To: Stephen Turnbull <turnbull AT shako DOT sk DOT tsukuba DOT ac DOT jp>,
        djgpp AT sun DOT soe DOT clarkson DOT edu
From: Mike Piff <M DOT Piff AT sheffield DOT ac DOT uk>
Date: 16 Mar 94 09:28:43
Subject: Re: Graphics and C++
Reply-To: Mike Piff <M DOT Piff AT sheffield DOT ac DOT uk>

%%>Date:          Wed, 16 Mar 94 14:09:30 JST
%%>From:          Stephen Turnbull <turnbull AT shako DOT sk DOT tsukuba DOT ac DOT jp>

%%>>%%>> 1) In graphics.h, lines 79-84, Blit appears to be declared twice.
%%>>%%>
%%>>%%>Yes, it is.  With two different sets of arguments.  Welcome to C++ -
%%>>%%>you can do this!
%%>>
%%>>But when I compile, I get an error message.
%%>
%%>Are you sure you're using cc1plus?  Try GCC -v.  Make sure the source
%%>is named nantoka.CC or other C++ extension.  Note that header files
%%>often get included in other header files, so you may not be aware that
%%>you're including this header file into a C program.
%%>
%%>    --Steve
%%>

The following file does not compile for me. I include my environment and also
the output of gcc.

Mike Piff


TEST.CC

#ifdef __cplusplus
extern "C" {
#endif

#include <stdlib.h>
#include <stdio.h>
#include <graphics.h>

#ifdef __cplusplus
}
#endif

main()
{}


MY ENVIRONMENT:


CPLUS_INCLUDE_PATH=c:/gnuc/cplusinc;c:/gnuc/include
OBJCPLUS_INCLUDE_PATH=c:/gnuc/cplusinc
C_INCLUDE_PATH=c:/gnuc/include
OBJC_INCLUDE_PATH=c:/gnuc/include
COMPILER_PATH=c:/gnuc/bin
LIBRARY_PATH=c:/gnuc/lib
TMPDIR=c:/gnuc/tmp
GO32TMP=c:/gnuc/tmp
GO32= 2r1 driver c:\gnuc\drivers\paradise.grd gw 640 gh 480 tw 80 th 25 nc 16
 topline
387=YES


GCC OUTPUT:


Reading specs from c:/gnuc/lib/specs
gcc version 2.5.7
 c:/gnuc/bin/cpp.exe -lang-c++ -v -undef -D__GNUC__=2 -D__GNUG__=2 -
D__cplusplus -D__GNUC_MINOR__=5 -Dunix -Di386 -DGO32 -DMSDOS -D__unix__ -
D__i386__ -D__GO32__ -D__MSDOS__ -D__unix -D__i386 -D__GO32 -D__MSDOS -
D__OPTIMIZE__ test.cc c:/gnuc/tmp/cc000071
GNU CPP version 2.5.7 (80386, BSD syntax)
#include "..." search starts here:
#include <...> search starts here:
 c:/gnuc/cplusinc
 c:/gnuc/include
 /usr/local/lib/g++-include
 /usr/local/include
 /usr/local/go32/include
 /usr/local/lib/gcc-lib/go32/2.5.7/include
 /usr/include
End of search list.
 c:/gnuc/bin/cc1plus.exe c:/gnuc/tmp/cc000071 -fno-builtin -quiet -dumpbase
test.cc -O2 -version -o c:/gnuc/tmp/cca00071
GNU C++ version 2.5.7 (80386, BSD syntax) compiled by GNU C version 2.5.7.
In file included from test.cc:7:
c:/gnuc/include/graphics.h:84: conflicting types for `void Blit(class
GrRegion *, int, int, int, int, class GrRegion *, int, int, enum GrBlitFunc)'
c:/gnuc/include/graphics.h:81: previous declaration as `void Blit(class
GrRegion *, class GrRegion *, int, int, enum GrBlitFunc)'


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Dr M J Piff, School of Mathematics and Statistics, University of %%
%% Sheffield, UK.                    e-mail: M DOT Piff AT sheffield DOT ac DOT uk %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%