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git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@22291 e7fa87d3-cd2b-0410-9028-fcbf551c1848
45 lines
1.7 KiB
Plaintext
45 lines
1.7 KiB
Plaintext
-*- Autoconf -*-
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# Common code for C-like languages (C, C++, Java, etc.)
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# Copyright (C) 2012 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 3 of the License, or
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# (at your option) any later version.
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#
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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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#
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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, see <http://www.gnu.org/licenses/>.
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# b4_dollar_dollar_(VALUE, FIELD, DEFAULT-FIELD)
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# ----------------------------------------------
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# If FIELD (or DEFAULT-FIELD) is non-null, return "VALUE.FIELD",
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# otherwise just VALUE. Be sure to pass "(VALUE)" is VALUE is a
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# pointer.
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m4_define([b4_dollar_dollar_],
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[m4_if([$2], [[]],
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[m4_ifval([$3], [($1.$3)],
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[$1])],
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[($1.$2)])])
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# b4_dollar_pushdef(VALUE-POINTER, DEFAULT-FIELD, LOCATION)
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# b4_dollar_popdef
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# ---------------------------------------------------------
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# Define b4_dollar_dollar for VALUE and DEFAULT-FIELD,
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# and b4_at_dollar for LOCATION.
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m4_define([b4_dollar_pushdef],
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[m4_pushdef([b4_dollar_dollar],
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[b4_dollar_dollar_([$1], m4_dquote($][1), [$2])])dnl
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m4_pushdef([b4_at_dollar], [$3])dnl
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])
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m4_define([b4_dollar_popdef],
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[m4_popdef([b4_at_dollar])dnl
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m4_popdef([b4_dollar_dollar])dnl
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])
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