diff options
Diffstat (limited to 'libjava/classpath/lib/split-for-gcj.sh')
-rwxr-xr-x | libjava/classpath/lib/split-for-gcj.sh | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/libjava/classpath/lib/split-for-gcj.sh b/libjava/classpath/lib/split-for-gcj.sh new file mode 100755 index 000000000..4130d5664 --- /dev/null +++ b/libjava/classpath/lib/split-for-gcj.sh @@ -0,0 +1,56 @@ +#! /bin/sh + +# This script is used when compiling Classpath with gcj. The idea is +# to compile one package at a time, and only recompile packages when +# actually required. + +# We build java->class by package so we need to know what .java files +# correspond to what package. + +# We have a .stamp file for each package; this is the makefile target. +# We also have a .list file for each package, which lists all the +# input files in that package. + +# gen-classlist.sh makes a list of all the .java files we are going to compile. + +# This script generates Makefile.deps, which looks like this: +# +# java/awt/AWTUtilities.class: lists/java-awt.stamp +# lists/java-awt.list: /home/aph/gcc/gcc/libjava/classpath/gnu/java/awt/AWTUtilities.java +# java/awt/BitMaskExtent.class: lists/java-awt.stamp +# lists/java-awt.list: /home/aph/gcc/gcc/libjava/classpath/gnu/java/awt/BitMaskExtent.java +# java/awt/BitwiseXORComposite.class: lists/java-awt.stamp +# lists/java-awt.list: /home/aph/gcc/gcc/libjava/classpath/gnu/java/awt/BitwiseXORComposite.java + +echo "Splitting for gcj" +rm -f Makefile.dtmp > /dev/null 2>&1 +test -d lists || mkdir lists +# Much more efficient to do processing outside the loop... +# The first expression computes the .class file name. +# We only want the first three package components, and +# we want them separated by '-'; this is the remaining expressions. +sed -e 's, \(.*\)[.]java$, \1.java \1.class,' \ + -e 's,^\([^/ ]*\)/\([^/ ]*\) ,\1-\2 ,' \ + -e 's,^\([^/ ]*\)/\([^/ ]*\)/\([^/ ]*\) ,\1-\2-\3 ,' \ + -e 's,^\([^/ ]*\)/\([^/ ]*\)/\([^/ ]*\)/[^ ]* ,\1-\2-\3 ,' \ + classes.2 | +while read pkg dir file f2; do + list=lists/$pkg + echo "$dir/$file" >> ${list}.list.1 + + echo "$f2: ${list}.stamp" >> Makefile.dtmp + echo "${list}.list: $dir/$file" >> Makefile.dtmp +done + +# Only update a .list file if it changed. +for file in lists/*.list.1; do + real=`echo "$file" | sed -e 's/.1$//'` + if cmp -s $real $file; then + rm $file + else + mv $file $real + fi +done + +# If we were run we must update Makefile.deps. +mv Makefile.dtmp Makefile.deps |