diff options
Diffstat (limited to 'gnu/packages/ld-wrapper.in')
| -rw-r--r-- | gnu/packages/ld-wrapper.in | 89 |
1 files changed, 50 insertions, 39 deletions
diff --git a/gnu/packages/ld-wrapper.in b/gnu/packages/ld-wrapper.in index 094018de3d..db662e7d76 100644 --- a/gnu/packages/ld-wrapper.in +++ b/gnu/packages/ld-wrapper.in @@ -92,34 +92,32 @@ exec @GUILE@ -c "(load-compiled \"@SELF@.go\") (apply $main (cdr (command-line)) (let loop ((file file) (depth 0)) - (catch 'system-error - (lambda () - (if (>= depth %max-symlink-depth) - file - (loop (readlink file) (+ depth 1)))) - (lambda args - (if (= EINVAL (system-error-errno args)) - file - (apply throw args)))))) - -(define (dereference-symlinks file) - ;; Same as 'readlink*' but return FILE if the symlink target is invalid or - ;; FILE does not exist. - (catch 'system-error - (lambda () - ;; When used from a user environment, FILE may refer to - ;; ~/.guix-profile/lib/libfoo.so, which is itself a symlink to the - ;; store. Check whether this is the case. - (readlink* file)) - (lambda args - (if (= ENOENT (system-error-errno args)) - file - (apply throw args))))) + (define (absolute target) + (if (absolute-file-name? target) + target + (string-append (dirname file) "/" target))) + + (if (>= depth %max-symlink-depth) + file + (call-with-values + (lambda () + (catch 'system-error + (lambda () + (values #t (readlink file))) + (lambda args + (let ((errno (system-error-errno args))) + (if (or (= errno EINVAL) (= errno ENOENT)) + (values #f file) + (apply throw args)))))) + (lambda (success? target) + (if success? + (loop (absolute target) (+ depth 1)) + file)))))) (define (pure-file-name? file) ;; Return #t when FILE is the name of a file either within the store ;; (possibly via a symlink) or within the build directory. - (let ((file (dereference-symlinks file))) + (let ((file (readlink* file))) (or (not (string-prefix? "/" file)) (string-prefix? %store-directory file) (string-prefix? %temporary-directory file) @@ -128,7 +126,7 @@ exec @GUILE@ -c "(load-compiled \"@SELF@.go\") (apply $main (cdr (command-line)) (define (store-file-name? file) ;; Return #t when FILE is a store file, possibly indirectly. - (string-prefix? %store-directory (dereference-symlinks file))) + (string-prefix? %store-directory (readlink* file))) (define (shared-library? file) ;; Return #t when FILE denotes a shared library. @@ -142,34 +140,45 @@ exec @GUILE@ -c "(load-compiled \"@SELF@.go\") (apply $main (cdr (command-line)) (define (library-files-linked args) ;; Return the file names of shared libraries explicitly linked against via ;; `-l' or with an absolute file name in ARGS. - (define path+files + (define path+files+args (fold (lambda (argument result) (match result - ((library-path . library-files) + ((library-path library-files ("-dynamic-linker" . rest)) + ;; When passed '-dynamic-linker ld.so', ignore 'ld.so'. + ;; See <http://bugs.gnu.org/20102>. + (list library-path + library-files + (cons* argument "-dynamic-linker" rest))) + ((library-path library-files previous-args) (cond ((string-prefix? "-L" argument) ;augment the search path - (cons (append library-path + (list (append library-path (list (string-drop argument 2))) - library-files)) + library-files + (cons argument previous-args))) ((string-prefix? "-l" argument) ;add library (let* ((lib (string-append "lib" (string-drop argument 2) ".so")) (full (search-path library-path lib))) - (if full - (cons library-path - (cons full library-files)) - result))) + (list library-path + (if full + (cons full library-files) + library-files) + (cons argument previous-args)))) ((and (string-prefix? %store-directory argument) (shared-library? argument)) ;add library - (cons library-path - (cons argument library-files))) + (list library-path + (cons argument library-files) + (cons argument previous-args))) (else - result))))) - (cons '() '()) + (list library-path + library-files + (cons argument previous-args))))))) + (list '() '() '()) args)) - (match path+files - ((path . files) + (match path+files+args + ((path files arguments) (reverse files)))) (define (rpath-arguments library-files) @@ -202,6 +211,8 @@ impure library ~s~%" (args (append args (rpath-arguments libs)))) (when %debug? (format (current-error-port) + "ld-wrapper: libraries linked: ~s~%" libs) + (format (current-error-port) "ld-wrapper: invoking `~a' with ~s~%" %real-ld args)) (apply execl %real-ld (basename %real-ld) args))) |