Do not warn on unused variables

Author: kevinAlbs

.mci.yml

@@ -28,10 +28,10 @@ variables:
 
     ## cmake flag variables
     cmake_flags:
-        linux_cmake_flags: &linux_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers" -DCMAKE_CXX_FLAGS="-Wall -Wextra -Wconversion -Wnarrowing -Wno-expansion-to-defined -pedantic -Werror -Wno-missing-field-initializers -Wno-deprecated-declarations"
-        macos_cmake_flags: &macos_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers" -DCMAKE_CXX_FLAGS="-stdlib=libc++ -Wall -Wextra -Wconversion -Wnarrowing -pedantic -Werror -Wno-deprecated-declarations"
-        asan_cmake_flags: &asan_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers" -DCMAKE_CXX_COMPILER="/usr/bin/clang++" -DCMAKE_CXX_FLAGS="-D_GLIBCXX_USE_CXX11_ABI=0 -fsanitize=address -O1 -g -fno-omit-frame-pointer -Wall -Wextra -Wconversion -Wnarrowing -pedantic -Werror -Wno-deprecated-declarations"
-        ubsan_cmake_flags: &ubsan_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers" -DCMAKE_CXX_COMPILER="/usr/bin/clang++" -DCMAKE_CXX_FLAGS="-D_GLIBCXX_USE_CXX11_ABI=0 -fsanitize=undefined -fsanitize-blacklist=$(pwd)/etc/ubsan.blacklist -fno-sanitize-recover=undefined -O1 -g -fno-omit-frame-pointer -Wall -Wextra -Wconversion -Wnarrowing -pedantic -Werror -Wno-deprecated-declarations"
+        linux_cmake_flags: &linux_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers" -DCMAKE_CXX_FLAGS="-Wall -Wextra -Wconversion -Wnarrowing -Wno-expansion-to-defined -pedantic -Werror -Wno-missing-field-initializers -Wno-deprecated-declarations -Wno-unused-variable"
+        macos_cmake_flags: &macos_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers" -DCMAKE_CXX_FLAGS="-stdlib=libc++ -Wall -Wextra -Wconversion -Wnarrowing -pedantic -Werror -Wno-deprecated-declarations -Wno-unused-variable"
+        asan_cmake_flags: &asan_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers" -DCMAKE_CXX_COMPILER="/usr/bin/clang++" -DCMAKE_CXX_FLAGS="-D_GLIBCXX_USE_CXX11_ABI=0 -fsanitize=address -O1 -g -fno-omit-frame-pointer -Wall -Wextra -Wconversion -Wnarrowing -pedantic -Werror -Wno-deprecated-declarations -Wno-unused-variable"
+        ubsan_cmake_flags: &ubsan_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers" -DCMAKE_CXX_COMPILER="/usr/bin/clang++" -DCMAKE_CXX_FLAGS="-D_GLIBCXX_USE_CXX11_ABI=0 -fsanitize=undefined -fsanitize-blacklist=$(pwd)/etc/ubsan.blacklist -fno-sanitize-recover=undefined -O1 -g -fno-omit-frame-pointer -Wall -Wextra -Wconversion -Wnarrowing -pedantic -Werror -Wno-deprecated-declarations -Wno-unused-variable"
         windows_cmake_flags: &windows_cmake_flags -G "Visual Studio 14 2015 Win64" -DBOOST_ROOT=c:/local/boost_1_60_0
 
     example_projects_cc: