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05/11: gnu: Add ocaml-build-system.


From: David Craven
Subject: 05/11: gnu: Add ocaml-build-system.
Date: Wed, 4 Jan 2017 15:05:59 +0000 (UTC)

dvc pushed a commit to branch master
in repository guix.

commit e6876cb9dc2c90c731abd8fef2c01c1a4ba8f59f
Author: Julien Lepiller <address@hidden>
Date:   Thu Dec 22 19:56:33 2016 +0100

    gnu: Add ocaml-build-system.
    
    * guix/build/ocaml-build-system.scm: New file.
    * guix/build-system/ocaml.scm: New file.
    * Makefile.am (MODULES): Add them.
    * gnu/packages/ocaml.scm (ocaml)[native-search-paths]: Adjuste OCAMLPATH.
    
    Signed-off-by: David Craven <address@hidden>
---
 Makefile.am                       |    2 +
 gnu/packages/ocaml.scm            |    2 +-
 guix/build-system/ocaml.scm       |  181 +++++++++++++++++++++++++++++++++++++
 guix/build/ocaml-build-system.scm |  119 ++++++++++++++++++++++++
 4 files changed, 303 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index fb08a00..1a66fff 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -70,6 +70,7 @@ MODULES =                                     \
   guix/build-system/haskell.scm                        \
   guix/build-system/perl.scm                   \
   guix/build-system/python.scm                 \
+  guix/build-system/ocaml.scm                  \
   guix/build-system/waf.scm                    \
   guix/build-system/r.scm                      \
   guix/build-system/ruby.scm                   \
@@ -95,6 +96,7 @@ MODULES =                                     \
   guix/build/gnu-dist.scm                      \
   guix/build/perl-build-system.scm             \
   guix/build/python-build-system.scm           \
+  guix/build/ocaml-build-system.scm            \
   guix/build/r-build-system.scm                        \
   guix/build/ruby-build-system.scm             \
   guix/build/waf-build-system.scm              \
diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index 35c7824..88e95a8 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -71,7 +71,7 @@
     (native-search-paths
      (list (search-path-specification
             (variable "OCAMLPATH")
-            (files (list "lib/ocaml")))
+            (files (list "lib/ocaml" "lib/ocaml/site-lib")))
            (search-path-specification
             (variable "CAML_LD_LIBRARY_PATH")
             (files (list "lib/ocaml/site-lib/stubslibs")))))
diff --git a/guix/build-system/ocaml.scm b/guix/build-system/ocaml.scm
new file mode 100644
index 0000000..f4f57b5
--- /dev/null
+++ b/guix/build-system/ocaml.scm
@@ -0,0 +1,181 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016, 2017 Julien Lepiller <address@hidden>
+;;;
+;;; 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 (guix build-system ocaml)
+  #:use-module (guix store)
+  #:use-module (guix utils)
+  #:use-module (guix derivations)
+  #:use-module (guix search-paths)
+  #:use-module (guix build-system)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix packages)
+  #:use-module (ice-9 match)
+  #:export (%ocaml-build-system-modules
+            ocaml-build
+            ocaml-build-system))
+
+;; Commentary:
+;;
+;; Standard build procedure for packages using ocaml. This is implemented as an
+;; extension of `gnu-build-system'.
+;;
+;; OCaml packages don't use a single standard for their build system. Some use
+;; autotools, other use custom configure scripts with Makefiles, others use
+;; oasis to generate the configure script and Makefile and lastly, some use
+;; custom ocaml scripts.
+;;
+;; Each phase in the build system will try to figure out what the build system
+;; is for that package. Most packages come with a custom configure script and
+;; a Makefile that in turn call custom build tools. Packages built with oasis
+;; will have a `setup.ml' file in the top directory, that can be used for all
+;; phases. In that case the Makefile is here only to call that script. In case
+;; the setup.ml do not work as expected, the @var{use-make} argument can be
+;; used to ignore the setup.ml file and run make instead.
+;;
+;; Some packages use their own custom scripts, `pkg/pkg.ml' or
+;; `pkg/build.ml'. They can be used here too.
+;;
+;; Code:
+
+(define %ocaml-build-system-modules
+  ;; Build-side modules imported by default.
+  `((guix build ocaml-build-system)
+    ,@%gnu-build-system-modules))
+
+(define (default-ocaml)
+  "Return the default OCaml package."
+
+  ;; Do not use `@' to avoid introducing circular dependencies.
+  (let ((module (resolve-interface '(gnu packages ocaml))))
+    (module-ref module 'ocaml)))
+
+(define (default-findlib)
+  "Return the default OCaml-findlib package."
+
+  ;; Do not use `@' to avoid introducing circular dependencies.
+  (let ((module (resolve-interface '(gnu packages ocaml))))
+    (module-ref module 'ocaml-findlib)))
