Fix a bug that -isysroot is completely ignored on Unix

-isysroot is the flag which set the system root directory.
This bug report https://bugs.llvm.org//show_bug.cgi?id=11503
shows that -isysroot is not handled at all on Unix, so fixed this bug.

After this diff, I could get this result https://pastebin.com/TeCmn9mj .

Differential Revision: https://reviews.llvm.org/D31495

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301998 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index d3ebf48315e232d2b93801726bf5ced9df6bc356..c69a7e649722d78e8b764ffa1c31a7b725c9a6b0 100644 (file)
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -1565,7 +1565,7 @@ static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
     frontend::IncludeDirGroup Group = frontend::System;
     if (A->getOption().matches(OPT_internal_externc_isystem))
       Group = frontend::ExternCSystem;
-    Opts.AddPath(A->getValue(), Group, false, true);
+    Opts.AddPath(A->getValue(), Group, false, false);
   }
 
   // Add the path prefixes which are implicitly treated as being system headers.

diff --git a/test/Driver/sysroot-flags.c b/test/Driver/sysroot-flags.c
index b0a10bfca442e945106f36a79d2902d629b50f7a..8149275d31cdcc039e5d38c1aba85079a1f931b4 100644 (file)
--- a/test/Driver/sysroot-flags.c
+++ b/test/Driver/sysroot-flags.c
@@ -26,3 +26,7 @@
 // RUN:   FileCheck %s -check-prefix=SYSROOT_SEPARATE
 // SYSROOT_SEPARATE: "-isysroot" "{{[^"]*}}/foo/bar"
 // SYSROOT_SEPARATE: "--sysroot{{" "|=}}{{[^"]*}}/foo/bar"
+
+// Check that -isysroot is handled properly
+// RUN: %clang -isysroot /foo/bar -c %s -v 2>&1 | \
+// RUN:   grep "/foo/bar"