From: Elliott Mitchell <ehem+linux@m5p.com>
To: masahiroy@kernel.org, nathan@kernel.org, nicolas@fjasle.eu
Cc: linux-kbuild@vger.kernel.org
Subject: [PATCH RFC 0/3] Adding trailing slash to $(srctree)
Date: Tue, 20 Feb 2024 17:23:11 -0800 [thread overview]
Message-ID: <cover.1708478591.git.ehem+linux@m5p.com> (raw)
The subject states exactly what I'm suggesting.
The reason is the fallback value for $(srctree) of "." doesn't work
properly in several places under some conditions. In particular in
several places a pattern of "$(srctree)/$(src)" is used. If $(srctree)
ends up with the value "." and $(src) ends up with the value `pwd`, the
build breaks. This can be triggered via in-tree/out-of-tree build
mechanisms.
As such, assuming $(srctree) includes the trailing slash and setting
the fallback for $(srctree) to "" fixes things. This is untested, I'm
proposing this since I wanted to use a build approach which triggers
this. This is really a single patch, but it has been split into 3 to
emphasize where the real work is done.
I'm suspicious of the fallback settings of $(srctree) found in several
Makefiles. This might be a distinct workaround for the same situation.
I was wondering about adjusting some of those comments too. I think
$(src) needs similar treatment, but that is rather messier.
Note, this is basically untested. I'm hopeful this actually works, but
if it breaks then this was mostly to alert the maintainers of this
troublesome condition.
Elliott Mitchell (3):
build: add trailing slash to $(srctree)
build: modify uses of $(srctree) to assume trailing slash
build: change $(srctree) to empty for current directory
Documentation/Makefile | 48 +++---
Documentation/devicetree/bindings/Makefile | 18 +--
Documentation/userspace-api/media/Makefile | 10 +-
Makefile | 152 +++++++++---------
arch/alpha/boot/Makefile | 2 +-
arch/alpha/kernel/syscalls/Makefile | 4 +-
arch/arc/Makefile | 2 +-
arch/arc/boot/dts/Makefile | 2 +-
arch/arm/Makefile | 4 +-
arch/arm/boot/Makefile | 2 +-
arch/arm/boot/compressed/Makefile | 2 +-
arch/arm/mach-dove/Makefile | 2 +-
arch/arm/mach-mv78xx0/Makefile | 2 +-
arch/arm/mach-mvebu/Makefile | 2 +-
arch/arm/mach-orion5x/Makefile | 2 +-
arch/arm/mach-s3c/Makefile | 2 +-
arch/arm/plat-orion/Makefile | 2 +-
arch/arm/tools/Makefile | 6 +-
arch/arm/vdso/Makefile | 2 +-
arch/arm64/Makefile | 2 +-
arch/arm64/boot/Makefile | 2 +-
arch/arm64/kernel/pi/Makefile | 6 +-
arch/arm64/kernel/vdso/Makefile | 4 +-
arch/arm64/kernel/vdso32/Makefile | 2 +-
arch/arm64/kvm/Makefile | 6 +-
arch/arm64/kvm/hyp/Makefile | 2 +-
arch/csky/Makefile | 2 +-
arch/csky/boot/dts/Makefile | 2 +-
arch/csky/kernel/vdso/Makefile | 4 +-
arch/loongarch/boot/Makefile | 2 +-
arch/loongarch/kvm/Makefile | 4 +-
arch/loongarch/vdso/Makefile | 4 +-
arch/m68k/kernel/syscalls/Makefile | 4 +-
