I have a function written in C that works well in PostgreSQL under Linux but I have to move it into PostgreSQL under Windows NT. I made dll with it by doing followed steps : 1) I added new function at the end of file int WINAPI mydll_init(HANDLE h, DWORD reason, void *foo) { return 1; } 2) I wrote def file LIBRARY MYCOMMIT DESCRIPTION 'MYCOMMIT' HEAPSIZE 10240 EXPORTS mycommit @2 3) I made dll using instructions : gcc -I/usr/src/postgresql-7.0.3/src/include/ -I/usr/src/postgresql-7.0.3/src /backend/ -shared -c mycommit.c -o mycommit.o gcc -s -Wl,--base-file,mycommit.base -L/usr/local/pgsql/lib/ -shared -o mycommit.dll mycommit.o -Wl,-e,_mydll_init@12 -lpostgres dlltool --base-file mycommit.base --def mycommit.def --output-exp mycommit.exp --dllname mycommit.dll gcc -s -Wl,--base-file,mycommit.base,mycommit.exp -L/usr/local/pgsql/lib/ -o mycommit.dll mycommit.o -Wl,-e,_mydll_init@12 -lpostgres dlltool --base-file mycommit.base --def mycommit.def --output-exp mycommit.exp --dllname mycommit.dll gcc -Wl,mycommit.exp -o mycommit.dll -L/usr/local/pgsql/lib/ mycommit.o -Wl,-e,_mydll_init@12 -lpostgres dlltool --def mycommit.def --dllname mycommit.dll --output-lib mycommit.a Next I created function in database with instruction : CREATE FUNCTION mycommit(text) RETURNS int AS '/home/administrator/dbfunction/mycommit.a' LANGUAGE 'c'; When I tried to invoke that function followed error eccured : ERROR: Load of file /home/administrator/dbfunction/mycommit.a failed: dlopen: Win32 error 193 What is wrong ? Artur [EMAIL PROTECTED] ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html