From afcde3dfd621d9845c6de8935583c2e0cd9ee211 Mon Sep 17 00:00:00 2001
From: Kyle Schwarz <zeranoe@gmail.com>
Date: Sat, 7 Apr 2018 22:24:33 -0400
Subject: Simplify archive extraction

tar -xf <file> without the archive type is widely supported and simplifies the extraction command.

The xz program is not actually required to extract an xz archives with tar -xf.
---
 mingw-w64-build | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/mingw-w64-build b/mingw-w64-build
index d7fad6d..90689c2 100755
--- a/mingw-w64-build
+++ b/mingw-w64-build
@@ -95,16 +95,10 @@ download_sources()
 
   for url in "${urls[@]}"; do
     local archive="${url##*/}"
-    local c
     echo "downloading $archive" >&3
     curl -O "$url" || error_exit
     echo "extracting $archive" >&3
-    case "${archive##*.}" in
-      gz) c=z ;;
-      bz2) c=j ;;
-      xz) c=J ;;
-    esac
-    tar -x${c}f "$archive" || error_exit
+    tar -xf "$archive" || error_exit
   done
 
   cd "$src/gcc-$v_gcc" || error_exit
@@ -227,7 +221,6 @@ progs=(
   "curl"
   "gzip"
   "bzip2"
-  "xz"
   "git"
   "make"
   "patch"
-- 
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