OSCL-LXR

0001 # SPDX-License-Identifier: GPL-2.0
0002 # Makefile for nolibc installation and tests
0003 include ../../scripts/Makefile.include
0004
0005 # we're in ".../tools/include/nolibc"
0006 ifeq ($(srctree),)
0007 srctree := $(patsubst %/tools/include/,%,$(dir $(CURDIR)))
0008 endif
0009
0010 # when run as make -C tools/ nolibc_<foo> the arch is not set
0011 ifeq ($(ARCH),)
0012 include $(srctree)/scripts/subarch.include
0013 ARCH = $(SUBARCH)
0014 endif
0015
0016 # OUTPUT is only set when run from the main makefile, otherwise
0017 # it defaults to this nolibc directory.
0018 OUTPUT ?= $(CURDIR)/
0019
0020 ifeq ($(V),1)
0021 Q=
0022 else
0023 Q=@
0024 endif
0025
0026 nolibc_arch := $(patsubst arm64,aarch64,$(ARCH))
0027 arch_file := arch-$(nolibc_arch).h
0028 all_files := ctype.h errno.h nolibc.h signal.h std.h stdio.h stdlib.h string.h \
0029              sys.h time.h types.h unistd.h
0030
0031 # install all headers needed to support a bare-metal compiler
0032 all: headers
0033
0034 install: help
0035
0036 help:
0037         @echo "Supported targets under nolibc:"
0038         @echo "  all                 call \"headers\""
0039         @echo "  clean               clean the sysroot"
0040         @echo "  headers             prepare a sysroot in tools/include/nolibc/sysroot"
0041         @echo "  headers_standalone  like \"headers\", and also install kernel headers"
0042         @echo "  help                this help"
0043         @echo ""
0044         @echo "These targets may also be called from tools as \"make nolibc_<target>\"."
0045         @echo ""
0046         @echo "Currently using the following variables:"
0047         @echo "  ARCH    = $(ARCH)"
0048         @echo "  OUTPUT  = $(OUTPUT)"
0049         @echo ""
0050
0051 # Note: when ARCH is "x86" we concatenate both x86_64 and i386
0052 headers:
0053         $(Q)mkdir -p $(OUTPUT)sysroot
0054         $(Q)mkdir -p $(OUTPUT)sysroot/include
0055         $(Q)cp $(all_files) $(OUTPUT)sysroot/include/
0056         $(Q)if [ "$(ARCH)" = "x86" ]; then      \
0057                 sed -e                          \
0058                   's,^#ifndef _NOLIBC_ARCH_X86_64_H,#if !defined(_NOLIBC_ARCH_X86_64_H) \&\& defined(__x86_64__),' \
0059                   arch-x86_64.h;                \
0060                 sed -e                          \
0061                   's,^#ifndef _NOLIBC_ARCH_I386_H,#if !defined(_NOLIBC_ARCH_I386_H) \&\& !defined(__x86_64__),' \
0062                   arch-i386.h;                  \
0063         elif [ -e "$(arch_file)" ]; then        \
0064                 cat $(arch_file);               \
0065         else                                    \
0066                 echo "Fatal: architecture $(ARCH) not yet supported by nolibc." >&2; \
0067                 exit 1;                         \
0068         fi > $(OUTPUT)sysroot/include/arch.h
0069
0070 headers_standalone: headers
0071         $(Q)$(MAKE) -C $(srctree) headers
0072         $(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)sysroot
0073
0074 clean:
0075         $(call QUIET_CLEAN, nolibc) rm -rf "$(OUTPUT)sysroot"