diff -up pmdk-convert-1.5/CMakeLists.txt.orig pmdk-convert-1.5/CMakeLists.txt
--- pmdk-convert-1.5/CMakeLists.txt.orig	2018-10-26 12:23:57.000000000 -0400
+++ pmdk-convert-1.5/CMakeLists.txt	2019-03-22 12:43:08.677276000 -0400
@@ -31,7 +31,7 @@
 
 include(${CMAKE_SOURCE_DIR}/utils/utils.cmake)
 
-cmake_minimum_required(VERSION 3.3)
+cmake_minimum_required(VERSION 2.8)
 project(pmdk-convert C)
 
 set(VERSION_MAJOR 1)
@@ -92,6 +92,7 @@ macro(add_c_flag flag)
 endmacro()
 
 if(NOT MSVC)
+	add_c_flag(-std=gnu99)
 	add_c_flag(-fno-common)
 	add_c_flag(-Wall)
 	add_c_flag(-Wconversion)
diff -up pmdk-convert-1.5/tests/CMakeLists.txt.orig pmdk-convert-1.5/tests/CMakeLists.txt
--- pmdk-convert-1.5/tests/CMakeLists.txt.orig	2018-10-26 12:23:57.000000000 -0400
+++ pmdk-convert-1.5/tests/CMakeLists.txt	2019-03-22 12:43:08.684278000 -0400
@@ -65,7 +65,7 @@ function(test name file)
 		-DSRC_DIR=${CMAKE_CURRENT_SOURCE_DIR}
 		-DBIN_DIR=${CMAKE_CURRENT_BINARY_DIR}/${file}
 		-DVERSIONS=${VERSIONS}
-		-DCONFIG=$<CONFIG>
+		-DCONFIG=$<CONFIGURATION>
 		-P ${CMAKE_CURRENT_SOURCE_DIR}/${file}.cmake)
 
 	set_tests_properties(${name} PROPERTIES
diff -up pmdk-convert-1.5/tests/helpers.cmake.orig pmdk-convert-1.5/tests/helpers.cmake
--- pmdk-convert-1.5/tests/helpers.cmake.orig	2018-10-26 12:23:57.000000000 -0400
+++ pmdk-convert-1.5/tests/helpers.cmake	2019-03-22 12:47:31.214242000 -0400
@@ -29,7 +29,7 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-cmake_minimum_required(VERSION 3.3)
+cmake_minimum_required(VERSION 2.8)
 set(DIR ${PARENT_DIR}/😘⠝⠧⠍⠇ɗPMDKӜ⥺🙋${TEST_NAME})
 
 # convert the version list to the array
@@ -49,10 +49,11 @@ function(check_open pool correct)
 	string(REPLACE " " ";" correct ${correct})
 	foreach(it ${VERSIONS})
 		string(REPLACE "." "" app ${it})
-		if (${it} IN_LIST correct)
-			execute(0 ${TEST_DIR}/open_${app} ${pool})
-		else()
+		list(FIND correct ${it} index)
+		if (index LESS 0)
 			execute(2 ${TEST_DIR}/open_${app} ${pool})
+		else()
+			execute(0 ${TEST_DIR}/open_${app} ${pool})
 		endif()
 	endforeach(it)
 endfunction(check_open)