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authorYann E. MORIN <yann.morin.1998@free.fr>2013-01-13 11:52:20 (GMT)
committer Peter Korsgaard <jacmet@sunsite.dk>2013-01-13 22:09:05 (GMT)
commit2b0f455254149bd0c41c463a58c00d218922f002 (patch)
tree020d2b4e80f16b8eddaf84e172bc09d1f945ec04
parent766862434b728c3d647b5544844d305edd5f541a (diff)
downloadbuildroot-2b0f455254149bd0c41c463a58c00d218922f002.tar.gz
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Makefile: export a few variables to help support scripts
Support scripts (in support/) may need to parse the .config file, so give them an easy access to it, by exporting BUILDROOT_CONFIG with the fully- qualified path to .config. Also, post-build scripts may need to reference a few locations, so export those, too. Note: we export both O and BASE_DIR. Although they are the same, BASE_DIR is used internally, while O is used on the command line, which makes it a bit ambiguous to know which to use. As users use O= on the command line, they will probably tend to use that in their post-build scripts. Update doc accordingly. [Peter: fixed typo] Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Arnout Vandecappelle <arnout@mind.be> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> cc: Peter Korsgaard <jacmet@uclibc.org> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
-rw-r--r--Makefile11
-rw-r--r--docs/manual/customize-rootfs.txt7
2 files changed, 18 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 074674a..5a83251 100644
--- a/Makefile
+++ b/Makefile
@@ -91,6 +91,8 @@ EXTRAMAKEARGS = O=$(O)
NEED_WRAPPER=y
endif
+BUILDROOT_CONFIG=$(CONFIG_DIR)/.config
+
# Pull in the user's configuration file
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
-include $(CONFIG_DIR)/.config
@@ -282,6 +284,15 @@ HOSTCC := $(CCACHE) $(HOSTCC)
HOSTCXX := $(CCACHE) $(HOSTCXX)
endif
+# Scripts in support/ or post-build scripts may need to reference
+# these locations, so export them so it is easier to use
+export BUILDROOT_CONFIG
+export TARGET_DIR
+export STAGING_DIR
+export HOST_DIR
+export BINARIES_DIR
+export BASE_DIR O # O and BASE_DIR are the same
+
#############################################################
#
# You should probably leave this stuff alone unless you know
diff --git a/docs/manual/customize-rootfs.txt b/docs/manual/customize-rootfs.txt
index a1a556b..4d3b559 100644
--- a/docs/manual/customize-rootfs.txt
+++ b/docs/manual/customize-rootfs.txt
@@ -37,6 +37,13 @@ there are a few ways to customize the resulting target filesystem.
certain package generates wrong or unneeded files, you should fix
that package rather than work around it with a post-build cleanup
script. _Among these first 3 methods, this one should be preferred_.
+ You may also use these variables in your post-build script:
+ - +BUILDROOT_CONFIG+: the path to the Buildroot .config file
+ - +HOST_DIR+, +STAGING_DIR+, +TARGET_DIR+: see
+ xref:generic-package-reference[]
+ - +BINARIES_DIR+: the place where all binary files (aka images) are
+ stored
+ - +BASE_DIR+ (or +O+): the base output directory
* A special package, 'customize', stored in +package/customize+ can be
used. You can put all the files that you want to see in the final