368d060bb4
- detect missing include guard in UAPI headers - do not create orphan built-in.a or obj-y objects - generate modules.builtin more simply, and drop tristate.conf - simplify built-in initramfs creation - make linux-headers deb package thinner - optimize the deb package build script - misc cleanups -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAl409uwVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsG6vAP/jky7LSuv6lpIcYhxOmzFfs7qTlA llZDmzTPi26/doV1P9LYMw6Pd4HV6Zeo/aFLolirCsp0kFBW/5b2C68OsXfotJOD 0YxPeFMIsumsmAVdQ7lGQerS19BDcMrFJiKoLUuULH3bH0mjL/YVlFVg0Dmq77j1 PDsyTihROajVmJBf8UMK65nUdCSLZihBsKyvj7SxYnlHAS1EaAT+RiwE7qAHoYW9 C3TYwOa1e8u/0FmosKxSChl9Pq5ti/gcK4dVLs7bm4LmJEsqmLeR8BDM8xlaT/FE lFl7iPLO2cvhy76NsK8YBnTcRD445gBn+M3XFKZ3sDTVj7TkdaIWtVurf5IYo+BN bTJHac1E9nbpv6L7QIXhxLCGozEi0+pv/8pyhIrAv8XxmZXp7HJbon+siEg8Glez rbwM44kNPQk8xovVcoixh4+qRH9l49+zzT0h0kY1PWfJ6hp0D1xmG/v3kai8dErt X4w7xi5gOssYwZ5M0LuOQprDeL5DV/Caz5R1+maqVb2yhn2EBsJ6wC24/vawxhFj Kjx1g/NZIW4lnBrF1Ay4geF+f+0jd1bcTBqtNmC09uSTIBvEysZ3HNBf4Z9PFTGW jdQ7Qpowgy9SOLqZuE+OAuojq7xhfm1fkm/MBUFUYh/HKOXoiLAnVK1+x0BM0yJB ZhMwvmj9fKoqVpzx =i/xZ -----END PGP SIGNATURE----- Merge tag 'kbuild-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - detect missing include guard in UAPI headers - do not create orphan built-in.a or obj-y objects - generate modules.builtin more simply, and drop tristate.conf - simplify built-in initramfs creation - make linux-headers deb package thinner - optimize the deb package build script - misc cleanups * tag 'kbuild-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits) builddeb: split libc headers deployment out into a function builddeb: split kernel headers deployment out into a function builddeb: remove redundant make for ARCH=um builddeb: avoid invoking sub-shells where possible builddeb: remove redundant $objtree/ builddeb: match temporary directory name to the package name builddeb: remove unneeded files in hdrobjfiles for headers package kbuild: use -S instead of -E for precise cc-option test in Kconfig builddeb: allow selection of .deb compressor kbuild: remove 'Building modules, stage 2.' log kbuild: remove *.tmp file when filechk fails kbuild: remove PYTHON2 variable modpost: assume STT_SPARC_REGISTER is defined gen_initramfs.sh: remove intermediate cpio_list on errors initramfs: refactor the initramfs build rules gen_initramfs.sh: always output cpio even without -o option initramfs: add default_cpio_list, and delete -d option support initramfs: generate dependency list and cpio at the same time initramfs: specify $(src)/gen_initramfs.sh as a prerequisite in Makefile initramfs: make initramfs compression choice non-optional ...
47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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# Kconfig helper macros
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# Convenient variables
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comma := ,
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quote := "
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squote := '
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empty :=
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space := $(empty) $(empty)
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dollar := $
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right_paren := )
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left_paren := (
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# $(if-success,<command>,<then>,<else>)
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# Return <then> if <command> exits with 0, <else> otherwise.
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if-success = $(shell,{ $(1); } >/dev/null 2>&1 && echo "$(2)" || echo "$(3)")
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# $(success,<command>)
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# Return y if <command> exits with 0, n otherwise
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success = $(if-success,$(1),y,n)
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# $(failure,<command>)
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# Return n if <command> exits with 0, y otherwise
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failure = $(if-success,$(1),n,y)
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# $(cc-option,<flag>)
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# Return y if the compiler supports <flag>, n otherwise
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cc-option = $(success,$(CC) -Werror $(CLANG_FLAGS) $(1) -S -x c /dev/null -o /dev/null)
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# $(ld-option,<flag>)
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# Return y if the linker supports <flag>, n otherwise
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ld-option = $(success,$(LD) -v $(1))
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# $(as-instr,<instr>)
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# Return y if the assembler supports <instr>, n otherwise
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as-instr = $(success,printf "%b\n" "$(1)" | $(CC) $(CLANG_FLAGS) -c -x assembler -o /dev/null -)
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# check if $(CC) and $(LD) exist
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$(error-if,$(failure,command -v $(CC)),compiler '$(CC)' not found)
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$(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found)
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# Fail if the linker is gold as it's not capable of linking the kernel proper
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$(error-if,$(success, $(LD) -v | grep -q gold), gold linker '$(LD)' not supported)
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# gcc version including patch level
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gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh $(CC))
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