[svn-r20894] Purpose:

    Updates configure definitions on linux.

Description:
    We only define _POSIX_SOURCE which only allows for the lowest level of
POSIX support (IEEE 1003.1), which is unsuitable for clock_gettime() functionality on modern linux systems. This symbol was changed to _POSIX_C_SOURCE=199506L, which gives the 1996 version of POSIX support and allows clock_gettime() and CLOCK_MONOTONIC to be found.

    We do not link to the BSD compatibility library, even though we define
_BSD_SOURCE.  -lbsd-compat was added to AM_LDFLAGS in accordance with GNU
recommendations.  This does not appear to change anything in the current
library.

Tested on:
    jam(linux32-LE) This was tested with various configure settings including
parallel, threadsafe, C++ and FORTRAN enabled.

1 files changed, 4 insertions, 3 deletions

diff --git a/configure b/configure
index 2aaf8ba..a1ef9a7 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Id: configure.in 20891 2011-05-23 17:02:39Z derobins .
+# From configure.in Id: configure.in 20892 2011-05-23 17:29:14Z derobins .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.68 for HDF5 1.9.82.
 #
@@ -22506,9 +22506,10 @@ case "$host_cpu-$host_vendor-$host_os" in
         AM_CPPFLAGS="-D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE $AM_CPPFLAGS"
     fi
 
-                                                            H5_CPPFLAGS="-D_POSIX_SOURCE $H5_CPPFLAGS"
+                                                                H5_CPPFLAGS="-D_POSIX_C_SOURCE=199506L $H5_CPPFLAGS"
 
-                    AM_CPPFLAGS="-D_BSD_SOURCE $AM_CPPFLAGS"
+                            AM_CPPFLAGS="-D_BSD_SOURCE $AM_CPPFLAGS"
+    AM_LDFLAGS="-lbsd-compat $AM_LDFLAGS"
     ;;
 esac