76 lines
2.4 KiB
Makefile
76 lines
2.4 KiB
Makefile
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# SPDX-License-Identifier: GPL-2.0
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# Makefile for nolibc installation and tests
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include ../../scripts/Makefile.include
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# we're in ".../tools/include/nolibc"
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ifeq ($(srctree),)
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srctree := $(patsubst %/tools/include/,%,$(dir $(CURDIR)))
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endif
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# when run as make -C tools/ nolibc_<foo> the arch is not set
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ifeq ($(ARCH),)
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include $(srctree)/scripts/subarch.include
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ARCH = $(SUBARCH)
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endif
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# OUTPUT is only set when run from the main makefile, otherwise
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# it defaults to this nolibc directory.
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OUTPUT ?= $(CURDIR)/
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ifeq ($(V),1)
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Q=
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else
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Q=@
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endif
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nolibc_arch := $(patsubst arm64,aarch64,$(ARCH))
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arch_file := arch-$(nolibc_arch).h
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all_files := ctype.h errno.h nolibc.h signal.h std.h stdio.h stdlib.h string.h \
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sys.h time.h types.h unistd.h
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# install all headers needed to support a bare-metal compiler
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all: headers
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install: help
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help:
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@echo "Supported targets under nolibc:"
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@echo " all call \"headers\""
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@echo " clean clean the sysroot"
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@echo " headers prepare a sysroot in tools/include/nolibc/sysroot"
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@echo " headers_standalone like \"headers\", and also install kernel headers"
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@echo " help this help"
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@echo ""
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@echo "These targets may also be called from tools as \"make nolibc_<target>\"."
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@echo ""
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@echo "Currently using the following variables:"
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@echo " ARCH = $(ARCH)"
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@echo " OUTPUT = $(OUTPUT)"
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@echo ""
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# Note: when ARCH is "x86" we concatenate both x86_64 and i386
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headers:
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$(Q)mkdir -p $(OUTPUT)sysroot
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$(Q)mkdir -p $(OUTPUT)sysroot/include
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$(Q)cp $(all_files) $(OUTPUT)sysroot/include/
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$(Q)if [ "$(ARCH)" = "x86" ]; then \
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sed -e \
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's,^#ifndef _NOLIBC_ARCH_X86_64_H,#if !defined(_NOLIBC_ARCH_X86_64_H) \&\& defined(__x86_64__),' \
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arch-x86_64.h; \
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sed -e \
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's,^#ifndef _NOLIBC_ARCH_I386_H,#if !defined(_NOLIBC_ARCH_I386_H) \&\& !defined(__x86_64__),' \
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arch-i386.h; \
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elif [ -e "$(arch_file)" ]; then \
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cat $(arch_file); \
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else \
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echo "Fatal: architecture $(ARCH) not yet supported by nolibc." >&2; \
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exit 1; \
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fi > $(OUTPUT)sysroot/include/arch.h
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headers_standalone: headers
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$(Q)$(MAKE) -C $(srctree) headers
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$(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)sysroot
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clean:
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$(call QUIET_CLEAN, nolibc) rm -rf "$(OUTPUT)sysroot"
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