test for features, not OSs

diff --git a/summon-arm-toolchain b/summon-arm-toolchain
index 4b901249e49cd735c74cc2a7768c62a1e190babd..f6826da7ac599c6bff11b6c194b078017927c517 100755 (executable)
--- a/summon-arm-toolchain
+++ b/summon-arm-toolchain
@@ -100,43 +100,27 @@ SOURCES=${SUMMON_DIR}/sources
 STAMPS=${SUMMON_DIR}/stamps
 
 
-##############################################################################
-# Tool section
-##############################################################################
-TAR=tar
-
 ##############################################################################
 # OS and Tooldetection section
 # Detects which tools and flags to use
 ##############################################################################
 
-case "$(uname)" in
-       Linux)
-       echo "Found Linux OS."
-       ;;
-       Darwin)
-       echo "Found Darwin OS."
-
-       # darwin dependencies
-       DARWINDEPS="wget"
-
-  echo "Installing dependencies ..."
-  if ! which brew > /dev/null; then
-    echo "Homebrew not installed."
-  else
-      brew install ${DARWINDEPS} | (grep -v '^Warning: Formula already installed: ' || true)
-  fi
+if ! which wget > /dev/null; then
+    echo "Please install wget"
+    exit 1
+fi
 
+if [ USE_LINARO = 1 ]; then
+    if which gnutar > /dev/null; then
         TAR=gnutar
-       ;;
-       CYGWIN*)
-       echo "Found CygWin that means Windows most likely."
-       ;;
-       *)
-       echo "Found unknown OS. Aborting!"
-       exit 1
-       ;;
-esac
+    elif which gtar > /dev/null; then
+        TAR=gtar
+    else    # hopefully it understands the GNU format
+        TAR=tar
+    fi
+else
+    TAR=tar     # use the system tar
+fi
 
 ##############################################################################
 # Building section