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[Driver] Search the toolchain dir with -print-file-name 

This is useful when looking for directories or files relative to the
toolchain root, e.g. include/c++/v1. This change also adds a test
to make sure this functionality doesn't regress in the future.

Differential Revision: https://reviews.llvm.org/D62558

llvm-svn: 361903
This commit is contained in:
Petr Hosek 2019-05-29 00:01:05 +00:00
parent 26212da555
commit 92d706eaca
2 changed files with 24 additions and 0 deletions
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5
clang/lib/Driver/Driver.cpp
View File

@ -4437,6 +4437,11 @@ std::string Driver::GetFilePath(StringRef Name, const ToolChain &TC) const {
if (llvm::sys::fs::exists(Twine(P)))
return P.str();
SmallString<128> D(Dir);
llvm::sys::path::append(D, "..", Name);
if (llvm::sys::fs::exists(Twine(D)))
return D.str();
if (auto P = SearchPaths(TC.getLibraryPaths()))
return *P;

19
clang/test/Driver/print-file-name.c Normal file
View File

@ -0,0 +1,19 @@
// Test that -print-file-name finds the correct file.
// RUN: %clang -print-file-name=share/asan_blacklist.txt 2>&1 \
// RUN: -resource-dir=%S/Inputs/resource_dir \
// RUN: --target=x86_64-linux-gnu \
// RUN: | FileCheck --check-prefix=CHECK-RESOURCE-DIR %s
// CHECK-RESOURCE-DIR: resource_dir{{/|\\\\}}share{{/|\\\\}}asan_blacklist.txt
// RUN: %clang -print-file-name=libclang_rt.builtins.a 2>&1 \
// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
// RUN: --target=x86_64-linux-gnu \
// RUN: | FileCheck --check-prefix=CHECK-COMPILER-RT %s
// CHECK-COMPILER-RT: resource_dir_with_per_target_subdir{{/|\\\\}}lib{{/|\\\\}}x86_64-linux-gnu{{/|\\\\}}libclang_rt.builtins.a
// RUN: %clang -print-file-name=include/c++/v1 2>&1 \
// RUN: -ccc-install-dir %S/Inputs/basic_linux_libcxx_tree/usr/bin \
// RUN: --target=x86_64-linux-gnu \
// RUN: | FileCheck --check-prefix=CHECK-INSTALL-DIR %s
// CHECK-INSTALL-DIR: basic_linux_libcxx_tree{{/|\\\\}}usr{{/|\\\\}}bin{{/|\\\\}}..{{/|\\\\}}include{{/|\\\\}}c++{{/|\\\\}}v1