Re: pltlc and pltlcu problems - Mailing list pgsql-hackers

[2002-01-20 23:24] Murray Prior Hobbs said:
| Brent Verner wrote:
| 
| >[2002-01-19 19:40] Murray Prior Hobbs said:
| >| 
| >| i have had no trouble loading and using the pgpgsql language - and it 
| >| lives in exactly the same place
| >| 
| >| i've done as you suggested though - here is the output
| >
| >Indeed.  I just got finished installing a chroot image of 
| >redhat-7.2 to test this.  I am seeing the same Tcl_CreateInterp
| >problem you mentioned earlier.  The pltcl language does not work 
| >even from the 7.2b3 rpms.  Can someone verify that pltcl works on
| >their stock redhat 7.2 system?
| >
| >Are there a known bugs in the stock 7.2 binutils or any other part
| >of the toolchain that might be causing this problem?  Most notably
| >is the absence of pltcl.so being linked to libtcl.so.  Could this
| >be a problem with redhat's tcl package?
| >
| >Monty, are you by chance running in a chroot?
| >
| if you mean me (Murray) nope - it's a bog standard RedHat 7.2 install

sorry!  I know a guy named "Monty Hobbs"... I'm really too tired ;-)

| but i have installed Tcl from the sources from scratch - 8.3.4

Indeed I've tracked the problem down to the line that links
the pltcl.so library:

make[3]: Entering directory `/usr/local/cvs/pgsql/src/pl/tcl'
/bin/sh mkMakefile.tcldefs.sh '/usr/lib/tclConfig.sh' 'Makefile.tcldefs'
make[3]: Leaving directory `/usr/local/cvs/pgsql/src/pl/tcl'
make[3]: Entering directory `/usr/local/cvs/pgsql/src/pl/tcl'
gcc -pipe -O -D__NO_STRING_INLINES -D__NO_MATH_INLINES -fPIC -I../../../src/include  -DHAVE_UNISTD_H=1
-DHAVE_LIMITS_H=1-DHAVE_GETCWD=1 -DHAVE_OPENDIR=1 -DHAVE_STRSTR=1 -DHAVE_STRTOL=1 -DHAVE_TMPNAM=1 -DHAVE_WAITPID=1
-DHAVE_UNISTD_H=1-DHAVE_SYS_PARAM_H=1 -DUSE_TERMIOS=1 -DHAVE_SYS_TIME_H=1 -DTIME_WITH_SYS_TIME=1 -DHAVE_TM_ZONE=1
-DHAVE_TM_GMTOFF=1-DHAVE_TIMEZONE_VAR=1 -DHAVE_ST_BLKSIZE=1 -DSTDC_HEADERS=1 -DNEED_MATHERR=1 -DHAVE_SIGNED_CHAR=1
-DHAVE_SYS_IOCTL_H=1  -c -o pltcl.o pltcl.c
 
gcc -pipe -shared -Wl,-soname,libtcl.so.0 -o pltcl.so pltcl.o -L/usr/lib -ltcl -ldl  -lieee -lm -lc
       ^^^^^^^^^^^
 

IIRC, this was changed to workaround another problem with the
tcl client library having name conflicts.  This value (TCL_SHLIB_LD)
comes directly from the /usr/lib/tclConfig.sh file supplied by the 
rpm.  You can add the following line to src/pl/tcl/Makefile
below "-include Makefile.tcldefs"
 TCL_SHLIB_LD = gcc -shared

to override the erronious value supplied by the system's tclConfig.sh.

| but just because i'm ignorant of many things - how would i check if i 
| was running in chroot environment?

not sure.  I always know when I am, because I setup the chroot.
Some web hosts will give you a chroot as well, but if you are
developing on your own workstation, there is little chance of
you being in a chroot and not knowing it.

hth. b

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