depot/third_party/nixpkgs/pkgs/development/python-modules/cairocffi/dlopen-paths.patch

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Patch dlopen() to allow direct paths to all required libs
This is an update of the patch submitted in
https://github.com/NixOS/nixpkgs/commit/b13e44e094989d3a902f8c73b22e8d3c0cc7acf4
by Alexander V. Nikolaev <avn@avnik.info>
---
cairocffi/__init__.py | 34 ++++++++++++++++------------------
1 file changed, 16 insertions(+), 18 deletions(-)
diff --git a/cairocffi/__init__.py b/cairocffi/__init__.py
index 307d58c..43c29e3 100644
--- a/cairocffi/__init__.py
+++ b/cairocffi/__init__.py
@@ -21,28 +21,26 @@ VERSION = __version__ = (Path(__file__).parent / 'VERSION').read_text().strip()
version = '1.17.2'
version_info = (1, 17, 2)
+# Use hardcoded soname, because ctypes.util use gcc/objdump which shouldn't be
+# required for runtime
+_LIBS = {
+ 'cairo': '@cairo@/lib/libcairo@ext@',
+ 'glib-2.0': '@glib@/lib/libglib-2.0@ext@',
+ 'gobject-2.0': '@glib@/lib/libgobject-2.0@ext@',
+ 'gdk_pixbuf-2.0': '@gdk_pixbuf@/lib/libgdk_pixbuf-2.0@ext@',
+}
+
def dlopen(ffi, library_names, filenames):
"""Try various names for the same library, for different platforms."""
- exceptions = []
-
for library_name in library_names:
- library_filename = find_library(library_name)
- if library_filename:
- filenames = (library_filename,) + filenames
- else:
- exceptions.append(
- 'no library called "{}" was found'.format(library_name))
-
- for filename in filenames:
- try:
- return ffi.dlopen(filename)
- except OSError as exception: # pragma: no cover
- exceptions.append(exception)
-
- error_message = '\n'.join( # pragma: no cover
- str(exception) for exception in exceptions)
- raise OSError(error_message) # pragma: no cover
+ path = _LIBS.get(library_name, None)
+ if path:
+ lib = ffi.dlopen(path)
+ if lib:
+ return lib
+
+ raise OSError("dlopen() failed to load a library: %s as %s" % (library_name, path))
cairo = dlopen(
--
2.19.2