"git binary diffs are not supported" error using yocto - patch

I have one git repo where i maintain some binary files. Now i want to create patches of last few commits & integrate them in Yocto build.
I have created patches like
git format-patch -3 --binary
Now i have integrate these patches in Yocto recipe files. And Yocto gives below error while git apply in do_patch()
git binary diffs are not supported.
Patch xyz.patch does not apply (enforce with -f)
Am i missing anything while creating binary patches here?
or
Is there any Yocto Hacks which i can do in my recipe file to handle with binary patches?

Maybe you need to use this cmd with additional flag --full-index
git format-patch -3 --full-index --binary
https://git-scm.com/docs/git-format-patch
--binary
In addition to --full-index, output a binary diff that can be applied with git-apply.

Is there any Yocto Hacks which i can do in my recipe file to handle with binary patches?
When I deal with binary sources, I put the binary parts in a .tar.gz, add that to SRC_URI and then cp the bits I need to where I need them with a do_install_append.

I also ran into this with patches created using the yocto tooling (devtool update-recipe), and I do not want to change the way I create the patches.
By default yocto uses quilt to apply patches, I addressed the issue using git instead.
This can be configured by setting the PATCHTOOL variable in the recipe:
PATCHTOOL = "git"

Related

How do I compile bitcoin core to be more portable?

Background: I compile bitcoind on one system but run it on another. When I compiled bitcoind 0.19.1 some time back using the following method, I was able to run bitcoind and bitcoin-cli on the target system without issue. I think.
./autogen.sh
./configure --disable-wallet --disable-tests --disable-bench --disable-gui --enable-util-tx=no --prefix=$HOME/bitcoind/x64 --exec-prefix=$HOME/bitcoind/x64
make && make install
Today I compiled v0.20.0 using the same method. If I run ./bitcoind -version on the system I compiled the binary it runs fine, but if I take the binary to my target system I get the following error:
./bitcoind: error while loading shared libraries: libboost_filesystem.so.1.67.0: cannot open shared object file: No such file or directory
The binary seemed to be portable last time, and the pre-compiled binary I download from the Bitcoin Core team runs fine.
Note that on the target system libboost-filesystem-dev and libboost-filesystem1.67-dev are not installed, this is likely the source of my error. That said, running the pre-compiled binary from the Core team runs, so why doesn't mine?
Can someone help me understand if I did something wrong or if I need to add ./configure flags to make the binary more portable? Specifically what I likely did differently than the core developers that made my binary fail where theirs worked?
EDIT 1: Running ./configure --enable-static or ./configure LDFLAGS=-static does not result in a portable binary either.
Also note that installing libboost-filesystem library with apt does fix the error.
Thanks to Andrew Chow for his helpful answer to this on the bitcoind StackExchange. I needed to build the depends as per the depends documentation. Since I'm building for the same platform I'll be running on, I can run make in the depends directory with no arguments except -j2 which uses two cores. Change the number to however many cores you want to commit to the compile.
cd depends
make -j2
cd ..
./autogen.sh
./configure --prefix=$PWD/depends/x86_64-pc-linux-gnu
make -j2 && make install

How do I effectively utilize the "build" step in Julia?

Per the Julia Docs:
The build step is executed the first time a package is installed or when explicitly invoked with build. A package is built by executing the file deps/build.jl.
Why would I want to make a build.jl file and how do I effectively utilize the benefits it allows for?
Typically (historically) the build step and the build.jl file is used for downloading/installing binary dependencies with e.g. BinaryProvider (or its predecessor BinDeps)1. The build step can also be used to install configuration files. For example, IJulia uses build.jl in order to install a Julia kernel for Jupyter.
If your package is pure Julia code you typically don't have a build.jl file since there is no need for it.
1 With Julia 1.3 we have Artifacts which is meant to replace the BinaryProvider workflow and make build.jl obsolete for the purpose of downloading and installing prebuilt binaries.

How do i set up 'make install' to check the md5 of the installed libs/bins and only installed if changed?

