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1# SPDX-License-Identifier: GPL-2.02# Makefile for nolibc installation and tests3include ../../scripts/Makefile.include4 5# we're in ".../tools/include/nolibc"6ifeq ($(srctree),)7srctree := $(patsubst %/tools/include/,%,$(dir $(CURDIR)))8endif9 10# when run as make -C tools/ nolibc_<foo> the arch is not set11ifeq ($(ARCH),)12include $(srctree)/scripts/subarch.include13ARCH = $(SUBARCH)14endif15 16# OUTPUT is only set when run from the main makefile, otherwise17# it defaults to this nolibc directory.18OUTPUT ?= $(CURDIR)/19 20ifeq ($(V),1)21Q=22else23Q=@24endif25 26nolibc_arch := $(patsubst arm64,aarch64,$(ARCH))27arch_file := arch-$(nolibc_arch).h28all_files := \29 compiler.h \30 crt.h \31 ctype.h \32 errno.h \33 nolibc.h \34 signal.h \35 stackprotector.h \36 std.h \37 stdarg.h \38 stdbool.h \39 stdint.h \40 stdlib.h \41 string.h \42 sys.h \43 time.h \44 types.h \45 unistd.h \46 stdio.h \47 48 49# install all headers needed to support a bare-metal compiler50all: headers51 52install: help53 54help:55 @echo "Supported targets under nolibc:"56 @echo " all call \"headers\""57 @echo " clean clean the sysroot"58 @echo " headers prepare a sysroot in tools/include/nolibc/sysroot"59 @echo " headers_standalone like \"headers\", and also install kernel headers"60 @echo " help this help"61 @echo ""62 @echo "These targets may also be called from tools as \"make nolibc_<target>\"."63 @echo ""64 @echo "Currently using the following variables:"65 @echo " ARCH = $(ARCH)"66 @echo " OUTPUT = $(OUTPUT)"67 @echo ""68 69# Note: when ARCH is "x86" we concatenate both x86_64 and i38670headers:71 $(Q)mkdir -p $(OUTPUT)sysroot72 $(Q)mkdir -p $(OUTPUT)sysroot/include73 $(Q)cp $(all_files) $(OUTPUT)sysroot/include/74 $(Q)if [ "$(ARCH)" = "x86" ]; then \75 sed -e \76 's,^#ifndef _NOLIBC_ARCH_X86_64_H,#if !defined(_NOLIBC_ARCH_X86_64_H) \&\& defined(__x86_64__),' \77 arch-x86_64.h; \78 sed -e \79 's,^#ifndef _NOLIBC_ARCH_I386_H,#if !defined(_NOLIBC_ARCH_I386_H) \&\& !defined(__x86_64__),' \80 arch-i386.h; \81 elif [ -e "$(arch_file)" ]; then \82 cat $(arch_file); \83 else \84 echo "Fatal: architecture $(ARCH) not yet supported by nolibc." >&2; \85 exit 1; \86 fi > $(OUTPUT)sysroot/include/arch.h87 88headers_standalone: headers89 $(Q)$(MAKE) -C $(srctree) headers90 $(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)sysroot91 92clean:93 $(call QUIET_CLEAN, nolibc) rm -rf "$(OUTPUT)sysroot"94