diff options
| author | Simon Josefsson <simon@josefsson.org> | 2009-12-10 14:14:13 +0100 |
|---|---|---|
| committer | Simon Josefsson <simon@josefsson.org> | 2009-12-10 14:14:13 +0100 |
| commit | 63983c0aac914c1a585cb6a7d0b16dc170b6ee3e (patch) | |
| tree | 60d37c9808bc805d0e8b887c53059ba05efea2e8 /m4 | |
| parent | 238a6434b5392dfb0cc4e9d7201cb91b341bafd4 (diff) | |
| download | gnulib-63983c0aac914c1a585cb6a7d0b16dc170b6ee3e.tar.gz | |
Add pty module for forkpty and openpty.
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/pty.m4 | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/m4/pty.m4 b/m4/pty.m4 new file mode 100644 index 0000000000..ba6a8c02a4 --- /dev/null +++ b/m4/pty.m4 @@ -0,0 +1,42 @@ +# pty.m4 serial 1 +dnl Copyright (C) 2009 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +# gl_PTY +# ------ +# Make sure that pty.h provides forkpty, or sets up a replacement header. +# Also define automake variable PTY_LIB to the library needed (if any). +AC_DEFUN([gl_PTY], +[ + PTY_H='' + PTY_LIB='' + # First make sure that pty.h provides forkpty, or setup the replacement. + AC_CHECK_HEADERS_ONCE([pty.h]) + if test $ac_cv_header_pty_h != yes; then + AC_CHECK_DECL([forkpty],,, [[#include <util.h>]]) + if test $ac_cv_have_decl_forkpty = no; then + AC_CHECK_DECL([forkpty],,, [[#include <libutil.h>]]) + if test $ac_cv_have_decl_forkpty = no; then + AC_MSG_WARN([[Cannot find forkpty, build will likely fail]]) + else + PTY_H='pty.h' + PTY_HEADER='libutil.h' + fi + else + PTY_H='pty.h' + PTY_HEADER='util.h' + fi + fi + # Second check for the library required for forkpty. + save_LIBS="$LIBS" + AC_SEARCH_LIBS([forkpty], [util], + [if test "$ac_cv_search_forkpty" != "none required"; then + PTY_LIB="$ac_cv_search_forkpty" + fi]) + LIBS="$save_LIBS" + AC_SUBST([PTY_H]) + AC_SUBST([PTY_LIB]) + AC_SUBST([PTY_HEADER]) +]) |