1 # SPDX-License-Identifier: GPL-2.0
2 # Makefile for nolibc installation and tests
3 include ../../scripts/Makefile.include
5 # we're in ".../tools/include/nolibc"
7 srctree := $(patsubst %/tools/include/,%,$(dir $(CURDIR)))
10 # when run as make -C tools/ nolibc_<foo> the arch is not set
12 include $(srctree)/scripts/subarch.include
16 # OUTPUT is only set when run from the main makefile, otherwise
17 # it defaults to this nolibc directory.
26 nolibc_arch := $(patsubst arm64,aarch64,$(ARCH))
27 arch_file := arch-$(nolibc_arch).h
48 # install all headers needed to support a bare-metal compiler
54 @echo "Supported targets under nolibc:"
55 @echo " all call \"headers\""
56 @echo " clean clean the sysroot"
57 @echo " headers prepare a sysroot in tools/include/nolibc/sysroot"
58 @echo " headers_standalone like \"headers\", and also install kernel headers"
59 @echo " help this help"
61 @echo "These targets may also be called from tools as \"make nolibc_<target>\"."
63 @echo "Currently using the following variables:"
64 @echo " ARCH = $(ARCH)"
65 @echo " OUTPUT = $(OUTPUT)"
68 # Note: when ARCH is "x86" we concatenate both x86_64 and i386
70 $(Q)mkdir -p $(OUTPUT)sysroot
71 $(Q)mkdir -p $(OUTPUT)sysroot/include
72 $(Q)cp $(all_files) $(OUTPUT)sysroot/include/
73 $(Q)if [ "$(ARCH)" = "x86" ]; then \
75 's,^#ifndef _NOLIBC_ARCH_X86_64_H,#if !defined(_NOLIBC_ARCH_X86_64_H) \&\& defined(__x86_64__),' \
78 's,^#ifndef _NOLIBC_ARCH_I386_H,#if !defined(_NOLIBC_ARCH_I386_H) \&\& !defined(__x86_64__),' \
80 elif [ -e "$(arch_file)" ]; then \
83 echo "Fatal: architecture $(ARCH) not yet supported by nolibc." >&2; \
85 fi > $(OUTPUT)sysroot/include/arch.h
87 headers_standalone: headers
88 $(Q)$(MAKE) -C $(srctree) headers
89 $(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)sysroot
92 $(call QUIET_CLEAN, nolibc) rm -rf "$(OUTPUT)sysroot"