arch/microblaze/kernel/syscalls/Makefile | 4 +-
arch/mips/Makefile | 18 +--
arch/mips/Makefile.postlink | 2 +-
arch/mips/boot/Makefile | 2 +-
arch/mips/boot/compressed/Makefile | 4 +-
arch/mips/kernel/syscalls/Makefile | 6 +-
arch/mips/kvm/Makefile | 2 +-
arch/mips/vdso/Makefile | 6 +-
arch/nios2/boot/dts/Makefile | 2 +-
arch/parisc/Makefile | 4 +-
arch/parisc/kernel/syscalls/Makefile | 4 +-
arch/parisc/kernel/vdso32/Makefile | 2 +-
arch/parisc/kernel/vdso64/Makefile | 2 +-
arch/powerpc/Makefile | 30 ++--
arch/powerpc/Makefile.postlink | 10 +-
arch/powerpc/boot/Makefile | 32 ++--
arch/powerpc/boot/dts/Makefile | 2 +-
arch/powerpc/boot/dts/fsl/Makefile | 2 +-
arch/powerpc/kernel/syscalls/Makefile | 4 +-
arch/powerpc/kernel/vdso/Makefile | 6 +-
arch/powerpc/kvm/Makefile | 2 +-
arch/powerpc/platforms/cell/spufs/Makefile | 4 +-
arch/riscv/Makefile | 12 +-
arch/riscv/Makefile.postlink | 4 +-
arch/riscv/boot/Makefile | 2 +-
arch/riscv/kernel/compat_vdso/Makefile | 2 +-
arch/riscv/kernel/pi/Makefile | 8 +-
arch/riscv/kernel/vdso/Makefile | 4 +-
arch/riscv/kvm/Makefile | 4 +-
arch/riscv/purgatory/Makefile | 16 +-
arch/s390/Makefile | 2 +-
arch/s390/boot/Makefile | 2 +-
arch/s390/kernel/syscalls/Makefile | 4 +-
arch/s390/kernel/vdso32/Makefile | 4 +-
arch/s390/kernel/vdso64/Makefile | 4 +-
arch/s390/kvm/Makefile | 2 +-
arch/s390/purgatory/Makefile | 4 +-
arch/s390/tools/Makefile | 2 +-
arch/sh/Makefile | 2 +-
arch/sh/kernel/syscalls/Makefile | 4 +-
arch/sparc/kernel/syscalls/Makefile | 4 +-
arch/sparc/vdso/Makefile | 4 +-
arch/um/Makefile | 22 +--
arch/um/drivers/Makefile | 2 +-
arch/um/kernel/Makefile | 4 +-
arch/um/kernel/skas/Makefile | 2 +-
arch/um/os-Linux/Makefile | 2 +-
arch/um/os-Linux/drivers/Makefile | 2 +-
arch/um/os-Linux/skas/Makefile | 2 +-
arch/um/scripts/Makefile.rules | 2 +-
arch/x86/Makefile | 6 +-
arch/x86/Makefile.postlink | 2 +-
arch/x86/Makefile.um | 2 +-
arch/x86/boot/Makefile | 6 +-
arch/x86/boot/compressed/Makefile | 6 +-
arch/x86/entry/syscalls/Makefile | 8 +-
arch/x86/entry/vdso/Makefile | 6 +-
arch/x86/kernel/Makefile | 2 +-
arch/x86/kernel/cpu/Makefile | 2 +-
arch/x86/kvm/Makefile | 4 +-
arch/x86/lib/Makefile | 4 +-
arch/x86/mm/Makefile | 2 +-
arch/x86/purgatory/Makefile | 4 +-
arch/x86/realmode/rm/Makefile | 2 +-
arch/x86/tools/Makefile | 14 +-
arch/x86/um/Makefile | 2 +-
arch/x86/um/os-Linux/Makefile | 2 +-
arch/x86/um/vdso/Makefile | 2 +-
arch/xtensa/Makefile | 2 +-
arch/xtensa/boot/boot-redboot/Makefile | 2 +-
arch/xtensa/boot/dts/Makefile | 2 +-
arch/xtensa/boot/lib/Makefile | 4 +-
arch/xtensa/kernel/syscalls/Makefile | 4 +-
certs/Makefile | 4 +-
drivers/Makefile | 2 +-
drivers/accessibility/speakup/Makefile | 2 +-
drivers/base/firmware_loader/builtin/Makefile | 2 +-
drivers/block/rnbd/Makefile | 2 +-
