Update CMake code to 3.18 minimum version (#2080)

* Update CMake code to 3.18 minimum version

* Updated release note

11 files changed, 14 insertions, 18 deletions

diff --git a/java/CMakeLists.txt b/java/CMakeLists.txt
index cc22d9e..86fab9d 100644
--- a/java/CMakeLists.txt
+++ b/java/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDF5_JAVA C Java)
 
 set (CMAKE_MODULE_PATH "${HDF_RESOURCES_DIR};${HDF_RESOURCES_DIR}")
@@ -9,14 +9,10 @@ find_package (Java)
 #-----------------------------------------------------------------------------
 include (${HDF_RESOURCES_DIR}/UseJava.cmake)
 
-if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15.0")
-  message (VERBOSE "JAVA: JAVA_HOME=$ENV{JAVA_HOME} JAVA_ROOT=$ENV{JAVA_ROOT}")
-endif ()
+message (VERBOSE "JAVA: JAVA_HOME=$ENV{JAVA_HOME} JAVA_ROOT=$ENV{JAVA_ROOT}")
 find_package (JNI)
-if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15.0")
-  message (VERBOSE "JNI_LIBRARIES=${JNI_LIBRARIES}")
-  message (VERBOSE "JNI_INCLUDE_DIRS=${JNI_INCLUDE_DIRS}")
-endif ()
+message (VERBOSE "JNI_LIBRARIES=${JNI_LIBRARIES}")
+message (VERBOSE "JNI_INCLUDE_DIRS=${JNI_INCLUDE_DIRS}")
 
 
 if (WIN32)
diff --git a/java/examples/CMakeLists.txt b/java/examples/CMakeLists.txt
index 3412c40..f9d0310 100644
--- a/java/examples/CMakeLists.txt
+++ b/java/examples/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDFJAVA_EXAMPLES Java)
 
 add_subdirectory (datasets)
diff --git a/java/examples/datasets/CMakeLists.txt b/java/examples/datasets/CMakeLists.txt
index f6d733f..4403336 100644
--- a/java/examples/datasets/CMakeLists.txt
+++ b/java/examples/datasets/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDFJAVA_EXAMPLES_DATASETS Java)
 
 set (CMAKE_VERBOSE_MAKEFILE 1)
diff --git a/java/examples/datatypes/CMakeLists.txt b/java/examples/datatypes/CMakeLists.txt
index 75dab75..1690701 100644
--- a/java/examples/datatypes/CMakeLists.txt
+++ b/java/examples/datatypes/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDFJAVA_EXAMPLES_DATATYPES Java)
 
 set (CMAKE_VERBOSE_MAKEFILE 1)
diff --git a/java/examples/groups/CMakeLists.txt b/java/examples/groups/CMakeLists.txt
index 5393afd..1d63c15 100644
--- a/java/examples/groups/CMakeLists.txt
+++ b/java/examples/groups/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDFJAVA_EXAMPLES_GROUPS Java)
 
 set (CMAKE_VERBOSE_MAKEFILE 1)
diff --git a/java/examples/intro/CMakeLists.txt b/java/examples/intro/CMakeLists.txt
index b1c35bc..a1e2a51 100644
--- a/java/examples/intro/CMakeLists.txt
+++ b/java/examples/intro/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDFJAVA_EXAMPLES_INTRO Java)
 
 set (CMAKE_VERBOSE_MAKEFILE 1)
diff --git a/java/src/CMakeLists.txt b/java/src/CMakeLists.txt
index 0bfbaf7..46f49b4 100644
--- a/java/src/CMakeLists.txt
+++ b/java/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDF5_JAVA_SRC C)
 
 #-----------------------------------------------------------------------------
diff --git a/java/src/hdf/CMakeLists.txt b/java/src/hdf/CMakeLists.txt
index 5660158..30c2726 100644
--- a/java/src/hdf/CMakeLists.txt
+++ b/java/src/hdf/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDF5_JAVA_HDF C)
 
 add_subdirectory (hdf5lib)
diff --git a/java/src/hdf/hdf5lib/CMakeLists.txt b/java/src/hdf/hdf5lib/CMakeLists.txt
index 0b716f7..7c9cc4b 100644
--- a/java/src/hdf/hdf5lib/CMakeLists.txt
+++ b/java/src/hdf/hdf5lib/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDF5_JAVA_HDF_HDF5 Java)
 
 set (CMAKE_VERBOSE_MAKEFILE 1)
diff --git a/java/src/jni/CMakeLists.txt b/java/src/jni/CMakeLists.txt
index d2f512f..cd5320b 100644
--- a/java/src/jni/CMakeLists.txt
+++ b/java/src/jni/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDF5_JAVA_JNI C)
 
 set (HDF5_JAVA_JNI_CSRCS
diff --git a/java/test/CMakeLists.txt b/java/test/CMakeLists.txt
index cee0432..9f148e2 100644
--- a/java/test/CMakeLists.txt
+++ b/java/test/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.12)
+cmake_minimum_required (VERSION 3.18)
 project (HDF5_JAVA_TEST Java)
 
 set (CMAKE_VERBOSE_MAKEFILE 1)