diff options
Diffstat (limited to 'src/libs/gnulib/build-aux/depcomp')
| -rwxr-xr-x | src/libs/gnulib/build-aux/depcomp | 255 |
1 files changed, 206 insertions, 49 deletions
diff --git a/src/libs/gnulib/build-aux/depcomp b/src/libs/gnulib/build-aux/depcomp index df8eea7e..e1f51f48 100755 --- a/src/libs/gnulib/build-aux/depcomp +++ b/src/libs/gnulib/build-aux/depcomp @@ -1,10 +1,9 @@ #! /bin/sh # depcomp - compile a program generating dependencies as side-effects -scriptversion=2009-04-28.21; # UTC +scriptversion=2012-07-12.20; # UTC -# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 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 @@ -28,7 +27,7 @@ scriptversion=2009-04-28.21; # UTC case $1 in '') - echo "$0: No command. Try \`$0 --help' for more information." 1>&2 + echo "$0: No command. Try '$0 --help' for more information." 1>&2 exit 1; ;; -h | --h*) @@ -40,11 +39,11 @@ as side-effects. Environment variables: depmode Dependency tracking mode. - source Source file read by `PROGRAMS ARGS'. - object Object file output by `PROGRAMS ARGS'. + source Source file read by 'PROGRAMS ARGS'. + object Object file output by 'PROGRAMS ARGS'. DEPDIR directory where to store dependencies. depfile Dependency file to output. - tmpdepfile Temporary file to use when outputing dependencies. + tmpdepfile Temporary file to use when outputting dependencies. libtool Whether libtool is used (yes/no). Report bugs to <bug-automake@gnu.org>. @@ -57,6 +56,12 @@ EOF ;; esac +# A tabulation character. +tab=' ' +# A newline character. +nl=' +' + if test -z "$depmode" || test -z "$source" || test -z "$object"; then echo "depcomp: Variables source, object and depmode must be set" 1>&2 exit 1 @@ -69,6 +74,9 @@ tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`} rm -f "$tmpdepfile" +# Avoid interferences from the environment. +gccflag= dashmflag= + # Some modes work just like other modes, but use different flags. We # parameterize here, but still list the modes in the big case below, # to make depend.m4 easier to write. Note that we *cannot* use a case @@ -90,10 +98,24 @@ if test "$depmode" = msvcmsys; then # This is just like msvisualcpp but w/o cygpath translation. # Just convert the backslash-escaped backslashes to single forward # slashes to satisfy depend.m4 - cygpath_u="sed s,\\\\\\\\,/,g" + cygpath_u='sed s,\\\\,/,g' depmode=msvisualcpp fi +if test "$depmode" = msvc7msys; then + # This is just like msvc7 but w/o cygpath translation. + # Just convert the backslash-escaped backslashes to single forward + # slashes to satisfy depend.m4 + cygpath_u='sed s,\\\\,/,g' + depmode=msvc7 +fi + +if test "$depmode" = xlc; then + # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information. + gccflag=-qmakedep=gcc,-MF + depmode=gcc +fi + case "$depmode" in gcc3) ## gcc 3 implements dependency tracking that does exactly what @@ -123,13 +145,17 @@ gcc3) ;; gcc) +## Note that this doesn't just cater to obsosete pre-3.x GCC compilers. +## but also to in-use compilers like IMB xlc/xlC and the HP C compiler. +## (see the conditional assignment to $gccflag above). ## There are various ways to get dependency output from gcc. Here's ## why we pick this rather obscure method: ## - Don't want to use -MD because we'd like the dependencies to end ## up in a subdir. Having to rename by hand is ugly. ## (We might end up doing this anyway to support other compilers.) ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like -## -MM, not -M (despite what the docs say). +## -MM, not -M (despite what the docs say). Also, it might not be +## supported by the other compilers which use the 'gcc' depmode. ## - Using -M directly means running the compiler twice (even worse ## than renaming). if test -z "$gccflag"; then @@ -148,20 +174,21 @@ gcc) ## The second -e expression handles DOS-style file names with drive letters. sed -e 's/^[^:]*: / /' \ -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile" -## This next piece of magic avoids the `deleted header file' problem. +## This next piece of magic avoids the "deleted header file" problem. ## The problem is that when a header file which appears in a .P file ## is deleted, the dependency causes make to die (because there is ## typically no way to rebuild the header). We avoid this by adding ## dummy dependencies for each header file. Too bad gcc doesn't do ## this for us directly. - tr ' ' ' -' < "$tmpdepfile" | -## Some versions of gcc put a space before the `:'. On the theory + tr ' ' "$nl" < "$tmpdepfile" | +## Some versions of gcc put a space before the ':'. On the theory ## that the space means something, we add a space to the output as -## well. +## well. hp depmode also adds that space, but also prefixes the VPATH +## to the object. Take care to not repeat it in the output. ## Some versions of the HPUX 10.20 sed can't process this invocation ## correctly. Breaking it into two sed invocations is a workaround. - sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile" + sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \ + | sed -e 's/$/ :/' >> "$depfile" rm -f "$tmpdepfile" ;; @@ -193,18 +220,15 @@ sgi) # clever and replace this with sed code, as IRIX sed won't handle # lines with more than a fixed number of characters (4096 in # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines; - # the IRIX cc adds comments like `#:fec' to the end of the + # the IRIX cc adds comments like '#:fec' to the end of the # dependency line. - tr ' ' ' -' < "$tmpdepfile" \ + tr ' ' "$nl" < "$tmpdepfile" \ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \ - tr ' -' ' ' >> "$depfile" + tr "$nl" ' ' >> "$depfile" echo >> "$depfile" # The second pass generates a dummy entry for each header file. - tr ' ' ' -' < "$tmpdepfile" \ + tr ' ' "$nl" < "$tmpdepfile" \ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \ >> "$depfile" else @@ -216,10 +240,17 @@ sgi) rm -f "$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 - # current directory. Also, the AIX compiler puts `$object:' at the + # current directory. Also, the AIX compiler puts '$object:' at the # start of each line; $object doesn't have directory information. # Version 6 uses the directory in both cases. dir=`echo "$object" | sed -e 's|/[^/]*$|/|'` @@ -249,12 +280,11 @@ aix) test -f "$tmpdepfile" && break done if test -f "$tmpdepfile"; then - # Each line is of the form `foo.o: dependent.h'. + # Each line is of the form 'foo.o: dependent.h'. # Do two passes, one to just change these to - # `$object: dependent.h' and one to simply `dependent.h:'. + # '$object: dependent.h' and one to simply 'dependent.h:'. sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile" - # That's a tab and a space in the []. - sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile" + sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile" else # The sourcefile does not contain any dependencies, so just # store a dummy comment line, to avoid errors with the Makefile @@ -265,23 +295,26 @@ aix) ;; 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 : @@ -290,6 +323,85 @@ icc) 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 -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 @@ -334,7 +446,7 @@ hp2) done if test -f "$tmpdepfile"; then sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile" - # Add `dependent.h:' lines. + # Add 'dependent.h:' lines. sed -ne '2,${ s/^ *// s/ \\*$// @@ -349,9 +461,9 @@ hp2) tru64) # The Tru64 compiler uses -MD to generate dependencies as a side - # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'. + # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'. # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put - # dependencies in `foo.d' instead, so we check for that too. + # dependencies in 'foo.d' instead, so we check for that too. # Subdirectories are respected. dir=`echo "$object" | sed -e 's|/[^/]*$|/|'` test "x$dir" = "x$object" && dir= @@ -397,14 +509,59 @@ tru64) done if test -f "$tmpdepfile"; then sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile" - # That's a tab and a space in the []. - sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile" + sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile" else echo "#dummy" > "$depfile" fi rm -f "$tmpdepfile" ;; +msvc7) + if test "$libtool" = yes; then + showIncludes=-Wc,-showIncludes + else + showIncludes=-showIncludes + fi + "$@" $showIncludes > "$tmpdepfile" + stat=$? + grep -v '^Note: including file: ' "$tmpdepfile" + if test "$stat" = 0; then : + else + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + echo "$object : \\" > "$depfile" + # The first sed program below extracts the file names and escapes + # backslashes for cygpath. The second sed program outputs the file + # name when reading, but also accumulates all include files in the + # hold buffer in order to output them again at the end. This only + # works with sed implementations that can handle large buffers. + sed < "$tmpdepfile" -n ' +/^Note: including file: *\(.*\)/ { + s//\1/ + s/\\/\\\\/g + p +}' | $cygpath_u | sort -u | sed -n ' +s/ /\\ /g +s/\(.*\)/'"$tab"'\1 \\/p +s/.\(.*\) \\/\1:/ +H +$ { + s/.*/'"$tab"'/ + G + p +}' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +msvc7msys) + # 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 + ;; + #nosideeffect) # This comment above is used by automake to tell side-effect # dependency tracking mechanisms from slower ones. @@ -422,7 +579,7 @@ dashmstdout) shift fi - # Remove `-o $object'. + # Remove '-o $object'. IFS=" " for arg do @@ -442,15 +599,14 @@ dashmstdout) done test -z "$dashmflag" && dashmflag=-M - # Require at least two characters before searching for `:' + # Require at least two characters before searching for ':' # in the target name. This is to cope with DOS-style filenames: - # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise. + # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise. "$@" $dashmflag | - sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile" + sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile" rm -f "$depfile" cat < "$tmpdepfile" > "$depfile" - tr ' ' ' -' < "$tmpdepfile" | \ + tr ' ' "$nl" < "$tmpdepfile" | \ ## Some versions of the HPUX 10.20 sed can't process this invocation ## correctly. Breaking it into two sed invocations is a workaround. sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile" @@ -503,9 +659,10 @@ makedepend) touch "$tmpdepfile" ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@" rm -f "$depfile" - cat < "$tmpdepfile" > "$depfile" - sed '1,2d' "$tmpdepfile" | tr ' ' ' -' | \ + # makedepend may prepend the VPATH from the source file name to the object. + # No need to regex-escape $object, excess matching of '.' is harmless. + sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile" + sed '1,2d' "$tmpdepfile" | tr ' ' "$nl" | \ ## Some versions of the HPUX 10.20 sed can't process this invocation ## correctly. Breaking it into two sed invocations is a workaround. sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile" @@ -525,7 +682,7 @@ cpp) shift fi - # Remove `-o $object'. + # Remove '-o $object'. IFS=" " for arg do @@ -594,8 +751,8 @@ msvisualcpp) sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile" rm -f "$depfile" echo "$object : \\" > "$depfile" - sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile" - echo " " >> "$depfile" + sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile" + echo "$tab" >> "$depfile" sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile" rm -f "$tmpdepfile" ;; |