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made it possible to try several versions, use it in readline and openssl

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svn: r6138
This commit is contained in:
Eli Barzilay 2007-05-04 06:08:48 +00:00
parent 943967a4ce
commit 26ab4af5f7
3 changed files with 79 additions and 70 deletions
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52
collects/mzlib/foreign.ss
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@ -2,8 +2,7 @@
(module foreign mzscheme
(require #%foreign
(lib "dirs.ss" "setup"))
(require #%foreign (lib "dirs.ss" "setup"))
(require-for-syntax (lib "stx.ss" "syntax"))
;; This module is full of unsafe bindings that are not provided to requiring
@ -141,44 +140,53 @@
(define get-ffi-lib
(case-lambda
[(name) (get-ffi-lib name "")]
[(name version)
[(name version/s)
(cond
[(not name) (ffi-lib name)] ; #f => NULL => open this executable
[(not (or (string? name) (path? name)))
(raise-type-error 'ffi-lib "library-name" name)]
[else
;; A possible way that this might be misleading: say that there is a
;; "foo.so" file in the current directory, which refers to some undefined
;; symbol, trying to use this function with "foo.so" will try a dlopen
;; with "foo.so" which isn't found, then it tries a dlopen with
;; "foo.so" file in the current directory, which refers to some
;; undefined symbol, trying to use this function with "foo.so" will try
;; a dlopen with "foo.so" which isn't found, then it tries a dlopen with
;; "/<curpath>/foo.so" which fails because of the undefined symbol, and
;; since all fails, it will use (ffi-lib "foo.so") to raise the original
;; file-not-found error. This is because the dlopen doesn't provide a
;; way to distinguish different errors (only dlerror, but that's
;; unreliable).
(let* ([version (if (zero? (string-length version))
"" (string-append "." version))]
(let* ([versions (if (list? version/s) version/s (list version/s))]
[versions (map (lambda (v)
(if (or (not v) (zero? (string-length v)))
"" (string-append "." v)))
versions)]
[fullpath (lambda (p) (path->complete-path (expand-path p)))]
[absolute? (absolute-path? name)]
[name0 (path->string (expand-path name))] ; orig name
[name (if (regexp-match lib-suffix-re name0) ; name + suffix
(string-append name0 version)
(string-append name0 "." lib-suffix version))])
(or (and (not absolute?)
[names (map (if (regexp-match lib-suffix-re name0) ; name+suffix
(lambda (v) (string-append name0 v))
(lambda (v) (string-append name0 "." lib-suffix v)))
versions)]
[ffi-lib* (lambda (name) (ffi-lib name #t))])
(or ;; try to look in our library paths first
(and (not absolute?)
(ormap (lambda (dir)
;; try good name first, then original
(or (ffi-lib (build-path dir name) #t)
(ffi-lib (build-path dir name0) #t)))
;; try good names first, then original
(or (ormap (lambda (name)
(ffi-lib* (build-path dir name)))
names)
(ffi-lib* (build-path dir name0))))
(get-lib-search-dirs)))
;; Try without DLL path:
(ffi-lib name #t) ; try good name first
(ffi-lib name0 #t) ; try original
(and (file-exists? name) ; try a relative path
(ffi-lib (fullpath name) #t))
;; try a system search
(ormap ffi-lib* names) ; try good names first
(ffi-lib* name0) ; try original
(ormap (lambda (name) ; try relative paths
(and (file-exists? name) (ffi-lib* (fullpath name))))
names)
(and (file-exists? name0) ; relative with original
(ffi-lib (fullpath name0) #t))
(ffi-lib* (fullpath name0)))
;; give up: call ffi-lib so it will raise an error
(ffi-lib name)))])]))
(ffi-lib (car names))))])]))
(define (get-ffi-lib-internal x)
(if (ffi-lib? x) x (get-ffi-lib x)))

7
collects/openssl/mzssl.ss
View File

@ -68,14 +68,15 @@
(with-handlers ([exn:fail? (lambda (x)
(set! ssl-load-fail-reason (exn-message x))
#f)])
(ffi-lib libcrypto-so)))
(ffi-lib libcrypto-so '("" "0.9.8b" "0.9.8" "0.9.7"))))
(define libssl
(and libcrypto
(with-handlers ([exn:fail? (lambda (x)
(with-handlers ([exn:fail?
(lambda (x)
(set! ssl-load-fail-reason (exn-message x))
#f)])
(ffi-lib libssl-so))))
(ffi-lib libssl-so '("" "0.9.8b" "0.9.8" "0.9.7")))))
(define libmz (ffi-lib #f))

2
collects/readline/mzrl.ss
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@ -7,7 +7,7 @@
;; libtermcap needed on some platforms
(define libtermcap (with-handlers ([exn:fail? void]) (ffi-lib "libtermcap")))
(define libreadline (ffi-lib "libreadline"))
(define libreadline (ffi-lib "libreadline" '("" "5" "4")))
(define make-byte-string ; helper for the two types below
(get-ffi-obj "scheme_make_byte_string" #f (_fun _pointer -> _scheme)))