[Libsysio-commit] HEAD: libsysio configure.in

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

Update of /cvsroot/libsysio/libsysio
In directory sc8-pr-cvs6.sourceforge.net:/tmp/cvs-serv13675

Modified Files:
	configure.in 
Log Message:


Fix readlink type test and add a check for any kind of symlink support at
all.


Index: configure.in
===================================================================
RCS file: /cvsroot/libsysio/libsysio/configure.in,v
retrieving revision 1.28
retrieving revision 1.29
diff -u -w -b -B -p -r1.28 -r1.29
--- configure.in	28 Mar 2007 21:30:09 -0000	1.28
+++ configure.in	12 Apr 2007 21:22:43 -0000	1.29
@@ -219,12 +219,6 @@ case "$host_os" in
 	# These systems are always xcoff
 	xcoff=yes
 	elf=no
-	# ... and always needed...
-	AC_DEFINE(__USE_LARGEFILE64)
-	AC_DEFINE(_LARGE_FILES)
-	AC_DEFINE(_LARGE_FILE_API)
-	AC_DEFINE(_ALL_SOURCE)
-	AC_DEFINE(_XOPEN_SOURCE_EXTENDED)
 	;;
 esac
 
@@ -238,18 +232,50 @@ if test "$machine" = rs6000; then
 	machine="powerpc"
 fi
 
-AC_MSG_CHECKING(if readlink returns ssize_t)
+case "$host_os" in
+  gnu* | linux*)
+	AC_DEFINE(_XOPEN_SOURCE, 600)
+	;;
+  aix*)
+	# ... and always needed...
+	AC_DEFINE(__USE_LARGEFILE64)
+	AC_DEFINE(_LARGE_FILES)
+	AC_DEFINE(_LARGE_FILE_API)
+	AC_DEFINE(_ALL_SOURCE)
+	AC_DEFINE(_XOPEN_SOURCE_EXTENDED)
+	;;
+esac
+
+AC_MSG_CHECKING(for symlink support)
+AC_TRY_COMPILE([
+#include <sys/types.h>
+#include <sys/stat.h>
+],[
+#ifndef S_ISLNK
+#error
+#endif
+],
+	symlink_support="yes",
+	symlink_support="no"
+)
+AC_MSG_RESULT($symlink_support)
+
+if test x$symlink_support = xyes; then
+	AC_MSG_CHECKING(if readlink returns int)
 AC_TRY_COMPILE([
 #include <unistd.h>
 ],[
-	extern ssize_t readlink(const char *, char *, size_t);
+		extern int readlink(const char *, char *, size_t);
 ],
-	readlink_returns_ssize_t="yes",
-	readlink_returns_ssize_t="no"
+		readlink_returns_int="yes",
+		readlink_returns_int="no"
 )
-AC_MSG_RESULT($readlink_returns_ssize_t)
-if test x$readlink_returns_ssize_t = xyes; then
-	AC_DEFINE(HAVE_POSIX_1003_READLINK, 1, [readlink returns ssize_t])
+	AC_MSG_RESULT($readlink_returns_int)
+	if test x$readlink_returns_int = no; then
+		AC_DEFINE(HAVE_POSIX_1003_READLINK,
+			  1,
+			  [readlink returns ssize_t])
+	fi
 fi
 
 # If we can't provoke the declaration of stat64 then we assume the