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Do not accidentally include in-tree readline headers

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PR build/17077 points out that when --with-system-readline is given,
gdb will still pick up the in-tree readline headers.  Normally this is
not a big problem, because readline is very stable and so the ABI does
not change much; but it is clearly a bug to do this, and could bite at
some point.

The basic problem is that OPCODES_CFLAGS uses -I$(OPCODES_SRC)/..  so
that #include "opcodes/..." works.  However, this also makes it so the

This patch fixes the problem in a mildly hacky way: remove the
offending -I option, and change gdb to use #include "../opcodes/..."
instead.  This continues to make it clear where the header comes from,
without allowing incorrect behavior.

Tested by rebuilding and then looking at the *.Po files.

gdb/ChangeLog
2018-10-06  Tom Tromey  <tom@tromey.com>

	PR build/17077:
	* Makefile.in (OPCODES_CFLAGS): Remove "-I$(OPCODES_SRC)/..".
	* arc-tdep.c, frv-tdep.c, lm32-tdep.c, mep-tdep.c,
	microblaze-tdep.c, or1k-tdep.h: Use ../opcodes, not opcodes, in
	#include.
This commit is contained in:
Tom Tromey
2018-09-26 06:54:17 -06:00
parent 2a8be20359
commit a8a5dbcab8
8 changed files with 18 additions and 11 deletions
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2
gdb/arc-tdep.c
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@@ -33,7 +33,7 @@
/* ARC header files. */
#include "opcode/arc.h"
#include "opcodes/arc-dis.h"
#include "../opcodes/arc-dis.h"
#include "arc-tdep.h"
/* Standard headers. */