* update libpng to 1.6.37

libpng/PKGBUILD

@@ -5,46 +5,51 @@
 # Contributor: Douglas Soares de Andrade <douglas@archlinux.org>
 
 pkgname=libpng
-pkgver=1.6.36
+pkgver=1.6.37
 _apngver=1.6.36
 pkgrel=1
 pkgdesc="A collection of routines used to create PNG format graphics files"
-arch=('x86_64' 'powerpc64le')
+arch=(x86_64 powerpc64le)
 url="http://www.libpng.org/pub/png/libpng.html"
 license=('custom')
 depends=('zlib' 'sh')
 validpgpkeys=('8048643BA2C840F4F92A195FF54984BFA16C640F') # Glenn Randers-Pehrson (mozilla) <glennrp@gmail.com>
 source=("https://downloads.sourceforge.net/sourceforge/$pkgname/$pkgname-$pkgver.tar.xz"
         "https://downloads.sourceforge.net/sourceforge/libpng-apng/libpng-$_apngver-apng.patch.gz")
-sha256sums=('eceb924c1fa6b79172fdfd008d335f0e59172a86a66481e09d4089df872aa319'
+sha256sums=('505e70834d35383537b6491e7ae8641f1a4bed1876dbfe361201fc80868d88ca'
             '8c1f33da739b29a77e35e5a1ebcdffaab63bfe184be8b5a97677cc80156fdc0f')
 
 prepare() {
   cd $pkgname-$pkgver
 
   # Add animated PNG (apng) support. Required by Firefox
   # see http://sourceforge.net/projects/libpng-apng/
-  zcat -d ../libpng-$_apngver-apng.patch.xz | patch -Np1 
+  patch -Np1 -i ../libpng-$_apngver-apng.patch
 }
 
 build() {
   cd $pkgname-$pkgver
 
-  ./configure --prefix=/usr --disable-static
+  ./configure \
+    --prefix=/usr \
+    --disable-static
   make
 }
 
 check() {
   cd $pkgname-$pkgver
+
   make check
 }
 
 package() {
   cd $pkgname-$pkgver
+
   make DESTDIR="$pkgdir" install
 
+  install -D -m0644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+
   cd contrib/pngminus
-  make PNGLIB="-L$pkgdir/usr/lib -lpng" -f makefile.std png2pnm pnm2png
-  install -m755 png2pnm pnm2png "$pkgdir/usr/bin/"
-  install -D -m644 ../../LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+  make PNGLIB_SHARED="-L$pkgdir/usr/lib -lpng" CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" png2pnm pnm2png
+  install -m0755 png2pnm pnm2png "$pkgdir/usr/bin/"
 }