i have been trying to build the Qt Driver for 2 weeks now , without succeed.
I even moven on windows xp 32 Bit to avoid compatibility Problem with the 64 bit (which i faced when trying to link Psql libraries to my C Program).
Using a normal C compiler does function but when i want to have a GUI.
I tried
qmake -o Makefile “INCLUDEPATH+=D:/Programme/PostgresSQL/9.0/include” “LIBS+=D:/Programme/PostgresPlus/9.0/lib(or /lib/libpq.lib)” psql.pro
it generates Makefile debug and release
Now when i try : mingw32-make debug or release or even just mingw32-make
D:\Qt\2010.05\qt\src\plugins\sqldrivers\psql>mingw32-make
mingw32-make -f Makefile.Debug all
mingw32-make[1]: Entering directory `D:/Qt/2010.05/qt/src/plugins/sqldrivers/psq
l'
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-rel
oc -mthreads -Wl -shared -Wl,--out-implib,d:\Qt\2010.05\qt\plugins\sqldrivers\li
bqsqlpsqld4.a -o ..\..\..\..\plugins\sqldrivers\qsqlpsqld4.dll tmp/obj/debug_sha
red/main.o tmp/obj/debug_shared/qsql_psql.o tmp/obj/debug_shared/moc_qsql_psql.o
-L"d:\Qt\2010.05\qt\lib" -L"d:\Qt\2010.05\qt\lib" tmp\obj\debug_shared\qsqlpsq
ld_resource_res.o -lpq -lQtSqld4 -lQtCored4
d:/qt/2010.05/mingw/bin/../lib/gcc/mingw32/4.4.0/../../../../mingw32/bin/ld.exe:
cannot find -lpq
collect2: ld returned 1 exit status
mingw32-make[1]: *** [..\..\..\..\plugins\sqldrivers\qsqlpsqld4.dll] Error 1
mingw32-make[1]: Leaving directory `D:/Qt/2010.05/qt/src/plugins/sqldrivers/psql
'
mingw32-make: *** [debug-all] Error 2
I really have no idea what this missing -lpq might be.
Thanks for Helping.
Mehdi
You are using mingw32’s gcc to compile qt and trying to use postgreql library compiled with MSVC.
MSVC uses .LIB for libraries while Mingw32 (gcc + binutils) uses .a or .so files for libraries.
You can try either of the following methods:
a. compile Qt using MSVC.
b. use mingw32 to compile postgresql and use its libraries.