forked from Imagelibrary/binutils-gdb
6999161a2a
readline turns out to be a bit of a stumbling block for the project to
move gdbsupport (and then gdbserver) to the top-level.
The issue is that readline headers are intended to be included with
names like "readline/readline.h". To support this, gdb effectively
adds a -I option pointing to the top-level source directory -- but,
importantly, this option is not used when the system readline is used.
For gdbsupport, a -I option like this would always be needed, but that
in turn would break the system readline case. This was PR build/17077,
fixed in commit a8a5dbcab8.
Previously, we had discussed this on the gdb-patches list in terms of
removing readline from the tree
https://sourceware.org/ml/gdb-patches/2019-09/msg00317.html
However, Eli expressed some concerns, and Joel did as well (off-list).
Given those concerns, and the fact that a patch-free local readline is
relatively new in gdb (it was locally patched for years), I changed my
mind and decided to handle this situation by moving the readline
sources down a level.
That is, upstream readline is now in readline/readline, and the
top-level readline directory just contains the minimal configury
needed to build that.
This fixes the problem because, when gdb unconditionally adds a
-I$(top_srcdir), this will not find readline headers. A separate -I
will be needed instead, which is exactly what's needed for
--with-system-readline.
gdb/ChangeLog
2019-10-23 Tom Tromey <tom@tromey.com>
* Makefile.in (READLINE_DIR): Update.
gdb/doc/ChangeLog
2019-10-23 Tom Tromey <tom@tromey.com>
* Makefile.in (READLINE_DIR): Update.
readline/ChangeLog
2019-10-23 Tom Tromey <tom@tromey.com>
Move old contents to readline/ subdirectory.
* aclocal.m4, configure, configure.ac, .gitignore, Makefile.am,
Makefile.in, README: New files.
Change-Id: Ice156a2ee09ea68722b48f64d97146d7428ea9e4
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* posixjmp.h -- wrapper for setjmp.h with changes for POSIX systems. */
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/* Copyright (C) 1987,1991-2015 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash 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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Bash 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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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _POSIXJMP_H_
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#define _POSIXJMP_H_
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#include <setjmp.h>
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/* This *must* be included *after* config.h */
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#if defined (HAVE_POSIX_SIGSETJMP)
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# define procenv_t sigjmp_buf
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# define setjmp_nosigs(x) sigsetjmp((x), 0)
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# define setjmp_sigs(x) sigsetjmp((x), 1)
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# define _rl_longjmp(x, n) siglongjmp((x), (n))
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# define sh_longjmp(x, n) siglongjmp((x), (n))
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#else
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# define procenv_t jmp_buf
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# define setjmp_nosigs setjmp
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# define setjmp_sigs setjmp
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# define _rl_longjmp(x, n) longjmp((x), (n))
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# define sh_longjmp(x, n) longjmp((x), (n))
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#endif
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#endif /* _POSIXJMP_H_ */
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