sage.misc.cython: Add NTL aliases, cache result of cython_aliases

src/sage/env.py

@@ -476,8 +476,8 @@ def uname_specific(name, value, alternative):
 
     # NTL
     aliases["NTL_CFLAGS"] = []
-    aliases["NTL_INCDIR"] = os.path.join(NTL_PREFIX, 'include')
-    aliases["NTL_LIBDIR"] = os.path.join(NTL_PREFIX, 'lib')
+    aliases["NTL_INCDIR"] = [os.path.join(NTL_PREFIX, 'include')] if NTL_PREFIX else []
+    aliases["NTL_LIBDIR"] = [os.path.join(NTL_PREFIX, 'lib')] if NTL_PREFIX else []
     aliases["NTL_LIBRARIES"] = ['ntl']
     aliases["NTL_LIBEXTRA"] = []
 

src/sage/misc/cython.py

@@ -34,28 +34,28 @@
 from sage.misc.cachefunc import cached_function
 
 @cached_function
-def _standard_libs_libdirs():
+def _standard_libs_libdirs_incdirs_aliases():
     r"""
     Return the list of libraries and library directories.
 
     EXAMPLES::
 
-        sage: from sage.misc.cython import _standard_libs_libdirs
-        sage: _standard_libs_libdirs()
+        sage: from sage.misc.cython import _standard_libs_libdirs_incdirs_aliases
+        sage: _standard_libs_libdirs_incdirs_aliases()
         (['mpfr', 'gmp', 'gmpxx', 'pari', ...],
-         [...])
+         [...],
+         [...],
+         {...})
     """
-    cblas_pc = pkgconfig.parse(get_cblas_pc_module_name())
-    cblas_libs = list(cblas_pc['libraries'])
-    cblas_library_dirs = list(cblas_pc['library_dirs'])
-    cblas_include_dirs = list(cblas_pc['include_dirs'])
+    aliases = cython_aliases()
     standard_libs = [
         'mpfr', 'gmp', 'gmpxx', 'pari', 'm',
         'ec', 'gsl',
-    ] + cblas_libs + [
+    ] + aliases["CBLAS_LIBRARIES"] + [
         'ntl']
-    standard_libdirs = [os.path.join(SAGE_LOCAL, "lib")] + cblas_library_dirs
-    return standard_libs, standard_libdirs
+    standard_libdirs = [os.path.join(SAGE_LOCAL, "lib")] + aliases["CBLAS_LIBDIR"] + aliases["NTL_LIBDIR"]
+    standard_incdirs = sage_include_directories() + aliases["CBLAS_INCDIR"] + aliases["NTL_INCDIR"]
+    return standard_libs, standard_libdirs, standard_incdirs, aliases
 
 ################################################################
 # If the user attaches a .spyx file and changes it, we have
@@ -277,7 +277,8 @@ def cython(filename, verbose=0, compile_message=False,
 
     # Add current working directory to includes. This is needed because
     # we cythonize from a different directory. See Trac #24764.
-    includes = [os.getcwd()] + sage_include_directories()
+    standard_libs, standard_libdirs, standard_includes, aliases = _standard_libs_libdirs_incdirs_aliases()
+    includes = [os.getcwd()] + standard_includes
 
     # Now do the actual build, directly calling Cython and distutils
     from Cython.Build import cythonize
@@ -321,7 +322,6 @@ def cython(filename, verbose=0, compile_message=False,
                 '-Wl,--image-base=0x{:x}'.format(image_base)
         ])
 
-    standard_libs, standard_libdirs = _standard_libs_libdirs()
     ext = Extension(name,
                     sources=[pyxfile],
                     extra_compile_args=extra_compile_args,
@@ -337,7 +337,7 @@ def cython(filename, verbose=0, compile_message=False,
         with restore_cwd(target_dir):
             try:
                 ext, = cythonize([ext],
-                                 aliases=cython_aliases(),
+                                 aliases=aliases,
                                  include_path=includes,
                                  compiler_directives=directives,
                                  quiet=(verbose <= 0),