Hi guilers, I've got this crazy idea a few days ago, about the FFI interface. When a program written in C is compiled with some shared libraries, these libraries are referred to in special [insert ELF terminology here] of the binary. I wonder if it would be reasonable and feasible to do something similar for compiles guile modules?
C example: $ readelf -d `which guile`
Tag Type Name/Value 0x0000000000000001 (NEEDED) Shared library: [libguile-3.0.so.1] 0x0000000000000001 (NEEDED) Shared library: [libgc.so.1] 0x0000000000000001 (NEEDED) Shared library: [libpthread.so.0] 0x0000000000000001 (NEEDED) Shared library: [libffi.so.7] [snip] 0x000000000000001d (RUNPATH) Library runpath: [[snip]] [snip]
Hypothetical Scheme example: $ readelf -d $HOME/.guix-profile/lib/guile/3.0/site-ccache/chickadee/audio/vorbis.go
Tag Type Name/Value 0x0000000000000001 (NEEDED) Shared library: [libvorbisfile.so.3] 0x000000000000001d (RUNPATH) Library runpath: [[snip]] 0x0000000037146003 (<unknown>: 37146003) 0x3000002 0x0000000037146002 (<unknown>: 37146002) 0xe8 0x0000000037146000 (<unknown>: 37146000) 0x20000 0x0000000037146001 (<unknown>: 37146001) 0xaaa0 0x000000000000000c (INIT) 0x6bd0 0x0000000037146004 (<unknown>: 37146004) 0x15530 0x0000000000000000 (NULL) 0x0
This would require fleshing out some details though, such as when to use RUNPATH and when not, cross-platform support, where to find the libraries, some things I probably forgot. WDYT? Maxime
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