mirror of
git://git.code.sf.net/p/cdesktopenv/code
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3de4da5afb
Windows/Cygwin requires onerous special handling and the definition of additional _imp__* symbols to import/export symbols between dynamically linked binaries. Its support in AST used a lot of macros and code obfuscation. In the features/common test for this, AT&T called this the "Microsoft import/export nonsense". They're right, it's nonsense. Somehow, Microsoft's POSIX layer, SFU/Interix, always managed without it. No one has time to maintain this (especially considering how incredibly sluggish Cygwin is). And in fact, it had already fallen victim to bit rot; I confirmed this in my early experiments with reintroducing dynamic library support. No one has time to fix it, either. So, my apologies to any Cygwin fans; ksh 93u+m will never support dynamically loadable built-ins on Cygwin, even when I do manage to reintroduce dynamic linking properly.
111 lines
3.1 KiB
Bash
111 lines
3.1 KiB
Bash
########################################################################
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# #
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# This software is part of the ast package #
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# Copyright (c) 1985-2011 AT&T Intellectual Property #
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# Copyright (c) 2020-2022 Contributors to ksh 93u+m #
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# and is licensed under the #
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# Eclipse Public License, Version 1.0 #
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# by AT&T Intellectual Property #
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# #
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# A copy of the License is available at #
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# http://www.eclipse.org/org/documents/epl-v10.html #
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# (with md5 checksum b35adb5213ca9657e911e9befb180842) #
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# #
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# Information and Software Systems Research #
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# AT&T Research #
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# Florham Park NJ #
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# #
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# Glenn Fowler <gsf@research.att.com> #
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# David Korn <dgk@research.att.com> #
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# Phong Vo <kpv@research.att.com> #
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# #
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########################################################################
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: generate sig features
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case $ZSH_VERSION in
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?*) emulate ksh ;;
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*) (command set -o posix) 2>/dev/null && set -o posix ;;
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esac
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case $# in
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0) ;;
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*) eval $1
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shift
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;;
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esac
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echo "#include <signal.h>
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int xxx;" > $tmp.c
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$cc -c $tmp.c >/dev/null 2>$tmp.e
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echo "#define sig_info _sig_info_
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#define kill ______kill
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#define killpg ______killpg
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#include <signal.h>
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#undef kill
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#undef killpg
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#ifndef sigmask
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#define sigmask(s) (1<<((s)-1))
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#endif"
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echo "#include <signal.h>
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#ifdef TYPE
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typedef TYPE (*Sig_handler_t)(ARG);
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#endif
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Sig_handler_t f()
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{
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Sig_handler_t handler;
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handler = signal(1, SIG_IGN);
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return(handler);
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}" > $tmp.c
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if $cc -c $tmp.c >/dev/null
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then :
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else e=`wc -l $tmp.e`
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i1= j1=
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for i in void int
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do for j in int,... ... int
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do $cc -c -DTYPE=$i -DARG=$j $tmp.c >/dev/null 2>$tmp.e || continue
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case `wc -l $tmp.e` in
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$e) i1= j1=; break 2 ;;
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esac
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case $i1 in
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"") i1=$i j1=$j ;;
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esac
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done
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done
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case $i1 in
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?*) i=$i1 j=$j1 ;;
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esac
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echo "typedef $i (*Sig_handler_t)($j);"
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fi
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echo '
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#define Handler_t Sig_handler_t
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#define SIG_REG_PENDING (-1)
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#define SIG_REG_POP 0
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#define SIG_REG_EXEC 00001
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#define SIG_REG_PROC 00002
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#define SIG_REG_TERM 00004
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#define SIG_REG_ALL 00777
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#define SIG_REG_SET 01000
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typedef struct
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{
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char** name;
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char** text;
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int sigmax;
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} Sig_info_t;
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extern int kill(pid_t, int);
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extern int killpg(pid_t, int);
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extern Sig_info_t sig_info;
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#if _lib_sigflag && _npt_sigflag
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extern int sigflag(int, int, int);
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#endif
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#if !_lib_sigflag
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extern int sigflag(int, int, int);
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#endif
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extern int sigcritical(int);
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extern int sigunblock(int);'
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