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