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46 lines
1.3 KiB
Plaintext
46 lines
1.3 KiB
Plaintext
# AM_CONDITIONAL
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# Copyright 1997, 2000, 2001 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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# serial 3
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# AM_CONDITIONAL(NAME, SHELL-CONDITION)
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# -------------------------------------
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# Define a conditional.
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#
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# FIXME: Once using 2.50, use this:
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# m4_match([$1], [^TRUE\|FALSE$], [AC_FATAL([$0: invalid condition: $1])])dnl
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AC_DEFUN([AM_CONDITIONAL],
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[ifelse([$1], [TRUE],
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[errprint(__file__:__line__: [$0: invalid condition: $1
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])dnl
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m4exit(1)])dnl
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ifelse([$1], [FALSE],
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[errprint(__file__:__line__: [$0: invalid condition: $1
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])dnl
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m4exit(1)])dnl
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AC_SUBST([$1_TRUE])
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AC_SUBST([$1_FALSE])
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if $2; then
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$1_TRUE=
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$1_FALSE='#'
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else
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$1_TRUE='#'
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$1_FALSE=
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fi])
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