convenience

# Bring in the functions from the 'functions' script in the same directory as
# this script. Beware: since this script is itself sourced, its name is NOT in
# $0, but rather in $BASH_SOURCE!
d="$(dirname "$BASH_SOURCE")"
source "$d/functions"

# Now the 'variables' script
source "$d/variables"

# Enumerate the known universe of buildtypes and suffixes.
# Alternatively we could trawl the output of 'set' for variables whose name
# matches a regexp, but this way feels more predictable.
T=(BASE RELEASE RELWITHDEBINFO DEBUG)
X=(_MACROS _SWITCHES "")

case "$OSTYPE" in
    cygwin)
        p="WINDOWS"
        ;;
    darwin*)
        p="DARWIN"
        ;;
    linux*)
        p="LINUX"
        ;;
    *)
        echo "Unrecognized platform $OSTYPE" 1>&2
        exit 2
        ;;
esac

# make aliases for all LL_BUILD_{platform}_{buildtype}{suffix}
# variables that eliminate the {platform} part:
# LL_BUILD_{buildtype}{suffix}
# e.g. LL_BUILD_RELEASE has Release switches for current platform
for t in "${T[@]}"
do for x in "${X[@]}"
   do eval LL_BUILD_$t$x=\$LL_BUILD_${p}_$t$x
   done
done

# further, if $1 is passed as a buildtype (Release, RelWithDebInfo, Debug),
# make aliases that eliminate the {buildtype} part: just
# LL_BUILD{suffix}
# e.g. if we assume 'source convenience Release', then
# LL_BUILD has Release switches for current platform
if [ -n "${1:-}" ]
then # uppercase the buildtype so that's not on our caller
     t="$(toupper "$1")"
     for x in "${X[@]}"
     do eval LL_BUILD$x=\$LL_BUILD_$t$x
     done
fi

# Since this script is designed to be sourced, explicitly delete temporary
# variables.
unset d p T X t x