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Start a contrib/ with libgc and libregex (#127)
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‎contrib/README.md‎

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# Unsupported w64devkit enhancements
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The files in this directory enhance w64devkit with specially-built
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third-party libraries, such as garbage collection and POSIX `regex.h`.
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Falling outside the scope of w64devkit, these libraries are not included
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in the distribution, but may be situationally useful.
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The header of each file has the instructions for its use. The file itself
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is mostly a custom build script, and you will need to obtain the library
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sources yourself the usual way.

‎contrib/libgc.c‎

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#if 0
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# Minimalist, stripped down, w64devkit, static, unity build of Boehm GC.
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# Provides an easy-to-use garbage collector weighing ~24KiB. The API is
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# two functions: GC_malloc and GC_realloc. Tested with gc 8.2.4.
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#
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# Place this source file in the Boehm GC source tree root, then invoke
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# it with the shell to produce gc.h and libgc.a.
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#
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# $ sh libgc.c
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#
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# Philosophy: If the goal is ease-of-use, remove all knobs that are not
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# strictly necessary. If performance isn't good enough, don't use garbage
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# collection; switch to a region-based allocator.
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#
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# Ref: https://www.hboehm.info/gc/gc_source/gc-8.2.4.tar.gz
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# This is free and unencumbered software released into the public domain.
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set -ex
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PREFIX="${PREFIX:-$(gcc -print-sysroot)}"
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${CC:-cc} -c -Iinclude -fwhole-program ${CFLAGS:--Os} libgc.c
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${STRIP-strip} -x libgc.o
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mkdir -p "$PREFIX/lib"
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rm -f "$PREFIX/lib/libgc.a"
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${AR:-ar} -r "$PREFIX/lib/libgc.a" libgc.o
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mkdir -p "$PREFIX/include"
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tee "$PREFIX/include/gc.h" <<EOF
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#ifndef GC_H
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#define GC_H
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// Single-threaded, garbage-collected, zero-initialized memory allocation.
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#include <stddef.h>
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void *GC_malloc(size_t) __attribute((alloc_size(1), malloc));
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void *GC_realloc(void *, size_t) __attribute((alloc_size(2)));
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#endif
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EOF
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exit 0
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#endif
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#define ALL_INTERIOR_POINTERS
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#define DONT_USE_ATEXIT
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#define GC_API
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#define GC_NO_FINALIZATION
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#define GC_TOGGLE_REFS_NOT_NEEDED
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#define GC_USE_ENTIRE_HEAP
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#define NO_CLOCK
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#define NO_DEBUGGING
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#define NO_GETENV
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#define NO_MSGBOX_ON_ERROR
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#include "allchblk.c"
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#include "alloc.c"
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#include "blacklst.c"
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#include "dbg_mlc.c"
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#include "dyn_load.c"
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#include "finalize.c"
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#include "headers.c"
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#include "mach_dep.c"
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#include "malloc.c"
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#include "mallocx.c"
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#include "mark.c"
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#include "mark_rts.c"
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#include "misc.c"
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#include "new_hblk.c"
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#include "obj_map.c"
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#include "os_dep.c"
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#include "ptr_chck.c"
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#include "reclaim.c"
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__attribute((used)) void *GC_malloc(size_t);
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__attribute((used)) void *GC_realloc(void *, size_t);

