Since forever, we run 'menuconfig' automatically on an unconfigured
tree. However, this does not help users that much:
- If they read the documentation, they should already know to run
make menuconfig first.
- If they haven't read the documentation, dropping them in menuconfig
isn't very helpful.
- It's a likely that the user didn't intend to be in an unconfigured
tree (e.g. wrong O= specified), so starting menuconfig (and polluting
this wrong O= directory) is not very helpful.
- It's possible that the user really doesn't want menuconfig, but
instead needs xconfig, or some defconfig, or ...
So, instead of trying to guess what the user needs, print an error and
let the user decide what to do next.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
As reported by Alessandro Power on StackOverflow [1], the behaviour
of "make toolchain" in an unconfigured tree is misleading.
When .config doesn't exist, we don't read in the package .mk files, so
"make <package>" doesn't work:
$ make busybox
make: *** No rule to make target 'busybox'. Stop.
However, for "linux" and "toolchain", the corresponding file (or
actually directory) already exists. So instead, we get:
$ make linux
make: Nothing to be done for 'linux'.
This is confusing, because it looks as if the build succeeded.
The obvious solution is to make linux and toolchain PHONY targets when
.config doesn't exist. However, that actually does the reverse, because
then a rule _does_ exist for them and since they don't have
dependencies, make will consider them to be ready.
Therefore, we also have to provide an explicit rule for them, and
explicitly error out. Thise behaviour is still different from other
packages, but at least it is much less confusing.
[1] https://stackoverflow.com/questions/44521150
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Luca Ceresoli <luca@lucaceresoli.net>
Tested-by: Luca Ceresoli <luca@lucaceresoli.net>
Acked-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
When calling 'make printvars' without -s, it ends with
"Nothing to be done for 'printvars'." That's because the rule only
contains $(info ...) calls and no actual shell commands to execute.
To avoid this, make sure there is a shell command by adding :.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Quite a few targets in the top-level Makefile were missing the .PHONY
marking. Now that the .PHONY declarations are next to the definition
of the targets, they are much easier to find.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Currently, a lot of targets are declared PHONY together in the middle
of the Makefile. This has two important shortcomings:
- it is more difficult to see if a target is missing from PHONY;
- it is currently inside the ifeq ($(BR2_HAVE_DOT_CONFIG),y) condition,
but some of these targets are also defined when there is no .config;
in that case, these targets are not declared as PHONY.
Both issues can easily be solved by putting the PHONY declaration next
to the definition of the target.
The noconfig_targets are also all declared PHONY together; however,
for these we anyway have to keep the noconfig_targets variable
up-to-date, and that PHONY declaration is outside all conditions, so
there is no benefit of splitting them.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This simplifies the variable a little
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
toolchain is a package, so it is already defined as .PHONY in the
inner-generic-package macro.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
When debugging hidden dependencies, the build order is very important.
Most notably, it is interesting to identify potential culprits.
Add a new top-level rule, show-biuld-order, that dumps all the packages
in the order they would get built.
Note that there are a few differences with show-targets:
- more packages are reported, becasue show-targets does not report
host packages that have no prompt;
- the output is line-based, because we're using $(info $(1)); getting
a single output line like show-targets would require we use an
actual command, like printf '%s ' $(1); but that takes a lot of
time, while $(info $(1)) is almost instantaneous (the time to parse
the Makefiles);
- rootfs targets are not reported.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Peter Korsgaard <peter@korsgaard.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Currently, the output of printvars copntains the name of the variable,
its expanded value and its un-expanded value.
However, most of the time, we need the actual, expanded value, so it can
be re-used from a (non-Buildroot) infrastructure script, like a
post-build script, or a build-farm driver (e.g. a Jenkins job...)
Add two options that a user may set to change the output of printvars:
- QUOTED_VARS, if set, will quote the value
- RAW_VARS, if set, will print the unexpanded value
The new output by default only prints the expanded value now.
