macOS BigSur upgrade

CMakeLists.txt

@@ -38,7 +38,7 @@ find_package(MongoDB REQUIRED)
 find_package(OpenSSL REQUIRED)
 
 if (SYSTEM_MACOSX)
-    set(CMAKE_OSX_DEPLOYMENT_TARGET 10.13)
+    set(CMAKE_OSX_DEPLOYMENT_TARGET 10.14)
     find_package(Qt5MacExtras REQUIRED)
 endif()
 

bin/common/setup

@@ -27,23 +27,4 @@ PACK_PREFIX=$BUILD_DIR/package
 
 PREFIX_PATH=$ROBOMONGO_CMAKE_PREFIX_PATH
 
-mkdir -p $BUILD_DIR
-
-if [ "$(uname -s)" == "Darwin" ]; then
-    # On Mac OS we specify minimal OS version that we support.
-    #
-    # The following environment variable will set "-mmacosx-version-min=10.6" option
-    # for compiler. From documentation to GCC or Clang:
-    #
-    #    -mmacosx-version-min=version
-    #
-    #     The earliest version of MacOS X that this executable will run on is
-    #     version.  Typical values of version include 10.1, 10.2, and 10.3.9.
-    #
-    #     This value can also be set with the MACOSX_DEPLOYMENT_TARGET environment
-    #     variable.  If both the command-line option is specified and the
-    #     environment variable is set, the command-line option will take precedence.
-    #
-    export MACOSX_DEPLOYMENT_TARGET=10.13
-fi
-
+mkdir -p $BUILD_DIR