I've inherited a fairly large project that is built using autoconfigure/automake (the configure.ac/Makefile.am files have their own issues, but that's a separate question).
My problem is that a top level build + build install generates several static and dynamic libs as well as binaries. So far so good. The problem is that 'make install' will indiscriminately copy over every single one of those libs/bins. (This takes a while)
I'd like it to only copy over libs/bins that have changed - potentially by comparing the md5sum of the target and source files.
How can i hook this up in my configure.ac/Makefile.am?
The actual program to copy the files is install (usually /usr/bin/install); this is defined in the INSTALL Make-variable.
Your install implementation might support the -C flag:
-C, --compare
compare each pair of source and destination files,
and in some cases, do not modify the destination at all
you might have to
So you could try to provide a script that does what you want (compare the source file with the destination file, and only copy if needed), by overriding this variable.
You could also just injec tthe -C flag, to see if it gives you any speedup (I tend to agree with ldav1s' comment that it might not):
make install INSTALL="/usr/bin/install -C"
note, that install accepts quite a number of arguments, and if you are going to re-implement a compatible script, you might have to implement some sub-set thereof.

Can I install a .deb during a BitBake Build?

Problem Definition
I'm attempting to adapt these rosjava installation instructions so that I can include rosjava on a target image built by the BitBake build system. I'm using the jethro branch of Poky.
Implementation Attempt: Build From .deb with package_deb.bbclass
According to the installation instructions, all that really needs to be done to install rosjava is the following:
sudo apt-get install ros-indigo-rosjava
Which works perfectly fine on my build machine. I figured that if I can just point to a .deb and use the Poky metadata class package_deb, it would do all the heavy lifting for me, so I produced the following simple recipe adapted on this posting on the Yocto Project mailing list:
inherit package_deb
SRC_URI = "http://packages.ros.org/ros/ubuntu/pool/main/r/ros-indigo-rosjava/ros-indigo-rosjava_0.2.1-0trusty-20160207-031808-0800_amd64.deb"
SRC_URI[md5sum] = "2020ccc8b4a67dd918a9a2c426eece0b"
SRC_URI[sha256sum] = "ab9493fabe1285b0d21aab031348d0d733d116b0b2470bae90025709b303b649"
The relevant part of the errors I get during the above recipe's do_unpack are:
| no entry data.tar.gz in archive
|
| gzip: stdin: unexpected end of file
| tar: This does not look like a tar archive
| tar: Exiting with failure status due to previous errors
| DEBUG: Python function base_do_unpack finished
| DEBUG: Python function do_unpack finished
The following command produces the output below:
$ ar t python-rosdistro_0.4.5-1_all.deb
debian-binary
control.tar.gz
data.tar.xz
You can see here that there's a data.tar.xz, not data.tar.gz. What can I do to remedy this error and install from this particular .deb?
I've included package_deb in my PACKAGE_CLASSES variable and package-management in my IMAGE_FEATURES. I've tried other methods of installation which have all failed; I thought this method in particular would be very useful to know how to implement.
Update - 3/22
I'm attempting to circumvent the problems with the method above by doing my installation through a ROOTFS_POSTPROCESS_COMMAND which I've adapted from forum posts like this
install_rosjava() {
${STAGING_BINDIR_NATIVE}/dpkg \
--root=${IMAGE_ROOTFS}/ \
--admindir=${IMAGE_ROOTFS}/var/lib/dpkg/ \
-L /var/cache/apt/archives/ros-indigo-rosjava_0.2.1-0trusty-20160207-031808-0800_amd64.deb
}
ROOTFS_POSTPROCESS_COMMAND += " install_rosjava() ; "
However, this fails due to dpkg not being a command found within the ${STAGING_BINDIR_NATIVE} path. The Yocto Project Reference Manual states that:
STAGING_BINDIR_NATIVE Specifies the path to the /usr/bin subdirectory of the sysroot directory for the build host.
Taking a look inside this directory yields a lot of commands but not dpkg (The recipe depends on the dpkg package, and this command can be found in my target rootfs after the build is finished; I've also tried pointing to ${IMAGE_ROOTFS}/usr/bin/dpkg which yields the same results). From what I understand of the BitBake process, this command may be in another sysroot, but I must admit that this is where my understanding breaks down.
Can I adjust this method so that it works, or will I need to start from scratch on an installation from source?
Perhaps there's a different method entirely which I could consider?
If you really want to install their deb directly then your rootfs postprocess is one solution. It doesn't work because depending on dpkg will build you a dpkg for the target but you want a dpkg that will run on the host. Add a dependency on dpkg-native to your image.
Though personally I'd either inherit bin_package and extract the deb they provide then re-package it as a standard package in OE, or ideally write a proper recipe to build rosjava and submit it to meta-ros (https://github.com/bmwcarit/meta-ros).
package_deb is where the packaging machinery for deb packages is stored, it's not something you'd inherit in a recipe but should be listed in PACKAGE_CLASSES.
When you put a .deb in a SRC_URI the fetcher will try to unpack it so you can access the contents: the assumption is that you're going to repack the contents as a native Yocto recipe.
If that's what you want to do then first you'll need to fix the unpack logic (in bitbake/lib/bb/fetch2/__init__.py) to handle .debs with xz-compressed data. This is a bug in bitbake and a bug report and/or patch would be appreciated.
The alternative would be to use their deb directly but I don't recommend that as it's likely the dependencies don't match. The best long-term solution would be to build it from source directly instead of attempting to use a package for another distro.

