HLib is distributed for free under the GNU
You need a more or less POSIX-conformant operating system.
For obvious reason, I only provide the source code (and no binaries).
Building hlib should be fairly easy: just follow the standard GNU sequence (configure and make); there is also a BUILD file with more information included in the source distribution.
mkdir build_dir ; cd build_dir ../source_dir/configure make
Especially note that you can pass additional comiler flags using the
ADDFLAGS variable (without the need to re-configure the
make ADDFLAGS="-DAllocDebugging=1 -DUSE_GNU_MEMCHECK=0 -fno-omit-frame-pointer -g"