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dtc: add host build

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Having a host variant of dtc is needed for example for U-Boot, which
uses the Device Tree for a number of platforms.

In addition, now that we have a proper host-dtc package, it is no
longer needed for the linux package to install the host dtc compiler:
users interested in having the host dtc compiler can simply enable
this package.

A Config.in.host option is added to build host-dtc, because the
initial reason why the host DTC built by the kernel was installed in
$(HOST_DIR)/usr/bin (commit 707d44d0a2
from Thomas DS) was:

    Having dtc as a host tool can be useful for users that have a
    custom boot scenario where the device tree is not embedded in the
    kernel.

[Thomas:
  - rework the commit log.]
[Peter: keep the (renamed) linux version]
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Peter Seiderer 2015-10-03 20:44:12 +01:00 committed by Peter Korsgaard
parent ab74e09eb4
commit 5774f07d43
3 changed files with 20 additions and 0 deletions
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1
package/Config.in.host
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@ -5,6 +5,7 @@ menu "Host utilities"
source "package/dfu-util/Config.in.host"
source "package/dos2unix/Config.in.host"
source "package/dosfstools/Config.in.host"
source "package/dtc/Config.in.host"
source "package/e2fsprogs/Config.in.host"
source "package/e2tools/Config.in.host"
source "package/faketime/Config.in.host"

9
package/dtc/Config.in.host Normal file
View file

@ -0,0 +1,9 @@
config BR2_PACKAGE_HOST_DTC
bool "host dtc"
help
The Device Tree Compiler, dtc, takes as input a device-tree in
a given format and outputs a device-tree in another format.
Install host tools: dtc, convert-dtsv0, fdtdump, fdtget and fdtput.
https://git.kernel.org/cgit/utils/dtc/dtc.git

10
package/dtc/dtc.mk
View file

@ -44,4 +44,14 @@ define DTC_INSTALL_TARGET_CMDS
$(MAKE) -C $(@D) DESTDIR=$(TARGET_DIR) PREFIX=/usr $(DTC_INSTALL_GOAL)
endef
# host build
define HOST_DTC_BUILD_CMDS
$(HOST_CONFIGURE_OPTS) $(MAKE) -C $(@D) PREFIX=$(HOST_DIR)/usr
endef
define HOST_DTC_INSTALL_CMDS
$(MAKE) -C $(@D) PREFIX=$(HOST_DIR)/usr install-bin
endef
$(eval $(generic-package))
$(eval $(host-generic-package))