commit 89aa2ce6d6de2b9200171bd3ecc97fe917f73d62
author Chad Rosier <mcrosier@apple.com> Tue Oct 30 21:42:09 2012 +0000
committer Chad Rosier <mcrosier@apple.com> Tue Oct 30 21:42:09 2012 +0000
tree 421a33d34545a82463b0ce75fe2a2cd78bf86d8e
parent c6abe9e0d94d82d566c716a1ab3c0fe6daadfb9c

[driver] Older versions of ld expect '-L<dir>' not '-L <dir>'.  In Xcode4 and
later, '-L <dir>' is allowed, but rewrite these in the driver as '-L<dir>' to
maintain backward compatibility.  The same is true for the -I option.
rdar://12366753

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167054 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Driver/Tools.cpp

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index d0cf1ca..7c48d6b 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -93,9 +93,15 @@
                              const char *ArgName,
                              const char *EnvVar) {
   const char *DirList = ::getenv(EnvVar);
+  bool CombinedArg = false;
+
   if (!DirList)
     return; // Nothing to do.
 
+  StringRef Name(ArgName);
+  if (Name.equals("-I") || Name.equals("-L"))
+    CombinedArg = true;
+
   StringRef Dirs(DirList);
   if (Dirs.empty()) // Empty string should not add '.'.
     return;
@@ -103,21 +109,37 @@
   StringRef::size_type Delim;
   while ((Delim = Dirs.find(llvm::sys::PathSeparator)) != StringRef::npos) {
     if (Delim == 0) { // Leading colon.
-      CmdArgs.push_back(ArgName);
-      CmdArgs.push_back(".");
+      if (CombinedArg) {
+        CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
+      } else {
+        CmdArgs.push_back(ArgName);
+        CmdArgs.push_back(".");
+      }
     } else {
-      CmdArgs.push_back(ArgName);
-      CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
+      if (CombinedArg) {
+        CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));
+      } else {
+        CmdArgs.push_back(ArgName);
+        CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
+      }
     }
     Dirs = Dirs.substr(Delim + 1);
   }
 
   if (Dirs.empty()) { // Trailing colon.
-    CmdArgs.push_back(ArgName);
-    CmdArgs.push_back(".");
+    if (CombinedArg) {
+      CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
+    } else {
+      CmdArgs.push_back(ArgName);
+      CmdArgs.push_back(".");
+    }
   } else { // Add the last path.
-    CmdArgs.push_back(ArgName);
-    CmdArgs.push_back(Args.MakeArgString(Dirs));
+    if (CombinedArg) {
+      CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));
+    } else {
+      CmdArgs.push_back(ArgName);
+      CmdArgs.push_back(Args.MakeArgString(Dirs));
+    }
   }
 }
 

test/Driver/cpath.c

diff --git a/test/Driver/cpath.c b/test/Driver/cpath.c
index bd7c8d0..ea6ba49 100644
--- a/test/Driver/cpath.c
+++ b/test/Driver/cpath.c
@@ -1,8 +1,8 @@
 // RUN: mkdir -p %T/test1 %T/test2 %T/test3
 
 // RUN: env "CPATH=%T/test1%{pathsep}%T/test2" %clang -x c -E -v %s 2>&1 | FileCheck %s -check-prefix=CPATH
-// CPATH: -I {{.*}}/test1
-// CPATH: -I {{.*}}/test2
+// CPATH: -I{{.*}}/test1
+// CPATH: -I{{.*}}/test2
 // CPATH: search starts here
 // CPATH: test1
 // CPATH: test2

test/Driver/linker-opts.c

diff --git a/test/Driver/linker-opts.c b/test/Driver/linker-opts.c
index 85e180c..2a96a17 100644
--- a/test/Driver/linker-opts.c
+++ b/test/Driver/linker-opts.c
@@ -1,5 +1,5 @@
 // RUN: env LIBRARY_PATH=%T/test1 %clang -x c %s -### 2>&1 | FileCheck %s
-// CHECK: "-L" "{{.*}}/test1"
+// CHECK: "-L{{.*}}/test1"
 
 // GCC driver is used as linker on cygming. It should be aware of LIBRARY_PATH.
 // XFAIL: cygwin,mingw32,win32