fixes for sunos brokenness

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@2875 ec53bebd-3082-4978-b11e-865c3cabbd6b

configure.in

@@ -11,6 +11,12 @@ AC_CANONICAL_HOST
 CANONICAL_HOST=$host
 AC_SUBST(CANONICAL_HOST)
 
+case "$host" in 
+*-*-sunos4*)
+	AC_DEFINE(SunOS, 4)
+	;;
+esac
+
 dnl Checks for programs.
 AC_PROG_CC
 
@@ -22,7 +28,7 @@ AC_PROG_AWK
 AC_KRB_PROG_LN_S
 
 if test "$GCC" = "yes"; then
-  WFLAGS="-Wall -Wno-unused -Wconversion -Wmissing-prototypes"
+  WFLAGS="-Wall -Wno-unused -Wmissing-prototypes"
 fi
 AC_SUBST(WFLAGS)
 CFLAGS="-g"
@@ -172,6 +178,22 @@ AC_BROKEN(seteuid strcasecmp strdup strerror strftime)
 AC_BROKEN(strlwr strnlen strsep strtok_r strupr unsetenv)
 AC_BROKEN(verr verrx vsyslog vwarn vwarnx warn warnx)
 
+AC_CACHE_CHECK(if realloc if broken, ac_cv_func_realloc_broken, [
+ac_cv_func_realloc_broken=no
+AC_TRY_RUN([
+#include <stddef.h>
+#include <stdlib.h>
+
+int main()
+{
+	return realloc(NULL, 17) == NULL;
+}
+],:, ac_cv_func_realloc_broken=yes, :)
+])
+if test "$ac_cv_func_realloc_broken" = yes ; then
+	AC_DEFINE(BROKEN_REALLOC)
+fi
+
 dnl AC_KRB_FUNC_GETCWD_BROKEN
 
 dnl
@@ -251,6 +273,8 @@ AC_TYPE_PID_T
 AC_TYPE_UID_T
 AC_TYPE_OFF_T
 AC_TYPE_SIZE_T
+AC_CHECK_TYPE(ssize_t, int)
+AC_TYPE_SIG_ATOMIC_T
 
 dnl AC_SUBST(LIBOBJS)