[PATCH:xbiff 1/2] Use <paths.h> and _PATH_MAILDIR to find mailboxes if present

[Alan Coopersmith]

Use autoconf to check for paths.h on all systems, instead of
only including it #ifdef CSRG_BASED

Makes _PATH_MAILDIR the preferred mail directory path on all systems
if it's defined, falls back to old per-system hardcoded paths if not.

Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
---
 MailboxP.h   |   26 ++++++++++++++------------
 configure.ac |    3 +++
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/MailboxP.h b/MailboxP.h
index 937f895..f21d62a 100644
--- a/MailboxP.h
+++ b/MailboxP.h
@@ -33,24 +33,26 @@ from the X Consortium.
 #ifndef _XawMailboxP_h
 #define _XawMailboxP_h
 
+#include "config.h"
 #include "Mailbox.h"
 #include <X11/Xaw/SimpleP.h>
 
-#if defined(SYSV)
-#define MAILBOX_DIRECTORY "/usr/mail"
-#elif defined(SVR4)
-#define MAILBOX_DIRECTORY "/var/mail"
-#elif defined(CSRG_BASED)
-#include <paths.h>
-#ifdef _PATH_MAILDIR
-#define MAILBOX_DIRECTORY _PATH_MAILDIR
-#endif
-#elif defined(__linux__)
-#define MAILBOX_DIRECTORY "/var/spool/mail"
+#ifdef HAVE_PATHS_H
+# include <paths.h>
 #endif
 
 #ifndef MAILBOX_DIRECTORY
-#define MAILBOX_DIRECTORY "/usr/spool/mail"
+# ifdef _PATH_MAILDIR
+#  define MAILBOX_DIRECTORY _PATH_MAILDIR
+# elif defined(SYSV)
+#  define MAILBOX_DIRECTORY "/usr/mail"
+# elif defined(SVR4)
+#  define MAILBOX_DIRECTORY "/var/mail"
+# elif defined(__linux__)
+#  define MAILBOX_DIRECTORY "/var/spool/mail"
+# else
+#  define MAILBOX_DIRECTORY "/usr/spool/mail"
+# endif
 #endif
 
 typedef struct {			/* new fields for mailbox widget */
diff --git a/configure.ac b/configure.ac
index 5891c6c..05937be 100644
--- a/configure.ac
+++ b/configure.ac
@@ -41,4 +41,7 @@ XORG_DEFAULT_OPTIONS
 # Checks for pkg-config packages
 PKG_CHECK_MODULES(XBIFF, xaw7 xmu xbitmaps xext x11)
 
+# Checks for headers
+AC_CHECK_HEADERS([paths.h])
+
 AC_OUTPUT([Makefile])
-- 
1.7.3.2