Add PKGBUILD for libarmmem. Optimized memX functions for ARMv6.

aur/arm-mem-git/LICENSE

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+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+

aur/arm-mem-git/PKGBUILD

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+# Maintainer: Jesse Jaara <gmail.com: jesse.jaara>
+
+pkgname=arm-mem-git
+pkgver=10.8a1fbee
+pkgrel=2
+pkgdesc="ARM-accelerated versions of selected functions from string.h"
+arch=('armv6h')
+buildarch=16
+url="https://github.com/bavison/arm-mem"
+license=('BSD')
+makedepends=('git')
+conflicts=('libcofi_rpi-git')
+provides=('libcofi_rpi-git')
+install=arm-mem.install
+source=('arm-mem::git://github.com/bavison/arm-mem.git'
+        'LICENSE')
+
+pkgver() {
+  cd "${srcdir}/arm-mem"
+  echo $(git rev-list --count HEAD).$(git rev-parse --short HEAD)
+}
+
+build() {
+  cd "${srcdir}/arm-mem"
+
+  make
+}
+
+package() {
+  cd "${srcdir}/arm-mem"
+
+  mkdir -p "${pkgdir}/"{etc/profile.d,usr/lib,usr/share/licenses/arm-mem-git}
+
+  cp "${srcdir}/LICENSE" "${pkgdir}/usr/share/licenses/arm-mem-git/"
+  cp libarmmem.so "${pkgdir}/usr/lib/"
+}
+
+md5sums=('SKIP'
+         '28d63fe2467e38160c025156d21e4e91')

aur/arm-mem-git/arm-mem.install

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+post_install() {
+  echo "/usr/lib/libarmmem.so" >> /etc/ld.so.preload
+}
+
+post_upgrade() {
+  touch /etc/ld.so.preload
+  grep -q "/usr/lib/libarmmem.so" /etc/ld.so.preload
+  if [[ $? -ne 0 ]]; then
+    post_install
+  fi
+}
+
+pre_remove() {
+  sed '|/usr/lib/libarmmem.so|d' -i /etc/ld.so.preload
+}
+