drivers/crypto/chelsio/Makefile | 2 +-
drivers/crypto/intel/iaa/Makefile | 2 +-
drivers/crypto/intel/qat/qat_420xx/Makefile | 2 +-
drivers/crypto/intel/qat/qat_4xxx/Makefile | 2 +-
drivers/crypto/intel/qat/qat_c3xxx/Makefile | 2 +-
drivers/crypto/intel/qat/qat_c3xxxvf/Makefile | 2 +-
drivers/crypto/intel/qat/qat_c62x/Makefile | 2 +-
drivers/crypto/intel/qat/qat_c62xvf/Makefile | 2 +-
.../crypto/intel/qat/qat_dh895xcc/Makefile | 2 +-
.../crypto/intel/qat/qat_dh895xccvf/Makefile | 2 +-
drivers/crypto/marvell/octeontx2/Makefile | 2 +-
drivers/cxl/core/Makefile | 2 +-
drivers/firmware/efi/libstub/Makefile | 6 +-
drivers/firmware/efi/libstub/Makefile.zboot | 4 +-
drivers/gpu/drm/amd/amdgpu/Makefile | 2 +-
drivers/gpu/drm/arm/display/komeda/Makefile | 4 +-
drivers/gpu/drm/i915/Makefile | 8 +-
drivers/gpu/drm/imagination/Makefile | 2 +-
drivers/gpu/drm/msm/Makefile | 8 +-
drivers/gpu/drm/xe/Makefile | 18 +--
drivers/hid/amd-sfh-hid/Makefile | 2 +-
drivers/hid/bpf/Makefile | 2 +-
drivers/hid/intel-ish-hid/Makefile | 2 +-
drivers/iio/humidity/Makefile | 2 +-
drivers/infiniband/hw/bnxt_re/Makefile | 2 +-
drivers/infiniband/hw/cxgb4/Makefile | 4 +-
drivers/infiniband/hw/hns/Makefile | 2 +-
drivers/infiniband/hw/ocrdma/Makefile | 2 +-
drivers/infiniband/hw/usnic/Makefile | 2 +-
drivers/media/common/b2c2/Makefile | 4 +-
drivers/media/dvb-frontends/Makefile | 4 +-
drivers/media/dvb-frontends/drx39xyj/Makefile | 2 +-
drivers/media/i2c/ccs/Makefile | 2 +-
drivers/media/mmc/siano/Makefile | 2 +-
drivers/media/pci/b2c2/Makefile | 2 +-
drivers/media/pci/bt8xx/Makefile | 4 +-
drivers/media/pci/cx18/Makefile | 4 +-
drivers/media/pci/cx23885/Makefile | 4 +-
drivers/media/pci/cx88/Makefile | 4 +-
drivers/media/pci/ddbridge/Makefile | 4 +-
drivers/media/pci/dm1105/Makefile | 2 +-
drivers/media/pci/ivtv/Makefile | 4 +-
drivers/media/pci/mantis/Makefile | 2 +-
drivers/media/pci/netup_unidvb/Makefile | 2 +-
drivers/media/pci/ngene/Makefile | 4 +-
drivers/media/pci/pluto2/Makefile | 2 +-
drivers/media/pci/pt1/Makefile | 4 +-
drivers/media/pci/pt3/Makefile | 4 +-
drivers/media/pci/saa7134/Makefile | 6 +-
drivers/media/pci/saa7146/Makefile | 2 +-
drivers/media/pci/saa7164/Makefile | 4 +-
drivers/media/pci/smipcie/Makefile | 4 +-
drivers/media/pci/ttpci/Makefile | 6 +-
drivers/media/platform/mediatek/mdp/Makefile | 2 +-
.../media/platform/st/sti/c8sectpfe/Makefile | 4 +-
drivers/media/spi/Makefile | 2 +-
drivers/media/tuners/Makefile | 2 +-
drivers/media/usb/as102/Makefile | 2 +-
drivers/media/usb/au0828/Makefile | 4 +-
drivers/media/usb/b2c2/Makefile | 2 +-
drivers/media/usb/cx231xx/Makefile | 4 +-
drivers/media/usb/dvb-usb-v2/Makefile | 6 +-
drivers/media/usb/dvb-usb/Makefile | 6 +-
drivers/media/usb/em28xx/Makefile | 4 +-
drivers/media/usb/go7007/Makefile | 2 +-
