"""distutils.emxccompiler
Provides the EMXCCompiler class, a subclass of UnixCCompiler that
handles the EMX port of the GNU C compiler to OS/2.
# * OS/2 insists that DLLs can have names no longer than 8 characters
# We put export_symbols in a def-file, as though the DLL can have
# an arbitrary length name, but truncate the output filename.
# * only use OMF objects and use LINK386 as the linker (-Zomf)
# * always build for multithreading (-Zmt) as the accompanying OS/2 port
# of Python is only distributed with threads enabled.
# * EMX gcc 2.81/EMX 0.9d fix03
__revision__
= "$Id: emxccompiler.py,v 1.11 2003/12/02 12:17:59 aimacintyre Exp $"
from distutils
.ccompiler
import gen_preprocess_options
, gen_lib_options
from distutils
.unixccompiler
import UnixCCompiler
from distutils
.file_util
import write_file
from distutils
.errors
import DistutilsExecError
, CompileError
, UnknownFileError
from distutils
import log
class EMXCCompiler (UnixCCompiler
):
static_lib_extension
= ".lib"
shared_lib_extension
= ".dll"
static_lib_format
= "%s%s"
shared_lib_format
= "%s%s"
res_extension
= ".res" # compiled resource file
UnixCCompiler
.__init
__ (self
, verbose
, dry_run
, force
)
(status
, details
) = check_config_h()
self
.debug_print("Python's GCC status: %s (details: %s)" %
if status
is not CONFIG_H_OK
:
"Python's pyconfig.h doesn't seem to support your compiler. " +
("Reason: %s." % details
) +
"Compiling may fail because of undefined preprocessor macros.")
(self
.gcc_version
, self
.ld_version
) = \
self
.debug_print(self
.compiler_type
+ ": gcc %s, ld %s\n" %
# Hard-code GCC because that's what this is all about.
# XXX optimization, warnings etc. should be customizable.
self
.set_executables(compiler
='gcc -Zomf -Zmt -O3 -fomit-frame-pointer -mprobe -Wall',
compiler_so
='gcc -Zomf -Zmt -O3 -fomit-frame-pointer -mprobe -Wall',
linker_exe
='gcc -Zomf -Zmt -Zcrtdll',
linker_so
='gcc -Zomf -Zmt -Zcrtdll -Zdll')
# want the gcc library statically linked (so that we don't have
# to distribute a version dependent on the compiler we have)
self
.dll_libraries
=["gcc"]
def _compile(self
, obj
, src
, ext
, cc_args
, extra_postargs
, pp_opts
):
# gcc requires '.rc' compiled to binary ('.res') files !!!
self
.spawn(["rc", "-r", src
])
except DistutilsExecError
, msg
:
else: # for other files use the C-compiler
self
.spawn(self
.compiler_so
+ cc_args
+ [src
, '-o', obj
] +
except DistutilsExecError
, msg
:
runtime_library_dirs
=None,
# use separate copies, so we can modify the lists
extra_preargs
= copy
.copy(extra_preargs
or [])
libraries
= copy
.copy(libraries
or [])
objects
= copy
.copy(objects
or [])
libraries
.extend(self
.dll_libraries
)
# handle export symbols by creating a def-file
# with executables this only works with gcc/ld as linker
if ((export_symbols
is not None) and
(target_desc
!= self
.EXECUTABLE
)):
