From: khan@xraylith.wisc.edu (Mumit Khan) Subject: Re: Mingw32 egcs 1.1.1, GCC_EXEC_PREFIX and CreateProcess 7 Jan 1999 18:26:39 -0800 Message-ID: References: <199901042036.VAA02870@wanadoo.fr> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII To: Gilles Depeyrot Cc: gnu-win32@cygnus.com On Mon, 4 Jan 1999, Gilles Depeyrot wrote: > I'm having a problem with Mingw32 egcs-1.1.1 concerning the > GCC_EXEC_PREFIX environment variable. > > I launch and run egcs from inside an Win32 application using > a call to CreateProcess. This works fine except for the fact > that in this case, GCC_EXEC_PREFIX *must* be defined or I get > an error message: > > gcc: installation problem, unable to exec `cpp' Gilles, I believe I've finally tracked the bug down (and fixed it)! Depending on the shell or method invocation, argv[0] may or may not have .exe and that's where the trouble is: - command : ``gcc'' -- > argv[0] == 'c:\egcs-1.1.1\gcc.exe' - cmd : ``gcc'' -- > argv[0] == 'c:\egcs-1.1.1\gcc.exe' - bash : ``gcc'' --> argv[0] == 'gcc' - CreateProcess : no implicit .exe appendage It always worked for command.com because it always expands the full path and puts it in argv[0]! Could you try a quick experiment: Try to execute gcc.exe as opposed to gcc via CreateProcess; if it works, then I have found the problem and I can work up an update. Regards, Mumit - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".