Compiling haskell module Network on win32/cygwin

I am trying to compile Network.HTTP (http://hackage.haskell.org/package/network) on win32/cygwin. However, it does fail with following message:
Setup.hs: Missing dependency on a foreign library:
* Missing (or bad) header file: HsNet.h
This problem can usually be solved by installing the system package that
provides this library (you may need the "-dev" version). If the library is
already installed but in a non-standard location then you can use the flags
--extra-include-dirs= and --extra-lib-dirs= to specify where it is.
If the header file does exist, it may contain errors that are caught by the C
compiler at the preprocessing stage. In this case you can re-run configure
with the verbosity flag -v3 to see the error messages.
Unfortuntely it does not give more clues. The HsNet.h includes sys/uio.h which, actually should not be included, and should be configurered correctly.
Don't use cygwin, instead follow Johan Tibells way
Installing MSYS
Install the latest Haskell Platform. Use the default settings.
Download version 1.0.11 of MSYS. You'll need the following files:
MSYS-1.0.11.exe
msysDTK-1.0.1.exe
msysCORE-1.0.11-bin.tar.gz
The files are all hosted on haskell.org as they're quite hard to find in the official MinGW/MSYS repo.
Run MSYS-1.0.11.exe followed by msysDTK-1.0.1.exe. The former asks you if you want to run a normalization step. You can skip that.
Unpack msysCORE-1.0.11-bin.tar.gz into C:\msys\1.0. Note that you can't do that using an MSYS shell, because you can't overwrite the files in use, so make a copy of C:\msys\1.0, unpack it there, and then rename the copy back to C:\msys\1.0.
Add C:\Program Files\Haskell Platform\VERSION\mingw\bin to your PATH. This is neccesary if you ever want to build packages that use a configure script, like network, as configure scripts need access to a C compiler.
These steps are what Tibell uses to compile the Network package for win and I have used this myself successfully several times on most of the haskell platform releases.
It is possible to build network on win32/cygwin. And the above steps, though useful (by Jonke) may not be necessary.
While doing the configuration step, specify
runghc Setup.hs configure --configure-option="--build=mingw32"
So that the library is configured for mingw32, else you will get link or "undefined references" if you try to link or use network library.
This combined with #Yogesh Sajanikar's answer made it work for me (on win64/cygwin):
Make sure the gcc on your path is NOT the Mingw/Cygwin one, but the
C:\ghc\ghc-6.12.1\mingw\bin\gcc.exe
(Run
export PATH="/cygdrive/.../ghc-7.8.2/mingw/bin:$PATH"
before running cabal install network in the Cygwin shell)

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