12 files changed, 19 insertions, 12 deletions
diff --git a/tools/src/CMakeLists.txt b/tools/src/CMakeLists.txt
index 757c9cd..8c3e361 100644
--- a/tools/src/CMakeLists.txt
+++ b/tools/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC C)
 
 #-- Add the h5diff and test executables
diff --git a/tools/src/h5copy/CMakeLists.txt b/tools/src/h5copy/CMakeLists.txt
index 85233ef..29888f2 100644
--- a/tools/src/h5copy/CMakeLists.txt
+++ b/tools/src/h5copy/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_H5COPY C)
 
 # --------------------------------------------------------------------
diff --git a/tools/src/h5diff/CMakeLists.txt b/tools/src/h5diff/CMakeLists.txt
index 2009a14..93e99cf 100644
--- a/tools/src/h5diff/CMakeLists.txt
+++ b/tools/src/h5diff/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_H5DIFF C)
 
 # --------------------------------------------------------------------
diff --git a/tools/src/h5dump/CMakeLists.txt b/tools/src/h5dump/CMakeLists.txt
index 383b04e..dbf92cf 100644
--- a/tools/src/h5dump/CMakeLists.txt
+++ b/tools/src/h5dump/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_H5DUMP C)
 
 # --------------------------------------------------------------------
diff --git a/tools/src/h5format_convert/CMakeLists.txt b/tools/src/h5format_convert/CMakeLists.txt
index 540be8c..70c07ee 100644
--- a/tools/src/h5format_convert/CMakeLists.txt
+++ b/tools/src/h5format_convert/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_H5FC C)
 
 # --------------------------------------------------------------------
diff --git a/tools/src/h5import/CMakeLists.txt b/tools/src/h5import/CMakeLists.txt
index dd7921d..a52467e 100644
--- a/tools/src/h5import/CMakeLists.txt
+++ b/tools/src/h5import/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_H5IMPORT C)
 
 # --------------------------------------------------------------------
diff --git a/tools/src/h5jam/CMakeLists.txt b/tools/src/h5jam/CMakeLists.txt
index f430417..69d4c4d 100644
--- a/tools/src/h5jam/CMakeLists.txt
+++ b/tools/src/h5jam/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_H5JAM C)
 
 # --------------------------------------------------------------------
diff --git a/tools/src/h5ls/CMakeLists.txt b/tools/src/h5ls/CMakeLists.txt
index ffbb1c7..7be33b5 100644
--- a/tools/src/h5ls/CMakeLists.txt
+++ b/tools/src/h5ls/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_H5LS C)
 
 #-----------------------------------------------------------------------------
diff --git a/tools/src/h5repack/CMakeLists.txt b/tools/src/h5repack/CMakeLists.txt
index 4a1430e..967e8d7 100644
--- a/tools/src/h5repack/CMakeLists.txt
+++ b/tools/src/h5repack/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_H5REPACK C)
 
 # --------------------------------------------------------------------
diff --git a/tools/src/h5repack/h5repack_refs.c b/tools/src/h5repack/h5repack_refs.c
index e6a747d..2685823 100644
--- a/tools/src/h5repack/h5repack_refs.c
+++ b/tools/src/h5repack/h5repack_refs.c
@@ -530,9 +530,16 @@ static int copy_refs_attr(hid_t loc_in,
                     ref_comp_size = NULL;
                 }
             }
+            /* This line below needs to be moved in this loop instead of inserting outside. Otherwise,
+               ref_comp_field_n may be >0 for the next attribute, which may not be
+               the reference type and will be accidently treated as the reference type.
+               It will then cause the H5Acreate2 failed since that attribute is already created.
+               KY 2020-02-07
+            */
+            is_ref_comp = (ref_comp_field_n > 0);
+
         }
 
-        is_ref_comp = (ref_comp_field_n > 0);
 
         if (!(is_ref || is_ref_vlen || is_ref_array || is_ref_comp)) {
             if (H5Tclose(mtype_id) < 0)
diff --git a/tools/src/h5stat/CMakeLists.txt b/tools/src/h5stat/CMakeLists.txt
index 55c675f..f6cc542 100644
--- a/tools/src/h5stat/CMakeLists.txt
+++ b/tools/src/h5stat/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_H5STAT C)
 
 # --------------------------------------------------------------------
diff --git a/tools/src/misc/CMakeLists.txt b/tools/src/misc/CMakeLists.txt
index 6b41d7f..16e4555 100644
--- a/tools/src/misc/CMakeLists.txt
+++ b/tools/src/misc/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.10)
+cmake_minimum_required (VERSION 3.12)
 project (HDF5_TOOLS_SRC_MISC C)
 
 # --------------------------------------------------------------------