src=$1.c
redo-ifchange $src conf/zstd.cflags.rc conf/zstd.libs.rc
read ZSTD_CFLAGS < conf/zstd.cflags.rc
read ZSTD_LIBS < conf/zstd.libs.rc
${CC:-cc} $CFLAGS $ZSTD_CFLAGS -o $3 $src $ZSTD_LIBS