libjava/classpath/lib/split-for-gcj.sh

   1 #! /bin/sh
   2
   3 # This script is used when compiling Classpath with gcj.  The idea is
   4 # to compile one package at a time, and only recompile packages when
   5 # actually required.
   6
   7 # We build java->class by package so we need to know what .java files
   8 # correspond to what package.
   9
  10 # We have a .stamp file for each package; this is the makefile target.
  11 # We also have a .list file for each package, which lists all the
  12 # input files in that package.
  13
  14 # gen-classlist.sh makes a list of all the .java files we are going to compile.
  15
  16 # This script generates Makefile.deps, which looks like this:
  17 #
  18 # java/awt/AWTUtilities.class: lists/java-awt.stamp
  19 # lists/java-awt.list: /home/aph/gcc/gcc/libjava/classpath/gnu/java/awt/AWTUtilities.java
  20 # java/awt/BitMaskExtent.class: lists/java-awt.stamp
  21 # lists/java-awt.list: /home/aph/gcc/gcc/libjava/classpath/gnu/java/awt/BitMaskExtent.java
  22 # java/awt/BitwiseXORComposite.class: lists/java-awt.stamp
  23 # lists/java-awt.list: /home/aph/gcc/gcc/libjava/classpath/gnu/java/awt/BitwiseXORComposite.java
  24
  25 echo "Splitting for gcj"
  26 rm -f Makefile.dtmp > /dev/null 2>&1
  27 test -d lists || mkdir lists
  28 # Much more efficient to do processing outside the loop...
  29 # The first expression computes the .class file name.
  30 # We only want the first three package components, and
  31 # we want them separated by '-'; this is the remaining expressions.
  32 sed -e 's, \(.*\)[.]java$, \1.java \1.class,' \
  33    -e 's,^\([^/ ]*\)/\([^/ ]*\) ,\1-\2 ,' \
  34    -e 's,^\([^/ ]*\)/\([^/ ]*\)/\([^/ ]*\) ,\1-\2-\3 ,' \
  35    -e 's,^\([^/ ]*\)/\([^/ ]*\)/\([^/ ]*\)/[^ ]* ,\1-\2-\3 ,' \
  36    classes.2 |
  37 while read pkg dir file f2; do
  38    list=lists/$pkg
  39    echo "$dir/$file" >> ${list}.list.1
  40
  41    echo "$f2: ${list}.stamp" >> Makefile.dtmp
  42    echo "${list}.list: $dir/$file" >> Makefile.dtmp
  43 done
  44
  45 # Only update a .list file if it changed.
  46 for file in lists/*.list.1; do
  47    real=`echo "$file" | sed -e 's/.1$//'`
  48    if cmp -s $real $file; then
  49       rm $file
  50    else
  51       mv $file $real
  52    fi
  53 done
  54
  55 # If we were run we must update Makefile.deps.
  56 mv Makefile.dtmp Makefile.deps