Dirk.Huenniger at bwg-online.de
Wed Mar 25 10:49:22 CET 2009
I am trying to compile an old pascal code with gpc. There was a problem with the autolinker, symbols collided between ncurses and grx (I think) ,so I removed it and build a command line manually in a makefile. I turned off the graphics and everything worked fine, it compiled linked and produced the desired output. Now I am trying to turn the graphics on again. The problem is that the linker complains that the following symbols could not be found.
So I edited the graph unit and replaced the references to these symbols by impleamantations that do nothing. No everything compiles again, a graphics window appears, but nothing is drawn into it.
Here is my compile and link command line:
c:\dev_gpc\bin\gpc c:\dev_gpc\examples\gbr\brichten.pas -oc:\dev_gpc\examples\gbr\richt.exe -lgrx20 c:\dev_gpc\units/graph.o -lgrx20 -lgdi32 c:\dev_gpc\units/dos.o c:\dev_gpc\units/grx.o c:\dev_gpc\units/gpc.o c:\dev_gpc\units/system.o c:\dev_gpc\units/mathe.o c:\dev_gpc\units/crt.o c:\dev_gpc\units/crtc.o -lpanel -lpdcurses c:\dev_gpc\units/math_nst.o c:\dev_gpc\units/br_var1.o c:\dev_gpc\units/br_var2.o c:\dev_gpc\units/br_proz.o c:\dev_gpc\units/br_plan.o c:\dev_gpc\units/geometri.o c:\dev_gpc\units/br_bili.o c:\dev_gpc\units/br_dio.o c:\dev_gpc\units/br_ko_g.o c:\dev_gpc\units/grafikpl.o -fno-inline -s -fno-io-checking -fno-range-checking -fimplicit-result -O1 -Wno-warnings -fno-assertions -fextended-syntax -fignore-function-results -fcstrings-as-strings -fpointer-arithmetic -march=i486 --no-autolink --no-automake -funit-path=c:\dev_gpc\units;c:\dev_gpc\examples\GBR\UNIT -funit-destination-path=c:\dev_gpc\units -Bc:\dev_gpc\lib\ -Bc:\dev_gpc\lib\gcc\mingw32\3.4.5\ -funit-path=C:\dev_gpc\examples\GBR\INC;C:\dev_gpc\examples\GBR\UNIT --no-autolink -LC:\dev_gpc\lib
Note that -lgrx20 is given and that -no-autolink is given.
I also analyed libgrx20.a with nm. It told me that a symbol. `_setlinestyle' does existis. But replacing `setlinestyle' with `_setlinestyle' in the graph library caused the linker to complain that the symbol `_setlinestyle' was not resolved.
So my basic question is how can I turn on the graphics.
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