diff --git a/.github/workflows/fedora35/Dockerfile b/.github/workflows/fedora35/Dockerfile
new file mode 100644
index 0000000..6b84fcb
--- /dev/null
+++ b/.github/workflows/fedora35/Dockerfile
@@ -0,0 +1,3 @@
+FROM fedora:35
+COPY entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]
diff --git a/.github/workflows/fedora35/action.yaml b/.github/workflows/fedora35/action.yaml
new file mode 100644
index 0000000..3e42042
--- /dev/null
+++ b/.github/workflows/fedora35/action.yaml
@@ -0,0 +1,15 @@
+name: 'Compile QCDLOOP'
+description: 'QCDLOOP'
+inputs:
+  who-to-greet:  # id of input
+    description: 'Set something'
+    required: true
+    default: 'Hi !'
+outputs:
+  time: # id of output
+    description: 'Some result'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+  args:
+    - ${{ inputs.who-to-greet }}
diff --git a/.github/workflows/fedora35/entrypoint.sh b/.github/workflows/fedora35/entrypoint.sh
new file mode 100755
index 0000000..75d439c
--- /dev/null
+++ b/.github/workflows/fedora35/entrypoint.sh
@@ -0,0 +1,12 @@
+#!/bin/sh -l
+set -x
+uname -a 
+cat /etc/issue
+dnf -y install  gcc gcc-c++ gcc-gfortran make which cmake cmake-data cmake-filesystem 
+
+cmake -S . -B BUILD -DCMAKE_INSTALL_PREFIX=$(pwd)/INSTALL
+cmake --build BUILD
+cmake --install BUILD
+
+out=$?
+echo ::set-output name=out::$out
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..31f43b1
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,22 @@
+name: build
+on:
+ push:
+ pull_request:
+ schedule:
+#Every 50 days at midnight 
+    - cron:  "0 0 1/600 * *"
+
+jobs:
+
+  compilejobFedora35:
+    if: "!contains(github.event.head_commit.message, 'skip ci')"
+    runs-on: ubuntu-latest
+    name: CI_on_Fedora35
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Compile
+      id: compileindocker
+      uses: ./.github/workflows/fedora35
+    - name: Get the output status
+      run: exit ${{ steps.compileindocker.outputs.out }}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 412b98c..010d4da 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,18 +15,42 @@ if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
 endif()
 
 project(qcdloop)
-
+include(GNUInstallDirs)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
-set(VERSION "\"2.0.9\"")
-set(CMAKE_CXX_FLAGS "-Wall -Wextra -march=nocona -mtune=haswell -fvisibility-inlines-hidden -fmessage-length=0 -ftree-vectorize -fPIC -fstack-protector-strong -O2 -pipe -fext-numeric-literals")
-set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=address -fPIC ${CMAKE_CXX_FLAGS}" CACHE STRING "debug compile flags" FORCE)
-set(CMAKE_EXE_LINKER_FLAGS_DEBUG "-fsanitize=address" CACHE STRING "debug linker flags" FORCE)
+set(VERSION 2.0.9)
+include(CheckCXXCompilerFlag)
+if (${CMAKE_CXX_COMPILER_ID} MATCHES "GNU")
+  set(CXX_FLAGS_TO_CHECK "-Wall -Wextra -march=nocona -mtune=haswell -fvisibility-inlines-hidden -fmessage-length=0 -ftree-vectorize -fstack-protector-strong -O2 -pipe -fext-numeric-literals")
+  set(CXX_FLAGS_DEBUG_TO_CHECK "${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=address ${CMAKE_CXX_FLAGS_TO_CHECK}")
+  set(CMAKE_EXE_LINKER_FLAGS_DEBUG "-fsanitize=address")
+else()
+  set(CXX_FLAGS_TO_CHECK "-Wall -Wextra")
+  set(CXX_FLAGS_DEBUG_TO_CHECK "${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=address ${CMAKE_CXX_FLAGS_TO_CHECK}")
+endif()
+set(CXX_FLAGS_PASSED )
+set(CXX_FLAGS_DEBUG_PASSED )
+foreach(fl ${CXX_FLAGS_TO_CHECK})
+  CHECK_CXX_COMPILER_FLAG(${fl} COMPILER_SUPPORTS_${fl})
+  if(COMPILER_SUPPORTS_${fl})
+    set(CXX_FLAGS_PASSED "${CXX_FLAGS_PASSED} ${fl}" )
+  endif()
+endforeach()
+foreach(fl ${CXX_FLAGS_DEBUG_TO_CHECK})
+  CHECK_CXX_COMPILER_FLAG(${fl} COMPILER_SUPPORTS_${fl})
+  if(COMPILER_SUPPORTS_${fl})
+    set(CXX_FLAGS_DEBUG_PASSED "${CXX_FLAGS_DEBUG_PASSED} ${fl}" )
+  endif()
+endforeach()
+set(CMAKE_CXX_FLAGS ${CXX_FLAGS_PASSED})
+set(CMAKE_CXX_FLAGS_DEBUG ${CXX_FLAGS_DEBUG_PASSED})
+message(STATUS "CMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}")
+message(STATUS "CMAKE_CXX_FLAGS_DEBUG=${CMAKE_CXX_FLAGS_DEBUG}")
 set(prefix ${CMAKE_INSTALL_PREFIX})
-set(exec_prefix "${prefix}")
-set(includedir "${prefix}/include")
-set(libdir "${prefix}/lib")
+set(exec_prefix ${CMAKE_INSTALL_PREFIX})
+set(includedir "${CMAKE_INSTALL_INCLUDE_DIR}")
+set(libdir "${CMAKE_INSTALL_LIBDIR}")
 
 configure_file(
   "${PROJECT_SOURCE_DIR}/src/qcdloop/config.h.in"
@@ -86,13 +110,13 @@ add_library(qcdloop SHARED src/box.cc
                          ${Headers}
 )
 
-target_link_libraries(qcdloop)
+target_link_libraries(qcdloop ${QUADMATH_LIBRARY})
 install(FILES ${CMAKE_BINARY_DIR}/src/qcdloop-config
   DESTINATION bin PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ
   GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
-install(FILES ${PROJECT_SOURCE_DIR}/src/qcdloop.pc DESTINATION lib/pkgconfig)
-install(DIRECTORY src/qcdloop DESTINATION include)
-install(TARGETS qcdloop DESTINATION lib)
+install(FILES ${PROJECT_SOURCE_DIR}/src/qcdloop.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+install(DIRECTORY src/qcdloop DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+install(TARGETS qcdloop DESTINATION ${CMAKE_INSTALL_LIBDIR})
 
 # enable disable fortran/wrapper (to avoid name conflicts with ql1.x)
 option(ENABLE_FORTRAN_WRAPPER "Enable fortran wrapper" ON)
diff --git a/src/qcdloop/config.h.in b/src/qcdloop/config.h.in
index 07f5548..a44b122 100644
--- a/src/qcdloop/config.h.in
+++ b/src/qcdloop/config.h.in
@@ -1 +1 @@
-#define VERSION @VERSION@
+#define VERSION "@VERSION@"