kc3-lang/gnulib/doc/posix-functions/popen.texi

• Show log

  Commit

• Hash : 25399c1a
  Author :
  Date : 2011-09-17T18:28:17
  

  popen: Support for MSVC.
  
  * lib/stdio.in.h (popen): Declare it if the system lacks this function.
  * lib/popen.c (popen): Provide alternate definition for native Windows.
  * m4/popen.m4 (gl_FUNC_POPEN): Test if popen exists. Set HAVE_POPEN.
  * m4/stdio_h.m4 (gl_STDIO_H_DEFAULTS): Initialize HAVE_POPEN.
  * modules/popen (Depends-on, configure.ac): Update condition.
  * modules/stdio (Makefile.am): Substitute HAVE_POPEN.
  * doc/posix-functions/popen.texi: Mention that the MSVC problem is
  fixed.
  

Download

• doc/posix-functions/popen.texi

• @node popen
  @section @code{popen}
  @findex popen
  
  POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/popen.html}
  
  Gnulib module: popen
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function is missing on some platforms:
  MSVC 9.
  @item
  Some platforms start the child with closed stdin or stdout if the
  standard descriptors were closed in the parent:
  Cygwin 1.5.x.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  Some platforms mistakenly set the close-on-exec bit, then if it is
  cleared by the application, the platform then leaks file descriptors
  from earlier @code{popen} calls into subsequent @code{popen} children:
  Cygwin 1.5.x.
  @end itemize
  

Download