Update CircleCI build config

Disable one GCC/Mingw warning flag that was enabled as part of a group and seems to be buggy.

Disable two GCC/Mingw warning flags which we are not yet ready to enable. These were not specified previously for OPHD, though are now being used in NAS2D.

Disable two Clang warning flags which we are not yet ready to enable. There were not specified previously for OPHD, though are now being used in NAS2D.

.circleci/config.yml

@@ -27,17 +27,13 @@ jobs:
       - checkout
       - run: git submodule update --init nas2d-core/
       - brew-install
-      - run:
-          name: Add Brew include path to system include paths
-          command: |
-            echo "export CPLUS_INCLUDE_PATH=${CPLUS_INCLUDE_PATH}:$(brew --prefix)/include" >> "${BASH_ENV}"
-            echo "export LDFLAGS_EXTRA=-L$(brew --prefix)/lib" >> "${BASH_ENV}"
       - build
   build-linux-gcc:
     docker:
       - image: ghcr.io/lairworks/build-env-nas2d-gcc:1.6
     environment:
-      WARN_EXTRA: -Wsuggest-override -Wno-dangling-reference
+      Toolchain: "gcc"
+      WARN_EXTRA: "-Wno-dangling-reference  -Wno-useless-cast -Wno-effc++"
     steps:
       - checkout
       - run: git submodule update --init nas2d-core/
@@ -46,7 +42,8 @@ jobs:
     docker:
       - image: ghcr.io/lairworks/build-env-nas2d-clang:1.5
     environment:
-      WARN_EXTRA: -Wunknown-pragmas -Wimplicit-int-conversion -Wunreachable-code -Wunreachable-code-return -Wunreachable-code-break -Wcovered-switch-default -Wshadow-field -Wextra-semi -Wextra-semi-stmt -Wnewline-eof -Wdocumentation -Wdocumentation-unknown-command -Wheader-hygiene -Winconsistent-missing-destructor-override -Wdeprecated-copy-dtor -Wformat-nonliteral
+      Toolchain: "clang"
+      WARN_EXTRA: "-Wno-weak-vtables -Wno-switch-default"
     steps:
       - checkout
       - run: git submodule update --init nas2d-core/
@@ -55,8 +52,8 @@ jobs:
     docker:
       - image: ghcr.io/lairworks/build-env-nas2d-mingw:1.13
     environment:
-      WARN_EXTRA: "-Wno-redundant-decls -Wno-dangling-reference"
-      LDFLAGS_EXTRA: "-L/usr/local/x86_64-w64-mingw32/lib"
+      Toolchain: "mingw"
+      WARN_EXTRA: "-Wno-dangling-reference  -Wno-useless-cast -Wno-effc++"
     steps:
       - checkout
       - run: git submodule update --init nas2d-core/