CXX-2277 ignore deprecated declarations when building on release branches

Author: rcsanchez97

.mci.yml

@@ -26,10 +26,10 @@ 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"
-        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"
-        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"
-        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"
+        linux_cmake_flags: &linux_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers $ignore_deprecated" -DCMAKE_CXX_FLAGS="-Wall -Wextra -Wconversion -Wnarrowing -Wno-expansion-to-defined -pedantic -Werror -Wno-missing-field-initializers $ignore_deprecated"
+        macos_cmake_flags: &macos_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers $ignore_deprecated" -DCMAKE_CXX_FLAGS="-stdlib=libc++ -Wall -Wextra -Wconversion -Wnarrowing -pedantic -Werror $ignore_deprecated"
+        asan_cmake_flags: &asan_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers $ignore_deprecated" -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 $ignore_deprecated"
+        ubsan_cmake_flags: &ubsan_cmake_flags -DCMAKE_C_FLAGS="-Wall -Wextra -Wno-attributes -Werror -Wno-missing-field-initializers $ignore_deprecated" -DCMAKE_CXX_COMPILER="/usr/bin/clang++" -DCMAKE_CXX_FLAGS="-D_GLIBCXX_USE_CXX11_ABI=0 -fsanitize=undefined -fsanitize-blacklist=$(pwd)/etc/ubsan.blacklist -fno-sanitize-recover=undefined -O1 -g -fno-omit-frame-pointer -Wall -Wextra -Wconversion -Wnarrowing -pedantic -Werror $ignore_deprecated"
         msvc2015_cmake_flags: &msvc2015_cmake_flags -DBOOST_ROOT=c:/local/boost_1_60_0
         msvc2015_generator: &msvc2015_generator Visual Studio 14 2015 Win64
         # The VS option /Zc:__cplusplus is necessary to build with VS2017's
@@ -218,6 +218,11 @@ functions:
 
                   export GENERATOR="${generator}"
 
+                  if [ "$(echo ${branch_name} | cut -f2 -d'/')" != "${branch_name}" ]; then
+                      # ignore deprecation warnings when building on a release branch
+                      ignore_deprecated=-Wno-deprecated-declarations
+                  fi
+
                   .evergreen/compile.sh -DCMAKE_PREFIX_PATH="$MONGOC_PREFIX" ${cmake_flags} ${poly_flags} $ADDL_OPTS -DCMAKE_INSTALL_PREFIX=install
 
     "test":