Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2# Makefile for nolibc installation and tests
3include ../../scripts/Makefile.include
4
5# we're in ".../tools/include/nolibc"
6ifeq ($(srctree),)
7srctree := $(patsubst %/tools/include/,%,$(dir $(CURDIR)))
8endif
9
10nolibc_arch := $(patsubst arm64,aarch64,$(ARCH))
11arch_file := arch-$(nolibc_arch).h
12all_files := ctype.h errno.h nolibc.h signal.h std.h stdio.h stdlib.h string.h \
13 sys.h time.h types.h unistd.h
14
15# install all headers needed to support a bare-metal compiler
16all:
17
18# Note: when ARCH is "x86" we concatenate both x86_64 and i386
19headers:
20 $(Q)mkdir -p $(OUTPUT)sysroot
21 $(Q)mkdir -p $(OUTPUT)sysroot/include
22 $(Q)cp $(all_files) $(OUTPUT)sysroot/include/
23 $(Q)if [ "$(ARCH)" = "x86" ]; then \
24 sed -e \
25 's,^#ifndef _NOLIBC_ARCH_X86_64_H,#if !defined(_NOLIBC_ARCH_X86_64_H) \&\& defined(__x86_64__),' \
26 arch-x86_64.h; \
27 sed -e \
28 's,^#ifndef _NOLIBC_ARCH_I386_H,#if !defined(_NOLIBC_ARCH_I386_H) \&\& !defined(__x86_64__),' \
29 arch-i386.h; \
30 elif [ -e "$(arch_file)" ]; then \
31 cat $(arch_file); \
32 else \
33 echo "Fatal: architecture $(ARCH) not yet supported by nolibc." >&2; \
34 exit 1; \
35 fi > $(OUTPUT)sysroot/include/arch.h
36
37headers_standalone: headers
38 $(Q)$(MAKE) -C $(srctree) headers
39 $(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)/sysroot
40
41clean:
42 $(call QUIET_CLEAN, nolibc) rm -rf "$(OUTPUT)sysroot"