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Revision 3997, 0.9 KB
(checked in by hans, 2 years ago)
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Update CFFI and Alexandria for SBCL-1.0.20 compatibility.
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| 1 | |
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| 2 | CFFI, the Common Foreign Function Interface, purports to be a portable |
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| 3 | foreign function interface, similar in spirit to UFFI. |
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| 4 | |
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| 5 | Unlike UFFI, CFFI requires only a small set of low-level functionality |
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| 6 | from the Lisp implementation, such as calling a foreign function by |
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| 7 | name, allocating foreign memory, and dereferencing pointers. |
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| 8 | |
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| 9 | More complex tasks like accessing foreign structures can be done in |
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| 10 | portable "user space" code, making use of the low-level memory access |
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| 11 | operations defined by the implementation-specific bits. |
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| 12 | |
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| 13 | CFFI also aims to be more efficient than UFFI when possible. In |
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| 14 | particular, UFFI's use of aliens in CMUCL and SBCL can be tricky to |
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| 15 | get right. CFFI avoids this by using system area pointers directly |
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| 16 | instead of alien objects. All foreign function definitions and uses |
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| 17 | should compile without alien-value compiler notes in CMUCL/SBCL. |
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| 18 | |
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| 19 | Please consult the manual for further details, including installation |
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| 20 | instructions. |
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