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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages llvm)
+ #:use-module (guix packages)
+ #:use-module (guix licenses)
+ #:use-module (guix download)
+ #:use-module (guix utils)
+ #:use-module (guix build-system gnu)
+ #:use-module (guix build-system cmake)
+ #:use-module (gnu packages)
+ #:use-module (gnu packages perl)
+ #:use-module (gnu packages python)
+ #:use-module (gnu packages xml))
+
+(define-public llvm
+ (package
+ (name "llvm")
+ (version "3.5.0")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (string-append "http://llvm.org/releases/"
+ version "/llvm-" version ".src.tar.xz"))
+ (sha256
+ (base32
+ "00swb43mzlvda8306arlg2jw7g6k3acwfccgf1k4c2pgd3rrkq98"))))
+ (build-system cmake-build-system)
+ (native-inputs
+ `(("python" ,python-wrapper)
+ ("perl" ,perl)))
+ (arguments
+ `(#:phases (alist-cons-before
+ 'build 'link-lib-for-build-exec
+ (lambda* (#:key outputs #:allow-other-keys)
+ ;; This is a hacky fix that will allow binaries to run
+ ;; before being installed. -DCMAKE_SKIP_BUILD_RPATH=FALSE
+ ;; seems to not help. Nixpkgs does the same.
+ (let* ((out (assoc-ref outputs "out"))
+ (out-lib (string-append out "/lib"))
+ (build-lib (string-append (getcwd) "/lib")))
+ (mkdir-p out)
+ (symlink build-lib out-lib)))
+ (alist-cons-after
+ 'build 'cleanup-out
+ (lambda* (#:key outputs #:allow-other-keys)
+ ;; Cleanup the symlink that was created previously. Let
+ ;; the install phase repopulate out.
+ (delete-file-recursively (assoc-ref outputs "out")))
+ %standard-phases))))
+ (home-page "http://www.llvm.org")
+ (synopsis "Optimizing compiler infrastructure")
+ (description
+ "LLVM is a compiler infrastructure designed for compile-time, link-time, runtime,
+and idle-time optimization of programs from arbitrary programming languages.
+It currently supports compilation of C and C++ programs, using front-ends
+derived from GCC 4.0.1. A new front-end for the C family of languages is in
+development. The compiler infrastructure includes mirror sets of programming
+tools as well as libraries with equivalent functionality.")
+ (license ncsa)))
+
+(define-public clang
+ (package
+ (name "clang")
+ (version (package-version llvm))
+ (source
+ (origin
+ (method url-fetch)
+ (uri (string-append "http://llvm.org/releases/"
+ version "/cfe-" version ".src.tar.xz"))
+ (sha256
+ (base32
+ "12yv3jwdjcbkrx7zjm8wh4jrvb59v8fdw4mnmz3zc1jb00p9k07w"))))
+ ;; Using cmake allows us to treat llvm as an external library. There
+ ;; doesn't seem to be any way to do this with clang's autotools-based
+ ;; build system.
+ (build-system cmake-build-system)
+ (native-inputs (package-native-inputs llvm))
+ (inputs
+ `(("libxml2" ,libxml2)
+ ,@(package-inputs llvm)))
+ (propagated-inputs
+ `(("llvm" ,llvm)))
+ (arguments `(#:configure-flags '("-DCLANG_INCLUDE_TESTS=True")))
+ (home-page "http://clang.llvm.org")
+ (synopsis "C language family frontend for LLVM")
+ (description
+ "Clang is a compiler front end for the C, C++, Objective-C and
+Objective-C++ programming languages. It uses LLVM as its back end. The Clang
+project includes the Clang front end, the Clang static analyzer, and several
+code analysis tools.")
+ (license ncsa)))