share/automake-1.11/am/depend2.am - toolchains/kvm - Git at Google

 ## automake - create Makefile.in from Makefile.am
 ## Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
 ## 2003, 2004, 2006, 2008, 2009  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
 ## the Free Software Foundation; either version 2, or (at your option)
 ## any later version.

 ## 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
 ## along with this program.  If not, see <http://www.gnu.org/licenses/>.

 ## This file is read several times:
 ## - once per *extension* (not per language) for generic compilation rules
 ## - once for each file which requires specific flags.

 ## Note it is on purpose we wrote `if %AMDEP%', since:
 ##
 ## - if deps are turned off, %AMDEP% is mapped onto FALSE, and therefore
 ##   the `if FALSE' chunk is removed (automake-time conditionals).
 ##
 ## - if deps are on, %AMDEP% is mapped onto AMDEP,  and therefore
 ##   the `if AMDEP' chunk is prefix with @AMDEP_TRUE@ just like for any
 ##   other configure-time conditional.
 ##
 ## We do likewise for %FASTDEP%; this expands to an ordinary
 ## configure-time conditional.  %FASTDEP% is used to speed up the
 ## common case of building a package with gcc 3.x.  In this case we
 ## can skip the use of depcomp and easily inline the dependency
 ## tracking.

 ## Verbosity of FASTDEP rules
 ## --------------------------
 ## (1) Some people want to see what happens during make.  They think
 ##     @-commands are evil because hiding things hinders debugging.
 ## (2) Other people want to see only the important commands--those that
 ##     may produce diagnostics, such as compiler invocations.  They
 ##     do not care about build details such as dependency generation
 ##     (the if/then/else machinery in FASTDEP rules).  Their point is
 ##     that it is hard to spot diagnostics in a verbose output.
 ## (3) Other people want `make -s' to work as expected: silently.
 ##     This way they can spot any diagnostic really easily.
 ##
 ## The second point suggests we hide rules with @ and that we `echo'
 ## only the relevant parts.  However this goes against the two others.
 ## There are regular complaints about this on the mailing list, but
 ## it's hard to please everybody.  On April 2003, William Fulton (from
 ## clan (3)) and Karl Berry (from clan (2)) agreed that folding the
 ## compile rules so that they are output on a single line (instead of 5)
 ## would be a good compromise.  Actually we use two lines rather than one,
 ## because this way %SOURCE% is always located at the end of the first
 ## line and is therefore easier to spot.  (We need an extra line when
 ## depbase is used.)

 if %?NONLIBTOOL%
 ?GENERIC?%EXT%.o:
 ?!GENERIC?%OBJ%: %SOURCE%
 if %FASTDEP%
 ## In fast-dep mode, we can always use -o.
 ## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
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 ?-o?	%COMPILE% %-c% %-o% %OBJ% %SOURCEFLAG%%SOURCE%
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 ?GENERIC?%EXT%.obj:
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 if %?GENERIC%
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 if %?LIBTOOL%
 ?GENERIC?%EXT%.lo:
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 if %FASTDEP%
 ## In fast-dep mode, we can always use -o.
 ## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
 ?!GENERIC?	%VERBOSE%%LTCOMPILE% -MT %LTOBJ% -MD -MP -MF %DEPBASE%.Tpo %-c% -o %LTOBJ% %SOURCEFLAG%`test -f '%SOURCE%' || echo '$(srcdir)/'`%SOURCE%
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 	DEPDIR=$(DEPDIR) $(%FPFX%DEPMODE) $(depcomp) @AMDEPBACKSLASH@
 endif %AMDEP%
 ## We can always use `-o' with Libtool.
 ?GENERIC?	%LTCOMPILE% %-c% -o %LTOBJ% %SOURCEFLAG%%SOURCE%
 ## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
 ?!GENERIC?	%LTCOMPILE% %-c% -o %LTOBJ% %SOURCEFLAG%`test -f '%SOURCE%' || echo '$(srcdir)/'`%SOURCE%
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	## automake - create Makefile.in from Makefile.am
	## Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
	## 2003, 2004, 2006, 2008, 2009 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
	## the Free Software Foundation; either version 2, or (at your option)
	## any later version.

	## 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
	## along with this program. If not, see <http://www.gnu.org/licenses/>.

	## This file is read several times:
	## - once per extension (not per language) for generic compilation rules
	## - once for each file which requires specific flags.

