| 1 | # Check to see how 'make' treats includes. -*- Autoconf -*-
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| 2 |
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| 3 | # Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
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| 4 |
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| 5 | # This program is free software; you can redistribute it and/or modify
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| 6 | # it under the terms of the GNU General Public License as published by
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| 7 | # the Free Software Foundation; either version 2, or (at your option)
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| 8 | # any later version.
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| 9 |
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| 10 | # This program is distributed in the hope that it will be useful,
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| 11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | # GNU General Public License for more details.
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| 14 |
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| 15 | # You should have received a copy of the GNU General Public License
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| 16 | # along with this program; if not, write to the Free Software
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| 17 | # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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| 18 | # 02111-1307, USA.
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| 19 |
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| 20 | # serial 2
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| 21 |
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| 22 | # AM_MAKE_INCLUDE()
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| 23 | # -----------------
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| 24 | # Check to see how make treats includes.
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| 25 | AC_DEFUN([AM_MAKE_INCLUDE],
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| 26 | [am_make=${MAKE-make}
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| 27 | cat > confinc << 'END'
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| 28 | am__doit:
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| 29 | @echo done
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| 30 | .PHONY: am__doit
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| 31 | END
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| 32 | # If we don't find an include directive, just comment out the code.
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| 33 | AC_MSG_CHECKING([for style of include used by $am_make])
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| 34 | am__include="#"
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| 35 | am__quote=
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| 36 | _am_result=none
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| 37 | # First try GNU make style include.
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| 38 | echo "include confinc" > confmf
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| 39 | # We grep out `Entering directory' and `Leaving directory'
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| 40 | # messages which can occur if `w' ends up in MAKEFLAGS.
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| 41 | # In particular we don't look at `^make:' because GNU make might
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| 42 | # be invoked under some other name (usually "gmake"), in which
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| 43 | # case it prints its new name instead of `make'.
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| 44 | if test "`$am_make -s -f confmf 2> /dev/null | grep -v 'ing directory'`" = "done"; then
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| 45 | am__include=include
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| 46 | am__quote=
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| 47 | _am_result=GNU
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| 48 | fi
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| 49 | # Now try BSD make style include.
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| 50 | if test "$am__include" = "#"; then
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| 51 | echo '.include "confinc"' > confmf
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| 52 | if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then
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| 53 | am__include=.include
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| 54 | am__quote="\""
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| 55 | _am_result=BSD
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| 56 | fi
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| 57 | fi
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| 58 | AC_SUBST([am__include])
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| 59 | AC_SUBST([am__quote])
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| 60 | AC_MSG_RESULT([$_am_result])
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| 61 | rm -f confinc confmf
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| 62 | ])
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