libpq compile error
Hello.
I try to compile the 1.1 example code which is shown at the page
http://postgresql.mirror.easynet.be/users-lounge/docs/7.1/programmer/libpq-e
xample.html.
I run OpenBSD 2.9 (i386) and I installed the 7.1 Postgresql client
interface.
I do this :
bash-2.04$
bash-2.04$
bash-2.04$
bash-2.04$ gcc -v -I/usr/local/include/postgresql/ -o testlibpq testlibpq.c
Reading specs from /usr/lib/gcc-lib/i386-unknown-openbsd2.9/2.95.3/specs
gcc version 2.95.3 20010125 (prerelease)
/usr/lib/gcc-lib/i386-unknown-openbsd2.9/2.95.3/cpp0 -lang-c -v
-I/usr/local/include/post
gresql/ -D__GNUC__=2 -D__GNUC_MINOR__=95 -D__unix__ -D__i386__ -D__OpenBSD__
-D__unix__ -D
__i386__ -D__OpenBSD__ -Asystem(unix) -Asystem(OpenBSD) -Acpu(i386)
-Amachine(i386) testli
bpq.c /tmp/cctlz476.i
GNU CPP version 2.95.3 20010125 (prerelease) (80386, BSD syntax)
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include/postgresql
/usr/include
End of search list.
The following default directories have been omitted from the search path:
/usr/include/g++
End of omitted list.
/usr/lib/gcc-lib/i386-unknown-openbsd2.9/2.95.3/cc1 /tmp/cctlz476.i -quiet
-dumpbase test
libpq.c -version -o /tmp/ccLqy476.s
GNU C version 2.95.3 20010125 (prerelease) (i386-unknown-openbsd2.9)
compiled by GNU C ver
sion 2.95.3 20010125 (prerelease).
as -o /tmp/ccSis476.o /tmp/ccLqy476.s
/usr/lib/gcc-lib/i386-unknown-openbsd2.9/2.95.3/collect2 -e start -dc -dp
-o testlibpq /u
sr/lib/crt0.o -L/usr/lib/gcc-lib/i386-unknown-openbsd2.9/2.95.3
/tmp/ccSis476.o -lgcc -lc
-lgcc
/tmp/ccSis476.o: Undefined symbol `_PQfinish' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQsetdbLogin' referenced from text
segment
/tmp/ccSis476.o: Undefined symbol `_PQstatus' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQerrorMessage' referenced from text
segment
/tmp/ccSis476.o: Undefined symbol `_PQexec' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQresultStatus' referenced from text
segment
/tmp/ccSis476.o: Undefined symbol `_PQclear' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQclear' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQexec' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQresultStatus' referenced from text
segment
/tmp/ccSis476.o: Undefined symbol `_PQclear' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQclear' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQexec' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQresultStatus' referenced from text
segment
/tmp/ccSis476.o: Undefined symbol `_PQclear' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQnfields' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQfname' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQntuples' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQgetvalue' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQclear' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQexec' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQclear' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQexec' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQclear' referenced from text segment
/tmp/ccSis476.o: Undefined symbol `_PQfinish' referenced from text segment
collect2: ld returned 1 exit status
bash-2.04$ gcc -v -I/usr/local/include/postgresql/ -o testlibpq testlibpq.c
Now tell yourself where do you tell the compiler where all the postgresql
code is! The compiler itself wont give you the code for all your postgresql
specific function calls.
try add "-lpq" to the end of the line.
gcc -o testlibpq testlibpq.c -lpq
Daniel Akerud
bash-2.04$ gcc -v -I/usr/local/include/postgresql/ -o
testlibpq testlibpq.c
Now tell yourself where do you tell the compiler where all the
postgresql
code is! The compiler itself wont give you the code for all
your postgresql
specific function calls.try add "-lpq" to the end of the line.
Unfortunately, It doesn't help:
<<
bash-2.04$ gcc -I/usr/local/include/postgresql/ -o testlibpq testlibpq.c
-lpq
ld: -lpq: no match
collect2: ld returned 1 exit status
bash-2.04$
"man gcc" gives that "-l" is for libraries.
I also tried:
<<
bash-2.04$ gcc -I/usr/local/include/postgresql/
-L/usr/local/include/postgresql/
-o testlibpq testlibpq.c -lpq
But I get the same original error (Undefined symbol).
Thanks for help.
Olivier
Show quoted text
gcc -o testlibpq testlibpq.c -lpq
Daniel Akerud
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Import Notes
Resolved by subject fallback
On Fri, 8 Jun 2001, Olivier Cherrier wrote:
bash-2.04$ gcc -v -I/usr/local/include/postgresql/ -o
testlibpq testlibpq.c
Now tell yourself where do you tell the compiler where all the
postgresql
code is! The compiler itself wont give you the code for all
your postgresql
specific function calls.try add "-lpq" to the end of the line.
Unfortunately, It doesn't help:
<<
bash-2.04$ gcc -I/usr/local/include/postgresql/ -o testlibpq testlibpq.c
-lpq
ld: -lpq: no match
collect2: ld returned 1 exit status
bash-2.04$
gcc -o testlibpq testlibpq.c -Iinclude_dir -Llib_dir -lpq
include_dir is the directory containing pgsql header files (*.h).
lib_dir is the directory containing pgsql libraries (eg. libpq.so)
You can locate the libdir by find / -name 'libpq.so*'
- Einar Karttunen
gcc -o testlibpq testlibpq.c -Iinclude_dir -Llib_dir -lpq
include_dir is the directory containing pgsql header files (*.h).
lib_dir is the directory containing pgsql libraries (eg. libpq.so)You can locate the libdir by find / -name 'libpq.so*'
OK. Now, it works fine!
Thanks a lot for your beautiful help.
Olivier
Show quoted text
- Einar Karttunen
Import Notes
Resolved by subject fallback