CBuild Test Cases

Initialize Environment

export LOGOUTPUT=: Outputs more detailed compilation information

lengjing@lengjing:~/data/cbuild$ source scripts/build.env
============================================================
ENV_BUILD_MODE   : external
ENV_BUILD_JOBS   : -j8
ENV_TOP_DIR      : /home/lengjing/data/cbuild
ENV_MAKE_DIR     : /home/lengjing/data/cbuild/scripts/core
ENV_TOOL_DIR     : /home/lengjing/data/cbuild/scripts/bin
ENV_DOWN_DIR     : /home/lengjing/data/cbuild/output/mirror-cache/downloads
ENV_CACHE_DIR    : /home/lengjing/data/cbuild/output/mirror-cache/build-cache
ENV_MIRROR_URL   : http://127.0.0.1:8888
ENV_TOP_OUT      : /home/lengjing/data/cbuild/output/noarch
ENV_CFG_ROOT     : /home/lengjing/data/cbuild/output/noarch/config
ENV_OUT_ROOT     : /home/lengjing/data/cbuild/output/noarch/objects
ENV_INS_ROOT     : /home/lengjing/data/cbuild/output/noarch/sysroot
ENV_DEP_ROOT     : /home/lengjing/data/cbuild/output/noarch/sysroot
ENV_TOP_HOST     : /home/lengjing/data/cbuild/output/x86_64-native
ENV_OUT_HOST     : /home/lengjing/data/cbuild/output/x86_64-native/objects
ENV_INS_HOST     : /home/lengjing/data/cbuild/output/x86_64-native/sysroot
ENV_DEP_HOST     : /home/lengjing/data/cbuild/output/x86_64-native/sysroot
============================================================
lengjing@lengjing:~/data/cbuild$ export LOGOUTPUT=

Test Application Compilation

Tests generating shared libraries, static libraries, and executables

lengjing@lengjing:~/data/cbuild$ cd examples/test-app
lengjing@lengjing:~/data/cbuild/examples/test-app$ make
gcc	sub.c
gcc	main.c
gcc	add.c
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app/libtest.a
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app/libtest.so.1.2.3
bin:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app/test
Build test-app Done.

Tests that if the header file is changed, the c files that depend on it are also re-compiled

lengjing@lengjing:~/data/cbuild/examples/test-app$ vi include/sub.h
lengjing@lengjing:~/data/cbuild/examples/test-app$ make
gcc	sub.c
gcc	main.c
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app/libtest.a
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app/libtest.so.1.2.3
bin:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app/test
Build test-app Done.
lengjing@lengjing:~/data/cbuild/examples/test-app$ make install

Tests dependency, (test-app2 depends on test-app)

lengjing@lengjing:~/data/cbuild/examples/test-app$ cd ../test-app2
lengjing@lengjing:~/data/cbuild/examples/test-app2$ make
gcc	main.c
bin:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app2/test2
Build test-app2 Done.
lengjing@lengjing:~/data/cbuild/examples/test-app2$ make install
lengjing@lengjing:~/data/cbuild/examples/test-app3$ readelf -d /home/lengjing/data/cbuild/output/noarch/objects/examples/test-app2/test2 | grep NEEDED
 0x0000000000000001 (NEEDED)             Shared library: [libtest.so.1]
 0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]

Tests generating multiple shared libraries in one Makefile

lengjing@lengjing:~/data/cbuild/examples/test-app2$
lengjing@lengjing:~/data/cbuild/examples/test-app2$ cd ../test-app3
lengjing@lengjing:~/data/cbuild/examples/test-app3$ make
gcc	add.c
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libadd.a
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libadd.so.1.2.3
gcc	sub.c
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libsub.a
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libsub.so.1.2
gcc	mul.c
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libmul.a
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libmul.so.1
gcc	div.c
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libdiv.a
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libdiv.so
lib:	/home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libadd2.so.1.2.3
Build test-app3 Done.
lengjing@lengjing:~/data/cbuild/examples/test-app3$ make install
lengjing@lengjing:~/data/cbuild/examples/test-app3$ readelf -d /home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libadd.so.1.2.3 | grep SONAME
 0x000000000000000e (SONAME)             Library soname: [libadd.so.1]
lengjing@lengjing:~/data/cbuild/examples/test-app3$ readelf -d /home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libsub.so.1.2 | grep SONAME
 0x000000000000000e (SONAME)             Library soname: [libsub.so.1]
lengjing@lengjing:~/data/cbuild/examples/test-app3$ readelf -d /home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libmul.so.1 | grep SONAME
 0x000000000000000e (SONAME)             Library soname: [libmul.so.1]
lengjing@lengjing:~/data/cbuild/examples/test-app3$ readelf -d /home/lengjing/data/cbuild/output/noarch/objects/examples/test-app3/libdiv.so | grep SONAME
 0x000000000000000e (SONAME)             Library soname: [libdiv.so]