‎contrib/libregex.c‎

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#if 0
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# Stripped down, w64devkit, static, unity build of the PCRE2 POSIX regex
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# library. This script builds and installs regex.h and libregex.a inside
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# w64devkit. Link with -lregex. It is pretty bulky, nearly 300KiB.
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#
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# Copy and run this script in the root fo the PCRE source tree. Tested
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# with PCRE 10.43.
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#
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# $ sh libregex.c
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#
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# Ref: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/regex.h.html
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# This is free and unencumbered software released into the public domain.
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set -ex
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PREFIX="${PREFIX:-$(gcc -print-sysroot)}"
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cp src/pcre2.h.generic src/pcre2.h
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${CC:-cc} -c -fwhole-program ${CFLAGS:--Os} "$0"
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${STRIP:-strip} -x libregex.o
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mkdir -p "$PREFIX/lib"
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rm -f "$PREFIX/lib/libregex.a"
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${AR:-ar} -r "$PREFIX/lib/libregex.a" libregex.o
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mkdir -p "$PREFIX/include"
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tee >nul $PREFIX/include/regex.h <<EOF
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#pragma once
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#include <stddef.h>
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enum {
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REG_EXTENDED = 0x0000,
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REG_ICASE = 0x0001,
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REG_NEWLINE = 0x0002,
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REG_NOTBOL = 0x0004,
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REG_NOTEOL = 0x0008,
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REG_DOTALL = 0x0010,
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REG_NOSUB = 0x0020,
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REG_UTF = 0x0040,
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REG_STARTEND = 0x0080,
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REG_NOTEMPTY = 0x0100,
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REG_UNGREEDY = 0x0200,
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REG_UCP = 0x0400,
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REG_PEND = 0x0800,
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REG_NOSPEC = 0x1000,
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};
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enum {
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REG_ASSERT = 1,
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REG_BADBR,
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REG_BADPAT,
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REG_BADRPT,
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REG_EBRACE,
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REG_EBRACK,
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REG_ECOLLATE,
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REG_ECTYPE,
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REG_EESCAPE,
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REG_EMPTY,
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REG_EPAREN,
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REG_ERANGE,
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REG_ESIZE,
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REG_ESPACE,
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REG_ESUBREG,
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REG_INVARG,
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REG_NOMATCH,
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};
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typedef struct {
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void *re_pcre2_code;
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void *re_match_data;
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char *re_endp;
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size_t re_nsub;
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size_t re_erroffset;
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int re_cflags;
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} regex_t;
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typedef int regoff_t;
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typedef struct {
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regoff_t rm_so;
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regoff_t rm_eo;
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} regmatch_t;
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int regcomp(regex_t *, const char *, int);
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size_t regerror(int, const regex_t *, char *, size_t);
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int regexec(const regex_t *, const char *, size_t, regmatch_t *, int);
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void regfree(regex_t *);
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EOF
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exit 0
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#endif
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#define PCRE2_EXP_DEFN static
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#define PCRE2_EXP_DECL static
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#define PCRE2POSIX_EXP_DECL
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#define PCRE2POSIX_EXP_DEFN __attribute((used))
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#define HAVE_BUILTIN_MUL_OVERFLOW
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#define HAVE_MEMMOVE
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#define HEAP_LIMIT 20000000
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#define LINK_SIZE 2
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#define MATCH_LIMIT 10000000
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#define MATCH_LIMIT_DEPTH MATCH_LIMIT
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#define MAX_NAME_COUNT 10000
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#define MAX_NAME_SIZE 32
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#define MAX_VARLOOKBEHIND 255
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#define NEWLINE_DEFAULT 2
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#define PARENS_NEST_LIMIT 250
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#define PCRE2_CODE_UNIT_WIDTH 8
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#define PCRE2_STATIC
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#define SUPPORT_UNICODE
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#include "src/pcre2posix.h"
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#undef regcomp
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#undef regexec
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#undef regerror
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#undef regfree
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#define pcre2_regcomp regcomp
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#define pcre2_regexec regexec
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#define pcre2_regerror regerror
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#define pcre2_regfree regfree
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#include "src/pcre2posix.c"
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#include "src/pcre2_auto_possess.c"
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#include "src/pcre2_chartables.c.dist"
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#include "src/pcre2_chkdint.c"
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#include "src/pcre2_compile.c"
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#include "src/pcre2_context.c"
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#include "src/pcre2_extuni.c"
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#include "src/pcre2_find_bracket.c"
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#include "src/pcre2_match.c"
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#include "src/pcre2_match_data.c"
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#include "src/pcre2_newline.c"
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#include "src/pcre2_ord2utf.c"
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#include "src/pcre2_pattern_info.c"
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#include "src/pcre2_script_run.c"
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#include "src/pcre2_string_utils.c"
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#include "src/pcre2_study.c"
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#include "src/pcre2_tables.c"
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#include "src/pcre2_ucd.c"
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#include "src/pcre2_valid_utf.c"
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#include "src/pcre2_xclass.c"

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