diff --git a/.ci_support/run_docker_linux.sh b/.ci_support/run_docker_linux.sh
index c92c18d..13f4925 100755
--- a/.ci_support/run_docker_linux.sh
+++ b/.ci_support/run_docker_linux.sh
@@ -6,8 +6,8 @@ cd /tmp
 mkdir build && cd build
 cmake -DCMAKE_INSTALL_PREFIX=~/.local \
       -DCMAKE_UNITY_BUILD=ON -DCMAKE_UNITY_BUILD_BATCH_SIZE=32 \
-      -DCMAKE_CXX_FLAGS="-Wall -Wextra -Werror -D_GLIBCXX_ASSERTIONS" \
-      -DSWIG_COMPILE_FLAGS="-O1 -Wno-unused-parameter" \
+      -DCMAKE_CXX_FLAGS="-Wall -Wextra -Wpedantic -Wshadow -Werror -D_GLIBCXX_ASSERTIONS" \
+      -DSWIG_COMPILE_FLAGS="-O1 -Wno-unused-parameter -Wno-shadow" \
       -DSPHINX_FLAGS="-W -T -j4" \
       /io
 make install
@@ -19,6 +19,6 @@ uid=$1
 gid=$2
 if test -n "${uid}" -a -n "${gid}"
 then
-  sudo cp -r ~/.local/share/*/doc/html /io
+  sudo cp -r ~/.local/share/doc/*/html /io
   sudo chown -R ${uid}:${gid} /io/html
 fi
diff --git a/.ci_support/run_docker_mingw.sh b/.ci_support/run_docker_mingw.sh
index 7a700b2..f743f76 100755
--- a/.ci_support/run_docker_mingw.sh
+++ b/.ci_support/run_docker_mingw.sh
@@ -17,6 +17,6 @@ CXXFLAGS="-Wall -Wextra -D_GLIBCXX_ASSERTIONS" ${ARCH}-w64-mingw32-cmake \
 make install
 ${ARCH}-w64-mingw32-strip --strip-unneeded ${PREFIX}/bin/*.dll ${PREFIX}/Lib/site-packages/*/*.pyd
 echo lib/test ${PREFIX}/Lib/site-packages/* | xargs -n 1 cp ${PREFIX}/bin/*.dll
-ctest -R pyinstallcheck --output-on-failure --timeout 1000 --schedule-random ${MAKEFLAGS}
+OPENTURNS_NUM_THREADS=2 ctest -R pyinstallcheck --output-on-failure --timeout 1000 --schedule-random ${MAKEFLAGS}
 make tests
-ctest -R cppcheck --output-on-failure --timeout 1000 --schedule-random ${MAKEFLAGS}
+OPENTURNS_NUM_THREADS=2 ctest -R cppcheck --output-on-failure --timeout 1000 --schedule-random ${MAKEFLAGS}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index af2dcce..7237854 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,12 +49,14 @@ if (NOT DEFINED CMAKE_INSTALL_LIBDIR)
   set (CMAKE_INSTALL_LIBDIR lib${LIB_SUFFIX})
 endif ()
 
+include (GNUInstallDirs)
+
 set (OTFFTW_LIBRARY_PATH ${CMAKE_INSTALL_LIBDIR})
-set (OTFFTW_INCLUDE_PATH include)
+set (OTFFTW_INCLUDE_PATH ${CMAKE_INSTALL_INCLUDEDIR})
 set (OTFFTW_SWIG_INCLUDE_DIRS ${OTFFTW_INCLUDE_PATH}/${PACKAGE_NAME}/swig)
-set (OTFFTW_DATA_PATH share)
+set (OTFFTW_DATA_PATH ${CMAKE_INSTALL_DATAROOTDIR})
 set (OTFFTW_CONFIG_CMAKE_PATH ${CMAKE_INSTALL_LIBDIR}/cmake/otfftw)
-set (OTFFTW_DOC_PATH share/${PACKAGE_NAME}/doc)
+set (OTFFTW_DOC_PATH ${CMAKE_INSTALL_DOCDIR})
 
 set (CMAKE_CXX_STANDARD 11)
 
diff --git a/python/src/FFTW.i b/python/src/FFTW.i
index cb5c5e4..210e6f4 100644
--- a/python/src/FFTW.i
+++ b/python/src/FFTW.i
@@ -4,5 +4,6 @@
 #include "otfftw/FFTW.hxx"
 %}
 
+%copyctor OTFFTW::FFTW;
+
 %include otfftw/FFTW.hxx
-namespace OTFFTW { %extend FFTW { FFTW(const FFTW & other) { return new OTFFTW::FFTW(other); } } }