# (The linker doesn't do anything if output is up-to-date.
# So it would probably better to check if we really need this,
# but for this we had to insert some unchanged parts of
# UnixCCompiler, and this is not what we want.)
# we want to put some files in the same directory as the
# object files are, build_temp doesn't help much
# where are the object files
temp_dir
= os
.path
.dirname(objects
[0])
# name of dll to give the helper files the same base name
(dll_name
, dll_extension
) = os
.path
.splitext(
os
.path
.basename(output_filename
))
# generate the filenames for these files
def_file
= os
.path
.join(temp_dir
, dll_name
+ ".def")
"LIBRARY %s INITINSTANCE TERMINSTANCE" % \
os
.path
.splitext(os
.path
.basename(output_filename
))[0],
"DATA MULTIPLE NONSHARED",
for sym
in export_symbols
:
contents
.append(' "%s"' % sym
)
self
.execute(write_file
, (def_file
, contents
),
# next add options for def-file and to creating import libraries
# for gcc/ld the def-file is specified as any other object files
#end: if ((export_symbols is not None) and
# (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
# who wants symbols and a many times larger output file
# should explicitly switch the debug mode on
# otherwise we let dllwrap/ld strip the output file
# (On my machine: 10KB < stripped_file < ??100KB
# unstripped_file = stripped_file + XXX KB
# ( XXX=254 for a typical python extension))
extra_preargs
.append("-s")
None, # export_symbols, we do this in our def-file
# -- Miscellaneous methods -----------------------------------------
# override the object_filenames method from CCompiler to
# support rc and res-files
def object_filenames (self
,
if output_dir
is None: output_dir
= ''
for src_name
in source_filenames
:
# use normcase to make sure '.rc' is really '.rc' and not '.RC'
(base
, ext
) = os
.path
.splitext (os
.path
.normcase(src_name
))
if ext
not in (self
.src_extensions
+ ['.rc']):
raise UnknownFileError
, \
"unknown file type '%s' (from '%s')" % \
base
= os
.path
.basename (base
)
# these need to be compiled to object files
obj_names
.append (os
.path
.join (output_dir
,
base
+ self
.res_extension
))
obj_names
.append (os
.path
.join (output_dir
,
base
+ self
.obj_extension
))
# override the find_library_file method from UnixCCompiler
# to deal with file naming/searching differences
def find_library_file(self
, dirs
, lib
, debug
=0):
shortlib
= '%s.lib' % lib
longlib
= 'lib%s.lib' % lib
# this form very rare
# get EMX's default library directory search path
emx_dirs
= os
.environ
['LIBRARY_PATH'].split(';')
for dir in dirs
+ emx_dirs
:
shortlibp
= os
.path
.join(dir, shortlib
)
longlibp
= os
.path
.join(dir, longlib
)
if os
.path
.exists(shortlibp
):
elif os
.path
.exists(longlibp
):
# Oops, didn't find it in *any* of 'dirs'
# Because these compilers aren't configured in Python's pyconfig.h file by
# default, we should at least warn the user if he is using a unmodified
CONFIG_H_NOTOK
= "not ok"
CONFIG_H_UNCERTAIN
= "uncertain"
"""Check if the current Python installation (specifically, pyconfig.h)
appears amenable to building extensions with GCC. Returns a tuple
(status, details), where 'status' is one of the following constants:
all is well, go ahead and compile
not sure -- unable to read pyconfig.h
'details' is a human-readable string explaining the situation.
Note there are two ways to conclude "OK": either 'sys.version' contains
the string "GCC" (implying that this Python was built with GCC), or the
installed "pyconfig.h" contains the string "__GNUC__".
# XXX since this function also checks sys.version, it's not strictly a
# "pyconfig.h" check -- should probably be renamed...
from distutils
import sysconfig
# if sys.version contains GCC then python was compiled with
# GCC, and the pyconfig.h file should be OK
if string
.find(sys
.version
,"GCC") >= 0:
return (CONFIG_H_OK
, "sys.version mentions 'GCC'")
fn
= sysconfig
.get_config_h_filename()
# It would probably better to read single lines to search.
# But we do this only once, and it is fast enough
# if we can't read this file, we cannot say it is wrong
# the compiler will complain later about this file as missing
return (CONFIG_H_UNCERTAIN
,
"couldn't read '%s': %s" % (fn
, exc
.strerror
))
# "pyconfig.h" contains an "#ifdef __GNUC__" or something similar
if string
.find(s
,"__GNUC__") >= 0:
return (CONFIG_H_OK
, "'%s' mentions '__GNUC__'" % fn
)
return (CONFIG_H_NOTOK
, "'%s' does not mention '__GNUC__'" % fn
)
""" Try to find out the versions of gcc and ld.
If not possible it returns None for it.
from distutils
.version
import StrictVersion
from distutils
.spawn
import find_executable
gcc_exe
= find_executable('gcc')
out
= os
.popen(gcc_exe
+ ' -dumpversion','r')
result
= re
.search('(\d+\.\d+\.\d+)',out_string
)
gcc_version
= StrictVersion(result
.group(1))
# EMX ld has no way of reporting version number, and we use GCC
# anyway - so we can link OMF DLLs
return (gcc_version
, ld_version
)