Test Kconfig Configuration

Tests loading the default config to the current config

lengjing@lengjing:~/data/cbuild/examples/test-app3$ cd ../test-conf
lengjing@lengjing:~/data/cbuild/examples/test-conf$ ls config/
def_config
lengjing@lengjing:~/data/cbuild/examples/test-conf$ make def_config
bison	/home/lengjing/data/cbuild/output/x86_64-native/objects/scripts/kconfig/autogen/parser.tab.c
gcc	/home/lengjing/data/cbuild/output/x86_64-native/objects/scripts/kconfig/autogen/parser.tab.c
flex	/home/lengjing/data/cbuild/output/x86_64-native/objects/scripts/kconfig/autogen/lexer.lex.c
gcc	/home/lengjing/data/cbuild/output/x86_64-native/objects/scripts/kconfig/autogen/lexer.lex.c
gcc	parser/confdata.c
gcc	parser/menu.c
gcc	parser/util.c
gcc	parser/preprocess.c
gcc	parser/expr.c
gcc	parser/symbol.c
gcc	conf.c
gcc	/home/lengjing/data/cbuild/output/x86_64-native/objects/scripts/kconfig/conf
gcc	lxdialog/checklist.c
gcc	lxdialog/inputbox.c
gcc	lxdialog/util.c
gcc	lxdialog/textbox.c
gcc	lxdialog/yesno.c
gcc	lxdialog/menubox.c
gcc	mconf.c
gcc	/home/lengjing/data/cbuild/output/x86_64-native/objects/scripts/kconfig/mconf
#
# configuration written to /home/lengjing/data/cbuild/output/noarch/objects/examples/test-conf/.config
#
lengjing@lengjing:~/data/cbuild/examples/test-conf$ ls -a ${ENV_OUT_ROOT}/examples/test-conf
.  ..  .config  .config.old  autoconfig  config.h

Tests saving the current config to the specific config

lengjing@lengjing:~/data/cbuild/examples/test-conf$ make menuconfig
configuration written to /home/lengjing/data/cbuild/output/noarch/objects/examples/test-conf/.config

*** End of the configuration.
*** Execute 'make' to start the build or try 'make help'.

lengjing@lengjing:~/data/cbuild/examples/test-conf$ make def2_saveconfig
Save .config to config/def2_config
lengjing@lengjing:~/data/cbuild/examples/test-conf$ ls config/
def2_config  def_config

Test Driver Compilation

Tests compiling drivers and driver dependency (test_hello depends on test_hello_add and test_hello_sub)

lengjing@lengjing:~/data/cbuild/examples/test-conf$ cd ../test-mod
lengjing@lengjing:~/data/cbuild/examples/test-mod$ make deps
Generate Kconfig OK.
Generate auto.mk OK.
lengjing@lengjing:~/data/cbuild/examples/test-mod$ ls test-hello
Makefile  hello_div.c  hello_main.c  hello_main.h  hello_mul.c  mk.deps
lengjing@lengjing:~/data/cbuild/examples/test-mod$ ls test-hello-sub
Kbuild  Makefile  hello_sub.c  hello_sub.h  mk.deps
lengjing@lengjing:~/data/cbuild/examples/test-mod$ make deps
Generate Kconfig OK.
Generate auto.mk OK.
lengjing@lengjing:~/data/cbuild/examples/test-mod$ make menuconfig
configuration written to /home/lengjing/data/cbuild/output/noarch/objects/examples/test-mod/.config

