> doing in the way you say (using the shell for MinGW - Simulates the unix
> environment):
>
> $ fltk-config --compile hello.cxx
>
> I get a series of errors, for simplicity carry one of them:
>
> g++.exe -IC:/MinGW/FLTK/include -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
> -D_LARGEFILE64_SOURCE -o 'hello' 'hello.cxx' C:/MinGW/FLTK/lib/libfltk.a
> C:/MinGW/FLTK/lib/libfltk.a(Fl.cxx.obj):Fl.cxx:(.text+0x2db): undefined
> reference to `OleUninitialize@0'
>
> What should I do?
Something is really, seriously, broken in your installation: fltk-config is not
returning *any* of the runtime libraries you need to make your code compile,
beyond fltk itself, so this will never work.
Here's what I get, on a Windows machine in an Msys shell:
$ fltk-config --compile hide.cxx
g++ -I/d/IanMacarthur/svn/fltk-1.3 -I/d/IanMacarthur/svn/fltk-1.3/png
-I/d/IanMacarthur/svn/fltk-1.3/zlib -I/d/IanMacarthur/svn/fltk-1.3/jpeg
-mwindows -DWIN32 -DUSE_OPENGL32 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -o
'hide' 'hide.cxx' -mwindows /d/IanMacarthur/svn/fltk-1.3/lib/libfltk.a -lole32
-luuid -lcomctl32
As you can see, there are a great many Windows libraries being passed here,
including ole32 (see the -lole32) which is needed for your code.
I can only think that your installation of fltk, or maybe of mingw/msys itself,
is incomplete in some way.
Try rebuilding the fltk libs from scratch in the Msys shell, and see what
happens - just cd into the fltk build tree, then do:
make clean
make
And see if that builds all the test folder items correctly, and see if
fltk-config then works as it ought to...
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