package-avrdude.bash fails to compile: conflicting types for ‘keyboard_lookup_key’

[sarlacii]

Greetings

Am running openSUSE 15.2 with all build tools in place (only missing tool from your list in the README is "gperf", which I could install via "zypper install gperf"). But now the keyboard-keys-from-name.h file produced by gperf contains a definition with register type, which conflicts with the type in the udev-builtin-keyboard.c file.

Any attempt to fix the error is overwritten by the build script, of course. :)

Is this an issue with gperf as installed, or am I perhaps missing a devel package?

Debug from the build process:
In file included from udev-builtin-keyboard.c:32:0:
keyboard-keys-from-name.h:117:1: error: conflicting types for ‘keyboard_lookup_key’
keyboard_lookup_key (register const char *str, register size_t len)
^~~~~~~~~~~~~~~~~~~
udev-builtin-keyboard.c:31:26: note: previous declaration of ‘keyboard_lookup_key’ was here
static const struct key *keyboard_lookup_key(const char *str, unsigned len);
^~~~~~~~~~~~~~~~~~~
make[4]: *** [Makefile:810: libudev_core_la-udev-builtin-keyboard.lo] Error 1

[Virtual-Java]

Thanks for posting your issue, so I was not the only one having this issue.
First I tried to replace the line which caused the error, but as you said it was

overwritten by the build script, of course. :)

Replacing the following line in eudev-3.1.3/src/udev/keyboard-keys-from-name.h
after running the main build script was used as a temporary workaround by me.
//keyboard_lookup_key (register const char *str, register size_t len) // error different type>
keyboard_lookup_key (register const char *str, register unsigned int len)

When you run the package specific build scripts normally called by the main build afterwards
the v-3.1.3 directory shouldn't be overwritten by the script.
Then build libhidapi and avrdude manually by running the corresponding build scripts:
./libhidapi.build.bash respectively ./avrdude-6.3.build.bash

Alternatively until my pull request #27 is merged you can try to compile my corrected version.
https://github.com/Virtual-Java/avrdude-build-script