Added Uninstaller

[ghc-hetmet.git] / distrib / MacOS / installer-scripts / Uninstaller

diff --git a/distrib/MacOS/installer-scripts/Uninstaller b/distrib/MacOS/installer-scripts/Uninstaller
new file mode 100644 (file)
index 0000000..6ad00d3
--- /dev/null
+++ b/distrib/MacOS/installer-scripts/Uninstaller
@@ -0,0 +1,62 @@
+#!/bin/sh
+
+# Uninstaller script for GHC.framework 
+# (currently only for system volume installations)
+
+INSTALL_DEST=/Library/Frameworks
+INSTALL_BASE=/
+if [ ${INSTALL_BASE} = / ]; then
+  INSTALL_BIN=/usr/bin
+else
+  INSTALL_BIN=${INSTALL_BASE}/bin
+fi
+
+if [ ! -x ${INSTALL_DEST}/GHC.framework ]; then
+  echo "${INSTALL_DEST}/GHC.framework does not exit"
+  exit 1
+fi
+
+if [ ${USER} != root ]; then
+  echo "GHC.framework installer must be run with admin privileges"
+  echo "Prefix command by 'sudo'"
+  exit 1
+fi
+
+VERSIONS=(`ls ${INSTALL_DEST}/GHC.framework/Versions`)
+NO_VERSIONS=${#VERSIONS[@]}
+
+if [ ${VERSIONS[${NO_VERSIONS}-1]} != Current ]; then
+  echo "Fatal error: last version should be Current"
+  echo "Found versions: ${VERSIONS[@]}"
+  exit 1
+fi
+CURRENT_PHYS=`cd /Library/Frameworks/GHC.framework/Versions/Current; pwd -P`
+CURRENT=`basename ${CURRENT_PHYS}`
+
+if [ ${NO_VERSIONS} -ne 2 ]; then
+  echo "Multiple versions of GHC.framework are currently installed."
+  echo "This uninstaller removes GHC.framework entirely and should only"
+  echo "be used if there is exactly one version."
+  echo
+  echo "To remove individual old versions, simply delete the directory"
+  echo "${INSTALL_DEST}/GHC.framework/Versions/VERSION_TO_REMOVE"
+  echo
+  echo "Found versions: ${VERSIONS[@]}(= ${CURRENT})"
+  exit 1
+fi
+
+echo "Removing symbolic links into GHC.framework"
+for thisfile in `ls ${INSTALL_BIN}`; do
+  if ls -l ${INSTALL_BIN}/${thisfile} | grep -q GHC.framework/Versions; then
+    rm -f ${INSTALL_BIN}/${thisfile}
+  fi
+done
+
+echo "Removing ${INSTALL_DEST}/GHC.framework"
+rm -rf ${INSTALL_DEST}/GHC.framework
+
+echo "Removing package recipts"
+rm -f /Library/Receipts/boms/org.haskell.glasgowHaskellCompiler.ghc.pkg.bom
+rm -f /Library/Receipts/boms/org.haskell.glasgowHaskellCompiler.uninstaller.pkg
+
+echo "${INSTALL_DEST}/GHC.framework has been purged!"