如何在yocto中编译基本的c文件
我正在使用yocto，我想在yocto中编译一些c文件并将它们安装到外部文件系统。 在此之前，我尝试创建一个单独的reciepe并从中编译c代码。 我无法编译它。
我不太清楚这个问题，因为它不够准确。
在配方树中包含C文件
如果你想在你的食谱中拥有C文件，那么拥有这样的文件树：
recipe-example/example/example_0.1.bb recipe-example/example/example-0.1/helloworld.c 您可以在使用创建新图层时生成此示例
yocto-layer
你的bb文件看起来像这样：
# # This file was derived from the 'Hello World!' example recipe in the # Yocto Project Development Manual. # SUMMARY = "Simple helloworld application" SECTION = "examples" LICENSE = "MIT" LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302" SRC_URI = "file://helloworld.c" S = "${WORKDIR}" do_compile() { ${CC} helloworld.c -o helloworld } do_install() { install -d ${D}${bindir} install -m 0755 helloworld ${D}${bindir} }
它将编译hello world文件并将其安装到映像上的/ usr / bin中。
来自Git回购
您也可以从git存储库编译，我建议您阅读yocto文件夹中的手册和示例。 以下是wiringPi的示例：
DESCRIPTION = "A library to control Raspberry Pi GPIO channels" HOMEPAGE = "https://projects.drogon.net/raspberry-pi/wiringpi/" SECTION = "devel/libs" LICENSE = "LGPLv3+" LIC_FILES_CHKSUM = "file://COPYING.LESSER;md5=e6a600fd5e1d9cbde2d983680233ad02" # tag 2.29 SRCREV = "d79506694d7ba1c3da865d095238289d6175057d" S = "${WORKDIR}/git" SRC_URI = "git://git.drogon.net/wiringPi \ file://0001-Add-initial-cross-compile-support.patch \ file://0001-include-asm-ioctl.h-directly-for-_IOC_SIZEBITS.patch \ " COMPATIBLE_MACHINE = "raspberrypi" CFLAGS_prepend = "-I${S}/wiringPi -I${S}/devLib" EXTRA_OEMAKE += "'INCLUDE_DIR=${D}${includedir}' 'LIB_DIR=${D}${libdir}'" EXTRA_OEMAKE += "'DESTDIR=${D}/usr' 'PREFIX=""'" do_compile() { oe_runmake -C devLib oe_runmake -C wiringPi oe_runmake -C gpio 'LDFLAGS=${LDFLAGS} -L${S}/wiringPi -L${S}/devLib' } do_install() { oe_runmake -C devLib install oe_runmake -C wiringPi install oe_runmake -C gpio install }
它是从git存储库获取，应用git生成的补丁，使用oe_runmake使用makefile进行编译。
随着devtool
在评论中已经询问过如何使用devtool添加配方。 我们仍将再次使用wiringPi作为示例。 下载它做https://github.com/WiringPi/WiringPi Makefile是文件夹wiringPi。 然后你可以做
devtool add
照顾来自devtool的警告
NOTE: Creating workspace layer in /home/dbensoussan/new_poky/poky/build/workspace NOTE: Enabling workspace layer in bblayers.conf NOTE: Using source tree as build directory since that would be the default for this recipe NOTE: Recipe /home/dbensoussan/new_poky/poky/build/workspace/recipes/project/project.bb has been automatically created; further editing may be required to make it fully functional
这产生如下配方：
# Recipe created by recipetool # This is the basis of a recipe and may need further editing in order to be fully functional. # (Feel free to remove these comments when editing.) # # WARNING: the following LICENSE and LIC_FILES_CHKSUM values are best guesses - it is # your responsibility to verify that the values are complete and correct. LICENSE = "Unknown" LIC_FILES_CHKSUM = "file://COPYING.LESSER;md5=e6a600fd5e1d9cbde2d983680233ad02" # No information for SRC_URI yet (only an external source tree was specified) SRC_URI = "" # NOTE: this is a Makefile-only piece of software, so we cannot generate much of the # recipe automatically - you will need to examine the Makefile yourself and ensure # that the appropriate arguments are passed in. do_configure () { # Specify any needed configure commands here : } do_compile () { # You will almost certainly need to add additional arguments here oe_runmake } do_install () { # This is a guess; additional arguments may be required oe_runmake install 'DESTDIR=${D}' }
然后，您可以编辑配方以适合您的配置