[Bug 19856] cygwin's gcc package does not install /bin/cc because cygwin's bash can't run some programs under wine

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=19856





--- Comment #3 from Dan Kegel <dank at kegel.com>  2009-08-27 20:11:47 ---
Reproducible with a very small C program:

#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv, char **env)
{
   char *newargv[] = { "/usr/sbin/update-alternatives", NULL };
   char *newenviron[] = { NULL };
   execve("/usr/sbin/update-alternatives", newargv, env);
   perror("Returned? ");
}

cygwin's strace on that test app provides a useful clue.
On cygwin/Windows, that prints the usage message for update-alternatives.
On cygwin/wine, it screws up, thinks update-alternatives is a shell script,
and tries to run it via sh (without -c).
The problem seems to be that on cygwin/windows, the path is canonicalized
with a .exe on the end; that doesn't happen on wine for some reason.

I suspect path_conv::check() and path_conv::add_ext_from_sym() in 
http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/cygwin/path.cc?cvsroot=src
are involved but it's hard to read.

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