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--- setup.py.orig 2011-09-25 22:04:15.000000000 +0000
+++ setup.py 2011-09-25 22:10:55.000000000 +0000
@@ -39,6 +39,10 @@
from distutils import core
from distutils.core import Extension, Command
from distutils.command.build_ext import build_ext
+from distutils.errors import CompileError, LinkError
+import distutils.ccompiler
+import distutils.sysconfig
+import tempfile
import os, sys
import struct
@@ -69,42 +73,33 @@
('Crypto.Hash', 'RIPEMD160'), # Included for your amusement, but the C version is much faster.
]
-# Functions for finding libraries and files, copied from Python's setup.py.
-
-def find_file(filename, std_dirs, paths):
- """Searches for the directory where a given file is located,
- and returns a possibly-empty list of additional directories, or None
- if the file couldn't be found at all.
-
- 'filename' is the name of a file, such as readline.h or libcrypto.a.
- 'std_dirs' is the list of standard system directories; if the
- file is found in one of them, no additional directives are needed.
- 'paths' is a list of additional locations to check; if the file is
- found in one of them, the resulting list will contain the directory.
- """
-
- # Check the standard locations
- for dir in std_dirs:
- f = os.path.join(dir, filename)
- if os.path.exists(f): return []
-
- # Check the additional directories
- for dir in paths:
- f = os.path.join(dir, filename)
- if os.path.exists(f):
- return [dir]
-
- # Not found anywhere
- return None
-
-def find_library_file(compiler, libname, std_dirs, paths):
- filename = compiler.library_filename(libname, lib_type='shared')
- result = find_file(filename, std_dirs, paths)
- if result is not None: return result
-
- filename = compiler.library_filename(libname, lib_type='static')
- result = find_file(filename, std_dirs, paths)
- return result
+def libgmp_exists():
+ fname = tempfile.mktemp(".c")
+ oname = tempfile.mktemp(".out")
+ f = open(fname, 'w')
+ f.write("""
+ #include <gmp.h>
+
+ int main(void)
+ {
+ mpz_init((void*)0);
+ return 0;
+ }
+ """)
+ f.close()
+
+ try:
+ compiler = distutils.ccompiler.new_compiler()
+ distutils.sysconfig.customize_compiler(compiler)
+ objects = compiler.compile([fname])
+ compiler.link_shared_object(objects, oname, libraries=('gmp',) )
+ except (CompileError, LinkError, TypeError):
+ os.remove(fname)
+ return False
+ os.remove(oname)
+ os.remove(objects[0])
+ os.remove(fname)
+ return True
def endianness_macro():
s = struct.pack("@I", 0x33221100)
@@ -157,8 +152,7 @@
self.compiler.include_dirs.insert(0, "src/inc-msvc/")
# Detect libgmp and don't build _fastmath if it is missing.
- lib_dirs = self.compiler.library_dirs + ['/lib', '/usr/lib']
- if not (self.compiler.find_library_file(lib_dirs, 'gmp')):
+ if not libgmp_exists():
print >>sys.stderr, "warning: GMP library not found; Not building Crypto.PublicKey._fastmath."
self.__remove_extensions(["Crypto.PublicKey._fastmath"])
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