	## Note it is on purpose we wrote `if %AMDEP%', since:
	##
	## - if deps are turned off, %AMDEP% is mapped onto FALSE, and therefore
	## the `if FALSE' chunk is removed (automake-time conditionals).
	##
	## - if deps are on, %AMDEP% is mapped onto AMDEP, and therefore
	## the `if AMDEP' chunk is prefix with @AMDEP_TRUE@ just like for any
	## other configure-time conditional.
	##
	## We do likewise for %FASTDEP%; this expands to an ordinary
	## configure-time conditional. %FASTDEP% is used to speed up the
	## common case of building a package with gcc 3.x. In this case we
	## can skip the use of depcomp and easily inline the dependency
	## tracking.

	## Verbosity of FASTDEP rules
	## --------------------------
	## (1) Some people want to see what happens during make. They think
	## @-commands are evil because hiding things hinders debugging.
	## (2) Other people want to see only the important commands--those that
	## may produce diagnostics, such as compiler invocations. They
	## do not care about build details such as dependency generation
	## (the if/then/else machinery in FASTDEP rules). Their point is
	## that it is hard to spot diagnostics in a verbose output.
	## (3) Other people want `make -s' to work as expected: silently.
	## This way they can spot any diagnostic really easily.
	##
	## The second point suggests we hide rules with @ and that we `echo'
	## only the relevant parts. However this goes against the two others.
	## There are regular complaints about this on the mailing list, but
	## it's hard to please everybody. On April 2003, William Fulton (from
	## clan (3)) and Karl Berry (from clan (2)) agreed that folding the
	## compile rules so that they are output on a single line (instead of 5)
	## would be a good compromise. Actually we use two lines rather than one,
	## because this way %SOURCE% is always located at the end of the first
	## line and is therefore easier to spot. (We need an extra line when
	## depbase is used.)

	if %?NONLIBTOOL%
	?GENERIC?%EXT%.o:
	?!GENERIC?%OBJ%: %SOURCE%
	if %FASTDEP%
	## In fast-dep mode, we can always use -o.
	## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
	?!GENERIC? %VERBOSE%%COMPILE% -MT %OBJ% -MD -MP -MF %DEPBASE%.Tpo %-c% -o %OBJ% %SOURCEFLAG%`test -f '%SOURCE%' \|\| echo '$(srcdir)/'`%SOURCE%
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	?-o? %COMPILE% %-c% %-o% %OBJ% %SOURCEFLAG%%SOURCE%
	?!-o? %COMPILE% %-c% %SOURCEFLAG%%SOURCE%
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	## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
	?-o? %COMPILE% %-c% %-o% %OBJ% %SOURCEFLAG%`test -f '%SOURCE%' \|\| echo '$(srcdir)/'`%SOURCE%
	?!-o? %COMPILE% %-c% %SOURCEFLAG%`test -f '%SOURCE%' \|\| echo '$(srcdir)/'`%SOURCE%
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	endif !%FASTDEP%

	?GENERIC?%EXT%.obj:
	?!GENERIC?%OBJOBJ%: %SOURCE%
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	## In fast-dep mode, we can always use -o.
	## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
	?!GENERIC? %VERBOSE%%COMPILE% -MT %OBJOBJ% -MD -MP -MF %DEPBASE%.Tpo %-c% -o %OBJOBJ% %SOURCEFLAG%`if test -f '%SOURCE%'; then $(CYGPATH_W) '%SOURCE%'; else $(CYGPATH_W) '$(srcdir)/%SOURCE%'; fi`
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	## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
	?-o? %COMPILE% %-c% %-o% %OBJOBJ% %SOURCEFLAG%`if test -f '%SOURCE%'; then $(CYGPATH_W) '%SOURCE%'; else $(CYGPATH_W) '$(srcdir)/%SOURCE%'; fi`
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	if %?LIBTOOL%
	?GENERIC?%EXT%.lo:
	?!GENERIC?%LTOBJ%: %SOURCE%
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	## In fast-dep mode, we can always use -o.
	## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
	?!GENERIC? %VERBOSE%%LTCOMPILE% -MT %LTOBJ% -MD -MP -MF %DEPBASE%.Tpo %-c% -o %LTOBJ% %SOURCEFLAG%`test -f '%SOURCE%' \|\| echo '$(srcdir)/'`%SOURCE%
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	endif %AMDEP%
	## We can always use `-o' with Libtool.
	?GENERIC? %LTCOMPILE% %-c% -o %LTOBJ% %SOURCEFLAG%%SOURCE%
	## For non-suffix rules, we must emulate a VPATH search on %SOURCE%.
	?!GENERIC? %LTCOMPILE% %-c% -o %LTOBJ% %SOURCEFLAG%`test -f '%SOURCE%' \|\| echo '$(srcdir)/'`%SOURCE%
	endif !%FASTDEP%
	endif %?LIBTOOL%