blob: f03c984ae6426c6078e544c322bcf55a4f388dd9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
# Experimental QEMU8 build system
This is a build of QEMU8 from scratch on Linux, using AOSP-specific compiler
toolchain and sysroot (based on an old glibc-2.17 to ensure the generated
binaries run on a vast number of distributions).
## Getting the sources and prebuilts:
The source tree is composed of ~50 multiple git containing source and prebuilt
tools. This take tens of minutes since it downloads large prebuilts like the
Clang toolchain or the GCC sysroot.
```sh
mkdir cuttlefish_vmm
cd cuttlefish_vmm
repo init --manifest-url https://android.googlesource.com/device/google/cuttlefish_vmm \
--manifest-name=qemu/manifest.xml
repo sync -j 12
```
The `qemu/manifest.xml` enumerates the dependencies. For each of them it
reproduces the hierarchy of git submodules. See below how to regenerate this
file from git metadata.
## Local build (Linux only):
Just call `qemu/scripts/rebuild.sh`, specifying a build directory
where all build outputs will be placed. In case of success,
the qemu static binaries will be under
`$BUILD_DIR/qemu-portable.tar.gz`.
```sh
qemu/scripts/rebuild.sh --build-dir /tmp/qemu-build
```
The `--run-tests` option can be used to run the QEMU test
suite just after the build. Note that this currently hangs.
## Container build (Linux only):
Ensure podman or docker is installed (podman is preferred
since it will allow you to run containers without being
root). See Annex A for important configuration information.
The build has been tested with a small Debian10 image e.g.:
```sh
mkdir /tmp/qemu-build
podman run --replace --pids-limit=-1 \
--interactive --tty \
--name qemu-build \
--volume .:/src:O \
--volume /tmp/qemu-build:/out \
docker.io/debian:10-slim
apt-get update
apt-get -qy install autoconf libtool texinfo libgbm-dev
/src/qemu/third_party/python/bin/python3 /src/qemu/scripts/rebuild.py --build-dir /out --run-tests
```
Note: `/src` is mounted with a file overlay so that cargo can write
`third_party/crossvm/rutabaga_gfx/ffi/Cargo.lock` file. We didn't find
a way to prevent cargo from writing it.
## Clone the repository with git submodules
The alternateway to get the source and dependencies is to rely on submodules.
```sh
git clone sso://experimental-qemu-build-internal.googlesource.com/qemu-build qemu
cd qemu
git submodule update --init --depth 1 --recursive --jobs 4
```
This makes possible to upvert a dependency such as `qemu` and
regenerate the repo manifest from the submodule tree.
```sh
python3 qemu/scripts/genrepo.py . --repo_manifest qemu/manifest.xml
```
## Check your code before submit
The following script run pytype and pyformat.
```sh
scripts/check.sh
```
## Regenerate Cargo crates list
Cargo crates are checked-in as part of the source tree and enumerated by
`qemu/third_party/.cargo/config.toml`. This file hase be regenerated when
`qemu/third_party/rust/crate` changes with the following command line:
```sh
ls qemu/third_party/rust/crates | awk '
BEGIN {print "[patch.crates-io]"}
{print $1 " = { path = \"rust/crates/" $1 "\" }"}' > qemu/third_party/.cargo/config.toml
```
|
