kconfig-frontends fails to build with current gperf

[Philipp Krause]

The version of kconfig-frontends here does not build with current gperf (version 3.1 released 2017-01-05).

Upstream apparently tried to fix this, but even in the current 4.11.0.1 upstream release, the fix is incomplete. However, fixing the current 4.11.0.1 upstream release is just one line:

Change line 175 of hconf.c from

kconf_id_lookup (register const char *str, register unsigned int len)

to

kconf_id_lookup (register const char *str, register GPERF_LEN_TYPE len)

With this change, upstream should build fine both with gperf 3.1 and older versions.

Fixing the older version distributed here would need more effort.

Philipp

[Nathan T]

cool, thx. found the file i had to patch w/ this comment, but this seemed to do it for me:

changed hconf.c:163 to:

kconf_id_lookup (register const char *str, register unsigned int len)

[Harald Gutsche]

I noticed that hconf.c is a generated file, so changing this doesn't make much sense. Instead it is better to change hconf.perf which is used to generate hconf.c.

In my case I changed the type in line 12 to size_t:

static const struct kconf_id *kconf_id_lookup(register const char *str, register size_t len);

I guess this is dependent on the parser/lexer generators.

[Gregory Nutt]

I have updated kconfig-configs to 4.11.0.1 and the suggested change by Philipp Krause in in place.