Using compiler directive to warn if a file is missing - ios

Question

I have a file that is included on the bundle that has the following name:
databaseX.sqlite
where X is the app's version. If the version is 2.8, the file should be named database2.8.sqlite. I have to be sure to include this file when the app is submitted to Apple.
Is it possible to create a compiler directive to check if the file is in the bundle?
I have tried this, without success
#define fileInBundle [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:[NSString stringWithFormat:#"LoteriaMac%#.sqlite", [[NSBundle mainBundle] objectForInfoDictionaryKey: #"CFBundleShortVersionString"]]]
#if defined(fileInBundle)
#pragma message("file in bundle")
#else
#pragma message("file missing")
#endif
file in bundle is always shown even if the file is not in bundle.

Answer 1

This is not possible. You are trying to use a runtime check inside a compilation directive.
In general, when compiling you cannot know whether there is a file in a bundle or not because the files are usually added to the bundle independently on code, after compiling.
This is the same as checking whether there is a file present in the filesystem on another computer when compiling.
To check that during build time, you can create a custom build script (Build Phases => + button) in your target, something similar to:
APP_PATH="${TARGET_BUILD_DIR}/${WRAPPER_NAME}"
// there is probably some easier way to get the version than from the Info.plist
INFO_FILE="${APP_PATH}/Info.plist"
VERSION=`/usr/libexec/plistbuddy -c Print:CFBundleShortVersionString "${INFO_FILE}"`
// the file we want to exist
DB_FILE="${APP_PATH}/database${VERSION}.sqlite"
// if the file does not exist
if [ ! -f "${DB_FILE}" ]; then
// emit an error
echo "error: File \"${DB_FILE}\" not found!" >&2;
// and stop the build
exit 1
fi