depcomp revision 4a53e3c2b83c476a93148eaee0272649beb221ca
# 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 # the Free Software Foundation; either version 2, or (at your option) # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # You should have received a copy of the GNU General Public License # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>. echo "$0: No command. Try '$0 --help' for more information." 1>&
2 # Get the directory component of the given path, and save it in the # global variables '$dir'. Note that this directory component will # be either empty or ending with a '/' character. This is deliberate. */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;; # Get the suffix-stripped basename of the given path, and save it the # global variable '$base'. base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'` # If no dependency file was actually created by the compiler invocation, # we still have to create a dummy depfile, to avoid errors with the # Factor out some common post-processing of the generated depfile. # Requires the auxiliary global variable '$tmpdepfile' to be set. # If the compiler actually managed to produce a dependency file, # Do two passes, one to just change these to # and one to simply output # which is needed to avoid the deleted-header problem. # A tabulation character. # Character ranges might be problematic outside the C locale. # These definitions help. echo "depcomp: Variables source, object and depmode must be set" 1>&
2 # Avoid interferences from the environment. # 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 # here, because this file can only contain one case statement. # HP compiler uses -M and no extra arg. # This is just like dashmstdout with a different argument. # This is just like msvisualcpp but w/o cygpath translation. # Just convert the backslash-escaped backslashes to single forward # This is just like msvc7 but w/o cygpath translation. # Just convert the backslash-escaped backslashes to single forward # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information. ## gcc 3 implements dependency tracking that does exactly what ## we want. Yay! Note: for some reason libtool 1.4 doesn't like ## it if -MD -MP comes after the -MF stuff. Hmm. ## Unfortunately, FreeBSD c89 acceptance of flags depends upon ## the command line argument order; so add the flags where they ## appear in depend2.am. Note that the slowdown incurred here ## affects only configure: in makefiles, %FASTDEP% shortcuts this. ## 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 $gccflag above). ## There are various ways to get dependency output from gcc. Here's ## why we pick this rather obscure method: ## - Don't want to use -MD because we'd like the dependencies to end ## up in a subdir. Having to rename by hand is ugly. ## (We might end up doing this anyway to support other compilers.) ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like ## -MM, not -M (despite what the docs say). Also, it might not be ## supported by the other compilers which use the 'gcc' depmode. ## - Using -M directly means running the compiler twice (even worse # The second -e expression handles DOS-style file names with drive ## This next piece of magic avoids the "deleted header file" problem. ## The problem is that when a header file which appears in a .P file ## is deleted, the dependency causes make to die (because there is ## typically no way to rebuild the header). We avoid this by adding ## dummy dependencies for each header file. Too bad gcc doesn't do ## Some versions of gcc put a space before the ':'. On the theory ## that the space means something, we add a space to the output as ## well. hp depmode also adds that space, but also prefixes the VPATH ## to the object. Take care to not repeat it in the output. ## Some versions of the HPUX 10.20 sed can't process this invocation ## correctly. Breaking it into two sed invocations is a workaround. |
sed -e
's/^\\$//' -e
'/^$/d' -e
"s|.*$object$||" -e
'/:$/d' \
# 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. if test -f
"$tmpdepfile";
then # yes, the sourcefile depend on other files # Clip off the initial element (the dependent). Don't try to be # clever and replace this with sed code, as IRIX sed won't handle # lines with more than a fixed number of characters (4096 in # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines; # the IRIX cc adds comments like '#:fec' to the end of the |
sed -e
's/^.*\.o://' -e
's/#.*$//' -e
'/^$/ d' \
# The second pass generates a dummy entry for each header file. |
sed -e
's/^.*\.o://' -e
's/#.*$//' -e
'/^$/ d' -e
's/$/:/' \
# 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. # 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 # start of each line; $object doesn't have directory information. # Version 6 uses the directory in both cases. # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26 # FIXME: That version still under development at the moment of writing. # Make that this statement remains true also for stable, released # It will wrap lines (doesn't matter whether long or short) with a # It will put a trailing '\' even on the last line, and will use leading # spaces rather than leading tabs (at least since its commit 0394caf7 # "Emit spaces for -MD"). # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'. # We have to change lines of the first kind to '$object: \'. # And for each line of the second kind, we have to emit a 'dep.h:' # dummy dependency, to avoid the deleted-header problem. ## 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. # 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. # and will wrap long lines using '\' : # Use the source, not the object, to determine the base name, since # that's sadly what pgcc will do too. # 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 echo '$0: caught signal, cleaning up...' >&2 # mkdir is a portable test-and-set. # This process acquired the lock. # If the lock is being held by a different process, wait # until the winning process is done or we timeout. echo "$0: failed to acquire lock after $numtries attempts" >&
2 # Do two passes, one to just change these to # Some versions of the HPUX 10.20 sed can't process this invocation # correctly. Breaking it into two sed invocations is a workaround. # The "hp" stanza above does not work with aCC (C++) and HP's ia64 # compilers, which have integrated preprocessors. The correct option # to use with these is +Maked; it writes dependencies to a file named # 'foo.d', which lands next to the object file, wherever that # Much of this is similar to the tru64 case; see comments there. # The Tru64 compiler uses -MD to generate dependencies as a side # 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. # Subdirectories are respected. # Libtool generates 2 separate objects for the 2 libraries. These # in $dir$base.o.d. We have to check for both files, because # one of the two compilations can be disabled. We should prefer # automatically cleaned when .libs/ is deleted, while ignoring # the former would cause a distcleancheck panic. # Same post-processing that is required for AIX mode. # 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. /^Note: including file: *\(.*\)/ { echo >>
"$depfile" # make sure the fragment doesn't end with a backslash # 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. # This comment above is used by automake to tell side-effect # dependency tracking mechanisms from slower ones. # Important note: in order to support this mode, a compiler *must* # always write the preprocessed file to stdout, regardless of -o. # Remove the call to Libtool. while test "X$1" !=
'X--mode=compile';
do # Require at least two characters before searching for ':' # in the target name. This is to cope with DOS-style filenames: # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise. # Some versions of the HPUX 10.20 sed can't process this sed invocation # correctly. Breaking it into two sed invocations is a workaround. |
sed -e
's/^\\$//' -e
'/^$/d' -e
'/:$/d' \
# This case only exists to satisfy depend.m4. It is never actually # run, as this mode is specially recognized in the preamble. # Remove any Libtool call while test "X$1" !=
'X--mode=compile';
do # Strip any option that makedepend may not understand. Remove # the object too, otherwise makedepend will parse it as a source file. # makedepend may prepend the VPATH from the source file name to the object. # No need to regex-escape $object, excess matching of '.' is harmless. # Some versions of the HPUX 10.20 sed can't process the last invocation # correctly. Breaking it into two sed invocations is a workaround. |
sed -e
's/^\\$//' -e
'/^$/d' -e
'/:$/d' \
# Important note: in order to support this mode, a compiler *must* # always write the preprocessed file to stdout. # Remove the call to Libtool. while test "X$1" !=
'X--mode=compile';
do |
sed -n -e
'/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-e
'/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
# Important note: in order to support this mode, a compiler *must* # always write the preprocessed file to stdout. # Remove the call to Libtool. while test "X$1" !=
'X--mode=compile';
do "-Gm"|
"/Gm"|
"-Gi"|
"/Gi"|
"-ZI"|
"/ZI")
# 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. # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-time-zone: "UTC0" # time-stamp-end: "; # UTC"