--- a/configure.ac
+++ b/configure.ac
@@ -1494,6 +1494,9 @@ case "$host_cpu-$host_vendor-$host_os" in
     ## however, we do not do this since it breaks the big test on some 
     ## older platforms.
     AM_CPPFLAGS="-D_BSD_SOURCE $AM_CPPFLAGS"
+
+    dnl _GNU_SOURCE is needed for vasprintf
+    AM_CPPFLAGS="-D_GNU_SOURCE $AM_CPPFLAGS"
     ;;
 esac
 
--- a/hl/src/H5LTanalyze.c
+++ b/hl/src/H5LTanalyze.c
@@ -49,6 +49,7 @@
 #define YY_FLEX_MINOR_VERSION 5
 
 #include <stdio.h>
+#include "H5pubconf.h"
 #ifdef H5_HAVE_UNISTD_H
 #include <unistd.h>
 #endif
--- a/test/cache_common.h
+++ b/test/cache_common.h
@@ -702,5 +702,9 @@ void validate_mdc_config(hid_t file_id,
                          hbool_t compare_init,
                          int test_num);
 
+hbool_t resize_configs_are_equal(const H5C_auto_size_ctl_t *a,
+                                 const H5C_auto_size_ctl_t *b,
+                                 hbool_t compare_init);
+
 #endif /* _CACHE_COMMON_H */
 
--- a/tools/h5repack/testh5repack_detect_szip.c
+++ b/tools/h5repack/testh5repack_detect_szip.c
@@ -18,6 +18,7 @@
 #include "h5tools.h"
 #include "h5tools_utils.h"
 #include "h5test.h"
+#include "h5tools_utils.h"
 
 
 /* Name of tool */
--- a/tools/misc/talign.c
+++ b/tools/misc/talign.c
@@ -23,6 +23,7 @@
 
 #include "hdf5.h"
 #include "H5private.h"
+#include "h5tools.h"
 
 const char *fname = "talign.h5";
 const char *setname = "align";