Re: libdb detection with gcc 5.1.1

[Aaron Richton <richton@nbcs.rutgers.edu>]

On Sat, 4 Jul 2015, Michael Str?der wrote:

> HI!
>
> This seems to be already fixed:
>
> ITS#8056: libdb detection with gcc 5
>
> But gcc-5.1.1 arrived on openSUSE Tumbleweed and now libdb detection fails:

Bottom line, set CPP='cpp -P' during configure. (Dunno why the m4 patch 
didn't take if you're on a patched copy; perhaps autoconf needs to be 
re-run...)


details:

gcc added cpp -P with behavior of traditional cpp -E, and changed cpp -E 
to emit detailed line number information (desirable when debugging complex 
macros etc.). This confuses autoconf.

https://bugzilla.redhat.com/show_bug.cgi?id=1191098

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64864


> checking db.h usability... yes
> checking db.h presence... yes
> checking for db.h... yes
> checking for Berkeley DB major version in db.h... none
> configure: error: Unknown Berkeley DB major version in db.h
>
> From config.log:
>
> configure:20300: checking db.h usability
> configure:20300: cc -c -g -O0 -DSLAP_SCHEMA_EXPOSE
> -DLDAP_COLLECTIVE_ATTRIBUTES -DSLAP_CONFIG_DELETE -I/usr/include
> -I/usr/include -I/usr/include -I/usr/include conftest.c >&5
> configure:20300: $? = 0
> configure:20300: result: yes
> configure:20300: checking db.h presence
> configure:20300: cc -E -I/usr/include -I/usr/include -I/usr/include
> -I/usr/include conftest.c
> configure:20300: $? = 0
> configure:20300: result: yes
> configure:20300: checking for db.h
> configure:20300: result: yes
> configure:20311: checking for Berkeley DB major version in db.h
> configure:20331: result: none
> configure:20334: error: Unknown Berkeley DB major version in db.h
>
> Any clue?
>
> Ciao, Michael.