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Gambit Scheme library to interface to Python
The command python3-config
may not return the valid linker flags if it is a symbolic
link to the python3.8-config
. In this case it requires the --embed
option which
adds the link options to the python system library.
This is what python3-config
output on my machine. The -lpython3.8
is missing
causing a loading error in Gambit.
$ python3-config --ldflags
-L/usr/lib -lcrypt -lpthread -ldl -lutil -lm -lm
$ python3-config --ldflags --embed
-L/usr/lib -lpython3.8 -lcrypt -lpthread -ldl -lutil -lm -lm
The error is:
*** ERROR IN ##load-module-or-file -- /home/frederic/.gambit_userlib/github.com/feeley/pyffi/@/pyffi@gambit409003@C/pyffi.o1: undefined symbol: _PyUnicode_Ready
(##get-module 'github.com/feeley/pyffi)
The issue is that the --embed
is considered an invalid argument by python3-config
when it is a symbolic link to older version of python.
$ python3-config --ldflags
-L/usr/lib64 -lpython3.6m -lpthread -ldl -lutil -lm -Xlinker -export-dynamic
$ python3-config --ldflags --embed
Usage: /usr/bin/python3.6m-config --prefix|--exec-prefix|--includes|--libs|--cflags|--ldflags|--extension-suffix|--help|--abiflags|--configdir
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