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Add platform-specific fixes file

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Create a new file, platform.h, for platform-specific hacks

for MSVC, this includes defining strncasecmp to _stricmp and
strdup to _strdup, among other things like defining missing
stat macros

Change some things not supported in MSVC, like _Static_assert,
to their counterparts (in this case, static_assert)

Replace usage of VLAs with malloc and free

Update getopt_long and use the getopt implementation from musl
on Windows.

Use comments to show which functions from platform.h are being used
This commit is contained in:
James Larrowe
2020-07-21 14:24:22 -04:00
parent 0793e9effe
commit e51701acaa
11 changed files with 167 additions and 39 deletions
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6
include/extern/getopt.h vendored
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@@ -1,5 +1,5 @@
/*
* Copyright © 2005-2019 Rich Felker, et al.
* Copyright © 2005-2020 Rich Felker, et al.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
@@ -23,8 +23,8 @@
/* This implementation was taken from musl and modified for RGBDS */
#ifndef _GETOPT_H
#define _GETOPT_H
#ifndef RGBDS_EXTERN_GETOPT_H
#define RGBDS_EXTERN_GETOPT_H
extern char *optarg;
extern int optind, opterr, optopt, optreset;

2
include/hashmap.h
View File

@@ -15,7 +15,7 @@
#define HASH_NB_BITS 32
#define HALF_HASH_NB_BITS 16
_Static_assert(HALF_HASH_NB_BITS * 2 == HASH_NB_BITS, "");
static_assert(HALF_HASH_NB_BITS * 2 == HASH_NB_BITS, "");
#define HASHMAP_NB_BUCKETS (1 << HALF_HASH_NB_BITS)
/* HashMapEntry is internal, please do not attempt to use it */

35
include/platform.h Normal file
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@@ -0,0 +1,35 @@
/*
* This file is part of RGBDS.
*
* Copyright (c) 2020 RGBDS contributors.
*
* SPDX-License-Identifier: MIT
*/
/* platform-specific hacks */
#ifndef RGBDS_PLATFORM_H
#define RGBDS_PLATFORM_H
/* MSVC doesn't have strncasecmp, use a suitable replacement */
#ifdef _MSC_VER
# include <string.h>
# define strncasecmp _strnicmp
#else
# include <strings.h>
#endif
/* MSVC has deprecated strdup in favor of _strdup */
#ifdef _MSC_VER
# define strdup _strdup
#endif
/* MSVC prefixes the names of S_* macros with underscores,
and doesn't define any S_IS* macros. Define them ourselves */
#ifdef _MSC_VER
# define S_IFMT _S_IFMT
# define S_IFDIR _S_IFDIR
# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
#endif
#endif /* RGBDS_PLATFORM_H */