#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects
-scriptversion=2012-02-03.15; # UTC
+scriptversion=2012-07-12.20; # UTC
-# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010,
-# 2011, 2012 Free Software Foundation, Inc.
+# Copyright (C) 1999-2012 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
depmode=msvc7
fi
+if test "$depmode" = xlc; then
+ # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency informations.
+ gccflag=-qmakedep=gcc,-MF
+ depmode=gcc
+fi
+
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
rm -f "$tmpdepfile"
;;
+xlc)
+ # This case exists only to let depend.m4 do its work. It works by
+ # looking at the text of this script. This case will never be run,
+ # since it is checked for above.
+ exit 1
+ ;;
+
aix)
# The C for AIX Compiler uses -M and outputs the dependencies
# in a .u file. In older versions, this file always lives in the
;;
icc)
- # Intel's C compiler understands '-MD -MF file'. However on
- # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
+ # Intel's C compiler anf tcc (Tiny C Compiler) understand '-MD -MF file'.
+ # However on
+ # $CC -MD -MF foo.d -c -o sub/foo.o sub/foo.c
# ICC 7.0 will fill foo.d with something like
# foo.o: sub/foo.c
# foo.o: sub/foo.h
- # which is wrong. We want:
+ # which is wrong. We want
# sub/foo.o: sub/foo.c
# sub/foo.o: sub/foo.h
# sub/foo.c:
# sub/foo.h:
# ICC 7.1 will output
# foo.o: sub/foo.c sub/foo.h
- # and will wrap long lines using \ :
+ # and will wrap long lines using '\':
# foo.o: sub/foo.c ... \
# sub/foo.h ... \
# ...
-
+ # tcc 0.9.26 (FIXME still under development at the moment of writing)
+ # will emit a similar output, but also prepend the continuation lines
+ # with horizontal tabulation characters.
"$@" -MD -MF "$tmpdepfile"
stat=$?
if test $stat -eq 0; then :
# or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'.
# Do two passes, one to just change these to
# '$object: dependent.h' and one to simply 'dependent.h:'.
+ sed -e "s/^[ $tab][ $tab]*/ /" -e "s,^[^:]*:,$object :," \
+ < "$tmpdepfile" > "$depfile"
+ sed '
+ s/[ '"$tab"'][ '"$tab"']*/ /g
+ s/^ *//
+ s/ *\\*$//
+ s/^[^:]*: *//
+ /^$/d
+ /:$/d
+ s/$/ :/
+ ' < "$tmpdepfile" >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file. A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+ # Portland's C compiler understands '-MD'.
+ # Will always output deps to 'file.d' where file is the root name of the
+ # source file under compilation, even if file resides in a subdirectory.
+ # The object file name does not affect the name of the '.d' file.
+ # pgcc 10.2 will output
+ # foo.o: sub/foo.c sub/foo.h
+ # and will wrap long lines using '\' :
+ # foo.o: sub/foo.c ... \
+ # sub/foo.h ... \
+ # ...
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ # Use the source, not the object, to determine the base name, since
+ # that's sadly what pgcc will do too.
+ base=`echo "$source" | sed -e 's|^.*/||' -e 's/\.[-_a-zA-Z0-9]*$//'`
+ tmpdepfile="$base.d"
+
+ # For projects that build the same source file twice into different object
+ # files, the pgcc approach of using the *source* file root name can cause
+ # problems in parallel builds. Use a locking strategy to avoid stomping on
+ # the same $tmpdepfile.
+ lockdir="$base.d-lock"
+ trap "echo '$0: caught signal, cleaning up...' >&2; rm -rf $lockdir" 1 2 13 15
+ numtries=100
+ i=$numtries
+ while test $i -gt 0 ; do
+ # mkdir is a portable test-and-set.
+ if mkdir $lockdir 2>/dev/null; then
+ # This process acquired the lock.
+ "$@" -MD
+ stat=$?
+ # Release the lock.
+ rm -rf $lockdir
+ break
+ else
+ ## the lock is being held by a different process,
+ ## wait until the winning process is done or we timeout
+ while test -d $lockdir && test $i -gt 0; do
+ sleep 1
+ i=`expr $i - 1`
+ done
+ fi
+ i=`expr $i - 1`
+ done
+ trap - 1 2 13 15
+ if test $i -le 0; then
+ echo "$0: failed to acquire lock after $numtries attempts" >&2
+ echo "$0: check lockdir '$lockdir'" >&2
+ exit 1
+ fi
+
+ if test $stat -ne 0; then
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+ # Each line is of the form `foo.o: dependent.h',
+ # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+ # Do two passes, one to just change these to
+ # `$object: dependent.h' and one to simply `dependent.h:'.
sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this invocation
# correctly. Breaking it into two sed invocations is a workaround.
projects / gnulib.git / blobdiff