#!/bin/sh

src="$1"
shift

filename="${src##*/}"
filename="${filename%.*}"
runcache="$HOME/.cache/C"
CC=cc

# need to compile? (use not -ot to circumvent inexisting file the first time)
if [ ! "$src" -ot "$runcache/$filename" ]; then
    mkdir -p "$runcache"
    # get rid of shebang line in C program and compile it
    tail -n +2 "$src" > "$runcache/$filename.c"
    if [ -r /usr/bin/clang ]; then
        CC=clang
    fi
    "$CC" -Wall -std=c99 $CC_OPTS -o "$runcache/$filename" "$runcache/$filename.c"
fi

exec "$runcache/$filename" "$@"