So that it can be used as such:
$ make -s printvars VARS=BUSYBOX_VERSION
BUSYBOX_VERSION=1.26.2
$ make -s printvars VARS=BUSYBOX_RDEPENDENCIES QUOTED_VARS=YES
BUSYBOX_RDEPENDENCIES='ncurses util-linux'
$ make -s printvars VARS=BUSYBOX_FINAL_PATCH_DEPENDENCIES RAW_VARS=YES
BUSYBOX_FINAL_PATCH_DEPENDENCIES=$(sort $(BUSYBOX_PATCH_DEPENDENCIES))
And it is even possible to directly evaluate it in a shell script:
eval $(make -s printvars VARS=BUSYBOX_VERSION QUOTED_VARS=YES)
Backward compatibility of the output is not maintained. It is believed
that scripts that depended on the previous output were very fragile to
begin with, because they had to filter the non-formatted output
(splitting on spaces or braces was not really possible, because values
could contain either).
Document printvars and its options in the manual; list it in the output
of 'make help'.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Allow architectures to define variables and helper macros.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Peter Korsgaard <jacmet@uclibc.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
The buildroot repository is now mirrored on
https://gitlab.com/buildroot.org/buildroot so we can use Gitlab-CI to
test Buildroot. Gitlab-CI is controlled by a .gitlab-ci.yml file
that exists in the repository.
For now, the only test is building all defconfigs (inspired on
https://travis-ci.org/buildroot/buildroot-defconfig-testing/). Since
all the defconfigs have to be specified in the .gitlab-ci.yml file,
we generate the file based on .gitlab-ci.yml.in. The generated
.gitlab-ci.yml file has to be committed into the repository, though,
otherwise Gitlab-CI doesn't see it. So there is also a test to verify
that .gitlab-ci.yml is up-to-date.
Building all the defconfigs takes a long time. Gitlab-CI will do that
every time it pulls from git.buildroot.org, which is once per hour.
That is way too often. Therefore, the defconfigs are not built on pull,
but only on explicit trigger through the API or when a tag is added.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[Thomas:
- fix typo not -> no
- add LC_ALL=C when calling 'ls -1' to get a predictable order of the
defconfigs
- regenerate .gitlab-ci.yml.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit teaches the generic package handling code how to extract .tar.lz
archives. When lzip is not installed on the host, host-lzip gets built
automatically.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
When GCC_COLORS is set, ccache passes '-fdiagnostics-color' to GCC but
this flag requires GCC v4.9 or later. Older versions complain about the
unrecognized command line option.
Using GCC_COLORS in the context of Buildroot is seldom useful, so we
just unexport GCC_COLORS altogether.
Reported-by: Carlos Santos <casantos@datacom.ind.br>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Enable fakedate for whole build process.
This work was sponsored by `BA Robotic Systems'.
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Reviewed-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Add support for OpenRISC. See here for more details about
OpenRISC http://openrisc.io.
All buildroot included upstream binutils versions are supported.
Gcc support is not upstream, to be able to enable musl C library
support later, we use the branch with musl support.
At the moment it is possible to build a musl based toolchain,
but bootup in Qemu fails.
Gdb is only working to debug bare-metal code, there is no support
for gdbserver/gdb on Linux, yet.
[Peter: drop ?= for GCC_SOURCE]
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Tested-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Since commit f71a621d91, we are using the
SED variable in the main Makefile. However, this variable is only
defined in package/Makefile.in, which gets included only when a
configuration is defined.
This means that, if you do:
$ make menuconfig savedefconfig
without a configuration defined, it fails with:
/bin/bash: /BR2_DEFCONFIG=/d: No such file or directory
Makefile:898: recipe for target 'savedefconfig' failed
make[1]: *** [savedefconfig] Error 127
This issue affects users of the "buildroot-submodule" project, which
does menuconfig+savedefconfig automatically. They worked around this
issue in commit
d12676b608,
but really "make menuconfig savedefconfig" should work out of the box.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Commit 173135df5b ("core: re-enter make if
$(CURDIR) or $(O) are not canonical paths") introduced the CANONICAL_O
variable, defined as:
CANONICAL_O := $(shell mkdir -p $(O) >/dev/null 2>&1)$(realpath $(O))
This duplicates the definition of BASE_DIR, by different means:
BASE_DIR := $(shell mkdir -p $(O) && cd $(O) >/dev/null && pwd)
So one of these shell calls is redundant. CANONICAL_O is defined first,
so this commit replaces the BASE_DIR derivation with $(CANONICAL_O).
