From c58c833be98c391007e895896c666ce7f90547b3 Mon Sep 17 00:00:00 2001
From: David Nadlinger <code@klickverbot.at>
Date: Wed, 2 Oct 2013 18:02:41 +0200
Subject: [PATCH 1/2] Trivial indentation fix.

---
 driver/ldmd.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/driver/ldmd.cpp b/driver/ldmd.cpp
index 34d94e6f70..26c665ad73 100644
--- a/driver/ldmd.cpp
+++ b/driver/ldmd.cpp
@@ -939,7 +939,7 @@ void buildCommandLine(std::vector<const char*>& r, const Params& p)
 }
 
 /**
-  * Returns the OS-dependent length limit for the command line when invoking
+ * Returns the OS-dependent length limit for the command line when invoking
  * subprocesses.
  */
 size_t maxCommandLineLen()

From 7f20de16cf30ab4cae6b30e5aa4f30ffb3054ce2 Mon Sep 17 00:00:00 2001
From: David Nadlinger <code@klickverbot.at>
Date: Wed, 2 Oct 2013 18:09:47 +0200
Subject: [PATCH 2/2] LDMD: Create output directories if they do not exist.

There might be other cases using the LLVM output code as well
that I haven't handled here, but the changes are sufficient to
make LDC work with rdmd on Linux.

GitHub: Fixes #480.
---
 driver/ldmd.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/driver/ldmd.cpp b/driver/ldmd.cpp
index 26c665ad73..d3edbce5cd 100644
--- a/driver/ldmd.cpp
+++ b/driver/ldmd.cpp
@@ -977,6 +977,15 @@ std::string locateBinary(std::string exeName, const char* argv0)
     return "";
 }
 
+/**
+ * Makes sure the given directory (absolute or relative) exists on disk.
+ */
+static void createOutputDir(const char* dir) {
+    bool dirExisted; // ignored
+    if (ls::fs::create_directories(dir, dirExisted) != llvm::errc::success)
+        error("Could not create output directory '%s'.", dir);
+}
+
 static size_t addStrlen(size_t acc, const char* str)
 {
     if (!str) return acc;
@@ -1007,6 +1016,19 @@ int main(int argc, char *argv[])
 
     args.push_back(NULL);
 
+    // On Linux, DMD creates output directores that don't already exist, while
+    // LDC does not (and neither does GDC). Do this here for rdmd compatibility.
+    if (p.objName)
+    {
+        llvm::SmallString<256> outputPath(p.objName);
+        ls::path::remove_filename(outputPath);
+        if (!outputPath.empty())
+            createOutputDir(outputPath.c_str());
+    }
+
+    if (p.objDir)
+        createOutputDir(p.objDir);
+
     // Check if we need to write out a response file.
     size_t totalLen = std::accumulate(args.begin(), args.end(), 0, addStrlen);
     if (totalLen > maxCommandLineLen())