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https://github.com/AsahiLinux/u-boot
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f8d2c65fd9
U-boot itself generally builds with -nostdinc. This is because the
bootloader needs to be completely standalone. In the sandbox arch
though, we need a little bit of code to glue the u-boot world to the
host operating system, and we need to be able to access the host
libc's headers in order to do so.
Currently, we're using -I/usr/include to workaround the global
-nostdinc, but that doesn't work for everyone and for all headers.
Instead, let's filter out -nostdinc when building the os.c code.
Without this patch, some distros hit errors such as:
---8<---
In file included from /usr/include/fcntl.h:27:0,
from os.c:22:
/usr/include/features.h:323:26: fatal error:
bits/predefs.h: No such file or directory
--->8---
Signed-off-by: Andreas Bießmann <biessmann@corscience.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
51 lines
1.5 KiB
Makefile
51 lines
1.5 KiB
Makefile
#
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# Copyright (c) 2011 The Chromium OS Authors.
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#
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# (C) Copyright 2000-2003
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# See file CREDITS for list of people who contributed to this
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# project.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program 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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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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# MA 02111-1307 USA
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#
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include $(TOPDIR)/config.mk
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LIB = $(obj)lib$(CPU).o
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COBJS := cpu.o start.o os.o
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SRCS := $(COBJS:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS))
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all: $(obj).depend $(LIB)
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$(LIB): $(OBJS)
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$(call cmd_link_o_target, $(OBJS))
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# os.c is build in the system environment, so needs standard includes
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$(obj)os.o: ALL_CFLAGS := $(filter-out -nostdinc,$(ALL_CFLAGS))
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$(obj).depend.os: CPPFLAGS := $(filter-out -nostdinc,$(CPPFLAGS))
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#########################################################################
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk
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sinclude $(obj).depend
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#########################################################################
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