diff --git a/giscanner/scannermain.py b/giscanner/scannermain.py
index 89ec193..8ee92c3 100755
--- a/giscanner/scannermain.py
+++ b/giscanner/scannermain.py
@@ -94,6 +94,34 @@ def get_windows_option_group(parser):
return group
+def _get_default_fallback_libpath():
+ outputs = os.environ.get("outputs", "out").split()
+ if "lib" in outputs:
+ # For multiple output derivations let's try whether there is a $lib
+ # environment variable and use that as the base store path.
+ store_path = os.environ.get("lib")
+ elif "out" in outputs:
+ # Otherwise we have a single output derivation, so the libraries most
+ # certainly will end up in "$out/lib".
+ store_path = os.environ.get("out")
+
+ if store_path is not None:
+ # Even if we have a $lib as output, there still should be a $lib/lib
+ # directory.
+ return os.path.join(store_path, 'lib')
+ else:
+ # If we haven't found a possible scenario, let's return an empty string
+ # so that the shared library won't be prepended with a path.
+ #
+ # Note that this doesn't mean that all hope is lost, because after all
+ # we can still use --fallback-library-path to set one.
+ #
+ # Also, we're not returning None, because that would make it very
+ # difficult to disable adding fallback paths altogether using something
+ # like: --fallback-library-path=""
+ return ""
+
+
def _get_option_parser():
parser = optparse.OptionParser('%prog [options] sources')
parser.add_option('', "--quiet",
@@ -200,6 +228,10 @@ match the namespace prefix.""")
parser.add_option("", "--filelist",
action="store", dest="filelist", default=[],
help="file containing headers and sources to be scanned")
+ parser.add_option("", "--fallback-library-path",
+ action="store", dest="fallback_libpath",
+ default=_get_default_fallback_libpath(),
+ help="Path to prepend to unknown shared libraries")
group = get_preprocessor_option_group(parser)
parser.add_option_group(group)
diff --git a/giscanner/shlibs.py b/giscanner/shlibs.py
index 838d343..ca7fc0d 100644
--- a/giscanner/shlibs.py
+++ b/giscanner/shlibs.py
@@ -53,10 +53,24 @@ def _resolve_libtool(options, binary, libraries):
# Match absolute paths on OS X to conform to how libraries are usually
# referenced on OS X systems.
def _ldd_library_pattern(library_name):
+ nix_store_dir = re.escape('@nixStoreDir@'.rstrip('/'))
pattern = "(?<![A-Za-z0-9_-])(lib*%s[^A-Za-z0-9_-][^\s\(\)]*)"
- if platform.system() == 'Darwin':
- pattern = "([^\s]*lib*%s[^A-Za-z0-9_-][^\s\(\)]*)"
- return re.compile(pattern % re.escape(library_name))
+ pattern = r'''
+ (
+ (?:
+ # First match Nix store paths because they need to be absolute.
+ (?:%s(?:/[^/]*)+)
+ # Everything else not a store path remains relative, because we
+ # would end up with temporary paths that are only valid during
+ # build time in the resulting GIR file.
+ | (?<=/)
+ )
+ # And finally the library itself:
+ (?:lib%s[^A-Za-z0-9_-][^\s\(\)]*)
+ )
+ '''
+ return re.compile(pattern % (nix_store_dir, re.escape(library_name)),
+ re.VERBOSE)
# This is a what we do for non-la files. We assume that we are on an
@@ -115,7 +129,11 @@ def _resolve_non_libtool(options, binary, libraries):
m = pattern.search(line)
if m:
del patterns[library]
- shlibs.append(m.group(1))
+ match = m.group(1)
+ if not match.startswith('/') \
+ and len(options.fallback_libpath) > 0:
+ match = os.path.join(options.fallback_libpath, match)
+ shlibs.append(match)
break
if len(patterns) > 0:
diff --git a/giscanner/utils.py b/giscanner/utils.py
index 660081e..c9c767a 100644
--- a/giscanner/utils.py
+++ b/giscanner/utils.py
@@ -109,17 +109,11 @@ def extract_libtool_shlib(la_file):
if dlname is None:
return None
- # Darwin uses absolute paths where possible; since the libtool files never
- # contain absolute paths, use the libdir field
- if platform.system() == 'Darwin':
- dlbasename = os.path.basename(dlname)
- libdir = _extract_libdir_field(la_file)
- if libdir is None:
- return dlbasename
- return libdir + '/' + dlbasename
- # From the comments in extract_libtool(), older libtools had
- # a path rather than the raw dlname
- return os.path.basename(dlname)
+ dlbasename = os.path.basename(dlname)
+ libdir = _extract_libdir_field(la_file)
+ if libdir is None:
+ return dlbasename
+ return libdir + '/' + dlbasename
def extract_libtool(la_file):