Detect undefined PATH_MAX

POSIX does not require PATH_MAX be defined when there is not actual
limit to its value.  This affects HURD based systems.  Work around
this by defining PATH_MAX to 4096 (as on Linux) when this is not
defined.

Also, clean up inclusions of limits.h and remove autoconf check for
this header as we do not use macro shields for its inclusion anyway.

Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/configure.ac b/configure.ac
index 747c8b75..11b6b11a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -172,7 +172,7 @@ AS_IF([test "x$with_fetch" != "xno"],
 AM_CONDITIONAL([HAVE_LIBFETCH], [test "x$ac_cv_lib_fetch_fetchParseURL" = "xyes"])
 
 # Checks for header files.
-AC_CHECK_HEADERS([fcntl.h glob.h libintl.h limits.h locale.h mntent.h string.h strings.h \
+AC_CHECK_HEADERS([fcntl.h glob.h libintl.h locale.h mntent.h string.h strings.h \
                   sys/ioctl.h sys/mount.h sys/param.h sys/statvfs.h sys/syslimits.h \
                   sys/time.h sys/types.h sys/ucred.h syslog.h wchar.h])
 
@@ -185,6 +185,7 @@ AC_TYPE_SIZE_T
 AC_STRUCT_TM
 AC_TYPE_UID_T
 AC_STRUCT_DIRENT_D_TYPE
+PATH_MAX_DEFINED
 
 # Checks for library functions.
 AC_FUNC_FORK