sbcl-librarian
Opinionated interface for creating shared libraries. Requires SBCL version >2.1.10.
You can build the example library using the Makefile in the example directory, which produces a header file, a source file, and a core file, and then you can compile the artifacts like so with:
gcc -c -fpic libcalc.c
gcc -shared libcalc.o -o libcalc.so -lsbcl
gcc example.c -o example -lsbcl -lcalc -L.
which creates a shared library and executable using the functions
defined in the example system, assuming you have libsbcl.so and
libcalc.so in a shared library path somewhere.
If you don't have libsbcl.so, you can build it by cloning the sbcl
sources and running make-shared-library.sh. Then the artifact will
be in src/runtime/.
NOTE: On Intel Mac OS X you MUST specify -pagezero_size 0x100000
when linking the final executable, otherwise SBCL will fail to mmap
its static space into the address 0x5000000. This is because Mac
decides to make page zero take up a whole 4GB (!), which prevents
access to the 32-bit address space. (Ostensibly to prevent null
pointer or other such bad (truncated?) pointer dereferences.)