#22

heres the output of makepkg -si on the PKGBUILD file in serialosc-git I downloaded from arch linux wiki: http://ix.io/21s8

#23

okay, thatā€™s a known problem with GCC 9. You can either patch libuv here or just build serialosc with -Wno-address-of-packed-member added to CFLAGS temporarily. I am going to look into this over the weekend, see if we can update the bundled libuv.

3 Likes
#24

Okay, good to know its a known issue with GCC9.
What do you mean by ā€œpatch libuv hereā€? Do you mean patch it into the makepkg build? Do you know what file I might need to refer to do that?
running the command: makepkg -si -Wno-address-of-packed-member. using you CFLAGS suggestion returns. makepkg: invalid option ā€“ ā€˜Wā€™. What have I miss understood from you there?
That would be great if the bundled libuv is updated of course, that would be ideal :slight_smile:

#25

itā€™s not exactly an issue with GCC, rather GCC9 is being more strict with checking pointer value types in packed structs.

if you want to build it with GCC9, iā€™m suggesting that you donā€™t use the arch package manager and build serialosc manually, either after modifying the included libuv sources to not use the packed attribute for ev_poll struct, or configuring the build to have -Wno-address-of-packed-member in CFLAGS, i.e. by running CFLAGS=-Wno-address-of-packed-member ./waf configure

#26

Okay so this is what Ill do next. Can you confirm Im interpreting what your saying with enough accuracy ?

  1. Download serialosc-git. Shall I download it from arch git here: git clone https://aur.archlinux.org/serialosc-git.git. Or shall I download from here: https://github.com/monome/serialosc.git. Iā€™m pretty confident your suggesting the second link here?

  2. Either:

    • modify the included libuv sources to not use packed attribute for ev_pool struct. NOTE: At this point i donā€™t know what file that would be in?

    • Or configuring the build file. This is done by running the command CFLAGS=-Wno-address-ofpacked-member ./waf configure. << Is this written inside the build file?

#27
  1. Yes, 2nd link.
  2. Use the 2nd option, if youā€™re not comfortable with first. You will have to run the following command from source directory: CFLAGS=-Wno-address-ofpacked-member ./waf configure
#28

Okay.

Is that all thats required have installed serialosc? I was now going to refer to this page: https://monome.org/docs/serialosc/linux/ and follow the arch linux setup (ignoring using yay for serialosc). What do you reckon?

#29

After ./waf configure you gotta run ./waf and maybe ./waf install to install it system-wide or just run it locally with ./build/bin/serialoscd, basically following https://monome.org/docs/serialosc/raspbian/

Donā€™t forget to replace debian-specific package install instructions with arch-specific.

#30

uh oh. libuv error came back when I ran CFLAGS=-Wno-address-ofpacked-member ./waf

heres the output: http://ix.io/1WCk

Do we know why it wasnt avoided here?

#31

did you pass CFLAGS at configure stage? also whatā€™s the output of ./waf -v?

#32

I believe Iā€™ve passed CFLAGS at configure. I interpreting this as I ran CFLAGS=-Wno-address-ofpacked-member ./waf configure and then this was the output: http://ix.io/1WUm. Correct me if Iā€™ve miss understood what you mean by pass CFLAGS.

Heres the output of ./waf -v is: http://ix.io/1WUB

#33

Ah, sorry, my mistake above. Notice, that the flag is passed to the compiler:

image
image691Ɨ267 27.5 KB

But thereā€™s a typo, should be -Wno-address-of-packed-member, can you try it with a dash?

#34

please can you type the exact command, that you mean?

#35 
CFLAGS=-Wno-address-of-packed-member ./waf configure
./waf
#36

ah sorry see. cool. Configure went fine so did ./waf.
Heres the output for ./waf install: http://ix.io/1WX2

#37

Like I mentioned above, you should only do waf install if you want a system-wide install for some reason, but I wonā€™t recommend this if youā€™re not sure what youā€™re doing. Try running it locally as described above and see if it work fine first.

#38

okay the monomes plugged in this is the responce from ./build/bin/serialoscd: http://ix.io/1X1M

because Im running it locally is there a problem reaching libmonome?

#39

Itā€™s unrelated to running locally, but there clearly is some problem with your libmonome install, unfortunately I donā€™t know how yay installs packages, so canā€™t be of much help here. Was it installed without errors?

#40

no errors but so im not alone Iā€™ll download libmonome from: https://github.com/monome/libmonome and report what it says next. Its hard to document yayā€™s results

#41

iā€™ve downloaded https://github.com/monome/libmonome.
heres the result of ./waf configure: http://ix.io/1XE7
ā€¦and the result of ./waf: http://ix.io/1XHa

got the same error still from running serialoscd.

I guess its a case now of installing ftdi_sio and usbserialā€¦
also Im not yet clear what you meant yet by ā€œDonā€™t forget to replace debian-specific package install instructions with arch-specificā€