drivers/media/usb/gspca/gl860/Makefile | 2 +-
drivers/media/usb/gspca/m5602/Makefile | 2 +-
drivers/media/usb/gspca/stv06xx/Makefile | 2 +-
drivers/media/usb/pvrusb2/Makefile | 4 +-
drivers/media/usb/siano/Makefile | 2 +-
drivers/media/usb/ttusb-budget/Makefile | 2 +-
drivers/media/v4l2-core/Makefile | 4 +-
.../net/ethernet/aquantia/atlantic/Makefile | 2 +-
.../chelsio/inline_crypto/ch_ipsec/Makefile | 4 +-
.../chelsio/inline_crypto/ch_ktls/Makefile | 2 +-
.../chelsio/inline_crypto/chtls/Makefile | 4 +-
drivers/net/ethernet/chelsio/libcxgb/Makefile | 2 +-
drivers/net/ethernet/freescale/dpaa/Makefile | 2 +-
drivers/net/ethernet/freescale/fman/Makefile | 2 +-
drivers/net/ethernet/fungible/funeth/Makefile | 2 +-
drivers/net/ethernet/hisilicon/hns3/Makefile | 8 +-
.../ethernet/marvell/octeontx2/nic/Makefile | 2 +-
.../net/ethernet/microchip/lan966x/Makefile | 2 +-
.../net/ethernet/microchip/sparx5/Makefile | 2 +-
drivers/net/wan/Makefile | 2 +-
.../broadcom/brcm80211/brcmfmac/Makefile | 4 +-
.../broadcom/brcm80211/brcmfmac/bca/Makefile | 6 +-
.../broadcom/brcm80211/brcmfmac/cyw/Makefile | 6 +-
.../broadcom/brcm80211/brcmfmac/wcc/Makefile | 6 +-
.../broadcom/brcm80211/brcmsmac/Makefile | 6 +-
.../broadcom/brcm80211/brcmutil/Makefile | 2 +-
.../net/wireless/intel/iwlwifi/dvm/Makefile | 2 +-
.../net/wireless/intel/iwlwifi/mei/Makefile | 2 +-
.../net/wireless/intel/iwlwifi/mvm/Makefile | 2 +-
.../wireless/realtek/rtl818x/rtl8180/Makefile | 2 +-
.../wireless/realtek/rtl818x/rtl8187/Makefile | 2 +-
drivers/pinctrl/renesas/Makefile | 24 +--
drivers/scsi/aic7xxx/Makefile | 12 +-
drivers/scsi/csiostor/Makefile | 2 +-
drivers/scsi/cxgbi/Makefile | 2 +-
drivers/scsi/libsas/Makefile | 2 +-
drivers/scsi/pcmcia/Makefile | 2 +-
drivers/staging/media/atomisp/Makefile | 2 +-
drivers/staging/media/av7110/Makefile | 8 +-
drivers/staging/rtl8723bs/Makefile | 2 +-
drivers/target/iscsi/cxgbit/Makefile | 6 +-
drivers/tty/serial/8250/Makefile | 2 +-
drivers/usb/gadget/function/Makefile | 4 +-
drivers/usb/gadget/legacy/Makefile | 6 +-
drivers/usb/storage/Makefile | 2 +-
drivers/vdpa/mlx5/Makefile | 2 +-
fs/hostfs/Makefile | 2 +-
fs/iomap/Makefile | 2 +-
fs/unicode/Makefile | 14 +-
fs/xfs/Makefile | 4 +-
init/Makefile | 2 +-
kernel/Makefile | 2 +-
kernel/bpf/Makefile | 2 +-
kernel/bpf/preload/Makefile | 2 +-
kernel/gcov/Makefile | 2 +-
lib/Makefile | 16 +-
lib/raid6/Makefile | 2 +-
net/wireless/Makefile | 2 +-
rust/Makefile | 14 +-
samples/bpf/Makefile | 24 +--
samples/coresight/Makefile | 2 +-
samples/hid/Makefile | 16 +-
scripts/Makefile | 6 +-
scripts/Makefile.asm-generic | 8 +-
scripts/Makefile.build | 22 +--
scripts/Makefile.clean | 2 +-
scripts/Makefile.defconf | 16 +-
scripts/Makefile.dtbinst | 2 +-
scripts/Makefile.headersinst | 10 +-
scripts/Makefile.lib | 22 +--