+
+(define* (lower name
+                #:key source inputs native-inputs outputs system target
+                (ocaml (default-ocaml))
+                (findlib (default-findlib))
+                #:allow-other-keys
+                #:rest arguments)
+  "Return a bag for NAME."
+  (define private-keywords
+    '(#:source #:target #:ocaml #:findlib #:inputs #:native-inputs))
+
+  (and (not target)                               ;XXX: no cross-compilation
+       (bag
+         (name name)
+         (system system)
+         (host-inputs `(,@(if source
+                              `(("source" ,source))
+                              '())
+                        ,@inputs
+
+                        ;; Keep the standard inputs of 'gnu-build-system'.
+                        ,@(standard-packages)))
+         (build-inputs `(("ocaml" ,ocaml)
+                         ("findlib" ,findlib)
+                         ,@native-inputs))
+         (outputs outputs)
+         (build ocaml-build)
+         (arguments (strip-keyword-arguments private-keywords arguments)))))
+
+(define* (ocaml-build store name inputs
+                      #:key (guile #f)
+                      (outputs '("out")) (configure-flags ''())
+                      (search-paths '())
+                      (make-flags ''())
+                      (build-flags ''())
+                      (out-of-source? #t)
+                      (use-make? #f)
+                      (tests? #t)
+                      (test-flags ''("--enable-tests"))
+                      (test-target "test")
+                      (install-target "install")
+                      (validate-runpath? #t)
+                      (patch-shebangs? #t)
+                      (strip-binaries? #t)
+                      (strip-flags ''("--strip-debug"))
+                      (strip-directories ''("lib" "lib64" "libexec"
+                                            "bin" "sbin"))
+                      (phases '(@ (guix build ocaml-build-system)
+                                  %standard-phases))
+                      (system (%current-system))
+                      (imported-modules %ocaml-build-system-modules)
+                      (modules '((guix build ocaml-build-system)
+                                 (guix build utils))))
+  "Build SOURCE using OCAML, and with INPUTS. This assumes that SOURCE
+provides a 'setup.ml' file as its build system."
+  (define builder
+    `(begin
+       (use-modules ,@modules)
+       (ocaml-build #:source ,(match (assoc-ref inputs "source")
+                                (((? derivation? source))
+                                 (derivation->output-path source))
+                                ((source)
+                                 source)
+                                (source
+                                 source))
+                    #:system ,system
+                    #:outputs %outputs
+                    #:inputs %build-inputs
+                    #:search-paths ',(map search-path-specification->sexp
+                                          search-paths)
+                    #:phases ,phases
+                    #:configure-flags ,configure-flags
+                    #:test-flags ,test-flags
+                    #:make-flags ,make-flags
+                    #:build-flags ,build-flags
+                    #:out-of-source? ,out-of-source?
+                    #:use-make? ,use-make?
+                    #:tests? ,tests?
+                    #:test-target ,test-target
+                    #:install-target ,install-target
+                    #:validate-runpath? ,validate-runpath?
+                    #:patch-shebangs? ,patch-shebangs?
+                    #:strip-binaries? ,strip-binaries?
+                    #:strip-flags ,strip-flags
+                    #:strip-directories ,strip-directories)))
+
+  (define guile-for-build
+    (match guile
+      ((? package?)
+       (package-derivation store guile system #:graft? #f))
+      (#f                                         ; the default
+       (let* ((distro (resolve-interface '(gnu packages commencement)))
+              (guile  (module-ref distro 'guile-final)))
+         (package-derivation store guile system #:graft? #f)))))
+
+  (build-expression->derivation store name builder
+                                #:system system
+                                #:inputs inputs
+                                #:modules imported-modules
+                                #:outputs outputs
+                                #:guile-for-build guile-for-build))
+
+(define ocaml-build-system
+  (build-system
+    (name 'ocaml)
+    (description "The standard OCaml build system")
+    (lower lower)))
+
+;;; ocaml.scm ends here
diff --git a/guix/build/ocaml-build-system.scm 
b/guix/build/ocaml-build-system.scm
