My recipe build fails and I don't know why. Here is the command I type:
bitbake example1
Then I got these error logs:
Loading cache: 100% |#################################################################| Time: 0:00:00
Loaded 245 entries from dependency cache.
Parsing recipes: 100% |################################################################################################| Time: 0:01:11
Parsing of 920 .bb files complete (123 cached, 797 parsed). 1875 targets, 70 skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies
Build Configuration:
BB_VERSION = "2.9.1"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "universal"
TARGET_SYS = "arm-poky-linux-gnueabi"
MACHINE = "beaglebone-yocto"
DISTRO = "poky"
DISTRO_VERSION = "5.1"
TUNE_FEATURES = "arm vfp cortexa8 neon callconvention-hard"
TARGET_FPU = "hard"
meta
meta-poky
meta-yocto-bsp
workspace
meta-mylayer = "master:e72d641a9988976ca9144ca3fd8f9a9988d3bdc5"
Checking sstate mirror object availability: 100% |#####################################################################| Time: 0:00:11
Sstate summary: Wanted 126 Local 0 Mirrors 116 Missed 10 Current 150 (92% match, 96% complete)
NOTE: Executing Tasks
WARNING: example1-1.0-r0 do_unpack: example1: the directory ${WORKDIR}/${BP} (/home/user/Projects/yocto/sources/tmp/work/cortexa8hf-neon-poky-linux-gnueabi/example1/1.0/example1-1.0) pointed to by the S variable doesn't exist - please set S within the recipe to point to where the source has been unpacked to
ERROR: example1-1.0-r0 do_compile: Execution of '/home/user/Projects/yocto/sources/tmp/work/cortexa8hf-neon-poky-linux-gnueabi/example1/1.0/temp/run.do_compile.2977111' failed with exit code 1
ERROR: Logfile of failure stored in: /home/user/Projects/yocto/sources/tmp/work/cortexa8hf-neon-poky-linux-gnueabi/example1/1.0/temp/log.do_compile.2977111
Log data follows:
| DEBUG: Executing shell function do_compile
| cc1: fatal error: /home/user/Projects/yocto/sources/tmp/work/cortexa8hf-neon-poky-linux-gnueabi/example1/1.0/example1.c: No such file or directory
| compilation terminated.
| WARNING: exit code 1 from a shell command.
ERROR: Task (/home/user/Projects/yocto/poky/meta-mylayer/recipes-example/example/example1.bb:do_compile) failed with exit code '1'
NOTE: Tasks Summary: Attempted 833 tasks of which 823 didn't need to be rerun and 1 failed.
Summary: 1 task failed:
/home/user/Projects/yocto/poky/meta-mylayer/recipes-example/example/example1.bb:do_compile
log: /home/user/Projects/yocto/sources/tmp/work/cortexa8hf-neon-poky-linux-gnueabi/example1/1.0/temp/log.do_compile.2977111
Summary: There was 1 WARNING message.
Summary: There was 1 ERROR message, returning a non-zero exit code.
Here is my recipe:
meta-mylayer/recipes-example/example/example1.bb
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
SRC_URI = "file://example1.c"
do_compile() {
${CC} ${FLAGS} ${LDFLAGS} ${WORKDIR}/example1.c -o example1
}
do_install() {
install -d ${D}/${bindir}
install -m 0755 ${S}/example1 ${D}/${bindir}
}
meta-mylayer/recipes-example/example/files/example1.c
#include <stdio.h>
int main() {
printf("Hello world");
return 0;
}
It seems the problem is just that bitbake can't find example1.c but I thought meta-mylayer/recipes-example/example/files was the right place to put it. So I don't really understand what's wrong.
I read several times the 3 Understanding and Creating Layers chapter in the Development Tasks Manual especially the 3.1 Creating Your Own Layer section, but I didn't find a solution.
By chance I managed to build the recipe by adding this task in example1.bb, but I guess it's not the correct way to fix the problem
do_unpack() {
cp /home/user/Projects/yocto/poky/meta-mylayer/recipes-example/example/files/example1.c /home/user/Projects/yocto/sources/tmp/work/cortexa8hf-neon-poky-linux-gnueabi/example1/1.0
}
EDIT : I retried to compile the recipe because I was on a specific commit. So I did checkout on the current styhead stable release (e72d641a9988976ca9144ca3fd8f9a9988d3bdc5) and now I have a warning :
WARNING: example1-1.0-r0 do_unpack: example1: the directory ${WORKDIR}/${BP} (/home/user/Projects/yocto/sources/tmp/work/cortexa8hf-neon-poky-linux-gnueabi/example1/1.0/example1-1.0) pointed to by the S variable doesn't exist - please set S within the recipe to point to where the source has been unpacked to
I ran into this : https://docs.yoctoproject.org/next/migration-guides/migration-5.1.html#general-notes
"Files from do_unpack now unpack to
WORKDIR/sources-unpack/rather thanWORKDIR/."
That's why bitbake doesn't find example1.c. The source files are now just moved to WORKDIR/sources-unpack since styhead release.
Apparently, the Yocto developers now recommend to write the following in recipes :
S = "${WORKDIR}/sources"
UNPACKDIR = "${S}"
This prevents the source files from being moved to WORKDIR/sources-unpack and instead places them directly in WORKDIR/sources. As a result, the WORKDIR/sources-unpack directory becomes unnecessary.
At the end, the final solution is :
meta-mylayer/recipes-example/example/example1.bb
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
SRC_URI = "file://example1.c"
S = "${WORKDIR}/sources"
UNPACKDIR = "${S}"
do_compile() {
${CC} ${FLAGS} ${LDFLAGS} ${WORKDIR}/sources/example1.c -o ${WORKDIR}/example1
}
do_install() {
install -d ${D}/${bindir}
install -m 0755 ${WORKDIR}/example1 ${D}/${bindir}
}