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jeremybenn |
#! /bin/sh
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# This script is used when compiling Classpath with gcj. The idea is
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# to compile one package at a time, and only recompile packages when
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# actually required.
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# We build java->class by package so we need to know what .java files
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# correspond to what package.
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# We have a .stamp file for each package; this is the makefile target.
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# We also have a .list file for each package, which lists all the
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# input files in that package.
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# gen-classlist.sh makes a list of all the .java files we are going to compile.
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# This script generates Makefile.deps, which looks like this:
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#
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# java/awt/AWTUtilities.class: lists/java-awt.stamp
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# lists/java-awt.list: /home/aph/gcc/gcc/libjava/classpath/gnu/java/awt/AWTUtilities.java
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# java/awt/BitMaskExtent.class: lists/java-awt.stamp
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# lists/java-awt.list: /home/aph/gcc/gcc/libjava/classpath/gnu/java/awt/BitMaskExtent.java
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# java/awt/BitwiseXORComposite.class: lists/java-awt.stamp
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# lists/java-awt.list: /home/aph/gcc/gcc/libjava/classpath/gnu/java/awt/BitwiseXORComposite.java
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echo "Splitting for gcj"
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rm -f Makefile.dtmp > /dev/null 2>&1
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test -d lists || mkdir lists
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# Much more efficient to do processing outside the loop...
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# The first expression computes the .class file name.
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# We only want the first three package components, and
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# we want them separated by '-'; this is the remaining expressions.
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sed -e 's, \(.*\)[.]java$, \1.java \1.class,' \
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-e 's,^\([^/ ]*\)/\([^/ ]*\) ,\1-\2 ,' \
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-e 's,^\([^/ ]*\)/\([^/ ]*\)/\([^/ ]*\) ,\1-\2-\3 ,' \
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-e 's,^\([^/ ]*\)/\([^/ ]*\)/\([^/ ]*\)/[^ ]* ,\1-\2-\3 ,' \
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classes.2 |
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while read pkg dir file f2; do
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list=lists/$pkg
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echo "$dir/$file" >> ${list}.list.1
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echo "$f2: ${list}.stamp" >> Makefile.dtmp
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echo "${list}.list: $dir/$file" >> Makefile.dtmp
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done
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# Only update a .list file if it changed.
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for file in lists/*.list.1; do
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real=`echo "$file" | sed -e 's/.1$//'`
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if cmp -s $real $file; then
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rm $file
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else
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mv $file $real
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fi
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done
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# If we were run we must update Makefile.deps.
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mv Makefile.dtmp Makefile.deps
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