fix find_library on Solaris (closes #5289)

Lib/ctypes/util.py

@@ -166,6 +166,35 @@ elif os.name == "posix":
             res.sort(key=_num_version)
             return res[-1]
 
+    elif sys.platform == "sunos5":
+
+        def _findLib_crle(name, is64):
+            if not os.path.exists('/usr/bin/crle'):
+                return None
+
+            if is64:
+                cmd = 'env LC_ALL=C /usr/bin/crle -64 2>/dev/null'
+            else:
+                cmd = 'env LC_ALL=C /usr/bin/crle 2>/dev/null'
+
+            for line in os.popen(cmd).readlines():
+                line = line.strip()
+                if line.startswith('Default Library Path (ELF):'):
+                    paths = line.split()[4]
+
+            if not paths:
+                return None
+
+            for dir in paths.split(":"):
+                libfile = os.path.join(dir, "lib%s.so" % name)
+                if os.path.exists(libfile):
+                    return libfile
+
+            return None
+
+        def find_library(name, is64 = False):
+            return _get_soname(_findLib_crle(name, is64) or _findLib_gcc(name))
+
     else:
 
         def _findSoname_ldconfig(name):

Misc/ACKS

@@ -1250,6 +1250,7 @@ Richard Walker
 Larry Wall
 Kevin Walzer
 Rodrigo Steinmuller Wanderley
+Ke Wang
 Greg Ward
 Zachary Ware
 Barry Warsaw

Misc/NEWS

@@ -163,6 +163,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #5289: Fix ctypes.util.find_library on Solaris.
+
 - Issue #17106: Fix a segmentation fault in io.TextIOWrapper when an underlying
   stream or a decoder produces data of an unexpected type (i.e. when
   io.TextIOWrapper initialized with text stream or use bytes-to-bytes codec).