*** End of the configuration.
*** Execute 'make' to start the build or try 'make help'.

lengjing@lengjing:~/data/cbuild/examples/test-mod$ make all
KERNELRELEASE= pwd=/home/lengjing/data/cbuild/examples/test-mod/test-hello-add PWD=/home/lengjing/data/cbuild/examples/test-mod
KERNELRELEASE=5.4.0-137-generic pwd=/usr/src/linux-headers-5.4.0-137-generic PWD=/home/lengjing/data/cbuild/examples/test-mod
KERNELRELEASE=5.4.0-137-generic pwd=/usr/src/linux-headers-5.4.0-137-generic PWD=/home/lengjing/data/cbuild/examples/test-mod
Build test-hello-add Done.
KERNELRELEASE= pwd=/home/lengjing/data/cbuild/examples/test-mod/test-hello-add PWD=/home/lengjing/data/cbuild/examples/test-mod
At main.c:160:
- SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:72
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:79
sign-file: certs/signing_key.pem: No such file or directory
Warning: modules_install: missing 'System.map' file. Skipping depmod.
Build test-hello-sub Done.
At main.c:160:
- SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:72
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:79
sign-file: certs/signing_key.pem: No such file or directory
Warning: modules_install: missing 'System.map' file. Skipping depmod.
KERNELRELEASE= pwd=/home/lengjing/data/cbuild/examples/test-mod/test-hello PWD=/home/lengjing/data/cbuild/examples/test-mod
KERNELRELEASE=5.4.0-137-generic pwd=/usr/src/linux-headers-5.4.0-137-generic PWD=/home/lengjing/data/cbuild/examples/test-mod/test-hello
KERNELRELEASE=5.4.0-137-generic pwd=/usr/src/linux-headers-5.4.0-137-generic PWD=/home/lengjing/data/cbuild/examples/test-mod/test-hello
Build test-hello Done.
KERNELRELEASE= pwd=/home/lengjing/data/cbuild/examples/test-mod/test-hello PWD=/home/lengjing/data/cbuild/examples/test-mod
At main.c:160:
- SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:72
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:79
sign-file: certs/signing_key.pem: No such file or directory
Warning: modules_install: missing 'System.map' file. Skipping depmod.

lengjing@lengjing:~/data/cbuild/examples/test-mod2$ ls ../../output/noarch/
objects/        objects-native/ sysroot/        sysroot-native/
lengjing@lengjing:~/data/cbuild/examples/test-mod2$ ls ../../output/noarch/sysroot/lib/modules/5.4.0-137-generic/extra/
hello_add.ko  hello_dep.ko  hello_sub.ko
lengjing@lengjing:~/data/cbuild/examples/test-mod2$ ls ../../output/noarch/sysroot/usr/include/test-hello-*
../../output/noarch/sysroot/usr/include/test-hello-add:
Module.symvers  hello_add.h

../../output/noarch/sysroot/usr/include/test-hello-sub:
Module.symvers  hello_sub.h

Tests generating multiple kernel modules (hello_op and hello_sec) in one Makefile

lengjing@lengjing:~/data/cbuild/examples/test-mod$ cd ../test-mod2
lengjing@lengjing:~/data/cbuild/examples/test-mod2$ make
KERNELRELEASE= pwd=/home/lengjing/data/cbuild/examples/test-mod2 PWD=/home/lengjing/data/cbuild/examples/test-mod2
KERNELRELEASE=5.4.0-137-generic pwd=/usr/src/linux-headers-5.4.0-137-generic PWD=/home/lengjing/data/cbuild/examples/test-mod2
KERNELRELEASE=5.4.0-137-generic pwd=/usr/src/linux-headers-5.4.0-137-generic PWD=/home/lengjing/data/cbuild/examples/test-mod2
Build test-mod2 Done.

lengjing@lengjing:~/data/cbuild/examples/test-mod2$ make install
KERNELRELEASE= pwd=/home/lengjing/data/cbuild/examples/test-mod2 PWD=/home/lengjing/data/cbuild/examples/test-mod2
At main.c:160:
- SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:72
At main.c:160:
- SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:72
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:79
sign-file: certs/signing_key.pem: No such file or directory
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:79
sign-file: certs/signing_key.pem: No such file or directory
Warning: modules_install: missing 'System.map' file. Skipping depmod.

