Using "buildFlag" for "OTHER_LDFLAGS" does not work as expected

I created a custom plugin linked from local path to the cordova project. This plugin integrates a ".framework" which has some parts of the code with c++ references. (I don't know more than that because is an external library and code is not public).

After I have integrated the plugin in the cordova project and started to build, everything started to fail.

After some research & testing, using "Other Linking flags" for xCode build ("-ObjC -lc++ -lstdc++ -lresolv") fixes the issue.

Currently, I am building the iOS application with different build config files as the documentation recommends. What I added in the build.json file is:

"buildFlag": [
"OTHER_LDFLAGS=-ObjC -lc++ -lstdc++ -lresolv"
]

And in terminal I get ("hidden" text hides the private stuff):

 Reading build config file:
Building project: hidden/platforms/ios/hidden.xcworkspace
Configuration: Release
Platform: device
Adding xcodebuildArg: OTHER_LDFLAGS=-ObjC -lc++ -lstdc++ -lresolv
User defaults from command line:
IDEArchivePathOverride = hidden/platforms/ios/hidden.xcarchive

Build settings from command line:
CONFIGURATION_BUILD_DIR = hidden/platforms/ios/build/device
OTHER_LDFLAGS = -ObjC -lc++ -lstdc++ -lresolv
SHARED_PRECOMPS_DIR = hidden/platforms/ios/build/sharedpch

Build settings from configuration file 'hidden/platforms/ios/cordova/build-release.xcconfig':
CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES = YES
CODE_SIGN_ENTITLEMENTS = $(PROJECT_DIR)/$(PROJECT_NAME)/Entitlements-$(CONFIGURATION).plist
CODE_SIGN_IDENTITY = hidden
DEVELOPMENT_TEAM = hidden
ENABLE_BITCODE = NO
HEADER_SEARCH_PATHS = "$(TARGET_BUILD_DIR)/usr/local/lib/include" "$(OBJROOT)/UninstalledProducts/include" "$(OBJROOT)/UninstalledProducts/$(PLATFORM_NAME)/include" "$(BUILT_PRODUCTS_DIR)"
OTHER_LDFLAGS = -ObjC
PROVISIONING_PROFILE = hidden
SWIFT_OBJC_BRIDGING_HEADER = $(PROJECT_DIR)/$(PROJECT_NAME)/Bridging-Header.h

The "OTHER_LDFLAGS" does not work & the build fails with errors related to missing different usages from c++.

As a fix, I installed the Cordova Custom Config plugin and I used the following preference for iOS:

<preference buildType="debug" name="ios-XCBuildConfiguration-OTHER_LDFLAGS" value="-ObjC -lc++ -lstdc++ -lresolv" xcconfigEnforce="true" />

Using the OTHER_LDFLAGS should work since there is support for that. Or am I wrong?