diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9771bb885..868e66687 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,10 @@
-cmake_minimum_required(VERSION 2.8.4 FATAL_ERROR)
+cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
+
+# CMP0075 Include file check macros honor CMAKE_REQUIRED_LIBRARIES
+# For more information see: https://cmake.org/cmake/help/latest/policy/CMP0075.html
+if(POLICY CMP0075)
+    cmake_policy(SET CMP0075 NEW)
+endif()
 
 file(STRINGS "VERSION" VERSION)
 
@@ -19,7 +25,8 @@ execute_process(COMMAND echo -n ${VERSION}
 
 execute_process(COMMAND git describe --always
                 OUTPUT_VARIABLE REVISION
-                OUTPUT_STRIP_TRAILING_WHITESPACE)
+                OUTPUT_STRIP_TRAILING_WHITESPACE
+                WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
 if(NOT REVISION)
   execute_process(COMMAND date +p%Y%m%d
                   OUTPUT_VARIABLE REVISION
diff --git a/src/lib/ebus/datatype.cpp b/src/lib/ebus/datatype.cpp
index f2d5b8fd5..7a3424c9d 100755
--- a/src/lib/ebus/datatype.cpp
+++ b/src/lib/ebus/datatype.cpp
@@ -68,8 +68,7 @@ bool DataType::dump(OutputFormat outputFormat, size_t length, bool appendDivisor
 }
 
 
-result_t StringDataType::readRawValue(size_t offset, size_t length, const SymbolString& input,
-                                      unsigned int* value) const {
+result_t StringDataType::readRawValue(size_t, size_t, const SymbolString&, unsigned int*) const {
   return RESULT_EMPTY;
 }
 
@@ -204,8 +203,7 @@ result_t StringDataType::writeSymbols(size_t offset, size_t length, istringstrea
 }
 
 
-result_t DateTimeDataType::readRawValue(size_t offset, size_t length, const SymbolString& input,
-                                        unsigned int* value) const {
+result_t DateTimeDataType::readRawValue(size_t, size_t, const SymbolString&, unsigned int*) const {
   return RESULT_EMPTY;
 }
 
@@ -353,7 +351,7 @@ result_t DateTimeDataType::readSymbols(size_t offset, size_t length, const Symbo
         }
         *output << dec << setfill('0') << setw(2) << static_cast<unsigned>(d) << "."
                 << setw(2) << static_cast<unsigned>(m) << "." << static_cast<unsigned>(y + 1900);
-        m = (int)(minutes%(24*60));
+        m = static_cast<int>(minutes%(24*60));
         d = m/60;
         *output << " " << setw(2) << dec << setfill('0') << static_cast<unsigned>(d);
         m -= d*60;
diff --git a/src/tools/ebuspicloader.cpp b/src/tools/ebuspicloader.cpp
index 86773dbe4..104d854f4 100644
--- a/src/tools/ebuspicloader.cpp
+++ b/src/tools/ebuspicloader.cpp
@@ -904,7 +904,7 @@ int main(int argc, char* argv[]) {
       printFileChecksum();
       exit(EXIT_SUCCESS);
     } else {
-      argp_help(&aargp, stderr, ARGP_HELP_STD_ERR, "ebuspicloader");
+      argp_help(&aargp, stderr, ARGP_HELP_STD_ERR, const_cast<char*>("ebuspicloader"));
       exit(EXIT_FAILURE);
     }
   }