I did a little search and I found that probably there is a library (dll or lib ???) that contains all these references. I could specify it by using -L/C/path/to/libraries -libraryname as an option to the second gcc command, but I have no idea what the library is and where to find it (I used -L/C/PostgreSQL/9.0/lib -lpostgres -lpq, but it didn't work). All those references are declared as extern in postgres source code. Does anyone know what the library is?
On Fri, Oct 8, 2010 at 12:27 PM, Marios Vodas <mvo...@gmail.com> wrote: > I have a library that compiles fine under linux. > But when I try to compile it under mingw on windows 7 I get the following > errors. > > gcc.exe -c -O2 -I/C/PostgreSQL/9.0/include/server >> -I/C/PostgreSQL/9.0/include/server/utils >> -I/C/PostgreSQL/9.0/include/server/access >> -I/C/PostgreSQL/9.0/include/server/port/win32 -I/C/PostgreSQL/9.0/include >> -MMD -MP -MF build/Release/MinGW-Windows/mylib.o.d -o >> build/Release/MinGW-Windows/mylib.o mylib.c >> > > The previous command is successful and produces .o files (only some > warnings here like: warning: 'pg_finfo_mytype_in' redeclared without > dllimport attribute: previous dllimport ignored). > The following though gives errors. > > gcc.exe -shared -o dist/Release/MinGW-Windows/libMyLib.dll >> build/Release/MinGW-Windows/mylib.o >> > > Here is the log: > > build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x128): undefined >> reference to `errstart' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x13d): undefined >> reference to `_imp__CurrentMemoryContext' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x147): undefined >> reference to `MemoryContextAlloc' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x17b): undefined >> reference to `timestamp_in' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x180): undefined >> reference to `DirectFunctionCall3' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x1be): undefined >> reference to `timestamp_in' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x1c3): undefined >> reference to `DirectFunctionCall3' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x1f4): undefined >> reference to `errmsg' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x202): undefined >> reference to `errcode' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x20e): undefined >> reference to `errfinish' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x230): undefined >> reference to `_imp__CurrentMemoryContext' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x23a): undefined >> reference to `MemoryContextAlloc' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x251): undefined >> reference to `Int64GetDatum' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x25c): undefined >> reference to `timestamp_out' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x261): undefined >> reference to `DirectFunctionCall1' >> build/Release/MinGW-Windows/mylib.o:mylib.c:(.text+0x284): undefined >> reference to `Int64GetDatum' >> > >
