From d0570759f2a10f20ecee57a360b8afe2eb36f5d6 Mon Sep 17 00:00:00 2001
From: Manuel Canales Esparcia <manuel@linuxfromscratch.org>
Date: Sun, 9 Apr 2006 17:09:43 +0000
Subject: [PATCH] Added do_ica_prep code.

---
 extras/do_ica_prep | 66 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 64 insertions(+), 2 deletions(-)

diff --git a/extras/do_ica_prep b/extras/do_ica_prep
index 20637ac..10981f4 100755
--- a/extras/do_ica_prep
+++ b/extras/do_ica_prep
@@ -1,7 +1,69 @@
 #!/bin/bash
 # $Id$
+
+# Acknowledgment:
+#  The following code is a modified version of an original work written by
+#  Greg Schafer for the "DIY Linux" project and is included here with his
+#  permission.
+#  ref: http://www.diy-linux.org
+#
+
 set -e
 
-echo "This is a placeholder for now"
+  local CMP_DIR=$1
+  local F L BN
+  local ALL_FILES=/tmp/allfiles.$$
+  local UNIQUE_FILES=/tmp/uniquefiles.$$
+
+  # Run ica_prep if it hasn't been done already
+  if [ ! -f "$CMP_DIR/icaprep" ]; then
+
+    echo -n "Removing symbolic links in ${CMP_DIR}... "
+    find $CMP_DIR -type l | xargs rm -f
+    echo "done."
+
+    echo -n "Gunzipping \".gz\" files in ${CMP_DIR}... "
+    find $CMP_DIR -name '*.gz' | xargs gunzip
+    echo "done."
+
+    #echo -n "Bunzipping \".bz2\" files in ${CMP_DIR}... "
+    #find $CMP_DIR -name '*.bz2' | xargs bunzip2
+    #echo "done."
+
+    # ar archives contain date & time stamp info that causes us
+    # grief when trying to find differences. Here we perform some
+    # hackery to allow easy diffing. Essentially, replace each
+    # archive with a dir of the same name and extract the object
+    # files from the archive into this dir. Despite their names,
+    # libieee.a & libmcheck.a are not actual ar archives.
+    echo -n "Extracting object files from \".a\" files in ${CMP_DIR}... "
+    L=$(find $CMP_DIR -name '*.a' ! -name 'libieee.a' ! -name 'libmcheck.a')
+    for F in $L; do
+      mv $F ${F}.XX
+      mkdir $F
+      cd $F
+      BN=${F##*/}
+      ar x ../${BN}.XX || {
+      echo -e "\nError: ar archive extraction failed!\n" >&2
+      exit 1
+      }
+      rm -f ../${BN}.XX
+    done
+    echo "done."
+
+    echo -n "Stripping (debug) symbols from \".o\" files in ${CMP_DIR}... "
+    find $CMP_DIR -name '*.o' | xargs strip -p -g 2>/dev/null
+    echo "done."
+
+    echo -n "Stripping (all) symbols from files OTHER THAN \".o\" files in ${CMP_DIR}... "
+    find $CMP_DIR ! -name '*.o' | xargs strip -p 2>/dev/null || :
+    echo "done."
+
+    # We're all done
+    echo -en "\nSuccess: ICA preparation for "
+    echo -e "${CMP_DIR} complete.\n"
+    touch $CMP_DIR/icaprep
+  else
+   echo -e "\n$CMP_DIR was already processed\n"
+  fi
 
-exit