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| author | Javier Martinez Canillas <javier@osg.samsung.com> | 2015-11-20 14:35:02 -0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-12-09 23:40:41 +0100 |
| commit | 08dc7c7e407fed00a89bd6f4fc13c7ea20320de1 (patch) | |
| tree | 2a518f05f8a78fe406ce5cfd1527dcf0de63cfff /drivers/acpi/Makefile | |
| parent | 527e9316f8ec44bd53d90fb9f611fa7ffff52bb9 (diff) | |
| download | lwn-08dc7c7e407fed00a89bd6f4fc13c7ea20320de1.tar.gz lwn-08dc7c7e407fed00a89bd6f4fc13c7ea20320de1.zip | |
ACPI: Fix build errors due objects compiled unconditionally
If the CONFIG_ACPI Kconfig symbol is not enabled and a partial build is
attempted, compile errors will happen due missing types and identifiers.
This can be easily reproduced with the following commands:
$ export CROSS_COMPILE="arm-linux-gnueabihf-" ARCH=arm
$ make allmodconfig
$ make M=drivers/acpi/
CC drivers/acpi//tables.o
drivers/acpi//tables.c:235:3: warning: 'struct acpi_subtable_proc' declared inside parameter list
unsigned int max_entries)
^
drivers/acpi//tables.c:235:3: warning: its scope is only this definition or declaration, which is probably not what you want
drivers/acpi//tables.c: In function 'acpi_parse_entries_array':
drivers/acpi//tables.c:269:4: error: invalid use of undefined type 'struct acpi_subtable_proc'
...
scripts/Makefile.build:258: recipe for target 'drivers/acpi//tables.o' failed
make[1]: *** [drivers/acpi//tables.o] Error 1
Makefile:1401: recipe for target '_module_drivers/acpi/' failed
make: *** [_module_drivers/acpi/] Error 2
This is because objects are tried to be built unconditionally even when
CONFIG_ACPI is not enabled. This is usually not a problem since arches'
Kconfig sources drivers/acpi/Kconfig directly and also selects ACPI but
the Makefile should conditionally build the objects as well to prevent
these build errors.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/Makefile')
| -rw-r--r-- | drivers/acpi/Makefile | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 675eaf337178..73ec23ca7db1 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -8,13 +8,13 @@ ccflags-$(CONFIG_ACPI_DEBUG) += -DACPI_DEBUG_OUTPUT # # ACPI Boot-Time Table Parsing # -obj-y += tables.o +obj-$(CONFIG_ACPI) += tables.o obj-$(CONFIG_X86) += blacklist.o # # ACPI Core Subsystem (Interpreter) # -obj-y += acpi.o \ +obj-$(CONFIG_ACPI) += acpi.o \ acpica/ # All the builtin files are in the "acpi." module_param namespace. @@ -66,10 +66,10 @@ obj-$(CONFIG_ACPI_FAN) += fan.o obj-$(CONFIG_ACPI_VIDEO) += video.o obj-$(CONFIG_ACPI_PCI_SLOT) += pci_slot.o obj-$(CONFIG_ACPI_PROCESSOR) += processor.o -obj-y += container.o +obj-$(CONFIG_ACPI) += container.o obj-$(CONFIG_ACPI_THERMAL) += thermal.o obj-$(CONFIG_ACPI_NFIT) += nfit.o -obj-y += acpi_memhotplug.o +obj-$(CONFIG_ACPI) += acpi_memhotplug.o obj-$(CONFIG_ACPI_HOTPLUG_IOAPIC) += ioapic.o obj-$(CONFIG_ACPI_BATTERY) += battery.o obj-$(CONFIG_ACPI_SBS) += sbshc.o |