diff --git a/.gitignore b/.gitignore
index c9b8a4c..34447a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,4 +31,3 @@
 /ldc-0.17.4-src.tar.gz
 /ldc-1.3.0-src.tar.gz
 /ldc-1.4.0-src.tar.gz
-/ldc-1.5.0-src.tar.gz
diff --git a/0001-Adapt-embedded-llvm-ar-to-LLVM-5.0-final-2349.patch b/0001-Adapt-embedded-llvm-ar-to-LLVM-5.0-final-2349.patch
new file mode 100644
index 0000000..a2e2ff4
--- /dev/null
+++ b/0001-Adapt-embedded-llvm-ar-to-LLVM-5.0-final-2349.patch
@@ -0,0 +1,58 @@
+From e8bfc4d9876f09b2bf08420998a92a002f752edb Mon Sep 17 00:00:00 2001
+From: kinke <kinke@users.noreply.github.com>
+Date: Tue, 26 Sep 2017 20:04:39 +0200
+Subject: [PATCH] Adapt embedded llvm-ar to LLVM 5.0 final (#2349)
+
+---
+ driver/archiver.cpp | 14 +++++++++-----
+ 1 file changed, 9 insertions(+), 5 deletions(-)
+
+diff --git a/driver/archiver.cpp b/driver/archiver.cpp
+index 78cafc8..7893129 100644
+--- a/driver/archiver.cpp
++++ b/driver/archiver.cpp
+@@ -50,7 +50,7 @@ bool Symtab = true;
+ bool Deterministic = true;
+ bool Thin = false;
+ 
+-void fail(Twine Error) { outs() << "llvm-ar: " << Error << ".\n"; }
++void fail(Twine Error) { errs() << "llvm-ar: " << Error << ".\n"; }
+ 
+ void fail(std::error_code EC, std::string Context = {}) {
+   if (Context.empty())
+@@ -79,6 +79,12 @@ int addMember(std::vector<NewArchiveMember> &Members, StringRef FileName,
+     fail(std::move(Error), FileName);
+     return 1;
+   }
++
++#if LDC_LLVM_VER >= 500
++  // Use the basename of the object path for the member name.
++  NMOrErr->MemberName = sys::path::filename(NMOrErr->MemberName);
++#endif
++
+   if (Pos == -1)
+     Members.push_back(std::move(*NMOrErr));
+   else
+@@ -221,7 +227,7 @@ int performWriteOperation() {
+   auto Buf = MemoryBuffer::getFile(ArchiveName, -1, false);
+   std::error_code EC = Buf.getError();
+   if (EC && EC != errc::no_such_file_or_directory) {
+-    fail("error opening '" + ArchiveName + "': " + EC.message() + "!");
++    fail("error opening '" + ArchiveName + "': " + EC.message());
+     return 1;
+   }
+ 
+@@ -230,9 +236,7 @@ int performWriteOperation() {
+     object::Archive Archive(Buf.get()->getMemBufferRef(), Err);
+     EC = errorToErrorCode(std::move(Err));
+     if (EC) {
+-      fail(
+-          EC,
+-          ("error loading '" + ArchiveName + "': " + EC.message() + "!").str());
++      fail(EC, ("error loading '" + ArchiveName + "': " + EC.message()).str());
+       return 1;
+     }
+     return performWriteOperation(&Archive, std::move(Buf.get()));
+-- 
+1.8.3.1
+
diff --git a/ldc.spec b/ldc.spec
index e225303..a7e9804 100644
--- a/ldc.spec
+++ b/ldc.spec
@@ -1,21 +1,21 @@
 %global dmdfe_major 2
 %global dmdfe_minor 0
-%global dmdfe_bump  75
+%global dmdfe_bump  74
 %global dmdfe       %dmdfe_major.%dmdfe_minor.%dmdfe_bump
 
 #global pre beta2
 
 # Enable this for bootstrapping with an older version that doesn't require a
 # working D compiler to build itself
-%global bootstrap 1
+%global bootstrap 0
 %global bootstrap_version 0.17.4
 
 %undefine _hardened_build
 
 Name:           ldc
 Epoch:          1
-Version:        1.5.0
-Release:        1%{?pre:.%{pre}}%{?dist}
+Version:        1.4.0
+Release:        3%{?pre:.%{pre}}%{?dist}
 Summary:        A compiler for the D programming language
 
 # The DMD frontend in dmd/* GPL version 1 or artistic license
@@ -28,6 +28,8 @@ Source1:        https://github.com/ldc-developers/ldc/releases/download/v%{boots
 %endif
 Source3:        macros.%{name}
 
+Patch0:		0001-Adapt-embedded-llvm-ar-to-LLVM-5.0-final-2349.patch
+
 ExclusiveArch:  %{ldc_arches}
 
 %if ! 0%{?bootstrap}
@@ -151,6 +153,7 @@ Active l'autocompletion pour pour la bibliothèque phobos dans geany (IDE)
 
 %prep
 %setup -q -n %{name}-%{version}%{?pre:-%{pre}}-src
+%patch0 -p1
 # temp geany config directory for allow geany to generate tags
 mkdir geany_config
 
@@ -244,10 +247,6 @@ install -m0644 phobos.d.tags %{buildroot}/%{_datadir}/geany/tags/
 %{_datadir}/geany/tags/phobos.d.tags
 
 %changelog
-* Mon Oct 30 2017 Kalev Lember <klember@redhat.com> - 1:1.5.0-1
-- Update to 1.5.0
-- Enable bootstrap
-
 * Tue Sep 26 2017 Tom Stellard <tstellard@redhat.com> - 1:1.4.0-3
 - Fix build with LLVM 5.0
 
diff --git a/sources b/sources
index d6cc9c8..bf95086 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
 SHA512 (ldc-0.17.4-src.tar.gz) = d45abd1506387dca8d2eef6b5afe41b3015d362d09c7fc26c6ee861140d67690ee3db31cc06ca313ba39d5f75b9620db870410140e0dd78b9038361432b238ba
-SHA512 (ldc-1.5.0-src.tar.gz) = 3bf3ee7f42ea6c426af375aaa20b184585af25cb133da5278b35d6d5481831abcce627dcc9f63fe20682ce5a024645e987d03bf2e36faf4d08807e4edd861ac1
+SHA512 (ldc-1.4.0-src.tar.gz) = 68bd34323733a52f56f9542f542ce9391a588d46bbdb8b277b3a44caf8b2ed4c1721f1d2f9141a93e7569e25c6072a7e9aaf2f14f0172dd6b95c335bbc6815cb