Hi,
v5.3.1 of Developer Studio is a welcome tool for legato and WP76xx integration. However the path definition relationship between the sdef (where i am defining a custom kernel module) and the parsing of the sdef file to determine the locations of the mdef files is not very clear. Help regarding the required changes to the project properties in order for the mksys to correctly find my custom mdef file, from the defined custom kernel module in sdef, would be greatly appreciated. It appears that simply adding a custom kernel module line e.g. “$CURDIR/linux_kernel_modules/CyUSBSerial” to the sdef file does not update the the required dependency paths.
Regards,
jyijyi
March 14, 2019, 6:24am
2
which sdef file are you modifying?
mangOH.sdef
Created new MangOH project through File menu, for a green dev brd (which DevStudio retrieves from the git repo). With a little manipulation of the build variables and environment variable, I have it building great. Commenting out the heartbeatGreen line in the mangoh.sdef, rebuilding and updating the target - correctly removes the app from the WP. However adding a new folder under the linux_kernel_modules folder and creating an appropriate mdef file for the library, then adding the appropriate line to the mangOH.sdef yields the following, and I can’t quite pinpoint which paths to modify in DevStudio in order for the mdef to be found.
make -C Target_Legato_Debug all
make: *** [target] Error 1
21:40:46 Build Finished (took 2s.441ms)
jyijyi
March 15, 2019, 1:24am
4
how did you modify mangOH.sdef ?
mktool_args.txt (6.9 KB)mktool_environment.txt (4.7 KB)
make -C Target_Legato_Debug all#include <stdio.h>
jyijyi
March 15, 2019, 4:25am
6
I don’t see any linux_kernel_modules having this include in the .c file.
There are quite a few modules that use linux kernel header files.
These all compile fine.
I did modify my header file to <linux/…/include/stdio.h> which worked (as I assumed ‘linux’ was the path to the linux source code: which indeed it was), however other header files referenced by this file[stdio.h] cannot be found, so it must be a global path missing in the make command line it think.
jyijyi
March 18, 2019, 2:46am
8
in your mdef file, you need to add:
cflags:
}
I have decided to build a basic kmod (ktest_module.c in the link below) and try to compile it and the compiler still can’t find kernel support root directory. I have added B_KDIR (/home/mangoh/legato/packages/legato.toolchain.0.25.2.01.SWI9X07Y_02250201-wp76xx-native-x86_64-201903041238/resources/native/sysroots/armv7a-neon-poky-linux-gnueabi/usr/src/kernel) to the environ in DevStudio thinking this may be the cause (after reading the old way to build o-k-m @ Old out of tree module procedure ). But still no luck.
The error on compiling is…ktest_module.c:15:42: error: ‘VERSION’ undeclared (first use in this function)
Any thoughts?
jyijyi
March 21, 2019, 4:51am
10
where is the VERSION defined?
Apologies, have it working now.
