Hi,
I’m building a Qt application to controls a few GPIOs so, in my recipe, I add
libgpiod to the DEPENDS variable, but even then the –lgpiod is missing in the
linking stage and the build fails with several ‘undefined reference’ errors to
the gpiod functions:
|
/build/tmp/work/cortexa53-crypto-imx-ked-linux/testapp/0.1-r0/recipe-sysroot-native/usr/bin/aarch64-ked-linux/../../libexec/aarch64-ked-linux/gcc/aarch64-ked-linux/11.4.0/ld:
/usr/src/debug/ testapp /0.1-r0/build/../m4/inou.c:48: undefined reference to
`gpiod_chip_get_line'
| /build/tmp/work/cortexa53-crypto-imx-ked-linux/ testapp
/0.1-r0/recipe-sysroot-native/usr/bin/aarch64-ked-linux/../../libexec/aarch64-ked-linux/gcc/aarch64-ked-linux/11.4.0/ld:
/usr/src/debug/ testapp /0.1-r0/build/../m4/inou.c:55: undefined reference to
`gpiod_line_request_output'
| /build/tmp/work/cortexa53-crypto-imx-ked-linux/ testapp
/0.1-r0/recipe-sysroot-native/usr/bin/aarch64-ked-linux/../../libexec/aarch64-ked-linux/gcc/aarch64-ked-linux/11.4.0/ld:
/usr/src/debug/ testapp /0.1-r0/build/../m4/inou.c:61: undefined reference to
`gpiod_line_set_value'
| /build/tmp/work/cortexa53-crypto-imx-ked-linux/ testapp
/0.1-r0/recipe-sysroot-native/usr/bin/aarch64-ked-linux/../../libexec/aarch64-ked-linux/gcc/aarch64-ked-linux/11.4.0/ld:
/usr/src/debug/ testapp /0.1-r0/build/../m4/inou.c:67: undefined reference to
`gpiod_line_release'
| /build/tmp/work/cortexa53-crypto-imx-ked-linux/ testapp
/0.1-r0/recipe-sysroot-native/usr/bin/aarch64-ked-linux/../../libexec/aarch64-ked-linux/gcc/aarch64-ked-linux/11.4.0/ld:
/usr/src/debug/ testapp /0.1-r0/build/../m4/inou.c:69: undefined reference to
`gpiod_chip_close'
This is my recipe:
SUMMARY = "GPIO QT TEST APPLICATION"
DESCRIPTION = "GPIO user interface build with QT"
LICENSE = "GPLv2"
LIC_FILES_CHKSUM = "
file://${COREBASE}/meta/files/common-licenses/GPL-2.0-only;md5=801f80980d171dd6425610833a22dbe6
(
file://$%7bCOREBASE%7d/meta/files/common-licenses/GPL-2.0-only;md5=801f80980d171dd6425610833a22dbe6
) "
SRC_URI = "<source files added here>"
DEPENDS += "qtbase qtdeclarative qtmultimedia qtwebengine *libgpiod* "
RDEPENDS:${PN} += "qtxmlpatterns qtdeclarative-qmlplugins qtbase-plugins
ttf-dejavu-sans qtquickcontrols qtquickcontrols2 qtfreevirtualkeyboard "
S = "${WORKDIR}"
do_install:append () {
install -d ${D}${bindir}
install -m 0775 qt_testgpio ${D}${bindir}
}
FILES:${PN} += "${bindir}/qt_testgpio"
FILES:${PN} += "/opt/*"
inherit qmake5
What am I missing? Shouldn’t the inclusion of libpgiod library to the DEPENDS
variable result in the addition of –lgpiod to the link command? I tried to add
LDFLAGS:append = “ –lgpiod” but it didn’t solve the problem.
Any help will be appreciated.
Kind regards,
Javi
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