Steve Singer wrote:
> The recent PQisthreadsafe configure check change seems to be broken on 
> systems that don't have libpq installed in a standard place.


http://github.com/ssinger/slony1-engine/tree/bug40_steve 
http://github.com/ssinger/slony1-engine/commit/aeeaae2692930536961e3fe013a0ac7f14cd91a4)

contains a proposed fix.  I'm building the test program with 
rpath,-R,-blibpath as approriate to include the libpq directory.




> 
> configure:7664: result: yes
> configure:7679: checking for PQfreemem in -lpq
> configure:7714: /usr/bin/gcc-4.3.2 -o conftest -g -O2 
> -I/usr/local/pgsql9.0/include/ -I/usr/local/pgsql9.0/include/server/ 
> -L/usr/local/pgsql9.0/lib/ conftest.c -lpq   >&5
> configure:7720: $? = 0
> configure:7738: result: yes
> configure:7753: checking PostgreSQL for thread-safety
> configure:7786: /usr/bin/gcc-4.3.2 -o conftest -g -O2 
> -I/usr/local/pgsql9.0/include/ -I/usr/local/pgsql9.0/include/server/ 
> -L/usr/local/pgsql9.0/lib/ conftest.c  -lpq >&5
> configure:7789: $? = 0
> configure:7795: ./conftest
> ld.so.1: conftest: fatal: libpq.so.5: open failed: No such file or directory
> configure:7798: $? = 265
> configure: program exited with status 265
> 
> 
> The compile is finding libpq via the -L but when we go to execute the 
> compiled program it can't find libpq.
> 
> One option is to set LD_LIBRARY_PATH but doing this directly might not 
> be very portable (AIX uses LIBPATH for this purpose, but AIX also embeds 
> the full runtime path into the library)
> 
> 
> Another option is to compile the test with -rpath.  This would make 
> sense except the the syntax for that isn't portable either.
> 
> Solaris(sun linker), FreeBSD:  -R
> Linux, GNU linker most places: -rpath
> AIX: -blibpath
> HPUX: something else
> 
> (The above is based on looking grepping for rpath in src/makefiles/ in 
> the postgresql source tree).
> 
> Will we have to implement this type of logic in autoconf? or does 
> someone have a better idea?
> 
> 
> 
> 
> 


-- 
Steve Singer
Afilias Canada
Data Services Developer
416-673-1142