1 # SPDX-License-Identifier: GPL-2.0 2 # Makefile for nolibc installation and tests 3 include ../../scripts/Makefile.include 4 5 # we're in ".../tools/include/nolibc" 6 ifeq ($(srctree),) 7 srctree := $(patsubst %/tools/include/,%,$(dir $(CURDIR))) 8 endif 9 10 # when run as make -C tools/ nolibc_<foo> the arch is not set 11 ifeq ($(ARCH),) 12 include $(srctree)/scripts/subarch.include 13 ARCH = $(SUBARCH) 14 endif 15 16 # OUTPUT is only set when run from the main makefile, otherwise 17 # it defaults to this nolibc directory. 18 OUTPUT ?= $(CURDIR)/ 19 20 ifeq ($(V),1) 21 Q= 22 else 23 Q=@ 24 endif 25 26 nolibc_arch := $(patsubst arm64,aarch64,$(ARCH)) 27 arch_file := arch-$(nolibc_arch).h 28 all_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 compiler 50 all: headers 51 52 install: help 53 54 help: 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 i386 70 headers: 71 $(Q)mkdir -p $(OUTPUT)sysroot 72 $(Q)mkdir -p $(OUTPUT)sysroot/include 73 $(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.h 87 88 headers_standalone: headers 89 $(Q)$(MAKE) -C $(srctree) headers 90 $(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)sysroot 91 92 clean: 93 $(call QUIET_CLEAN, nolibc) rm -rf "$(OUTPUT)sysroot"
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