scripts/Makefile.modfinal | 4 +-
scripts/Makefile.modinst | 6 +-
scripts/Makefile.modpost | 4 +-
scripts/Makefile.package | 22 +--
scripts/Makefile.vdsoinst | 2 +-
scripts/Makefile.vmlinux | 6 +-
scripts/Makefile.vmlinux_o | 8 +-
scripts/basic/Makefile | 2 +-
scripts/dtc/Makefile | 6 +-
scripts/gcc-plugins/Makefile | 2 +-
scripts/gdb/linux/Makefile | 2 +-
scripts/genksyms/Makefile | 4 +-
scripts/kconfig/Makefile | 22 +--
scripts/selinux/genheaders/Makefile | 4 +-
scripts/selinux/mdp/Makefile | 4 +-
security/apparmor/Makefile | 8 +-
security/selinux/Makefile | 2 +-
security/tomoyo/Makefile | 2 +-
tools/bootconfig/Makefile | 6 +-
tools/bpf/Makefile | 16 +-
tools/bpf/bpftool/Makefile | 24 +--
tools/bpf/resolve_btfids/Makefile | 12 +-
tools/build/Makefile | 8 +-
tools/build/Makefile.build | 2 +-
tools/build/Makefile.feature | 2 +-
tools/build/Makefile.include | 6 +-
tools/build/tests/ex/Makefile | 4 +-
tools/counter/Makefile | 8 +-
tools/gpio/Makefile | 6 +-
tools/hv/Makefile | 6 +-
tools/iio/Makefile | 6 +-
tools/include/nolibc/Makefile | 4 +-
tools/lib/api/Makefile | 14 +-
tools/lib/bpf/Makefile | 22 +--
tools/lib/perf/Makefile | 26 +--
tools/lib/subcmd/Makefile | 10 +-
tools/lib/symbol/Makefile | 14 +-
tools/lib/thermal/Makefile | 26 +--
tools/objtool/Makefile | 18 +--
tools/pci/Makefile | 6 +-
tools/perf/Makefile.config | 22 +--
tools/perf/Makefile.perf | 136 ++++++++--------
tools/perf/arch/arm64/Makefile | 6 +-
tools/perf/arch/loongarch/Makefile | 6 +-
tools/perf/arch/mips/Makefile | 2 +-
tools/perf/arch/powerpc/Makefile | 2 +-
tools/perf/arch/s390/Makefile | 2 +-
tools/perf/arch/x86/Makefile | 2 +-
tools/power/acpi/Makefile.config | 10 +-
tools/power/acpi/Makefile.rules | 2 +-
tools/power/acpi/tools/acpidump/Makefile | 2 +-
tools/power/acpi/tools/pfrut/Makefile | 2 +-
tools/power/x86/intel-speed-select/Makefile | 10 +-
tools/spi/Makefile | 6 +-
tools/testing/selftests/nolibc/Makefile | 14 +-
tools/thermal/lib/Makefile | 24 +--
tools/thermal/thermal-engine/Makefile | 14 +-
tools/thermal/thermometer/Makefile | 10 +-
tools/usb/Makefile | 8 +-
usr/Makefile | 2 +-
usr/include/Makefile | 4 +-
307 files changed, 960 insertions(+), 960 deletions(-)
--
2.39.2
next reply other threads:[~2024-02-21 23:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-21 1:23 Elliott Mitchell [this message]
2024-02-20 17:13 ` [PATCH RFC 1/3] build: add trailing slash to $(srctree) Elliott Mitchell
2024-02-20 17:13 ` [PATCH RFC 2/3] build: modify uses of $(srctree) to assume trailing slash Elliott Mitchell
2024-02-20 17:13 ` [PATCH RFC 3/3] build: change $(srctree) to empty for current directory Elliott Mitchell
2024-02-22 4:38 ` [PATCH RFC 0/3] Adding trailing slash to $(srctree) Masahiro Yamada
2024-02-22 16:11 ` Elliott Mitchell
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