Signed-off-by: Danomi Manchego <danomimanchego123@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
The distclean target no longer removes the "output" directory for
in-tree builds, because $(O) is no longer just "output" in that
case. Change the test to be against "$(CURDIR)/output", to match
the O setting, and a similar test elsewhere in the same Makefile.
Signed-off-by: Danomi Manchego <danomimanchego123@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Make may throw an error (but ignored) trace when cleaning up the
rootfs.
The target-finalize rule intends to remove the folder
`$(TARGET_DIR)/usr/share' but this directory may still contain items
(such as the `udhcpc' helper script) and causes the rmdir to fail.
The stderr output is redirected to /dev/null but it returns and error
which is escaped by the leading `-'; but make reports an ignored-error.
See the log below:
$ make
(...)
rm -rf (...)/target/usr/share/gtk-doc
rmdir (...)/target/usr/share
rmdir: failed to remove '(...)/target/usr/share': Directory not empty
make[1]: [Makefile:650: target-finalize] Error 1 (ignored)
find /(...)/target -type f \( -perm /111 -o -name '*.so*' \) -not \( -name 'libpthread*.so*' -o -name 'ld-*.so*' -o -name '*.ko' \) -print0 | xargs -0 (...)/host/usr/bin/arm-buildroot-linux-uclibcgnueabihf-strip --remove-section=.comment --remove-section=.note 2>/dev/null || true
This patch apply the same rule at the instruction immediately after:
* redirecting stderr to /dev/null (already done) and
* executing true if the `rmdir' instruction fails.
Signed-off-by: Gaël PORTAY <gael.portay@savoirfairelinux.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Use a space before and after the equal sign when defining the TZ, LANG
and LC_ALL variables, as suggested by the Buildroot coding style.
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Default invocation to gzip include timestamp in output file. This feature is
incompatible with BR2_REPRODUCIBLE. It is possible to disable it with '-n'.
The environment variable GZIP can hold a set of default options for gzip. So
instead to find all gzip invocation in build process, we just export 'GZIP=-n'.
Notice bzip2, lzma and xz are not impacted by this problem. On the other hand, lzop
does include timestamp and does not provide any way to disable it.
This work was sponsored by `BA Robotic Systems'.
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
When reproducibility is requested, generate a global SOURCE_DATE_EPOCH
environment variable which contains either the date of Buildroot last
commit if running from a git repository, or the latest release date.
This means that all packages embedding build dates will appear to
have the same build date, so in case of new commit or release, all
packages will appear to have been changed, even though some of them
may not have changed in fact.
The meaning of SOURCE_DATE_EPOCH is specified by the following
specification:
https://reproducible-builds.org/specs/source-date-epoch/
Signed-off-by: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
currently some buildroot targets fails (list-defconfigs,
graph-build, etc), if there is an issue with configuration.
For example, enabling uboot package without providing custom
version name results in failing of various targets.
Signed-off-by: Rahul Jain <Rahul.Jain@imgtec.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[Thomas: as suggested by Arnout, added printvars and savedefconfig to
nobuild_targets.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
If 'lib' is a symlink (as is the case when BR2_ROOTFS_MERGED_USR=y),
'find lib' does not return the correct result. So, until now,
libpthread*.so* and ld-*.so* were not stripped when 'lib' was a symlink.
We fix this by using 'find lib/' instead of 'find lib'. For consistency
reason, we also do the same change for the 'find' that removes .a and
.la files.
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
[Thomas: slightly improved the commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
We don't use the default implicit rules that are added by make, so
they just slow down the Makefile processing. The default implicit
rules can be removed by defining an empty .SUFFIXES: target.
