flex: Update to 2.6.4

flex/PKGBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Alexey Pavlov <alexpux@gmail.com>
 
 pkgname=flex
-pkgver=2.6.3
+pkgver=2.6.4
 pkgrel=1
 pkgdesc="A tool for generating text-scanning programs"
 arch=('i686' 'x86_64')
@@ -12,9 +12,9 @@ depends=('m4' 'sh' 'libiconv' 'libintl')
 makedepends=('libiconv-devel' 'gettext-devel')
 options=('staticlibs')
 install=flex.install
-source=(https://github.com/westes/flex/releases/download/v${pkgver}/${pkgname}-${pkgver}.tar.lz
+source=(https://github.com/westes/flex/releases/download/v${pkgver}/${pkgname}-${pkgver}.tar.gz
         flex-2.5.38-msys2.patch)
-sha256sums=('907eeec6db1af86a26921888c2912e5d68ac5499ce5727d7b850a666ae209326'
+sha256sums=('e87aae032bf07c26f85ac0ed3250998c37621d95f8bd748b31f15b33c45ee995'
             '6ffcb831faa9c29c44b717825744887ea5b3945605153831339e0b8a37cbe5c3')
 
 prepare() {
@@ -51,8 +51,12 @@ package() {
   cd ${srcdir}/${pkgname}-${pkgver}
 
   make DESTDIR=${pkgdir} install
-  cp -f ${pkgdir}/usr/bin/flex.exe ${pkgdir}/usr/bin/flex++.exe
-  cp -f ${pkgdir}/usr/bin/flex.exe ${pkgdir}/usr/bin/lex.exe
+  if [ ! -f ${pkgdir}/usr/bin/flex++.exe ]; then
+	cp -f ${pkgdir}/usr/bin/flex.exe ${pkgdir}/usr/bin/flex++.exe
+  fi
+  if [ ! -f ${pkgdir}/usr/bin/lex.exe ]; then
+	cp -f ${pkgdir}/usr/bin/flex.exe ${pkgdir}/usr/bin/lex.exe
+  fi
 
   install -Dm644 COPYING ${pkgdir}/usr/share/licenses/${pkgdir}/license.txt
 }