Add cross compiling warnings and errors.

Now require --enable-x-compile if cross compiling.
Add tests for threadsafe/reentrant functions.
Add tests for setconcurrency functions.

configure.in

@@ -30,6 +30,8 @@ OL_ARG_ENABLE(cache,[  --enable-cache	enable caching], yes)dnl
 OL_ARG_ENABLE(dns,[  --enable-dns		enable dns support], no)dnl
 OL_ARG_ENABLE(referrals,[  --enable-referrals	enable referrals], yes)dnl
 OL_ARG_ENABLE(cldap,[  --enable-cldap	enable connectionless ldap], no)dnl
+OL_ARG_ENABLE(x_compile,[  --enable-x-compile	enable cross compiling],
+	no, [yes no])dnl
 
 dnl General "with" options
 OL_ARG_WITH(kerberos,[  --with-kerberos	use Kerberos],
@@ -200,9 +202,23 @@ AC_PATH_PROG(FINGER, finger, /usr/ucb/finger, $PATH:/usr/ucb)
 
 dnl Checks the compiler and UNIX Variants
 AC_PROG_CC
+
+if test $cross_compiling = yes -a $ol_enable_x_compile = yes; then
+	AC_WARN([cross compiling....  go for it])
+
+elif test $cross_compiling = no -a $ol_enable_x_compile = yes; then
+	AC_WARN([programs compiled here do run here...])
+	AC_ERROR([  if not cross compiling, use --disable-x-compile.])
+
+elif test $cross_compiling = yes -a $ol_enable_x_compile = no; then
+	AC_WARN([programs compiled here do not run here...])
+	AC_ERROR([  if cross compiling,  add --enable-x-compile.])
+fi
+
 AC_PROG_GCC_TRADITIONAL
 AC_PROG_CPP
 
+
 AC_AIX
 AC_ISC_POSIX
 AC_MINIX
@@ -386,12 +402,18 @@ if test $ol_with_threads = auto -o $ol_with_threads = posix ; then
 
 			dnl Check functions for compatibility
 			AC_CHECK_FUNCS(pthread_kill)
-dnl			AC_CHECK_FUNCS(
+dnl			AC_CHECK_FUNCS( \
 dnl				pthread_attr_create pthread_attr_init \
 dnl				pthread_attr_destroy pthread_attr_delete \
 dnl				pthread_attr_setdetachstate pthread_attr_setdetach_np \
 dnl			)
 
+			dnl Check for setconcurreny functions
+			AC_CHECK_FUNCS(	\
+				pthread_setconcurrency \
+				thr_setconcurrency \
+			)
+
 			dnl Check PREEMPTIVE Implementation 
 			if test $ol_with_preemptive = auto ; then
 				AC_MSG_CHECKING([for preemptive Pthread implementation])
@@ -424,6 +446,14 @@ main(argc, argv)
 int argc; char **argv;
 {
 	pthread_t t;
+
+#ifdef HAVE_PTHREAD_SETCONCURRENCY
+	(void) pthread_setconcurrency(2);
+#elif HAVE_THR_SETCONCURRENCY
+	/* Set Solaris LWP concurrency to 2 */
+	thr_setconcurrency(2);
+#endif
+
 	pthread_create(&t, NULL, (void *) task, NULL);
 
 #if HAVE_SCHED_YIELD
@@ -445,6 +475,17 @@ int argc; char **argv;
 				fi
 			fi
 
+			dnl check for reentrant/threadsafe functions
+			AC_CHECK_FUNCS(	\
+				feof_unlocked \
+				unlocked_feof \
+				ftrylockfile \
+				flockfile \
+				putc_unlocked \
+				gmtime_r \
+				strtok_r \
+			)
+
 			dnl restore DEFS/LIBS
 			CPPFLAGS="$save_CPPFLAGS"
 			LIBS="$save_LIBS"
@@ -919,7 +960,7 @@ if test $ol_enable_slurpd != no -a $ol_link_threads != no -a \
 fi
 
 if test $ol_enable_ldapd != no ; then
-	BUILD_SLURPD=yes
+	BUILD_LDAPD=yes
 fi
 
 dnl ----------------------------------------------------------------

include/portable.h.in

@@ -236,9 +236,18 @@ is provided ``as is'' without express or implied warranty.
 /* Define if you have the bcopy function.  */
 #undef HAVE_BCOPY
 
+/* Define if you have the feof_unlocked function.  */
+#undef HAVE_FEOF_UNLOCKED
+
 /* Define if you have the flock function.  */
 #undef HAVE_FLOCK
 
+/* Define if you have the flockfile function.  */
+#undef HAVE_FLOCKFILE
+
+/* Define if you have the ftrylockfile function.  */
+#undef HAVE_FTRYLOCKFILE
+
 /* Define if you have the getdtablesize function.  */
 #undef HAVE_GETDTABLESIZE
 
@@ -251,6 +260,9 @@ is provided ``as is'' without express or implied warranty.
 /* Define if you have the gettimeofday function.  */
 #undef HAVE_GETTIMEOFDAY
 
+/* Define if you have the gmtime_r function.  */
+#undef HAVE_GMTIME_R
+
 /* Define if you have the lockf function.  */
 #undef HAVE_LOCKF
 
@@ -269,9 +281,15 @@ is provided ``as is'' without express or implied warranty.
 /* Define if you have the pthread_kill function.  */
 #undef HAVE_PTHREAD_KILL
 
+/* Define if you have the pthread_setconcurrency function.  */
+#undef HAVE_PTHREAD_SETCONCURRENCY
+
 /* Define if you have the pthread_yield function.  */
 #undef HAVE_PTHREAD_YIELD
 
+/* Define if you have the putc_unlocked function.  */
+#undef HAVE_PUTC_UNLOCKED
+
 /* Define if you have the sched_yield function.  */
 #undef HAVE_SCHED_YIELD
 
@@ -314,6 +332,9 @@ is provided ``as is'' without express or implied warranty.
 /* Define if you have the strtod function.  */
 #undef HAVE_STRTOD
 
+/* Define if you have the strtok_r function.  */
+#undef HAVE_STRTOK_R
+
 /* Define if you have the strtol function.  */
 #undef HAVE_STRTOL
 
@@ -326,6 +347,12 @@ is provided ``as is'' without express or implied warranty.
 /* Define if you have the tempnam function.  */
 #undef HAVE_TEMPNAM
 
+/* Define if you have the thr_setconcurrency function.  */
+#undef HAVE_THR_SETCONCURRENCY
+
+/* Define if you have the unlocked_feof function.  */
+#undef HAVE_UNLOCKED_FEOF
+
 /* Define if you have the vsnprintf function.  */
 #undef HAVE_VSNPRINTF