Re: GPC, MSYS and Paths

17 Oct 2003

      Prof A Olowofoyeku (The African Chief) wrote:
...
...
pipec.c?
Ditto here. I am not sure whether "#define fix_argv(argvec) (argvec)" 
will be needed for MSYS as it is for Cygwin.
Well, actually it (i.e., the function in the `#else' part) is needed
*except* under Cygwin, so it's #defined as a no-op for Cygwin.

What the function does, according to the comment:

: /* This is a kludge to get around the Microsoft C spawn functions' propensity
:    to remove the outermost set of double quotes from all arguments. */

I.e., if you spawn a process with an argument of "foo" (including
the quotes), the process will only see foo without quotes.
...
Is there a way to test
whether it will be needed?
Compile this to `foo[.exe]':

program Foo;

var
  i: Integer;

begin
  for i := 1 to ParamCount do WriteLn (ParamStr (i))
end.

Then run this (might have to write 'foo.exe' in the `PExecute'
call):

program Bar;

uses GPC, Pipe;

var
  Arguments: array [0 .. 2] of CString = ('foo', 'bar', '"bar"');
  Status: Integer = 0;
  ErrMsg: TString = '';

begin
  PWait (PExecute ('foo', PCStrings (@Arguments), ErrMsg, PExecute_One), Status, 0);
  WriteLn (Status, ' ', ErrMsg)
end.

The output should be:

bar
"bar"
0

Frank

-- 
Frank Heckenbach, frank@g-n-u.de, http://fjf.gnu.de/, 7977168E
GPC To-Do list, latest features, fixed bugs:
http://www.gnu-pascal.de/todo.html
GPC download signing key: 51FF C1F0 1A77 C6C2 4482  4DDC 117A 9773 7F88 1707