lengjing@lengjing:~/data/cbuild/examples/test-mod2$ ls ../../output/noarch/sysroot/lib/modules/5.4.0-137-generic/extra/
hello_add.ko  hello_dep.ko  hello_op.ko  hello_sec.ko  hello_sub.ko
lengjing@lengjing:~/data/cbuild/examples/test-mod2$

Test Build Chain

Tests compilation order of multiple dependency packages

lengjing@lengjing:~/data/cbuild/examples/test-deps$ cd ../test-deps
lengjing@lengjing:~/data/cbuild/examples/test-deps$ make deps
Generate Kconfig OK.
Generate auto.mk OK.
Generate DEPS OK.
lengjing@lengjing:~/data/cbuild/examples/test-deps$ make menuconfig
configuration written to /home/lengjing/data/cbuild/output/noarch/objects/examples/test-deps/.config

*** End of the configuration.
*** Execute 'make' to start the build or try 'make help'.

lengjing@lengjing:~/data/cbuild/examples/test-deps$ make d
target=all path=/home/lengjing/data/cbuild/examples/test-deps/pe/pe
target=install path=/home/lengjing/data/cbuild/examples/test-deps/pe/pe
target=all path=/home/lengjing/data/cbuild/examples/test-deps/pd/pd
target=install path=/home/lengjing/data/cbuild/examples/test-deps/pd/pd

lengjing@lengjing:~/data/cbuild/examples/test-deps$ make
ext.mk
target=all path=/home/lengjing/data/cbuild/examples/test-deps/pc/pc
target=all path=/home/lengjing/data/cbuild/examples/test-deps/pe/pe
target=install path=/home/lengjing/data/cbuild/examples/test-deps/pe/pe
ext.mk
target=all path=/home/lengjing/data/cbuild/examples/test-deps/pd/pd
target=install path=/home/lengjing/data/cbuild/examples/test-deps/pd/pd
target=install path=/home/lengjing/data/cbuild/examples/test-deps/pc/pc
target=all path=/home/lengjing/data/cbuild/examples/test-deps/pb/pb
target=install path=/home/lengjing/data/cbuild/examples/test-deps/pb/pb
target=all path=/home/lengjing/data/cbuild/examples/test-deps/pa/pa
target=install path=/home/lengjing/data/cbuild/examples/test-deps/pa/pa
target=all path=/home/lengjing/data/cbuild/examples/test-deps/pf/pf
target=install path=/home/lengjing/data/cbuild/examples/test-deps/pf/pf
target=all path=/home/lengjing/data/cbuild/examples/test-deps/pf/pf
target=install path=/home/lengjing/data/cbuild/examples/test-deps/pf/pf

lengjing@lengjing:~/data/cbuild/examples/test-deps$ make a-deps
Note: a.dot a.svg and a.png are generated in the depends folder.

lengjing@lengjing:~/data/cbuild/examples/test-deps$ make clean
ext.mk
target=clean path=/home/lengjing/data/cbuild/examples/test-deps/pc/pc
target=clean path=/home/lengjing/data/cbuild/examples/test-deps/pe/pe
target=clean path=/home/lengjing/data/cbuild/examples/test-deps/pd/pd
target=clean path=/home/lengjing/data/cbuild/examples/test-deps/pb/pb
target=clean path=/home/lengjing/data/cbuild/examples/test-deps/pa/pa
target=clean path=/home/lengjing/data/cbuild/examples/test-deps/pf/pf
target=clean path=/home/lengjing/data/cbuild/examples/test-deps/pf/pf
rm -rf auto.mk Kconfig Target DEPS depends

