On 4/23/19 23:14, Matthew Butterick wrote:
Some code relies on the `harfbuzz` library, like so:
(define-runtime-lib harfbuzz-lib
[(unix) (ffi-lib "libharfbuzz" '("1" ""))]
[(macosx) (ffi-lib "libharfbuzz.0.dylib")]
[(windows) (ffi-lib "libharfbuzz-0.dll")])
Though this works on my Mac machines, the doc server throws an error: [1]
raco setup: ffi-obj: couldn't get "hb_buffer_add_codepoints" from
"libharfbuzz.so" (/usr/lib/x86_64-linux-gnu/libharfbuzz.so: undefined symbol:
hb_buffer_add_codepoints)
The `hb_buffer_add_codepoints` function was added in Harfbuzz 0.9.31,
but according to Racket's readme, it ships with Harfbuzz 1.7.6 [2]
Judging by the Harfbuzz path in the error message, I wonder if I'm
inadvertently invoking some local copy of Harfbuzz (which is out of
date) rather than the one that ships with Racket (which isn't). But if
so, I don't know how to change the `define-runtime-lib` incantation to
make it work.
It looks like natipkg Racket includes libharfbuzz.so.0, not
libharfbuzz.so.1 (see [1]). So try changing the unix line to
[(unix) (ffi-lib "libharfbuzz" '("0" ""))]
instead.
Ryan
[1]
https://github.com/racket/libs/tree/master/draw-x86_64-linux-natipkg-3/racket/draw
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