build: Add the Android NDK build-system.

* guix/build-system/android-ndk.scm: New file.
* guix/build/android-ndk-build-system.scm: New file.
* Makefile.am: Add them.

1 files changed, 86 insertions, 0 deletions

diff --git a/guix/build/android-ndk-build-system.scm b/guix/build/android-ndk-build-system.scm
new file mode 100644
index 0000000000..b5d4b36d30
--- /dev/null
+++ b/guix/build/android-ndk-build-system.scm
@@ -0,0 +1,86 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2018 Danny Milosavljevic <dannym@scratchpost.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 (guix build android-ndk-build-system)
+  #:use-module ((guix build gnu-build-system) #:prefix gnu:)
+  #:use-module (guix build syscalls)
+  #:use-module (guix build utils)
+  #:use-module (ice-9 popen)
+  #:use-module (ice-9 rdelim)
+  #:use-module (ice-9 ftw)
+  #:use-module (ice-9 format)
+  #:use-module (ice-9 match)
+  #:use-module (rnrs io ports)
+  #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-26)
+  #:export (%standard-phases
+            android-ndk-build))
+
+;; Commentary:
+;;
+;; Builder-side code of the Android NDK build system.
+;;
+;; Code:
+
+(define* (configure #:key inputs outputs #:allow-other-keys)
+  (let ((library-directories (filter-map (match-lambda
+                                          ((name . path)
+                                           (if (eq? 'directory (stat:type (stat path)))
+                                               path
+                                               #f)))
+                                         inputs)))
+    (setenv "CC" "gcc")
+    (setenv "CXX" "g++")
+    (setenv "CPPFLAGS"
+     (string-join
+      (map (cut string-append "-I " <> "/include") library-directories)
+      " "))
+    (setenv "LDFLAGS"
+     (string-append "-L . "
+                    (string-join
+                     (map (lambda (x)
+                            (string-append "-L " x "/lib" " -Wl,-rpath=" x "/lib"))
+                          library-directories)
+                     " ")))
+    #t))
+
+(define* (install #:key inputs outputs (make-flags '()) #:allow-other-keys)
+  (let ((out (assoc-ref outputs "out")))
+    (apply invoke "make" "install"
+           (string-append "prefix=" out)
+           make-flags)
+    (if (file-exists? "include")
+        (copy-recursively "include" (string-append out "/include")))
+    #t))
+
+(define* (check #:key inputs outputs tests? (make-flags '()) #:allow-other-keys)
+  ;; TODO: Also handle root-level tests.
+  (when (and (file-exists? "tests") tests?)
+    (with-directory-excursion "tests"
+      (apply invoke "make" "check" make-flags))))
+
+(define %standard-phases
+  (modify-phases gnu:%standard-phases
+    (replace 'configure configure)
+    (replace 'install install)
+    (replace 'check check)))
+
+(define* (android-ndk-build #:key inputs (phases %standard-phases)
+                            #:allow-other-keys #:rest args)
+  "Build the given Android NDK package, applying all of PHASES in order."
+  (apply gnu:gnu-build #:inputs inputs #:phases phases args))