Test Cache Compilation

Tests downloading, patching, compiling, cache processing

lengjing@lengjing:~/data/cbuild/examples/test-deps$ cd ../test-lua
lengjing@lengjing:~/data/cbuild/examples/test-lua$ make
curl http://127.0.0.1:8888/downloads/lua-5.4.4.tar.gz to /home/lengjing/data/cbuild/output/mirror-cache/downloads/lua-5.4.4.tar.gz
untar /home/lengjing/data/cbuild/output/mirror-cache/downloads/lua-5.4.4.tar.gz to /home/lengjing/data/cbuild/output/noarch/objects/examples/test-lua
patching file Makefile
patching file src/Makefile
Patch /home/lengjing/data/cbuild/examples/test-lua/patch/0001-lua-Support-dynamic-library-compilation.patch to /home/lengjing/data/cbuild/output/noarch/objects/examples/test-lua/lua-5.4.4 Done.
patching file src/lparser.c
Patch /home/lengjing/data/cbuild/examples/test-lua/patch/CVE-2022-28805.patch to /home/lengjing/data/cbuild/output/noarch/objects/examples/test-lua/lua-5.4.4 Done.
Guessing Linux
ar: `u' modifier ignored since `D' is the default (see `U')
Push lua Cache to /home/lengjing/data/cbuild/output/mirror-cache/build-cache.
Build lua Done.

lengjing@lengjing:~/data/cbuild/examples/test-lua$ make
Use lua Cache in /home/lengjing/data/cbuild/output/mirror-cache/build-cache.
Build lua Done.

Test Download

Creates another terminal and starts the mirror server

lengjing@lengjing:~/data/cbuild/examples/test-lua$ cd ../../output
lengjing@lengjing:~/data/cbuild/output$ mv mirror-cache mirror
lengjing@lengjing:~/data/cbuild/output$ cd mirror
lengjing@lengjing:~/data/cbuild/output/mirror$ python3 -m http.server 8888
Serving HTTP on 0.0.0.0 port 8888 (http://0.0.0.0:8888/) ...

Exports some variables in the original terminal

lengjing@lengjing:~/data/cbuild/examples/test-lua$ export FETCH_SCRIPT=${ENV_TOOL_DIR}/fetch_package.sh
lengjing@lengjing:~/data/cbuild/examples/test-lua$ export COPY_TO_PATH=${ENV_OUT_ROOT}/test

Tests downloading tar package

lengjing@lengjing:~/data/cbuild/examples/test-lua$ ${FETCH_SCRIPT} tar http://www.lua.org/ftp/lua-5.4.3.tar.gz lua-5.4.3.tar.gz ${COPY_TO_PATH} lua-5.4.3
curl http://www.lua.org/ftp/lua-5.4.3.tar.gz to /home/lengjing/data/cbuild/output/mirror-cache/downloads/lua-5.4.3.tar.gz
untar /home/lengjing/data/cbuild/output/mirror-cache/downloads/lua-5.4.3.tar.gz to /home/lengjing/data/cbuild/output/noarch/objects/test

Tests downloading tar package from the mirror server http://127.0.0.1:8888

lengjing@lengjing:~/data/cbuild/examples/test-lua$ ${FETCH_SCRIPT} tar http://www.lua.org/ftp/lua-5.4.4.tar.gz lua-5.4.4.tar.gz ${COPY_TO_PATH} lua-5.4.4
curl http://127.0.0.1:8888/downloads/lua-5.4.4.tar.gz to /home/lengjing/data/cbuild/output/mirror-cache/downloads/lua-5.4.4.tar.gz
untar /home/lengjing/data/cbuild/output/mirror-cache/downloads/lua-5.4.4.tar.gz to /home/lengjing/data/cbuild/output/noarch/objects/test

Tests downloading zip package

${FETCH_SCRIPT} zip https://github.com/curl/curl/releases/download/curl-7_86_0/curl-7.86.0.zip curl-7.86.0.zip ${COPY_TO_PATH} curl-7.86.0
curl https://github.com/curl/curl/releases/download/curl-7_86_0/curl-7.86.0.zip to /home/lengjing/data/cbuild/output/mirror-cache/downloads/curl-7.86.0.zip
unzip /home/lengjing/data/cbuild/output/mirror-cache/downloads/curl-7.86.0.zip to /home/lengjing/data/cbuild/output/noarch/objects/test

