File indexing completed on 2024-04-14 05:35:09
0001 #!/bin/sh 0002 # Helper for saving time when recompiling, skipping files that haven't 0003 # changed in a meaningful way (e.g. if you only change a comment...) 0004 # 0005 # LGPL v2, David Faure <david@mandrakesoft.com> 0006 0007 usage() 0008 { 0009 echo "Usage:" 0010 echo " $0 hidechange file Hides the fact that file was changed (use with care!)" 0011 echo " $0 show Lists what make currently has to rebuild" 0012 echo " $0 why file Explains why make must rebuild file" 0013 exit 1; 0014 } 0015 0016 if [ $# -eq 0 ]; then usage; fi 0017 CDPATH= 0018 builddir=$PWD 0019 0020 # 'srcdir != builddir' stuff 0021 if test ! -f Makefile && test -n "$OBJ_SUBDIR"; then 0022 builddir=$OBJ_SUBDIR 0023 else 0024 if test ! -f Makefile && test -n "$OBJ_REPLACEMENT"; then 0025 builddir=`pwd | sed -e "$OBJ_REPLACEMENT"` 0026 fi 0027 fi 0028 0029 if test ! -f Makefile && test -n "$OBJ_SUBDIR"; then 0030 builddir=$OBJ_SUBDIR 0031 fi 0032 cd $builddir 0033 srcdir=`egrep '^srcdir *=' Makefile | sed -e "s#srcdir *= *##"` 0034 UNSERMAKE=`type -p unsermake` 0035 using_unsermake= 0036 if head -n 1 Makefile | grep unsermake >/dev/null; then 0037 using_unsermake=new 0038 fi 0039 if head -n 1 Makefile | grep automake >/dev/null; then 0040 using_unsermake=old 0041 fi 0042 0043 0044 case $1 in 0045 hidechange ) 0046 if [ $# -ne 2 ]; then usage; fi 0047 ## TODO: unsermake support (or support in unsermake itself) 0048 deps=`make SUBDIRS='' -n | grep '\-o' | sed -e 's/.*-o \([^ ]*\).*/\1/'`; 0049 if [ -n "$deps" ]; then 0050 oldestdep=`ls -t $deps 2>/dev/null | tail -1` 0051 thefile=$2 0052 if [ -f $srcdir/$thefile ]; then 0053 thefile=$srcdir/$thefile 0054 fi 0055 echo 0056 echo "Setting date of $thefile back in time with:" 0057 echo "touch -r $oldestdep $thefile" ; touch -r $oldestdep $thefile 0058 fi 0059 ;; 0060 show ) 0061 if [ $# -ne 1 ]; then usage; fi 0062 if test "$using_unsermake" != "new"; then 0063 # Look at the commands that make will issue, and extract "-o output". 0064 # The only trouble, with libtool, is that this gives us .libs/foo.o instead of foo.lo 0065 make SUBDIRS='' -n | grep '\-o' | sed -e 's/.*-o \([^ ]*\).*/\1/' 0066 else 0067 # Solve the above problem (when using new-unsermake) by watching the "echo" lines for creating .lo files 0068 # separately from the rest of the "-o target" lines (for libs and binaries) 0069 # (For libs and bins another way would be to grep for "linking") 0070 # The "ls" is for sorting by date 0071 $UNSERMAKE -n | perl -e 'while(<>) { if (/by libtool/) { s/.*> //; print; } if (m/-o ([^ ]*)/ && $1!~/\.o$/) { print "$1\n"; } }' | xargs -r ls -t -1 0072 fi 0073 ;; 0074 why ) 0075 if [ $# -ne 2 ]; then usage; fi 0076 ## TODO: unsermake support (or support in unsermake itself) 0077 make SUBDIRS='' -n -d $2 | egrep -e "(newer than target \`$2'|Must)" 0078 ;; 0079 * ) usage ;; 0080 esac