This speeds up the start of the build on my machine from 5.6s to
4.9s.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
The top-level Makefile contains an "override O := $(O)" statement that
is purportedly required to make sure the O flag doesn't leak into the
environment of sub-makes. However, since commit 173135d, there is
already an "override O := ..." a few lines down. Therefore, the first
override is redundant.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
We reset MAKEOVERRIDES to avoid passing down variables that are
overridden on the command line to the package build systems. Indeed,
the variables overridden on the command line will be Buildroot
variables and not relevant to the package build system. In particular
the O option is used by some packages and the value passed in on the
command line is plain wrong for the individual package.
However, in commit 916e614b, MAKEOVERRIDES was moved earlier and it
was reset _before_ re-entering make in the cases when something has
to be fixed up (incorrect umask, non-absolute paths in O or CURDIR).
Therefore, if make is re-entered, any command line overrides are lost.
This particularly bites the autobuilders, because they use
O=<relative path> to specify the output directory, and they add
BR2_JLEVEL=... to avoid starting too many jobs in parallel. The
BR2_JLEVEL override is lost.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Samuel Martin <s.martin49@gmail.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Reviewed-by: Samuel Martin <s.martin49@gmail.com>
Tested-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Now that we can dump the reverse dependencies of a package, add the
ability to graph those.
It does not make sense to do a full reverse graph, as it would be
semantically equivalent to the direct graph. So we only provide a
per-package reverse graph.
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>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Finding the packages that select another one in a specific configuration
is not very trivial:
- when optional, the dependency is not expressed in Kconfig
- looking at the .mk files is not very nice.
Introduce a way to dump reverse dependencies of packages, i.e. the list
of packages that directly depend on that package. Like for direct
dependencies, we limit the list to the first-order reverse dependencies.
Document it in the main help; use the opportunity to also document
foo-show-depends.
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>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
When $(CURDIR) and/or $(O) contain symlinks in their paths, they can be
resolved differently, depending on each package build-system (whether it
uses the given paths or get the absolute canonical ones).
Using absolute canonical paths will help achieving reproducible builds and
will make easier tracking down host machine paths leaking into the host,
target or staging trees.
So, this change ensures the build takes place with the CURDIR and O
variables are set to their absolute canonical paths.
In order to recall the toplevel makefile with absolute canonical paths
for $(CURDIR) and $(O), we need to:
1- Compute the absolute canonical paths for $(CURDIR) and $(O) that will
be passed to the sub-make. This is achieved using the 'realpath' make
primitive. However, some care must be taken when manipulating O:
- the out-of-tree makefile wrapper happens a trailing "/.", we need
to strip this part away to not break the comparison driving the
sub-make call;
- the user can leave a trailing '/' to $(O);
- according to [1,2], realpath returns an empty string in case of
non-existing entry. So, to avoid passing an empty O= variable to
sub-make, it is necessary to define the output directory and create
it prior to call realpath on it (because on the first invocation,
$(O) usually does not yet exists), hence the trick doing the mkdir
right before calling realpath.
2- Update EXTRAMAKEARGS with the absolute canonical $(O) and use it
when call recalling the top-level makefile with umask and paths
correctly set.
3- Lastly, update the condition for setting the CONFIG_DIR and
NEED_WRAPPER variables.
Note:
* This change takes care of the makefile wrapper installed in $(O) to
avoid unneeded make recursion.
[1] https://www.gnu.org/software/make/manual/html_node/File-Name-Functions.html
[2] http://man7.org/linux/man-pages/man3/realpath.3.html
Reported-by: Matthew Weber <matt@thewebers.ws>
Cc: Matthew Weber <matt@thewebers.ws>
Cc: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tested-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This change only moves things around and comments what is done in the
top-level Makefile file, in order to prepare the next changes.
Note that moving the definition of $(O) before or after re-entering make
does not change anything on the buildroot behavior.
This change also renames the variable UMASK to REQ_UMASK.
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
