The new non-libltdl foreign library loading algorithm from 3.0.6
fails to cover common cases regarding how libtool names and installs
DLL files. Notably, it fails to recognize when libtool has added the
major version number into the filename itself, such as libfoo-1.dll
Also, it does not search in binary directories and the PATH for DLL
files, where libtool is likely to install DLLs.
This adds the option to search for dlls with major version numbers
in the filename, and modifies the search strategy for DLL-using
OSs to check bindir and PATH.
For MSYS, libraries are installed with the 'msys-' prefix. So this
modifies load-foreign-library to handle that prefix as well.
It changes the #:rename-on-cygwin? option to #:host-type-rename? to
better reflect that is works on both Cygwin and MSYS.
Partially based on a patch by Hannes Müller.
* NEWS: updated
* doc/ref/api-foreign.texi: document updates to load-foreign-library
and system-dll-path
* module/system/foreign-library.scm (is-integer-string?): new utility function
(dll-name-match?): new utility function
(find-best-dll-from-matches): new utility function
(dll-exists-with-version): new function that implements new dll search logic
(file-exists-with-extension): add flag argument to allow new dll search
(file-exists-in-path-with-extension): add flag argument to all new dll search
(system-dll-path): new parameter
(lib->msys): new helper function
(load-foreign-library): add new optarg flag #:allow-dll-version-suffix?
Pass new flag to library search functions.
Implement new search strategy for #:search-system-paths? on DLL systems'
replace #:rename-on-cygwin? with #:host-type-rename?
Use that option to rename both MSYS and Cygwin libraries.
(guile-system-extensions-path): prefer bindir to libdir on DLL systems
* test-suite/tests/foreign.test ("dll-name-match?"): new test category
("find-best-dll-from-matches"): new test category
("lib->msys"): new unit tests
When using automake and libtool to build DLLs on Cygwin, libtool
will rename libXXX to cygXXX. 'load-foreign-library' should
emulate libltdl behavior and search for DLLs using that convention.
* module/system/foreign-library.scm (lib->cyg): new helper function
(load-foreign-library): add rename-on-cygwin? option to rename
libraries using Cygwin semantics
* test-suite/tests/foreign.test: new test section 'lib->cyg'
* doc/ref/api-foreign.text: document new rename-on-cygwin? option
for load-foreign-library
* NEWS: Update.
* am/bootstrap.am (SOURCES):
* module/Makefile.am (SOURCES): Add system/foreign-library.scm.
* configure.ac: Replace ltdl check with -ldl check.
* libguile/dynl.c: Rewrite to just expose core dlopen / dlsym / etc to a
helper Scheme module.
(scm_dynamic_link, scm_dynamic_pointer, scm_dynamic_function)
(scm_dynamic_object_p, scm_dynamic_call): Rewrite in terms of (system
foreign-library).
* libguile/extensions.c (load_extension): Avoid scm_dynamic_call.
* module/system/foreign-library.scm: New file.
* module/oop/goops.scm (<dynamic-object>): Hackily export
<foreign-library> instead of a class here.
* doc/ref/api-foreign.texi (Foreign Function Interface): Rewrite to only
document the new interfaces. Eventually we will deprecate
dynamic-link and friends.
* doc/ref/guile.texi (API Reference): Move Foreign Objects after Foreign
Function Interface. Seems there should be some closer relationship
but this will do for now.
* doc/ref/tour.texi (Putting Extensions into Modules):
* doc/ref/libguile-parallel.texi (Parallel Installations): Update for
rename of Modules and Extensions to Foreign Extensions.
* libguile/deprecated.h:
* libguile/deprecated.c (scm_dynamic_unlink): Deprecate.
* libguile/guile.c: Remove ltdl include.
* test-suite/tests/foreign.test: Update tests to use new API, and update
error expectations.
