[Libsysio-commit] HEAD: libsysio configure.in

[Lee W. <lw...@us...>]

Update of /cvsroot/libsysio/libsysio
In directory sc8-pr-cvs6.sourceforge.net:/tmp/cvs-serv2466

Modified Files:
	configure.in 
Log Message:


Fix return type for readlink with newer versions of glibc

>From Oleg Drokin at Cluster File Systems:

[...] newer glibc version readlink returns ssize_t instead of int, and 
thus libsysio cannot be compiled anymore due to conflicting 
declarations.


Index: configure.in
===================================================================
RCS file: /cvsroot/libsysio/libsysio/configure.in,v
retrieving revision 1.25
retrieving revision 1.26
diff -u -w -b -B -p -r1.25 -r1.26
--- configure.in	19 Dec 2006 21:22:33 -0000	1.25
+++ configure.in	2 Jan 2007 20:44:10 -0000	1.26
@@ -238,6 +238,20 @@ if test "$machine" = rs6000; then
 	machine="powerpc"
 fi
 
+AC_MSG_CHECKING(if readlink returns ssize_t)
+AC_TRY_COMPILE([
+	include <unistd.h>
+],[
+	ssize_t readlink(const char *, char *, size_t);
+],
+	readlink_returns_ssize_t="yes",
+	readlink_returns_ssize_t="yes"
+)
+AC_MSG_RESULT($readlink_returns_ssize_t)
+if test x$readlink_returns_ssize_t = xyes; then
+	AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
+fi
+
 # If we can't provoke the declaration of stat64 then we assume the
 # environment supports 64-bit file support naturally. Beware!
 AC_MSG_CHECKING(whether _LARGEFILE64_SOURCE definition is required)