More useful macros added.

diff --git a/aclocal.glob b/aclocal.glob
index 5ae7364..760229c 100644 (file)
--- a/aclocal.glob
+++ b/aclocal.glob
@@ -1,6 +1,6 @@
 dnl -*-fundamental-*-                                    *@--GLOB-HEADER--@*
 dnl
-dnl $Id: aclocal.glob,v 1.2 1999/05/13 22:57:23 mdw Exp $
+dnl $Id: aclocal.glob,v 1.3 1999/07/17 10:27:44 mdw Exp $
 dnl
 dnl Common library of autoconf macros
 dnl
@@ -28,6 +28,9 @@ dnl Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 dnl----- Revision history ---------------------------------------------------
 dnl
 dnl $Log: aclocal.glob,v $
+dnl Revision 1.3  1999/07/17 10:27:44  mdw
+dnl More useful macros added.
+dnl
 dnl Revision 1.2  1999/05/13 22:57:23  mdw
 dnl Change `-ise' to `-ize' throughout.
 dnl
@@ -37,7 +40,7 @@ dnl
 
 dnl----- Common files distribution --------------------------- *@--NOTICE--@*
 dnl
-dnl $Id: aclocal.glob,v 1.2 1999/05/13 22:57:23 mdw Exp $
+dnl $Id: aclocal.glob,v 1.3 1999/07/17 10:27:44 mdw Exp $
 
 dnl --- *@-AC_PROG_CC_STDC-@* ---
 dnl
@@ -1045,6 +1048,88 @@ AC_DEFUN(AM_SYS_POSIX_TERMIOS,
 
 dnl----- Macros by Mark Wooding ------------------------------ *@--IGNORE--@*
 
+dnl --- *@-mdw_DECL_ENVIRON-@* ---
+dnl
+dnl Author:    Mark Wooding
+dnl
+dnl Synopsis:  mdw_DECL_ENVIRON
+dnl
+dnl Arguments: ---
+dnl
+dnl Use:       If the global variable `environ' is declared anywhere
+dnl            `obvious', then define the preprocessor symbol DECL_ENVIRON.
+
+AC_DEFUN(mdw_DECL_ENVIRON,
+[AC_CHECK_HEADERS([unistd.h])
+AC_CACHE_CHECK([for declaration of \`environ'], sw_cv_environ,
+[AC_EGREP_CPP(environ, 
+[#include <sys/types.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif], [sw_cv_environ=yes], [sw_cv_environ=no])])
+if test $sw_cv_environ = yes; then
+  AC_DEFINE(DECL_ENVIRON)
+fi])
+
+dnl --- *@-mdw_CURSES-@* ---
+dnl
+dnl Author:    Mark Wooding
+dnl
+dnl Synopsis:  mdw_CURSES
+dnl
+dnl Arguments: ---
+dnl
+dnl Use:       Attempts to find an implementation of `curses'.  A `curses'
+dnl            library (`ncurses' by preference) will be added to `LIBS'.
+dnl            If a library could be found, the preprocessor symbol
+dnl            HAVE_CURSES is defined, along with one of HAVE_NCURSES_H,
+dnl            HAVE_NCURSES_NCURSES_H or HAVE_CURSES_H, suggesting which
+dnl            header to include (in the obvious way).
+
+AC_DEFUN(mdw_CURSES,
+[mdw_CHECK_MANYLIBS(newwin, ncurses curses, AC_DEFINE(HAVE_CURSES))
+if test $mdw_cv_lib_newwin != no; then
+AC_CHECK_HEADERS([ncurses.h ncurses/ncurses.h curses.h], [break])
+if test "$ac_cv_header_ncurses_h" = "no" &&
+   test "$ac_cv_header_ncurses_ncurses_h" = "no" &&
+   test "$ac_cv_header_curses_h" = "no"; then
+     AC_MSG_WARN([couldn't find a \`curses' header.  Assuming \`curses.h'.])
+     AC_DEFINE(HAVE_CURSES_H)
+fi
+AC_CHECK_FUNCS(wresize)
+fi])
+
+dnl --- *@-mdw_TYPE_SSIZE_T-@* ---
+dnl
+dnl Author:    Mark Wooding
+dnl
+dnl Synopsis:  mdw_TYPE_SSIZE_T
+dnl
+dnl Arguments: ---
+dnl
+dnl Use:       Finds an appropriate type for `ssize_t' if there isn't a
+dnl            sensible one to use already.
+
+AC_DEFUN(mdw_TYPE_SSIZE_T,
+[AC_CACHE_CHECK(for ssize_t, sw_cv_ssize_t,
+[AC_EGREP_CPP(ssize_t,
+[#include <sys/types.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif],
+[sw_cv_ssize_t=yes], [sw_cv_ssize_t=no])])
+if test $sw_cv_ssize_t = no; then
+  AC_DEFINE(ssize_t, int)
+fi])
+
 dnl --- *@-mdw_REQUIRE-@* ---
 dnl
 dnl Author:    Mark Wooding