61 lines
1.9 KiB
Text
61 lines
1.9 KiB
Text
/*
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* DISTRHO Cardinal Plugin
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* Copyright (C) 2021 Filipe Coelho <falktx@falktx.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 3 of
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* the License, or 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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* For a full copy of the GNU General Public License see the LICENSE file.
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*/
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#pragma once
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/* On mingw stdio functions like printf are not inline, and thus get defined every time they are used.
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* Its <cstdio> also does `#undef printf` which invalidates our macros :(
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* We go through a few steps to ensure unique symbol names.
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*/
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#ifdef STDIO_OVERRIDE
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// helper macros
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# define STDIO_OVERRIDE_HELPER(NS, SEP, FN) NS ## SEP ## FN
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# define STDIO_OVERRIDE_MACRO(NS, FN) STDIO_OVERRIDE_HELPER(NS, _, FN)
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// step 1: prefix the needed stdio functions
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# define printf STDIO_OVERRIDE_MACRO(STDIO_OVERRIDE, printf)
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// step 2: inlude <stdio.h> which will use our prefixed names
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# include <stdio.h>
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// step 3: undef and define dummy functions required for <cstdio> (it uses `using ::printf` syntax)
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# undef printf
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static inline void printf() {}
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// step 4: we can safely include <cstdio> now
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# include_next <cstdio>
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// step 5: define the same macros as in step 1
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# define printf STDIO_OVERRIDE_MACRO(STDIO_OVERRIDE, printf)
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// step 6: place the macro prefixed names in std namespace
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/*
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namespace std {
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using ::printf;
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}
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*/
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// extra, there might be warnings for GCC format attribute, ignore those
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#pragma GCC diagnostic ignored "-Wformat"
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#else // STDIO_OVERRIDE
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// if STDIO_OVERRIDE is not defined, we have nothing to do
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# include_next <cstdio>
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#endif // STDIO_OVERRIDE
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