8sa1-gcc/gcc/config/t-vxworks
Alexandre Oliva cecf8c662d robustify vxworks glimits.h overriding
The glimits.h overriding used in gcc/config/t-vxworks was fragile: the
intermediate file would already be there in a rebuild, and so the
adjustments would not be made, so the generated limits.h would miss
them, causing limits-width-[12] tests to fail on that target.

While changing it, I also replaced the modern $(cmd) shell syntax with
the more portable `cmd` construct.


for  gcc/ChangeLog

	* Makefile.in (T_GLIMITS_H): New.
	(stmp-int-hdrs): Depend on it, use it.
	* config/t-vxworks (T_GLIMITS_H): Override it.
	(vxw-glimits.h): New.
2021-01-06 08:05:35 -03:00

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# Copyright (C) 2002-2021 Free Software Foundation, Inc.
#
# This file is part of GCC.
#
# GCC is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GCC is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
vxworks.o: $(srcdir)/config/vxworks.c
$(COMPILE) $<
$(POSTCOMPILE)
vxworks-c.o: $(srcdir)/config/vxworks-c.c
$(COMPILE) $<
$(POSTCOMPILE)
# Arrange to install our stdint.h wrapper, by copying it in the
# build-time include dir before this include dir is installed and after
# stmp-int-hdrs removes it (because it was told we don't provide it).
INSTALL_HEADERS += install-stdint.h
install-stdint.h: stmp-int-hdrs
cp -p $(srcdir)/config/vxworks/stdint.h include/stdint.h
chmod a+r include/stdint.h
$(INSTALL_HEADERS_DIR): install-stdint.h
# Both the kernel and RTP headers provide limits.h. They embed VxWorks
# specificities and are dated on some configurations so we both need to
# provide our own version and make sure the system one gets exposed.
LIMITS_H_TEST = true
STMP_FIXINC = stmp-fixinc
# VxWorks system environments have been GCC based for a long time and
# we need to make sure that our files and the system ones use distinct
# macro names to protect against recursive inclusions. We achieve
# this by modifying the GLIMITS_H fragment that goes into limits.h
# with some version indication in the inclusion-protection macro
# names.
T_GLIMITS_H = vxw-glimits.h
vxw-glimits.h: $(srcdir)/glimits.h
ID=`echo $(BASEVER_c) | sed -e 's/\./_/g'` && \
sed -e "s/_LIMITS_H__/_LIMITS_H__$${ID}_/" < $(srcdir)/glimits.h > $@T
mv $@T $@