CC");
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#endif
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}
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std::string getArchiver() { return getProgram("ar", &ar); }
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