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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-02-16 23:36:09 -05:00
1868c027b6
The efforts we go through by installing a single arch are counter productive when the base directory already supports them all, and the arch-specific files are really small. Let's make the "headers" target simply install headers for all supported archs and stop trying to build a hybrid "arch.h" file on the fly, to instead keep the generic one. Now the same nolibc headers installation will be usable with any arch-specific uapi installation. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
114 lines
2.5 KiB
Makefile
114 lines
2.5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Makefile for nolibc installation and tests
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include ../../scripts/Makefile.include
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# we're in ".../tools/include/nolibc"
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ifeq ($(srctree),)
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srctree := $(patsubst %/tools/include/,%,$(dir $(CURDIR)))
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endif
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# when run as make -C tools/ nolibc_<foo> the arch is not set
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ifeq ($(ARCH),)
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include $(srctree)/scripts/subarch.include
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ARCH = $(SUBARCH)
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endif
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# OUTPUT is only set when run from the main makefile, otherwise
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# it defaults to this nolibc directory.
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OUTPUT ?= $(CURDIR)/
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ifeq ($(V),1)
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Q=
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else
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Q=@
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endif
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arch_files := arch.h $(wildcard arch-*.h)
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all_files := \
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compiler.h \
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crt.h \
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ctype.h \
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dirent.h \
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elf.h \
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errno.h \
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fcntl.h \
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getopt.h \
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inttypes.h \
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limits.h \
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math.h \
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nolibc.h \
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poll.h \
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sched.h \
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signal.h \
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stackprotector.h \
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std.h \
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stdarg.h \
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stdbool.h \
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stddef.h \
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stdint.h \
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stdlib.h \
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string.h \
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sys.h \
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sys/auxv.h \
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sys/ioctl.h \
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sys/mman.h \
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sys/mount.h \
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sys/prctl.h \
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sys/random.h \
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sys/reboot.h \
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sys/resource.h \
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sys/select.h \
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sys/stat.h \
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sys/syscall.h \
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sys/sysmacros.h \
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sys/time.h \
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sys/timerfd.h \
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sys/types.h \
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sys/uio.h \
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sys/utsname.h \
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sys/wait.h \
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time.h \
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types.h \
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unistd.h \
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stdio.h \
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# install all headers needed to support a bare-metal compiler
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all: headers
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install: help
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help:
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@echo "Supported targets under nolibc:"
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@echo " all call \"headers\""
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@echo " clean clean the sysroot"
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@echo " headers prepare a multi-arch sysroot in \$${OUTPUT}sysroot"
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@echo " headers_standalone like \"headers\", and also install kernel headers"
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@echo " help this help"
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@echo ""
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@echo "These targets may also be called from tools as \"make nolibc_<target>\"."
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@echo ""
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@echo "Currently using the following variables:"
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@echo " ARCH = $(ARCH)"
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@echo " OUTPUT = $(OUTPUT)"
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@echo ""
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# installs headers for all archs at once.
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headers:
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$(Q)mkdir -p "$(OUTPUT)sysroot"
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$(Q)mkdir -p "$(OUTPUT)sysroot/include"
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$(Q)cp --parents $(arch_files) $(all_files) "$(OUTPUT)sysroot/include/"
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headers_standalone: headers
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$(Q)$(MAKE) -C $(srctree) headers
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$(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)sysroot
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headers_check: headers_standalone
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$(Q)for header in $(filter-out crt.h std.h,$(all_files)); do \
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$(CC) $(CLANG_CROSS_FLAGS) -Wall -Werror -nostdinc -fsyntax-only -x c /dev/null \
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-I$(or $(objtree),$(srctree))/usr/include -include $$header -include $$header || exit 1; \
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done
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clean:
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$(call QUIET_CLEAN, nolibc) rm -rf "$(OUTPUT)sysroot"
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