✏ 编辑: header-vars.am

## automake - create Makefile.in from Makefile.am
## Copyright (C) 1994-2013 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/>.

VPATH = @srcdir@

@SET_MAKE@

## We used to define this.  However, we don't because vendor makes
## (e.g., Solaris, Irix) won't correctly propagate variables that are
## defined in Makefile.  This particular variable can't be correctly
## defined by configure (at least, not the current configure), so we
## simply avoid defining it to allow the user to use this feature with
## a vendor make.
## DESTDIR =

## Shell code that determines whether we are running under GNU make.
## This is somewhat of an hack, and might be improved, but is good
## enough for now.
am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'

## Shell code that determines whether the current make instance is
## running with a given one-letter option (e.g., -k, -n) that takes
## no argument.
am__make_running_with_option = \
  case $${target_option-} in \
      ?) ;; \
      *) echo "am__make_running_with_option: internal error: invalid" \
              "target option '$${target_option-}' specified" >&2; \
         exit 1;; \
  esac; \
  has_opt=no; \
  sane_makeflags=$$MAKEFLAGS; \
  if $(am__is_gnu_make); then \
## The format of $(MAKEFLAGS) is quite tricky with GNU make; the
## variable $(MFLAGS) behaves much better in that regard.  So use it.
    sane_makeflags=$$MFLAGS; \
  else \
## Non-GNU make: we must rely on $(MAKEFLAGS).  This is tricker and more
## brittle, but is the best we can do.
    case $$MAKEFLAGS in \
## If we run "make TESTS='snooze nap'", FreeBSD make will export MAKEFLAGS
## to " TESTS=foo\ nap", so that the simpler loop below (on word-split
## $$MAKEFLAGS) would see a "make flag" equal to "nap", and would wrongly
## misinterpret that as and indication that make is running in dry mode.
## This has already happened in practice.  So we need this hack.
      *\\[\ \	]*) \
## Extra indirection with ${bs} required by FreeBSD 8.x make.
## Not sure why (so sorry for the cargo-cult programming here).
        bs=\\; \
        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
    esac; \
  fi; \
  skip_next=no; \
  strip_trailopt () \
  { \
    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
  }; \
  for flg in $$sane_makeflags; do \
    test $$skip_next = yes && { skip_next=no; continue; }; \
    case $$flg in \
      *=*|--*) continue;; \
##
## GNU make 4.0 has changed the format of $MFLAGS, and removed the space
## between an option and its argument (e.g., from "-I dir" to "-Idir").
## So we need to handle both formats, at least for options valid in GNU
## make.  OTOH, BSD make formats $(MAKEFLAGS) by separating all options,
## and separating any option from its argument, so things are easier
## there.
##
## For GNU make and BSD make.
        -*I) strip_trailopt 'I'; skip_next=yes;; \
      -*I?*) strip_trailopt 'I';; \
## For GNU make >= 4.0.
        -*O) strip_trailopt 'O'; skip_next=yes;; \
      -*O?*) strip_trailopt 'O';; \
## For GNU make (possibly overkill, this one).
        -*l) strip_trailopt 'l'; skip_next=yes;; \
      -*l?*) strip_trailopt 'l';; \
## For BSD make.
      -[dEDm]) skip_next=yes;; \
## For NetBSD make.
      -[JT]) skip_next=yes;; \
    esac; \
    case $$flg in \
      *$$target_option*) has_opt=yes; break;; \
    esac; \
  done; \
  test $$has_opt = yes

## Shell code that determines whether make is running in "dry mode"
## ("make -n") or not.  Useful in rules that invoke make recursively,
## and are thus executed also with "make -n" -- either because they
## are declared as dependencies to '.MAKE' (NetBSD make), or because
## their recipes contain the "$(MAKE)" string (GNU and Solaris make).
am__make_dryrun = (target_option=n; $(am__make_running_with_option))

## Shell code that determines whether make is running in "keep-going mode"
## ("make -k") or not.  Useful in rules that must recursively descend into
## subdirectories, and decide whether to stop at the first error or not.
am__make_keepgoing = (target_option=k; $(am__make_running_with_option))

## Some derived variables that have been found to be useful.
pkgdatadir = $(datadir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkglibexecdir = $(libexecdir)/@PACKAGE@

am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)

## These are defined because otherwise make on NetBSD V1.1 will print
## (eg): $(NORMAL_INSTALL) expands to empty string.
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :

## dejagnu.am uses these variables.  Some users might rely on them too.
?BUILD?build_triplet = @build@
?HOST?host_triplet = @host@
?TARGET?target_triplet = @target@

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