new file mode 100644
index 0000000..f77251c
--- /dev/null
+++ b/guix/build/ocaml-build-system.scm
@@ -0,0 +1,119 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016, 2017 Julien Lepiller <address@hidden>
+;;;
+;;; 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 (guix build ocaml-build-system)
+  #:use-module ((guix build gnu-build-system) #:prefix gnu:)
+  #:use-module (guix build utils)
+  #:use-module (ice-9 match)
+  #:export (%standard-phases
+            ocaml-build))
+
+;; Commentary:
+;;
+;; Builder-side code of the standard ocaml build procedure.
+;;
+;; Code:
+
+(define* (ocaml-findlib-environment #:key outputs #:allow-other-keys)
+  (let* ((out (assoc-ref outputs "out")))
+    (setenv "OCAMLFIND_DESTDIR" (string-append out "/lib/ocaml/site-lib"))
+    (setenv "OCAMLFIND_LDCONF" "ignore"))
+  #t)
+
+(define* (configure #:key outputs (configure-flags '())
+                    (test-flags '("--enable-tests")) tests?
+                    #:allow-other-keys)
+  "Configure the given package."
+  (let* ((out        (assoc-ref outputs "out")))
+    (format #t "build directory: ~s~%" (getcwd))
+    (if (file-exists? "setup.ml")
+      (let ((args `("-configure"
+                    "--prefix" ,out
+                    ,@(if tests?
+                          test-flags
+                          '())
+                    ,@configure-flags)))
+        (format #t "running 'setup.ml' with arguments ~s~%" args)
+        (zero? (apply system* "ocaml" "setup.ml" args)))
+       (let ((args `("-prefix" ,out ,@configure-flags)))
+        (format #t "running 'configure' with arguments ~s~%" args)
+        (zero? (apply system* "./configure" args))))))
+
+(define* (build #:key inputs outputs (build-flags '()) (make-flags '())
+                (use-make? #f) #:allow-other-keys)
+  "Build the given package."
+  (if (and (file-exists? "setup.ml") (not use-make?))
+    (zero? (apply system* "ocaml" "setup.ml" "-build" build-flags))
+    (if (file-exists? "Makefile")
+      (zero? (apply system* "make" make-flags))
+      (let ((file (if (file-exists? "pkg/pkg.ml") "pkg/pkg.ml" 
"pkg/build.ml")))
+        (zero? (apply system* "ocaml" "-I"
+                              (string-append (assoc-ref inputs "findlib")
+                                             "/lib/ocaml/site-lib")
+                              file build-flags))))))
+
+(define* (check #:key inputs outputs (make-flags '()) (test-target "test") 
tests?
+                  (use-make? #f) #:allow-other-keys)
+  "Install the given package."
+  (when tests?
+    (if (and (file-exists? "setup.ml") (not use-make?))
+      (zero? (system* "ocaml" "setup.ml" (string-append "-" test-target)))
+      (if (file-exists? "Makefile")
+        (zero? (apply system* "make" test-target make-flags))
+        (let ((file (if (file-exists? "pkg/pkg.ml") "pkg/pkg.ml" 
"pkg/build.ml")))
+          (zero? (system* "ocaml" "-I"
+                          (string-append (assoc-ref inputs "findlib")
+                                         "/lib/ocaml/site-lib")
+                          file test-target)))))))
+
+(define* (install #:key outputs (build-flags '()) (make-flags '()) (use-make? 
#f)
+                  (install-target "install")
+                  #:allow-other-keys)
+  "Install the given package."
+  (let ((out (assoc-ref outputs "out")))
+    (if (and (file-exists? "setup.ml") (not use-make?))
+      (zero? (apply system* "ocaml" "setup.ml"
+                    (string-append "-" install-target) build-flags))
+      (if (file-exists? "Makefile")
+        (zero? (apply system* "make" install-target make-flags))
+        (zero? (system* "opam-installer" "-i" (string-append "--prefix=" out)
+                        (string-append "--libdir=" out 
"/lib/ocaml/site-lib")))))))
+
+(define* (prepare-install #:key outputs #:allow-other-keys)
+  "Prepare for building the given package."
+  (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ocaml/site-lib"))
+  (mkdir-p (string-append (assoc-ref outputs "out") "/bin")))
+
+(define %standard-phases
+  ;; Everything is as with the GNU Build System except for the `configure'
+  ;; , `build', `check' and `install' phases.
+  (modify-phases gnu:%standard-phases
+    (add-before 'configure 'ocaml-findlib-environment
+                ocaml-findlib-environment)
+    (add-before 'install 'prepare-install prepare-install)
+    (replace 'configure configure)
+    (replace 'build build)
+    (replace 'check check)
+    (replace 'install install)))
+
+(define* (ocaml-build #:key inputs (phases %standard-phases)
+                      #:allow-other-keys #:rest args)
+  "Build the given package, applying all of PHASES in order."
+  (apply gnu:gnu-build #:inputs inputs #:phases phases args))
+
+;;; ocaml-build-system.scm ends here



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