Tests downloading git package

lengjing@lengjing:~/data/cbuild/examples/test-lua$ ${FETCH_SCRIPT} git https://github.com/lengjingzju/json.git ljson ${COPY_TO_PATH} ljson
git clone https://github.com/lengjingzju/json.git to /home/lengjing/data/cbuild/output/mirror-cache/downloads/ljson
Cloning into '/home/lengjing/data/cbuild/output/mirror-cache/downloads/ljson'...
remote: Enumerating objects: 39, done.
remote: Counting objects: 100% (2/2), done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 39 (delta 1), reused 0 (delta 0), pack-reused 37
Unpacking objects: 100% (39/39), done.
copy /home/lengjing/data/cbuild/output/mirror-cache/downloads/ljson to /home/lengjing/data/cbuild/output/noarch/objects/test

Tests downloading svn package

lengjing@lengjing:~/data/cbuild/examples/test-lua$ ${FETCH_SCRIPT} svn https://github.com/lengjingzju/mem mem ${COPY_TO_PATH} mem
svn checkout https://github.com/lengjingzju/mem to /home/lengjing/data/cbuild/output/mirror-cache/downloads/mem
copy /home/lengjing/data/cbuild/output/mirror-cache/downloads/mem to /home/lengjing/data/cbuild/output/noarch/objects/test

Yocto Quick Start

Install compilation environment

lengjing@lengjing:~/data/cbuild/scripts$ sudo apt install gawk wget git diffstat unzip \
    texinfo gcc build-essential chrpath socat cpio \
    python3 python3-pip python3-pexpect xz-utils \
    debianutils iputils-ping python3-git python3-jinja2 \
    libegl1-mesa libsdl1.2-dev pylint3 xterm \
    python3-subunit mesa-common-dev zstd liblz4-tool qemu

Pulls Poky, version can be get from Yocto Releases Wiki

lengjing@lengjing:~/data/cbuild/scripts$ git clone git://git.yoctoproject.org/poky
lengjing@lengjing:~/data/cbuild/scripts$ cd poky
lengjing@lengjing:~/data/cbuild/scripts/poky$ git branch -a
lengjing@lengjing:~/data/cbuild/scripts/poky$ git checkout -t origin/kirkstone -b my-kirkstone
lengjing@lengjing:~/data/cbuild/scripts/poky$ cd ../../

Builds the image

lengjing@lengjing:~/data/cbuild$ source scripts/poky/oe-init-build-env
lengjing@lengjing:~/data/cbuild/build$ bitbake core-image-minimal
lengjing@lengjing:~/data/cbuild/build$ ls -al tmp/deploy/images/qemux86-64/
lengjing@lengjing:~/data/cbuild/build$ runqemu qemux86-64

Test Yocto Build

Adds the following variable definitions to the configuration conf/local.conf
```
ENV_TOP_DIR = "/home/lengjing/data/cbuild"
ENV_BUILD_MODE = "yocto"
```

Adds meta to test

lengjing@lengjing:~/data/cbuild/build$ bitbake-layers add-layer ../examples/meta-cbuild

Test compilation with bitbak

lengjing@lengjing:~/data/cbuild/build$ bitbake test-app2  # Compile Application
lengjing@lengjing:~/data/cbuild/build$ bitbake test-app3  # Compile Application
lengjing@lengjing:~/data/cbuild/build$ bitbake test-hello # Compile Driver
lengjing@lengjing:~/data/cbuild/build$ bitbake test-mod2  # Compile Driver
lengjing@lengjing:~/data/cbuild/build$ bitbake test-conf  # Compile native tool `kconfig`
lengjing@lengjing:~/data/cbuild/build$ bitbake test-conf -c menuconfig # Modify configuration

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examples.md

examples.md

CBuild Test Cases

Initialize Environment

Test Application Compilation

Test Kconfig Configuration

Test Driver Compilation

Test Build Chain

Test Cache Compilation

Test Download

Yocto Quick Start

Test Yocto Build

Files

examples.md

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examples.md

File metadata and controls

CBuild Test Cases

Initialize Environment

Test Application Compilation

Test Kconfig Configuration

Test Driver Compilation

Test Build Chain

Test Cache Compilation

Test Download

Yocto Quick Start

Test Yocto Build